Download Epson EPL-5500 User's Manual

EPSON TERMINAL PRINTER
EPL-5500
SERVICE MANUAL
EPSON
4005431
- ii -
NOTICE
All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO
EPSON’s express written permission is forbidden.
The contents of this manual are subjects to change without notice.
All efforts have been made to ensure the accuracy of the contents of this manual. However, should
any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this
manual or the consequence thereof.
Epson is a registered trademark of Seiko Epson Corporation.
General Notice: Other product names used herein are for identication purposes only and may
be trademarks of their respective campanies.
Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan
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PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal injury and 2)
damage to equipment.
DANGER
Signals a precaution which, if ignored, could result in serious or fatal personal injury.
Great caution should be exercised in performing procedures preceded by DANGER
Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/
maintenance procedures.
DANGER
1.
ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE.
2.
NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH
BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN
THEIR LINE OF WORK.
3.
WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT
THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER
SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON
POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
WARNING
1.
REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2.
MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE,
LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A
PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3.
ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE
POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS
AND/OR INDIVIDUAL CHIPS.
4.
IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC
DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING
INTERNAL COMPONENTS.
5.
REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE
MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED
COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
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SAFETY INFORMATION
This printer is a page printer which operates by means of a laser. There is no possibility of danger from
the laser, provided the printer is operated according to the instructions in this manual provided.
Since radiation emitted by the laser is completely confined within protective housings, the laser beam
cannot escape from the machine during any phase of user operation.
For United States Users;
[Laser Safety]
This printer is certified as a Class 1 Laser product under the U.S. Department of Health
and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not
produce hazardous laser radiation.
[CDRH Regulations]
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug
Administration implemented regulations for laser products on August 2, 1976. Compliance is mandatory for products marketed in the United States. The label shown below
indicates compliance with the CDRH regulations and must be attached to laser products
marketed in the United States.
WARNING : Use of controls, adjustments or performance of procedures other
than those specified in this manual may result in hazardous radiation exposure.
[Internal Laser Radiation]
Maximum Radiation Power:
Wave Length:
5.0 × 10-4 (W)
790 ± 20 nm
This is a Class IIIb Laser Diode Assay that has an invisible laser beam. The print head
unit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be opened
under any circumstances.
For Other Countries Users;
WARNING: Use of controls, adjustments or performance of procedures other
than those specified in this manual may result in hazardous radiation exposure.
This is a semiconductor laser. The maximum power of the laser diode is 5.0 ×
10-4 W and the wavelength is 790 ± 20 nm.
For Denmark Users;
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
Klasse 1 laser produkt der opfylder IEC825 sikkerheds kravene.
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For Finland, Sweden Users;
VAROITUS
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteiylle.
VARNING
Om apparaten används på annat sätt än i denna bruksanvisning specificerats,
kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för
laser klass 1.
For Finland, Sweden Service People
VAROITUS
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING
Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad.
Betrakta ej strålen.
For Norway Users;
ADVARSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan brukeren utsettes for unsynlig laserstråling som overskrider grensen
for laser klasse 1.
Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0 × 10-4 W og
bølgelengde er 790 ± 20 nm.
Laser Safety Labels
[Label on rear printer case]
A laser safety labels is attached on the outside of the printer shown below.
For United State
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For Europe
[Label inside printer]
The following laser safety label will be attached inside the printer as shown below.
For Denmark, Finland, Sweden, and Norway
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PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair
of EPL-5500.
The instructions and procedures included herein are intended for the experience repair technician, and
attention should be given to the precautions on the preceding page. The chapters are organized as
follows:
CHAPTER 1. GENERAL DESCRIPTION
Provides a general product overview, lists specifications, and illustrates the main components of the printer.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of printer operation.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Includes a step-by-step guide for product disassembly and assembly.
CHAPTER 4. ADJUSTMENTS
Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.
CHAPTER 6. MAINTENANCE
Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.
APPENDIX
Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
The contents of this manual are subject to change without notice.
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REVISION SHEET
Revision
Issue Date
Revision Page
Rev. A
October 06, 1995
1st issue
Revise the whole pages of the
following chapters:
Rev. B
March 15, 1996
- vii -
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 1
General Description
Table of Contents
1.1 FEATURES
1-1
1.2 SPECIFICATIONS
1-3
1.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.3 Reliability Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.4 Environmental Conditions for Operating (Include Imaging Cartridge) . . . . 1-5
1.2.5 Environmental Conditions for Storage and Transportation . . . . . . . . . . . . 1-5
1.2.6 Applicable Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.2.7 Specifications for Consumable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.2.8 Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.2.9 Software Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.3 INTERFACE SPECIFICATIONS
1-9
1.3.1 Parallel Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.3.1.1 Compatibility Mode of Parallel Interface . . . . . . . . . . . . . . . . . . . . 1-9
1.3.1.2 Reverse ModeMode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.3.2 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.3.3 Optional LocalTalk Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
1.4 OPERATING INSTRUCTIONS
1.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2 Printer Settings Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3.1 Heaxadecimal Dump Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3.2 EEPROM Initialize Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3.3 Factory Reset Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3.4 Default Setting Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4 Display of Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4.1 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4.3 Service Call Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.5 Printer Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.5.1 Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.5.2 Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.6 Emulation Mode Switch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.6.1 Emulation Switch by SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.6.2 Intelligent Emulation Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.7 Bi Resolution Improvement Technology . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.8 Toner Save Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.9 Optional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-18
1-18
1-20
1-23
1-23
1-23
1-23
1-24
1-27
1-27
1-27
1-27
1-28
1-28
1-28
1-29
1-29
1-29
1-30
1-31
1-31
1.5 MAIN COMPONENTS
1.5.1 C169 MAIN-B Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2 PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3 PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.4 Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.5 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.6 Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-32
1-33
1-34
1-34
1-35
1-35
1-36
1.5.7 Developing Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
1.5.8 Lower Paper Cassette Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
List of Figures
Figure 1-1. Exterior View of the EPL-5500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Figure 1-2. Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Figure 1-3. Compatibility Mode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Figure 1-4. Parallel Interface State Switch Diagram . . . . . . . . . . . . . . . . . . . . . 1-12
Figure 1-5. Negotiation Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-6. Timing Chart of Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-7. Termination Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Figure 1-8. Timing Chart of Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Figure 1-9. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Figure 1-10. Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
Figure 1-11. Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
Figure 1-12. Emulation Switch by SPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Figure 1-13. Intelligent Emulation Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Figure 1-14. Effect of RITech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
Figure 1-15. RITech Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
Figure 1-16. Toner Save Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
Figure 1-17. Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
Figure 1-18. C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Figure 1-19. PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Figure 1-20. PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Figure 1-21. Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
Figure 1-22. Fusing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
Figure 1-23. Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
Figure 1-24. Developing Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
List of Tables
Table 1-1. Options for the EPL-5500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Table 1-2. Paper Feed Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Table 1-3. Paper Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Table 1-4. Usability of Special Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Table 1-5. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4
Emulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Table 1-7. Built-in Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Table 1-8. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Table 1-9. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Table 1-10. Serial Interface Connector Pin Assignments . . . . . . . . . . . . . . . . . 1-15
Table 1-11. LocalTalk Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . 1-17
Table 1-12. Printer Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Table 1-13. Service MOde Select Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Table 1-14. Default Settings Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Table 1-15. Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Table 1-16. Differences in Components for the C169 MAIN-B Board . . . . . . . 1-33
Rev. A
1-iii
EPL-5500 Service Manual
General Description
1.1 FEATURES
The EPSON EPL-5500 is non-impact page printer that combines a semi-conductor laser with
electrophotographic technology. This printer is small and light, and features high-speed,
high-resolution printing. Maintenance is very easy as a result of various built-in diagnostic functions.
The main features are:
❏
No ozone
❏
Printing speed — 6 ppm (pages per minute)
❏
Resolution — 600/300 dpi (dots per inch)
❏
Light weight — about 5 kg (11 lb)
❏
Small footprint
❏
Low running cost: separation of the development/toner cartridge and photoconductor unit
❏
HP LaserJet 4 emulation mode
❏
22 built-in scalable fonts (8 Agfa and 14 TrueType fonts)
❏
High-performance controller (the controller’s CPU is a 22.5 MHz SPARKlite (MB86933H))
❏
Bi Resolution Improvement Technology (BiRITech) refines the print quality by eliminating
jagged edges from images and characters on 600 dpi and 300 dpi printing
❏
Memory Improvement Technology supported
❏
Optional EPSONScript Level 2 (PostScript compatible) module
❏
Optional WPS (Windows Printing System) ROM SIMM module
❏
Optional I239X, ESC/P 2 , and FX emulation ROM SIMM module
❏
EPSON Micro Gray Technology (EMGTech), which is available when using PCL and
EPSONScript Level 2 mode, refines gray scale printing to be comparable to printing on a
1200-dpi printer
❏
Small and low-cost optional LocalTalk with serial interface module
❏
1MB standard RAM and memory expansion available up to 32MB of RAM with the addition of
optional SIMMs
❏
Bidirectional parallel interface
❏
Toner-saver mode supported
❏
A multi-user, multi-emulation mode
❏
IES (Intelligent Emulation Switch) allows switching between EPSONScript mode and another
mode
❏
SPL (Shared Printer Language) enables switching of the printer mode by command
Figure 1-1 shows an exterior view of the EPL-5500.
Figure 1-1. Exterior View of the EPL-5500
Rev. B
1-1
General Description
EPL-5500 Service Manual
Table 1-1 lists the optional units available for the EPL-5500.
Table 1-1. Options for the EPL-5500
Cat. No.
Description
C83218✽ Windows Printing System ROM SIMM
—
—
C812491
Supports Windows Printing System
EPSONScript Level 2 ROM SIMM
Supports EPSONScript Level 2 mode
(PostScript Level 2 compatible) fonts and
commands (see Note 1)
LQ/FX/I239X ROM SIMM
Supports ESC/P 2, FX,
2390/2391 emulation modes
NLSP Bitmap 2 font ROM
Supports local NLSP bitmap fonts
(see Note 2)
NLSP Scalable font ROM
Supports local NLSP scalable fonts
(see Note 2)
C83219✽
C83220✽
Note
and
IBM
250-sheet lower paper cassette for theLower paper cassette
EPL-5500 (A4/B5)
S050005 Developer cartridge
Developer and toner cartridge
S051029 Photoconductor unit
—
C82334✽ LocalTalk with serial I/F module
(see Note 3)
C83614✽ Interface cable
RS-232C extension cable for C82334✽
C82335✽ Type-B EX box
Type-B I/F card box (see Note 4)
C82307✽/ 32 KB serial interface card
C82308✽
C82310✽/ 32 KB parallel interface card
C82311✽
(see Note 5)
C82312✽ LocalTalk card
(see Note 5)
C82313✽ GPIB card
(see Note 5)
C82314✽ COAX interface card
(see Note 5)
C82315✽ TWINAX interface card
(see Note 5)
C82324✽ Ethernet interface card for NetWare
(see Note 5)
C82328✽ FAX card
(see Note 5)
C82331✽ Multi protocol Ethernet card
(see Note 5)
(see Note 5)
Notes:
1.
Requires added memory (RAM) over a total of 2 MB, including standard RAM.
2.
NLSP font ROMs do not support ESC/P 2 and FX modes.
3.
LocalTalk with serial I/F module (C82334✽) cannot be used with Type-B EX box (C82335✽).
4.
Type-B EX box (C82335✽) cannot be used with LocalTalk with serial I/F module (C82334✽) .
5.
Type-B EX box (C82335✽) must be installed while using the Type-B I/F card.
1-2
Rev. B
EPL-5500 Service Manual
General Description
1.2 SPECIFICATIONS
This section provides statistical data for the EPL-5500.
1.2.1 Basic Specifications
Printing method:
Laser beam scanning and dry electrophotography
Resolution:
600/300 dpi
Printing speed:
6 ppm (letter/A4)
First printing time (A4/LT):
Less than 20 seconds (face-up output)
Warm-up time:
Less than 35 seconds
(at rated current and 23° C (73° F) temperature)
Paper supply:
See Table 1-2.
Table 1-2. Paper Feed Methods
Capacity Using
20 lb. (75 g/m2)
Paper
Paper Supply
Standard built-in paper tray
Paper Size
Usage Thickness
(Ream Weight)
150
A5, B5, A4, LT,16 to 24 lb.
GLT, EXE, LGL,(60 to 90 g/m2)
GLG, F4, HL
5 to 10
Monarch,
Envelopes made
DL, C5, C6,
of 20 to 24 lb.
International
B5, (75 to 90 g/m2)
Commercial-10
paper
Manual feed slot
1
Any size feedable
(Note 2)
16 to 42 lb.
(60 to 157 g/m2)
Lower paper cassette (optional)
250
A4, B5
16 to 24 lb.
(60 to 90 g/m2)
Notes:
1.
The weight in pounds (lb) is determined by the weight of 500 sheets cut to 17 × 22 inches;
1 g/m2 = 0.2659763 lb.
2.
Paper size range:
Paper types:
width
length
3 to 8.5 inches (76 to 216 mm)
5 to 14.0 inches (127 to 356 mm)
See Table 1-3.
Table 1-3. Paper Types
Rev. B
1-3
General Description
EPL-5500 Service Manual
Standard paper
Xerox 4024 DP paper
20 lb (75 g/m2)
Normal paper
Regular photocopier paper
Bond paper
Recycled paper
16 to 24 lb (60 to 90 g/m2)
Special papers
Card stock (90 to 157 g/m2)
Envelopes
Labels
Letterhead
Transparency (OHP) sheets
Colored paper
4.0 mm
Printable Area
4.0 mm
4.0 mm
4.0 mm
Figure 1-2. Printable Area
1-4
Rev. B
EPL-5500 Service Manual
General Description
Usability of special papers:
See Table 1-4.
Table 1-4. Usability of Special Papers
Input
OHP
Envelopes
Labels
Card Stock
Letterhead
Standard built-in
paper tray
P
P
P
P
R
Manual feed slot
P
P
P
P
R
Lower paper cassette
N
N
N
N
P
R: Reliable feeding and good image quality.
P: Possible, but better avoided.
N: Not supported.
Paper feed alignment and direction:
Center alignment for all sizes
Paper ejection:
Face down
Output tray capacity:
100 sheets (face down)
Printable area (standard paper):
See Figure 1-2.
Note:
The actual printable area depends on the printer mode.
Noise:
Less than 35 dB(A), standby
Less than 47 dB(A), operating
Ozone density:
Less than 0.01 ppm
Toxicity:
No toxicity exists in organic photoconductor (OPC), toner,
or plastic materials
Rev. B
1-5
General Description
EPL-5500 Service Manual
1.2.2 Electrical Specifications
Table 1-5. Electrical Requirements and Ranges
Description
Rated voltage
Input voltage range
100 V Version
200 V Version
100 ∼ 120 VAC
220 ∼ 240 VAC
90 ∼ 132 VAC
198 ∼ 264 VAC
Rated frequency range
50 ∼ 60 Hz
Input frequency range
47 ∼ 63 Hz
Power consumption
Less than 500 W
Power consumption while in
standby mode
Less than 600 W
Less than 15 W
(without option)
1.2.3 Reliability Specifications
MPBF (Mean Prints Between Failures): Over 25,000 sheets
Note:
MPBF indicates average number of pages printed before occurrence of problem requiring
replacement or service.
MTBF (Mean Time Between Failures):
Jam rate:
Feed failure:
Multiple paper feeds:
Paper curl height:
Leading edge bending (1 cm or more):
MTTR (Mean Time To Repair):
Durability:
3000 power on hours (POH)
1 out of 2,000 sheets or less (excluding multiple-sheet feeding)
1 out of 2,000 sheets or less (excluding multiple-sheet feeding)
1 out of 500 sheets or less
30 mm (1.2 inches) or less
1 out of 1,000 sheets
30 minutes or less
5 years or 180,000 sheets
1.2.4 Environmental Conditions for Operation (Including Imaging Cartridge)
Temperature:
10 to 35° C (50 to 95° F)
Humidity:
15 to 85% RH
Altitude:
2,500 m (8,200 feet) or lower
Levelness:
1°
Illuminance:
3,000 lux or less (Must not be exposed to direct sunlight.)
Surrounding space:
Printer should have at least 100 mm of clearance on its
sides and rear.
1.2.5 Environmental Conditions for Storage and Transportation
Temperature:
0 to 35° C (32 to 95° F)
Humidity:
30 to 85% RH
Drop test:
Clear to JIS Z0200-1987 Level 1
Vibration:
Vibration frequency
Acceleration
Acceleration direction
Resistance to atmospheric pressure:
More than 61.3 KPa
Storage life:
18 months (following date of manufacture)
1-6
5 to 100 Hz and 100 to 5 Hz
1G
3 direction
Rev. B
EPL-5500 Service Manual
General Description
1.2.6 Applicable Standards
Safety Standards
120 VAC model:
220/240 VAC model:
UL 1950, CSA 22.2 No. 950 Deviation 3
EN 60950 (IEC950), NEMKO (IEC950), SETI (IEC950),
SEMKO (IEC950), DEMKO (IEC950)
Safety Regulations (Laser Radiation)
120 VAC model:
220/240 VAC model:
FDA (NCDRH) Class 1
VDE 0837 (Laser Class 1) (IEC825), SETI (IEC825), SEMKO
(IEC825), DEMKO (IEC825)
EMI
120 VAC model:
220/240 VAC model:
FCC Part 15 Subpart B Class B, DOC Class B
Vfg 243 (VDE 0878 Part 3,30)
EN55022 Class B (CISPR Pub.22 Class B)
CE marking, EMC
Others
Toner:
OPC:
Ozone:
Materials:
No effect on human health (OSHA-TSCA, EINECS)
No effect on human health (OSHA)
Less than 0.01 mmp
other UL478 (5th edition)
SWISS environmental law (must contain no CdS)
1.2.7 Specifications for Consumables
Life:
Note:
Developer and toner cartridge: 3,000 pages
Photoconductor unit: 20,000 pages
In continuous printing mode with A4/letter paper at a 5% image ratio (black/white ratio).
The life varies, depending on the printing mode (continuous or intermittent) and/or the
image ratio.
Environmental Conditions for Storage and Transportation
Temperature:
0 to 35° C (32 to 95° F)
Humidity:
30 to 85% RH
Drop test:
Vibration:
Resistance to atmospheric pressure:
Storage term:
Height 76 cm (30.4 inches)
Same as printer
More than 74 Kpa
18 months (following date of manufacture)
1.2.8 Physical Specifications
Dimensions (Width × Depth × Height):
Printer:
Weight:
Rev. B
352 × 264 × 299 mm (13.9 × 10.4 × 11.8 inches)
Approx. 5 kg (11 lb), with consumables, excluding all options
1-7
EPL-5500 Service Manual
General Description
1.2.9 Software Specifications
HP LaserJet 4 emulation (PCL 5e)
EPSON GL/2 mode (GL-like mode)
EPSON GL/2 mode is similar to the GL/2 mode included in the HP LaserJet 4 emulation.
Table 1-6 shows the differences between EPSON GL/2 mode and the LJ4 GL/2 mode.
While in EPSON GL/2 mode, the operator can enter GL/2 mode without sending the
ESC %#B (Enter GL/2 mode) command. If the operator’s application software cannot
send the ESC %# B command, then use this mode.
Built-in modes:
Note:
Table 1-6. Differences between EPSON GL/2 and
GL/2 in the HP LaserJet 4 Emulation
EPSON GL/2 Mode
PCL mode
Paper eject
Auto eject
Reduced printing
Switch to PCL
(ESC %#A)
Reset (ESC E)
Not available
Supports PG, AF commands
SelecType setting
SelecType setting
Not supported
GL/2 for HP LaserJet 4
Emulation Mode
Initial mode
Supported in PCL
Not available
Available in PCL
Supported
Ejects paper and then initializes Ejects paper, switches to PCL,
and then initializes
Supported
Supported
Supported
Not supported
PJL, EJL, and ES
Advance full page
(PG, AF)
The EPL-5500 GL/2 mode features all the commands of the LJ4-GL/2 mode, plus a few
Note:
additional commands. The GL/2 mode emulates some of the HP-GL plotter (HP 7475A,
etc.) commands. If the application software uses unsupported commands for the GL/2
mode, print cannot be assured.
Optional modes:
EPSONScript Level 2 (PostScript Level 2 emulation) mode
FX (FX-870/1170, LX-100) emulation mode
ESC/P 2 (Stylus 800/1000) emulation mode
WPS (Windows Printing System) mode
Auxiliary software: Hex dump
Status sheet
Font sample
Built-in fonts:
See Table 1-7.
Table 1-7. Built-in Fonts
Resident Fonts
Bitmap fonts
Line Printer16.66 cpi(Portrait)
Scalable fonts
Dutch 801Roman SWC
Dutch 801Bold SWC
Dutch 801Italic SWC
Dutch 801Bold Italic SWC
Swiss 742SWC
Swiss 742Bold SWC
Swiss 742Medium Italic SWC
S: Supported, NS: Not Supported
Rev. B
Applicable Mode
HP LJ4, GL/2
S
S
S
S
S
S
S
S
1-7
General Description
EPL-5500 Service Manual
Table 1-7. Built-in Fonts (Continued)
Resident Fonts
Scalable fonts
Swiss 742Bold Italic SWC
Swiss 721Roman SWM
Swiss 721Bold SWM
Swiss 721Oblique SWM
Swiss 721Bold Oblique SWM
Dutch 801Roman SWM
Dutch 801Bold SWM
Dutch 801Italic SWM
Dutch 801Bold Italic SWM
Symbol SetSWA
More WingBatsSWM
CourierSWC
CourierBold SWC
CourierItalic SWC
CourierBold Italic SWC
S: Supported, NS: Not Supported
1-8
Applicable Mode
HP LJ4
GL/2
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
Rev. B
EPL-5500 Service Manual
General Description
1.3 INTERFACE SPECIFICATIONS
The EPL-5500 is equipped with the following external interfaces:
❏ Parallel interface
❏ Optional LocalTalk/serial interface
❏ Optional Type B interface with Type-B EX box
1.3.1 Parallel Interface
The parallel interface has the following two modes:
❏ Compatibility mode (same as parallel interface for EPSON’s current page printer)
❏ Reverse mode
1.3.1.1 Parallel Interface Compatibility Mode
System:
Handshaking:
Connector type:
Applicable plug:
Transfer speed:
Signal timing:
Signal description:
STROBE synchronization, 8-bit parallel data transfer
BUSY and ACKNLG signals
P90-25027-1 (Amphenol) receptacle
57-30360 (Amphenol or equivalent)
Approximately 400,000 bytes/second (max.)
See Figure 1-3.
See Table 1-8.
0.5 µ s
0.5 µ s
(minimum) (minimum)
DATA 1-8
VALID
VALID
0.5 µ s (minimum)
STR OBE
0.5 µ s (maximum)
BU SY
0s
0.5 or 5 µ s (min.)
(minimum)
AC KN LG
1 or 10 µ s
(typical)
Figure 1-3. Compatibility Mode Signal Timing
Rev. B
1-9
General Description
EPL-5500 Service Manual
Table 1-8. Parallel Interface Pin Assignments
Pin No.
Signal Name
STROBE
I/O
IN
1
DATA 1-8
2-9
IN
Description
STROBE is a strobe pulse used to read data from the host
computer. The pulse width must be more than 0.5 µsec.
Normally it is HIGH, and data is latched at the trailing edge of
this signal.
DATA 1 to 8 are parallel data bits. When the signal is HIGH, the
data bit is 1, and when it is LOW, the data bit is 0. The most
significant bit (MSB) is DATA 8. The signal state must be
maintained for 0.5 µsec. on either side of the STROBE signal
active edge.
ACKNLG
ACKNLG is an acknowledge pulse with an approximate width
OUT of 1 or 10 µsec. This signal goes LOW when the data reception is
completed, which indicates that the printer can accept new data.
Timing with the BUSY signal is specified through SelecType.
BUSY
OUT The BUSY signal informs the host computer of the printer state.
When the signal is HIGH, the printer cannot accept data.
PE
The PE signal indicates paper empty for the standard tray
OUT selected through SelecType or command, or for the optional
paper cassette. Paper empty is indicated by HIGH.
13
SLCT
OUT Used in reverse mode.
14
AUTO-FEED
IN
Not used.
15
NC
—
Not used.
16
GND
—
Logic ground level.
17
CHASSIS GND
—
Connected to the printer chassis. The printer chassis GND and
the signal GND are connected to each other.
18
NC
—
Not connected.
19-30 GND
—
Ground level for the twisted pair return signal.
INIT
IN
The STROBE signal is ignored when this signal is LOW.
10
11
12
31
ERROR
32
This level goes LOW when the printer is:
• Out of paper
OUT • Paper jam
• In the error state
• Off line
33
GND
—
Same as for pins 19 to 30.
34
NC
—
Not used.
35
+5
—
Pulled up to +5 V through 1.0K-ohm resistance.
36
SLCT IN
—
Used in reverse mode.
1-10
Rev. B
EPL-5500 Service Manual
General Description
1.3.1.2 Reverse Mode
Reverse mode for the EPL-5500 supports the IEEE-P1284 nibble mode. This printer can run in
reverse mode, in which the printer can inform the computer of its status with EJL and PJL
commands.
System:
IEEE-P1284 nibble mode
Connector type:
P90-25027-1 (Amphenol) receptacle
Applicable plug:
57-30360 (Amphenol or equivalent)
Signal description:
See Table 1-9.
Table 1-9. Parallel Interface Pin Assignment
Pin No.
1
Signal Name
STROBE
I/O
IN
DATA 1-8
2-9
IN
Description
HostClk: This signal is a strobe pulse used to read extension
request values from the host computer during negotiation.
These signals are data bits of extension request values received
during negotiation. This printer supports following values:
0000 0100: Request Device ID (sent in nibble mode)
0000 0000: Request nibble mode
10
ACKNLG
OUT PtrClk: Printer sends clock data.
11
BUSY
OUT PtrBusy: Printer sends data bits 3 and 7 during data transfer to
host computer.
PE
OUT AckDataReq: Printer sends data bits 2 and 6 during data
transfer to host computer.
SLCT
OUT Xflag: Printer sends data bits 2 and 6 during data transfer to
host computer.
12
13
AUTO-FEED
14
IN
HostBusy: This signal informs the printer of the host computer’s
state. When the signal is HIGH, the host computer cannot
accept data.
15
NC
—
Not used.
16
GND
—
Logic ground level.
17
CHASSIS GND
—
Connected to the printer chassis. The printer chassis GND and
the signal GND are connected to each other.
18
NC
—
Not connected.
—
Ground level for the twisted pair return signal.
IN
nInit: Fixed at HIGH level.
19-30 GND
31
INIT
32
ERROR
33
GND
—
Same as for pins 19 to 30.
34
NC
—
Not used.
35
+5
—
Pulled up to +5 V through 1.0K-ohm resistance.
36
SLCT IN
IN
1284Active: If this signal is set to HIGH, this printer is actively
in P1284 (reverse mode).
Rev. B
OUT nDataAvail: Printer sending data bits 0 and 4 during data
transfer to host computer.
1-11
General Description
EPL-5500 Service Manual
Compatibility M ode
Forward
D ata
Transfer
S TROB E
ACK and BUSY
Forward
Idle
SLCT IN=HIGH
ERR=HI GH
No data sent
Terminate
Failed
Negotiation
Negotiation
SLCT I N=LOW
E RR=L O W
Sending data
E RR = L O W
Sending data
Host Busy
Data Not
Available
ERR=HI GH
No data sent
Reverse
Dat a
Transfer
A UT O
FEED=LOW
Reverse
Idle
A UT O
FE ED=L OW
Request to
send data
Host Busy
Dat a
Available
A UT O
FEED=HIG H
ERR= LO W
Interrupt
Ho st
Figure 1-4. Parallel Interface State Switch Diagram
Figure 1-4 shows the switch diagram for the parallel interface state.
1-12
Rev. B
EPL-5500 Service Manual
General Description
Figure 1-5 shows the negotiation timing chart.
DATA
00h or 04h
SEL-IN
STROBE
AUTO-FEED
ACKNLG
BUSY
PE
Peripheral Busy Status
Current Peripheral Status
Note1
SLCT
ERROR
Note 2
Current Peripheral Status
Note1
Compatibility
Negotiation
HB DA or
HB DNA
(Note 3)
Idle or
Transfer
Figure 1-5. Negotiation Timing Chart
Notes:
1. This signal is set to HIGH when no data is being sent.
This signal is set to LOW during sending of data.
2. This signal is set to HIGH if the extension request value was 04h.
3. HB DA: Host Busy Data is Available
HB DNA: Host Busy Data is Not Available
Figure 1-6 shows the data transfer timing chart.
Notes:
DATA
SEL-IN
STROBE
AUTO-FEED
ACKNLG
BUSY
Peripheral Busy Status
Bit 3
Bit 7
PE
Bit 2
Bit 6
Note 1
SLCT
Bit 1
Bit 5
Note 2
ERROR
Bit 0
Bit 4
Note 1
HB DA
Peripheral Busy Status
Negotiation
Idle or
Transfer
HB DA or
HB DNA
(Note 3)
Figure 1-6. Timing Chart for Data Transfer
1.
2.
3.
This signal is set to HIGH when no data is being sent.
This signal is set to LOW during sending of data.
This signal is set to HIGH, if extension request value was 04h.
HB DA: Host Busy Data is Available
HB DNA: Host Busy Data is Not Available
Rev. B
1-13
General Description
EPL-5500 Service Manual
Figure 1-7 shows the timing chart for termination.
DATA
SEL-IN
STROBE
AUTO-FEED
Note 3
ACKNLG
BUSY
Peripheral Busy Status
PE
Note 1
SLCT
Note 2
ERROR
Note 1
HB DNA, Idle,
or HB DA
Peripheral Busy Status
Current Peripheral Status
Current Peripheral Status
Termination
Compatibility
Figure 1-7. Termination Timing Chart
Notes:
1.
The signal is HIGH when HB DNA.
The signal is LOW when HB DA.
2. The signal is set to HIGH, if the extension request value was 04h.
3. Idle = LOW.
Figure 1-8 shows the timing chart for interrupts.
DATA
SEL-IN
STROBE
AUTO-FEED
ACKNLG
BUSY
Peripheral Busy Status
PE
Note 1
SLCT
ERROR
Reverse Idle
Interrupt
HB DA
Transfer
Figure 1-8. Timing Chart for Interrupts
Note:
1-14
The signal is set to HIGH, if the extension request value was 04h.
Rev. B
EPL-5500 Service Manual
General Description
1.3.2 Serial Interface
This printer can use the optional LocalTalk/serial interface module.
Type:
RS-232C/current loop
Transfer system:
Full duplex
Synchronization:
Asynchronous start-stop system
Start-bit:
1 bit
Stop-bit:
1 or 2 bits
Data length:
7 bits or 8 bits
Parity:
Odd, even, or none
Protocol:
X-ON/X-OFF (can be combined with DTR control)
DTR control (can be combined with X-ON/X-OFF)
Transfer speed:
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bps
Error:
Overrun error:
Processed as missing data and replaced by “*”
Parity error:
Replaced by “*”
Framing error:
Replaced by “*”
Breaking character: Ignored
Signal description:
See Table 1-10.
Table 1-10. Serial Interface Pin Assignments
Pin No.
1
Signal Name
CHASSIS-GND
TXD
2
I/O
—
Description
Connected to the printer chassis. The printer chassis GND and
signal GND are connected to each other.
Serial ASCII data output by the printer. It maintains the
OUT “MARK” state (LOW level) between transmitted character
codes. Logic 0 is at HIGH level (SPACE) and logic 1 is at LOW
level (MARK).
3
RXD
IN
Serial ASCII data input to the printer. It maintains “MARK”
state (LOW level) between received character codes.
5
CTS
IN
Always ignored.
7
SIGNAL-GND
—
Ground.
TTY-TXD
Current loop signal: HIGH impedance (SPACE) between pins
17 and 24 or X-ON signal sent across pins 17 and 24 indicates
OUT that the printer is ready to accept data; LOW impedance
(MARK) or X-OFF signal being sent indicates that the printer is
busy.
DTR
Signal output by printer. When the DTR signal is HIGH, the
printer can receive the RXD signal. The SelecType settings do
not specify DTR control, the signal level is HIGH while printer
OUT power is on. When the SelecType setting is used for DTR
control, DTR goes LOW in case of any error conditions. The
data (RXD) from host computer must be stopped within 128
characters after DTR goes LOW.
17
20
23
TTY-RXD Return
—
Current loop signal: Current return for pin 17
24
TTY-TXD Return
—
Current loop signal: Input data current loop
25
TTY-RXD
IN
Current loop signal: Current return for pin 25
Note :
Rev. B
The DTR state can be selected through printer settings.
1-15
General Description
EPL-5500 Service Manual
Handshaking
When the vacant area for data in the input buffer drops to 256 bytes, the printer outputs an X-OFF
code or sets the DTR signal level to LOW, indicating that the printer cannot receive more data.
Once the vacant area for data in the buffer recovers to 512 bytes, the printer outputs an X-ON code
or sets the DTR flag to HIGH, indicating that the printer is again ready to receive data.
Protocol
There are two types of protocols, as listed below, and each of them can be designated by SelecType
independently.
❏ DTR/DSR protocol
SelecType is used to execute the DTR/DSR control protocol. The DTR signal is set to HIGH when
the printer is ready to receive data, and to LOW when conditions indicate an error or that the
receiving buffer is full.
When the error is cleared and the printer returns to on-line mode, the signal returns to HIGH. When
SelecType is used to set the DTR control OFF, DTR is always set to HIGH. The printer transmits
TXD only when DSR is at the HIGH level (DSR is always considered HIGH when the SelecType
setting for DSR is OFF). X-ON/X-OFF transmission is independent of the DSR state.
❏ X-ON/X-OFF (DC1/DC3) protocol
SelecType is used to execute the X-ON/X-OFF protocol. The X-OFF (DC3) code is output if status
indicates an error, and the printer warns the host to stop data transmission within 256 characters.
No further X-OFF codes are sent in response to additional data received from the host after the
X-OFF code has been sent once. The X-ON (DC1) code is output after all conditions given in the
error are cleared.
When the remaining capacity of the receive buffer reaches 512 characters, X-OFF (DC3) is output
once. It is sent only once, even if there are multiple errors. The printer goes on line automatically at
power on, and outputs an X-ON code. Transmission of X-ON/X-OFF codes can be defined by
SelecType.
1-16
Rev. B
EPL-5500 Service Manual
General Description
1.3.3 Optional LocalTalk Interface
This printer can use the optional LocalTalk/ serial interface module.
Type:
LocalTalk
Signal level:
Same as RS-422 signal level
Protocol:
X-ON/X-OFF (cannot be combined with DTR control)
DTR control (cannot be combined with X-ON/X-OFF)
Transfer speed:
230.4K bps
Signal description:
See Table 1-11.
Table 1-11. LocalTalk Interface Pin Assignments
Pin No.
1
Signal Name
DTR
2
CTS
TXD-
3
4
GND
I/O
Description
Signal
output
by
the
printer.
When the DTR signal is HIGH, the
OUT
printer can receive the RXD signal.
IN
Serial ASCII data output from the printer.
HIGH level; when SD+ voltage is higher than the SD- voltage.
OUT LOW level; when SD+ voltage is less than the SD- voltage.
Logic 0 is SPACE and logic 1 is MARK. The state must be
maintained between transmitted character codes.
—
Ground.
IN
Serial ASCII data input from computer.
HIGH level; when RD+ voltage is higher than RD- voltage.
LOW level; when RD+ voltage is less than RD- voltage.
Logic 0 is “SPACE” and logic 1 is “MARK” state must be
maintained between transmitted character codes.
RXD5
The printer transmits the data through TXD while CTS is HIGH.
6
TXD+
7
NC
—
No connect.
8
RXD+
IN
Refer to RXD-.
Rev. B
OUT Refer to TXD-.
1-17
General Description
EPL-5500 Service Manual
1.4 OPERATING INSTRUCTIONS
This section describes functions performed through the control panel, such as printing a status
sheet, hexadecimal dump, and printer settings functions.
1.4.1 Control Panel
The printer control panel gives you easy control over most common printer operations. The panel
consists of indicator lights and a button.
LED (Yellow)
LED (Red)
Button
Figure 1-9. Control Panel
Indicator lights
❏ Yellow light
ON:
Communication with the host is possible.
Fast flashing: Receiving data or warming up.
Slow flashing: Received data is stored in the printer but has not been printed.
OFF:
Printer is power off.
❏ Red light
ON:
Paper jam or cover open.
Fast flashing: Feed jam, paper empty.
Slow flashing: One of these errors: SOFT ERROR, PRINT OVERRUN, MEMORY OVERFLOW,
CHECK PAPER SIZE, IMAGE OPTIMUM
OFF:
No error condition.
1-18
Rev. B
EPL-5500 Service Manual
General Description
Functions of Pressing the Button
❏ While the Red light flashes slowly:
Function of button
Operation
Clears an error.
Hold down the button until the yellow and Red lights both go on
after release. The printer prints a status sheet indicating the error
type.
❏ While the Red light flashes fast:
Function of button
Prints any of the following page.
- Feed jam or paper empty page
- Manual feed page
Operation
Load the paper or clear the jam, and then hold down the button
until the yellow and Red lights go on, then release to continue
printing.
❏ While yellow light is flashing slowly (except in EPSONScript mode):
Function of button
Prints out data in the printer’s memory.
Operation
Hold down the button until the yellow and red lights go on, then
release the button to continue printing.
❏ While the yellow light is on (except in WPS mode):
Function of button
Prints a status sheet.
Operation
Hold down the button until the yellow and red lights go on, then
release the button to continue printing. The yellow light flash while
the status sheet is being printed.
❏ Reset (always effective except during warm up or status sheet printing):
Function of button
Clears current port.
Operation
Hold down the button until the yellow and red lights go on, and
when these lights start flashing alternately, release the button.
❏ Warm boot (always effective except during warm up or status sheet printing):
Function of button
Warm boot (same as power on reset, except for engine initialization).
Operation
Hold down the button until the yellow and red lights start flashing
at the same time, then release the button.
Rev. B
1-19
General Description
EPL-5500 Service Manual
1.4.2 Printer Settings Functions
The printer settings function from the Remote Control Panel (software) lets the user control most of
the printer’s functions, such as printing test pages, selecting a paper size, and changing the printer’s
configuration. Table 1-12 shows the printer settings options.
Table 1-12. Printer Settings
Menu
PRINTING
LJ4
PS*
ESCP2*
Item
Available Options
COPIES
1 to 999
PAGE SIZE
A4, A5, B5, LT, HLT, LGL, GLT, GLG, EXE,
F4, MON, C10, DL, C5, IB5, CTM
ORIENTATION
PORT, LAND
MANUAL FEED
OFF, ON
RITech
OFF, LIGHT, MEDIUM, DARK
TONER SAVE
OFF, ON
FONT SRC
RESIDENT, SIMM, DOWNLOAD
FONT NUMBER
0 to (available)
PITCH
0.44 to 99.99 CPI (0.01 steps)
HEIGHT
4.00 to 999.75 PT. (0.25 steps)
SYMSET
Roman-8, ECM94-1, 8859-2 ISO, 8859-2 ISO,
IBM-US, IBM-DN, PcMultiling, PcE.Europe,
PcTk437, WiAnsi, WiE.Europe, WiTurkish,
DeskTop, PsText, VeInternati, VeUS,
MsPublishin, Math-8, PsMath, VeMath,
PiFont, Legal, UK, ANSI ASCII, Swedis2,
Italian,
Spanish,
German,
Norweg1,
French2, Windows
FORM
5 to 128 lines
SRC SYMSET*
0 to 3199
DEST SYMSET*
0 to 3199
ERR SHEET
OFF, ON
MicroGray
OFF, ON
PROTECT LEVEL
1 to 5
Font
Courier, Roman, Sans serif, Roman-T,
Sans-H, Script
Pitch
10 CPI, 12 CPI, 15 CPI, Prop
Condensed
OFF, ON
T-Margin
0.40 to 1.50 Inch (0.05 steps)
Text
1 to (available) lines
CG Table
Pc USA, Italic, PcMultilin, PcPortuguese,
PcCanFrenc,
PcNordic,
PcTurk2,
Pc.E.Europe, BpBRASCII, BpAbicomp
Country
USA, France, Germany, UK, Denmak,
Sweden, Italy, Spain1, Japan, Norway,
Denmark2, Spain2, LatinAmeric, Korea,
Legal
* With option
Table 1-12. Printer Settings (Continued)
Menu
1-20
Item
Available Options
Rev. B
EPL-5500 Service Manual
ESCP2 * (Continued)
FX*
I239X*
General Description
Auto CR
ON, OFF
Auto LF
OFF, ON
Bit Image
Dark, Light, BarCode
Zero Char
0, φ
Font
Courier, Prestige, Roman, Sans serif, Script
Pitch
10 CPI, 12 CPI, 15 CPI, Prop
Condensed
OFF, ON
T-Margin
0.40 to 1.50 Inch (0.05 steps)
Text
1 to (available) lines
CG Table
Pc USA, Italic, PcMultilin, PcPortuguese,
PcCanFrenc,
PcNordic,
PcTurk2,
Pc.E.Europe, BpBRASCII, BpAbicomp
Country
USA, France, Germany, UK, Denmak,
Sweden, Italy, Spain1, Japan, Norway,
Denmark2, Spain2, LatinAmerica
Auto CR
ON, OFF
Auto LF
OFF, ON
Bit Image
Dark, Light, BarCode
Zero Char
0, φ
Font
Courier, Prestige, Gothic, Orator Script,
Presentor
Pitch
10 CPI, 12 CPI, 15 CPI, 17 CPI, 20 CPI, 24
CPI, Prop
Code Page
437, 850, 860, 863, 865
T-Margin
0.40 to 1.50 Inch (0.05 steps)
Text
1 to (available) lines
Auto CR
OFF, ON
Auto LF
OFF, ON
Alt.Graphics
OFF, ON
Bit Image
Dark, Light, BarCode
Zero Char
0, φ
* With option
Rev. B
1-21
General Description
EPL-5500 Service Manual
Table 1-12. Printer Settings (Continued)
Menu
JOB
EMULATION
CONFIG
PARALLEL
SERIAL
TEST
Item
Available Options
PAGE PROTECT
AUTO, ON
RESOLUTION
600, 300
IMAGE OPTIMUM
AUTO, OFF, ON
TIMEOUT
5 to 300
PARALLEL
LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*
SERIAL*
LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*
L/T*
LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*
AUX*
LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*
AUTO CONT
OFF, ON
STANDBY
ENABLE, DISABLE
DENSITY
3, 4, 5, 1, 2
INTERFACE
AUTO, PARALLEL, SERIAL*, L/T*, AUX*
TOP OFFSET
0 to 99
LEFT OFFSET
0 to 99
PAGE COUNT
0 to 262143
SPEED
FAST, LOW
BI-D
ON, OFF
WORD LENGTH
8, 7
BAUD RATE
9600, 19200, 38400, 57600, 300, 600, 1200,
2400, 4800
PARITY
NONE, EVEN, ODD
STOP BIT
1, 2
DTR
ON, OFF
XON/XOFF
ON, OFF
STATUS SHEET
—
PS STATUS SHEET*
—
PS FONT SAMPLE*
—
PS FACT SHEET*
—
EXT PRINTER INFO
—
* With option
1-22
Rev. B
EPL-5500 Service Manual
General Description
1.4.3 Service Mode
This printer has the following four service modes:
❏ Hexadecimal dump mode
❏ EEPROM format mode
❏ Factory reset mode
❏ Default setting mode
Each service mode can be activatted selectively, by turning the printer on while hold down the
button and release it at the corresponding timing shown in table below.
Table 1-13. Service Mode Select Timing
Order
Pattern
LED
(Yellow)
LED
(Red)
Mode
1
Pattern 0-0
ON
ON
NA
2
Pattern 0-1
OFF
OFF
NA
3
Pattern 1
ON
OFF
Hexadecimal dump mode
4
Pattern 2
OFF
ON
EEPROM Initialize mode
5
Pattern 3
ON
OFF
Factory reset mode
6
Pattern 4
OFF
OFF
Default setting mode *1
*1: Can be performed by the user.
1.4.3.1 Hexadecimal Dump Mode
Hexadecimal dump mode is a useful tool in troubleshooting data control problems. To enter
hexadecimal dump mode, release the button at the mode select timing "Pattern-1". To quit the
hexadecimal dump mode, turn off the printer or perform the warm-boot operation.
1.4.3.2 EEPROM Initialize Mode
EEPROM initialize operations are required only when the main board or EEPROM is replaced and
these operations are specified in the accompanying documentation.
This mode resets all user settings to the factory default settings and clears the printer status
information (page counter and jam counter). To perform EEPROM initialize mode, release the
button at the mode select timing "Pattern-2" and press the bottun again within 2 seconds from the
release. The LED lights flashes alternately during the initialization. If the button is not pressed
within 2 seconds after release, the printer enters nomal state without initialize operation.
1.4.3.3 Factory Reset Mode
The factory reset mode resets the printer settings to the factory default settings (the page counter
and jam counter are not cleared). To enter factory reset mode, release the button at the mode select
timing "Pattern-3" and press the button again within 2 seconds after release. The LED lights flashes
alternately during the reset operation. If the button is not pressed within 2 seconds after release, the
printer enters the nomal state without reset operation.
Rev. B
1-23
General Description
EPL-5500 Service Manual
1.4.3.4 Default Settings
The default settings function is used to enter printer settings. The procedure for entering default
settings is:
1. To enter the default settings mode, turn on the printer while holding down the button until
yellow and red lights turn off and on and off.
2. Press the button the number of times for the 1st code, while the yellow light is flashing.
3. Press the button the number of times for the 2nd code, while the red light is flashing.
4. Press the button the number of times for the 3rd code, while all lights flash.
5. If you need end the default settings mode, return step 2 and input the "111" code.
If you need set the other settings, return to step 2.
Thable 1-14 shows default settings codes.
Table 1-14. Default Settings Codes
Menu
Item
Available Options
End of default settings mode
PARALLEL
SPEED
Bi-D
SERIAL*
WORD LENGTH
BAUD RATE
PARITY
STOP BIT
DTR
XON/XOFF
Default Settings
Codes
1st
2nd
3rd
Code Code Code
1
1
1
FAST
1
1
2
SLOW
1
1
3
ON
1
1
4
OFF
1
1
5
8
1
2
1
7
1
2
2
9600
1
2
3
19200
1
2
4
38400
1
2
5
27600
1
3
1
300
1
3
2
600
1
3
3
1200
1
3
4
2400
1
3
5
4800
1
4
1
NONE
1
4
2
EVEN
1
4
3
ODD
1
4
4
1
1
4
5
2
1
5
1
ON
1
5
2
OFF
1
5
3
ON
1
5
4
OFF
1
5
5
* With option
Table 1-14. Default Settings Code (Continued)
Menu
1-24
Item
Available Options
Default Settings
Codes
1st
2nd
3rd
Code Code Code
Rev. B
EPL-5500 Service Manual
EMULATION
PARALLEL
SERIAL*
General Description
LJ4
2
1
1
ESCP2*
2
1
2
FX*
2
1
3
I239X*
2
1
4
PS*
2
1
5
GL2
2
2
1
AUTO*
2
2
2
LJ4
2
3
2
ESC/P2*
2
3
3
FX*
2
3
4
I239X*
2
3
5
PS*
2
4
1
GL/2
2
4
2
AUTO*
2
4
3
LT*
AUX*
SERIAL*
LT*
AUX*
SERIAL*
LT*
AUX*
SERIAL*
LT*
AUX*
SERIAL*
LT*
AUX*
SERIAL*
LT*
AUX*
SERIAL*
LT*
AUX*
* With option
Rev. B
1-25
General Description
EPL-5500 Service Manual
Table 1-14. Default Settings Code (Continued)
Menu
ESC/P2* / FX*
STATUS SHEET
PRINTING
Item
CG Table
LANGUAGE
PAGE SIZE
ORIENTATION
MANUAL FEED
TONER SAVER
JOB
CONFIG
RESOLUTION
AUTO CONT
STANDBY
INTERFACE
Available Options
PcUSA
Deafult Settings
Codes
1st
2nd
3rd
Code Code Code
2
5
3
Italic
2
5
4
PcMultilin
2
5
5
PcPortugue
3
1
1
PcCanFrenc
3
1
2
PcNordic
3
1
3
PcTurkish
3
1
4
PcE.Europe
3
1
5
BpBRASCII
3
2
1
BpAbicomp
3
2
2
ENGLISH
3
2
3
FRENCH
3
2
4
GERMAN
3
2
5
ITALIAN
3
3
1
SPANISH
3
3
2
A4
3
5
1
LT
3
5
2
LGL
3
5
3
CTM
3
5
4
PORT
3
5
5
LAND
4
1
1
OFF
4
1
2
ON
4
1
3
OFF
4
1
4
ON
4
1
5
600
4
2
1
300
4
2
2
OFF
4
2
3
ON
4
2
4
ENABLE
4
2
5
DISABLE
4
3
1
AUTO
4
3
2
PARALLEL
4
3
3
SERIAL
4
3
4
LT
4
3
5
AUX
4
4
1
* With option
1-26
Rev. B
EPL-5500 Service Manual
General Description
1.4.4 Display of Messages
This printer indicates three types of messages with the LED lights or status sheet: status messages,
error messages, and the service call error message.
1.4.4.1 Status Messages
The LED lights normally indicate the printer’s status. (Refer to Section 1.4.1.)
1.4.4.2 Error Messages
If any of the following errors occurs, it will be printed on the status sheet (Refer to Section 1.4.2.).
Clear the error immediately using the measures shown in the following table.
Table 1-15. Error Messages
Message
SOFT ERROR
PAPER JAM
PRINTER OPEN
MANUAL FEED
PAPER SET
PRINT OVERRUN
MEM OVERFLOW
CHECK PAPER SIZE
IMAGE OPTIMUM
Status
Measures
Printer detected a CPU error or soft—
error. (Refer to Chapter 5.)
A paper jam has occurred.
Open the cover and remove the
jammed paper. Then close the cover.
Cover is open.
Close the cover.
Select manual feed and beginInsert paper and press button.
printing data.
No paper is left in either the Load paper in paper tray or optional
standard tray or the optionalcassette and press button.
cassette.
Engine speed faster than print imagePress the button.
processing.
Data has filled the buffer.
Confirm and press the button. And
add optional SIMM.
The paper size in the tray is differentChange the paper and print again.
from the paper size chosen.
The printer uses a lower printErase downloaded data or add a
quality.
SIMM.
1.4.4.3 Service Call Error Message
The LED lights flash randomly, when the printer detects a service call error. (Refer to Chapter 5.).
Rev. B
1-27
General Description
EPL-5500 Service Manual
1.4.5 Printer Sharing
This section describes printer sharing. This printer has two methods of printer sharing, port fixed
mode and auto sense mode. These modes are selected by “INTERFACE” in the printer settings
menu.
1.4.5.1 Port Fixed Mode
When the printer is in port fixed mode, only one interface port is active. Data from other ports is
ignored.
1.4.5.2 Auto Sense Mode
M ode Ass ignment
HP m ode
ESC/ P2 m ode
User 1
F X m ode
Par allel
GL2 m ode
EPSONScr ipt
m od e
Switched by
printer settings
Input buffer
M ode Ass ignment
Memory
HP m o d e
ESC/ P2 m ode
User 2
L/T or
Serial or
AUX
F X m ode
GL2 m ode
EPSONScr ipt
m od e
Figure 1-10. Port Fixed Mode
It is possible to allocate each mode to parallel, serial, L/T, and AUX. The entire memory will be
allocated to the channels that are used. The interface that receives the data first will print first.
M ode Ass ignment
HP m ode
ESC/ P2 m ode
User 1
F X m ode
Par allel
GL2 m ode
EPSONScr ipt
m od e
M ode Ass ignment
Input buffer
Auto Sense
Memory
HP m od e
ESC/ P2 m ode
User 2
Serial or
L/T or
AUX
F X m ode
GL2 m ode
EPSONScr ipt
m od e
Input buffer
Figure 1-11. Auto Sense Mode
1-28
Rev. B
EPL-5500 Service Manual
General Description
1.4.6 Emulation Mode Switch Function
This section describes the emulation mode switch function.
1.4.6.1 Emulation Switch by SPL
The two types of emulation switch function described below are available on this printer. Together
they are referred to as SPL (Shared Printer Language).
EJL: EPSON Job Language
This is EPSON’s original language system. It is used to skip among various destinations, as shown
in Figure 1-12.
PJL: Printer Job Language
This is HP’s original language, which is available with LaserJet 4 printer. It is used to skip among
various destinations, as shown in Figure 1-12. The precise specifications for this language are based
on HP LaserJet 4.
The figure below shows three types of mode switching.
Neither EJL nor PJL switches the mode directly. They first exit the current mode and return to EJL
or PJL. Then they enter another mode.
1.4.6.2 Intelligent Emulation Switch
LJ 4
EJL
FX
PJL
ESC/P 2
EPSONScript
EPSON GL/2
Figure 1-12. Emulation Switch by SPL
Intelligent Emulation Switch (IES) automatically switches emulation mode, depending on the data
sent from the host computer through one of the interface channels. It is able to switch between
EPSONScript and other modes as shown in the figure below.
1.4.7 Bi Resolution Improvement Technology
LJ4
ESC/P 2
EPSONScript
FX
EPSON GL/2
Figure 1-13. Intelligent Emulation Switch
The EPL-5500 printer has BiRITech (Bi Resolution Improvement Technology), which is designed to
improve print quality at 600 dpi and 300 dpi. By this method, the dot map data extracted from the
image data is reassembled to improve print data.
Rev. B
1-29
General Description
EPL-5500 Service Manual
The main improvement of this technique is in eliminating “jaggies” in diagonal lines. It is most
effective when the dot map data fits the development characteristics of the printer mechanism well.
It is therefore necessary to set appropriate values in printer settings.
Note:
BiRITech is not as effective for printing a mesh pattern or gray scale. In such cases,
BiRITech must be set to OFF. (The default setting is MEDIUM.) Since the BiRITech effect
depends on the toner condition, adjusted it when the imaging cartridge is replaced or after
the imaging cartridge is used for a long time.
1 inch
1
2
3
4
600
1
2
3
4
5
1 inch
6
7
R
8
600
(When 600 DPI printing)
Figure 1-14. Effect of BiRITech
The following settings are available in printer settings for RITech: DARK, MEDIUM, LIGHT, OFF.
The status sheet has the following RITech test image. When the toner density of area A is almost the
same as that of area B (as shown in the figure below), the RITech setting is at its optimum setting. In
other words, the optimum setting is achieved when it is difficult to distinguish the shape of area A
from that of B.
A
B
Figure 1-15. RITech Adjustment
1-30
Rev. B
EPL-5500 Service Manual
General Description
1.4.8 Toner Save Mode
The Toner Save Mode uses about 50% less toner than normal. The printer saves toner by substiuting
a gray shade for the black inside of characters. the outlines of the characters are still printed in full
back.
1.4.9 Optional Memory
U pper E dge
Left Edge
Figure 1-16. Toner save Mode
If you have difficulty printing complex, graphics-intensive pages or if you regularly use
downloaded fonts, you may need to install one of the optional SIMM sets on this printer’s controller
board. The printer’s controller board comes with 1MB of RAM installed.
By installing additional SIMMs, you can increase the printer’s memory to a total of 32MB, including
the resident memory.
EPSON supplies several types of memory option (SIMMs). Other SIMMs can be purchased from
other vendors. Be sure the SIMM meets the requirements listed below.
❏ 72-pin type
❏ Capacity is one of the following: 1, 2, 4, 8, 16, 32MB
❏ Access speed is less than 70 ns.
❏ Within the following dimensional size
36 mm (height) × 108 mm (width) × 10 mm (depth)
Rev. B
1-31
General Description
EPL-5500 Service Manual
1.5 MAIN COMPONENTS
To simplify maintenance and repair, the main components of the EPL-5500 have been designed for
easy removal and replacement. The main components are:
❏ C169 MAIN-B Board
Main board
❏ PWB-E Board
Power supply circuit board
❏ PWB-F Board
High-voltage supply circuit board
❏ Optical Unit
Printhead unit
❏ Fusing Unit
❏ Photoconductor unit
❏ Developer cartridge
❏ Housing
C 1 69 M AIN - B Boa r d
Fusing Unit
PWB-E Bo ard
Optical Unit
PWB-F Board
Figure 1-17. Component Layout
1-32
Rev. B
EPL-5500 Service Manual
General Description
1.5.1 C169 MAIN-B Board
The C169 MAIN-B board is a video controller and engine controller board. The primary functions of
this board are receiving print data from the host, generating the print image (video), and sending
the print image to the engine controller via the video interface. A 32-bit 22 MHz RISC MB86933H
SPARKlite CPU in location IC1 is used, and the following memory chips and custom ICs are
assigned to the 4GB memory space.
❏ Memory chips
Code and font ROMs: four 4M-bit EPROMs (IC13, 14, 15, 16) or two 8M-bit mask ROMs (IC21, 22)
Optional NLSP font ROM: 4M-bit or 8M-bit ROM (IC12). Not available in U.S. version.
4M-bit DRAMs (IC17, 18)
EEPROM (IC11)
❏ Custom ICs
ASIC E05A91 (IC2)
ASIC E05A92 (IC3)
ASIC E05A93 (IC4)
❏ Others
Reset IC M51953BFP (IC6)
The engine controller consists of an M3807x 8-bit CPU, including a MASK ROM. It controls laser
scanning (the polygon mirror drive motor), image synchronization, laser beam pulse width, and
power.
There are two types of C169 MAIN-B boards used as after service parts. The following table shows
differences between them.
Table 1-16. Differences in Components for the C169 MAIN-B Board
US version
IC12
Jumper J20
None
Open
Other Version
IC socket
Short
E05 A93
(IC4)
(IC 12)
M B8 6 9 3 3 H
(IC1 )
(IC 16)
(IC 14)
(IC 15)
E05 A91
(IC2)
E05 A92
(IC3)
(IC 13)
M 3807
(IC201)
Figure 1-18. C169 MAIN-B Board
Rev. B
1-33
General Description
EPL-5500 Service Manual
1.5.2 PWB-E Board
The PWB-E is the power supply board, which consists of a switching regulator circuit. It converts
the AC line voltage into +24 V and +5 VDC voltages. There are two types of power supply board,
the 100/120 V type and 220/240 V type. The difference between the two circuits is only in the input
section.
CAUTION
Do not touch VR1 on PWB-E board. This volume is for factory setting only.
VR1
F1
Figure 1-19. PWB-E Board
1.5.3 PWB-F Board
The PWB-F is the high-voltage supply circuit board. It converts the development bias, OPC drum
charge bias, and image transfer bias.
CAUTION
Do not touch VR3 on the PWB-F board. These volumes are for factory setting only.
VR3
Figure 1-20. PWB-F Board
1-34
Rev. B
EPL-5500 Service Manual
General Description
1.5.4 Optical Unit
The optical unit consists of the laser diode (semi-conductor laser), the mirror motor (scanner motor)
which drives the polygon mirror for laser scanning, and several mirrors and lenses. The laser beam
generated by the laser diode is conducted to the OPC drum surface by way of the polygon mirror,
as well as several mirrors and lenses, to create a latent electro-photographic image on the drum.
Figure 1-21. Optical Unit
1.5.5 Fusing Unit
The fusing unit fixes the toner to the paper using heat and pressure. This unit has a heater lamp,
thermistor, and thermal fuse. There are two types of fusing units, the 120 V type and the 220/240 V
type. The only difference between them is the heater lamp.
Figure 1-22. Fusing Unit
Rev. B
1-35
General Description
EPL-5500 Service Manual
1.5.6 Photoconductor Unit
Core mechanisms of the printing process, such as charging and imaging, are integrated into this
unit.
Figure 1-23. Photoconductor Unit
1.5.7 Developing Cartridge
Core mechanisms of the printing process, such as developing, are integrated into this cartridge.
1.5.8 Lower Paper Casste Unit
This optional paper cassete allows you to feed up an addtional 250 sheets of A4 or B5 paper into
this printer.
Figure 1-24. Developing Cartridge
Note:
1-36
While you use A4/B5 paper, jumper JP1 on the circuit board of lower paper casstte unit
should be set to 2-3. While you use letter/ executive paper, jumper JP1 should be set to
1-2. Jumper JP2 is fixed to 1-2.
Rev. B
Chapter 2
Operating Principles
Table of Contents
2.1 ENGINE OPERATION
2-1
2.1.1 Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.1.1 Paper Feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.1.1.2 Drum Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.1.1.3 Laser Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.1.1.4 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.1.1.5 Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.1.1.6 Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.1.2 Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.1.2.1 Main Motor Functions and Control . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor. . . . . . . . . . . . . . . 2-9
2.1.2.3 Fuser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.1.2.4 Scanner Mirror Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.1.2.5 Laser Diode Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.1.2.6 Bias Voltages and Laser Drive Timing . . . . . . . . . . . . . . . . . . . . 2-13
2.1.2.7 Fan Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2.1.2.8 Power Supply Circuit Function and Safety Protection . . . . . . . . . 2-15
2.2 VIDEO CONTROLLER OPERATION
2-16
2.2.1 C169 MAIN-B Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.2.1.1 Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.2.1.2 Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.2.1.3 Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.2.1.4 DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.2.1.5 Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.2.1.6 Video Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
List of Figures
Figure 2-1. Main Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Figure 2-2. Print Process Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Figure 2-3. Paper Feeding from the Paper Feed Tray . . . . . . . . . . . . . . . . . . . . 2-3
Figure 2-4. Paper Feeding from the Lower Paper Cassette . . . . . . . . . . . . . . . . 2-4
Figure 2-5. Drum Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Figure 2-6. Laser Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Figure 2-7. Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Figure 2-8. Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Figure 2-9. Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Figure 2-10. Engine Controller Connecting Diagram . . . . . . . . . . . . . . . . . . . . . 2-7
Figure 2-11. Gear and Roller Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Figure 2-12. Main Motor Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Figure 2-13. Paper Take-Up Sensor and Paper Exit Sensor On/Off Timing . . . 2-9
Figure 2-14. Fuser Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Figure 2-15. Temperature for Fuser Control Procedure . . . . . . . . . . . . . . . . . . 2-10
Figure 2-16. Scanner Motor Control Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Figure 2-17. Laser Diode Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-18. LDATA Generation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-19. Laser Emission Power Adjustment Timing . . . . . . . . . . . . . . . . . . 2-12
Figure 2-20.
Figure 2-21.
Figure 2-22.
Figure 2-23.
Figure 2-24.
Figure 2-25.
Figure 2-26.
Figure 2-27.
Figure 2-28.
Figure 2-29.
Figure 2-30.
Figure 2-31.
High-Voltage Supply Block Diagram . . . . . . . . . . . . . . . . . . . . . .
Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Sequence (Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print Sequence (End). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . .
Video Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C169 MAIN-B Board Block Diagram . . . . . . . . . . . . . . . . . . . . . .
Data Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-13
2-14
2-14
2-14
2-15
2-16
2-16
2-18
2-19
2-19
2-20
2-21
List of Tables
Table 2-1. Functions of C169 MAIN-B Board Main Elements . . . . . . . . . . . . . 2-17
EPL-5500 Service Manual
Operating Principles
2.1 ENGINE OPERATION
This section describes the functions and operating principles of the EPL-5500 engine. Figure 2-1
shows the locations and names of the main engine components.
4
7
5
6
3
8
2
1
9
19
10
11
18
17
12
Optional Second Paper
Feeding Unit
16
15
14
13
Figure 2-1. Main Components
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Fan Motor (M3)
Lower Fusing Roller
Paper Exit Sensor (PC3)
Upper Fusing Roller
Heater Lamp (H1)
Paper Exit Roller
Print Tray
Optical Unit
Toner Cartridge
Manual Feed Guide
Rev. B
11. Paper Feeding Tray
12. Paper Lift-up Plate
13. Paper Empty Sensor (PI1)
14. Paper Take-up Roller
15. Paper Transport Roller
16. Paper Take-up Sensor (PC1)
17. Pre-image Transfer Roller
18. Electrode Comb
19. Drum Cartridge
2-1
Operating Principles
EPL-5500 Service Manual
2.1.1 Print Process
This section describes the print process from paper feeding to paper exit. Figure 2-2 shows a
diagram of the print process.
Optical Unit
Print Exit
Fusing
Exposure
Drum Cartridge
Drum
Charge
Image
Transfer
Toner
Hopper
Development
Toner Cartridge
Paper Feeding
Tray
Second Paper
Feeding Unit
(optional)
Manual Feed
(1 sheet)
Multi Feeding
(150 sheets)
Multi Feeding
(250 sheets)
Figure 2-2. Print Process Diagram
2-2
Rev. B
EPL-5500 Service Manual
Operating Principles
2.1.1.1 Paper Feeding
Paper can be fed into the printer from the paper feed tray (150 sheets) or from the manual feed slot
(1 sheet at a time). Installing an optional second paper feed unit (lower cassette, 250 sheets) adds
another feeding method. Paper fed by the paper take-up roller is transported to the transport roller,
pre-image transfer roller, and then exit roller. After this, the paper is fed out onto the print tray. The
starting position of an image is decided by the paper take-up sensor (PC1). A photo sensor is used
as the paper take-up sensor (PC1) and the paper exit sensor (PC3).
Paper Feeding Tray (Standard Tray)
When the paper take-up solenoid is energized, the main motor (M1) drive is transmitted to the
paper take-up roller via the paper take-up clutch (a one-way clutch) to rotate the paper take-up
roller one revolution. At the same time, the depression cam rotates and releases the paper lift-up
plate to feed the top (first) paper. The fixed separating pad is used for the paper separation system.
It prevents the second or later sheets from being fed together with the top paper.
Upper Fusing Roller
Lower
Fusing
Roller
Paper Exit Roller
Paper Exit Sensor
(PC3)
Paper Take-Up
Roller
Depression
Cam
PC Drum
When SL1 is de-energized
Pre-Image Transfer
Roller
Paper Lift-Up Plate
When SL1 is energized
Fixed Separating
Pad
Transport Roller
Paper Take-Up Sensor (PC1)
Paper TakeUp Clutch
Paper Take-Up
Solenoid (SL1)
Paper Lift-Up Plate
Paper
Figure 2-3. Paper Feeding from the Paper Feed Tray
Rev. B
2-3
Operating Principles
EPL-5500 Service Manual
Second Paper Feed Unit (Optional Lower Cassette)
This unit contains no drive motor, so the main motor (M1) drive is transmitted to the paper take-up
and transport sections in the unit via the drive transmission gear. Although the feeding method is
the same as for the paper feed tray in the printer, this unit uses a corner separation system as its
paper separating function. The paper take-up solenoid in the lower cassette is controlled by the
printer via a circuit board in the optional unit.
When the paper regulation plate is set to the inside position, switch S1 on the circuit board is
automatically turned on, causing the printer to recognize that B5-size paper will be fed. On the other
hand, when the paper regulation plate is set to the outside position, S1 remains off, causing the
printer to recognize that A4-size paper will be fed.
Paper Empty Sensor (P|1)
PWB-A
Paper Regulation
Plate
Paper Take-Up Roller
Paper Take-Up Clutch
Drive Transmission
Gear
Paper Lift-Up Plate
Transport Roller
Paper Take-Up
Solenoid
Corner Separation
Plate
Figure 2-4. Paper Feeding from the Lower Paper Cassette
2.1.1.2 Drum Charge
The PC drum is charged with static electricity before laser exposure. The rotating charge brush and
pre-film are used as the charging method. Less ozone is generated by the corona charge of the
rotating charge brush and the pre-film, and the PC drum can be charged with low voltage because
the charge is dirctly applied to the PC drum. The rotating charge brush is rotated by the drive of the
M1 main motor via its gear.
Drum Cartridge
Drum Charging
and Pre-film Bias
C169 MAIN-B
IC201
PWB-F
Rotating Charge
Brush
PC Drum
Protecting
Shutter
PC Drum
Protecting
Shutter
Charged Surface:
(approx. -800 V)
A
PC Drum
B
Pre-film
A: Drum Charging Bias
B: Drum Ground
Figure 2-5. Drum Charge
2-4
Rev. B
EPL-5500 Service Manual
Operating Principles
2.1.1.3 Laser Exposure
The laser beam, emitted from the optical unit, makes an invisible static image. The SOS (start of
scan) sensor, installed on the laser diode control board (PWB-D), unifies the laser emission timing
for each scan line.
Charged Surface
C169 MAIN-B
Reflector Mirror
IC201
CN210
1
5
Laser-Exposed Surface:
(Approx. -50 V)
CN205
PWB-D
1
M2
SOS Sensor
Laser Diode
7
Figure 2-6. Laser Exposure
2.1.1.4 Development
Toner is applied to the invisible static image on the PC drum and a toner image is created on the
surface. When the PC drum starts to rotate (when the main motor is activated), the PC drum
surface remains 0 V at the position between the rotating charge brush and sleeve roller. At this
time, a specified positive voltage is applied to the sleeve roller to prevent toner from being attracted
back onto the PC drum (reverse bias control).
2
4
3
Vs terminal
VBL terminal
VB terminal
VB (Developing Bias)
C169 MAIN-B
VBL (Toner Blade Bias)
PWB-F
IC201
CN204
1
1
8
CN1F
8
Vs (Lower Seal Bias)
Figure 2-7. Development
1. Toner hopper: Contains toner.
2. Toner agitating screw: Stirs the toner in the hopper and sends the toner to the toner transport
roller.
3. Toner transport roller: Transports the toner to the sleeve roller.
4. Doctor blade: Spreads a thin, even coat of toner over the resin sleeve. The toner is negatively
charged by passing between this blade and resin sleeve.
5. Sleeve roller: Rotates the resin sleeve.
6. Resin sleeve: Carries the toner to the PC drum surface for development.
7. Bias seal: Collects the toner remaining on the resin sleeve.
8. PC drum: Is exposed to the laser to create an invisible image and rotates to carry the developed
image to the paper surface.
Rev. B
2-5
Operating Principles
EPL-5500 Service Manual
2.1.1.5 Image Transfer
The electrode comb is an image transfer system that transfers the toner image on the PC drum onto
the paper.
Image Transfer Unit
Housing
Housing
Electrode Comb
Pre-Image Transfer Roller
C169 MAIN-B
Electrode Comb
IC201
PWB-F
PWB-S
1
CN204
1
1
8
8
Housing
1
Pre-Image Transfer
Roller
8
CN1F
8
Housing Ground
Image Transfer Bias
Figure 2-8. Image Transfer
2.1.1.6 Fusing
The toner image transferred onto the paper is fixed securely using a heat roller system as the fusing
system. The upper fusing roller, which is heated by the heater lamp, fuses the toner image, which is
securely fixed by the pressure between the upper and lower fusing rollers. Thermistor TH1 detects
and controls the temperature of the upper fusing roller. Thermal fuse TF1 blows when the
temperature exceeds 200° C, shutting down power to the heater lamp.
Thermal Fuse
Thermistor
Upper Fusing
Roller
Lower Fusing Roller
Heater Lamp
Paper
Figure 2-9. Fusing
2-6
Rev. B
EPL-5500 Service Manual
Operating Principles
2.1.2 Engine Control
This section describes engine control, the power supply board, and the high-voltage supply board.
The engine is controlled by the main board (C169 MAIN-B Board). Figure 2-10 shows the engine
controller connecting diagram.
C169 MAIN-B Board
Main
Motor
(M1)
PWB-D
Laser
Diode
Drive
Polygon
Motor
(M2)
PWB-E
Power
Unit
Fan
Motor
(M2)
Heater Lamp
Interlock Switch
Exit
Sensor
(PC3)
Paper
Take-up
Sensor
(PC1)
Paper
Take-up
Solenoid
(SL1)
Fusing
Roller
Thermistor
(TH1)
Image Transfer
Housing
Image Transfer
Charger
PWB-F
High
Voltage
Unit
Paper
Take-up
Solenoid
(SL2)
PWB-S
PWB-A
2nd Paper Feeding
Unit (Option)
Figure 2-10. Engine Controller Connecting Diagram
Rev. B
2-7
Operating Principles
EPL-5500 Service Manual
2.1.2.1 Main Motor Functions and Control
The M1 main motor transmits the drive to the printer rollers and the optional second paper feed unit
(lower cassette) via each gear as shown below.
Toner Cartridge
Sleeve Roller
A
Paper Exit Roller
Upper Fusing Roller
Lower Fusing
Roller
PC Drum
Pre-image Transfer
Roller
Main Motor (M1)
A
Optional Second Paper Feeding Unit
Paper Take-Up Roller
Paper Transport Roller
Fig.2-11. Gear and Roller Positions
2-8
Rev. B
EPL-5500 Service Manual
Operating Principles
Figure 2-12 shows the main motor drive circuit. The M1 main motor is a four-phase stepping motor
controlled by the CPU (IC201) on the main board (C169 MAIN-B). This board has a stepping motor
driver IC that drives the M1 main motor with a constant current.
Main Board
C169 MAIN-B
Main Motor M1
C N 206
A
A
B
B
1
2
3
4
Figure 2-12. Main Motor Drive Circuit
2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor
The paper take-up sensor has three functions:
1. To detect the top edge of paper. The engine starts printing when the detection signal
is received.
2. To detect paper size. The printer detects the time it takes for paper to pass the paper
take-up sensor during paper feeding. If this time is long, longer paper is feeding;
if the time is short, shorter paper is feeding.
3. To detect paper jams and feed jams.
If the paper take-up sensor does not turn on for paper feeding, the printer detects a feed jam or no
paper. A feed jam is a paper jam that occurs in the feed process.
If any of the following conditions is detected, the printer detects a paper jam. A paper jam is a jam
that occurs in the printing process area.
•
The paper take-up sensor (PC1) or the paper exit sensor (PC3) is on at power on or when the
upper case is closed.
•
The paper take-up sensor (PC1) or the paper exit sensor (PC3) is not turned on/off within the
specified time. (Refer to the following timing chart.)
Take Up Solenoid ON
PC1
(CN203-3)
PC3
(CN208-3)
2.0
[seconds]
11.0
3.5-4.5
3.4-4.7
Figure 2-13. Paper Take-Up Sensor and Paper Exit Sensor
On/Off Timing
Rev. B
2-9
Operating Principles
EPL-5500 Service Manual
2.1.2.3 Fuser Control
The heater lamp, powered by AC voltage, heats the fuser. When the power supply board receives
a FUSER signal from the main board (C169 MAIN-B), the power supply board (PWB-E) supplies
the AC voltage to the heater lamp. This AC voltage is cut by an interlock switch when the case is
open.
Thermistor TH1 detects the surface temperature of the upper fusing roller and inputs that analog
voltage to the 77-pin chip, IC201. Based on this temperature data, the heater lamp on/off signal (the
FUSER signal) is output from the 54-pin chip, IC201, causing heater lamp H1 to turn on or off to
control the fusing temperature. When the heater lamp is not turned off even if the thermistor detects
a high temperature malfunction (which occurs if the surface temperature of the upper fusing roller
exceeds 200º C), the signal from the 75-pin chip, IC201, changes from H to L to turn off the heater
lamp forcibly.
C169 MAIN-B
Analog Voltage Detected by the
Thermistor (TH1)
IC201
CN202
1
2
77
5 VDC
54
75
H
2 H
3
L
5
6
H
IC202B
IC202A
1
H
4
3
TH1
Thermistor
CN207
1
L
4
1
5
L
CN3E
1
2
3
PWB-E
5
Heater Lamp
H1
TF1
Thermal Fuse
CN1E
Heater Lamp
ON/OFF Signal
L H1:ON
H H1:OFF
Figure 2-14. Fuser Control Circuit
The following figure shows the fuser temperature control procedure.
When a print is made immediately after warm up
Temperature
(Degrees C)
172
156
112
Time
Powe r On
Warm up
Standby
Standby with Low
Temperature
Figure 2-15. Temperature for Fuser Control Procedure
1. Warm up: After printer initialization, printer warm up starts, and the heater lamp turns on until
the upper fusing roller’s temperature reaches approximately 172º C.
2. Standby: In standby mode, the upper fusing roller’s temperature is controlled to maintain 156º C.
When this condition continues for 3 minutes, the printer goes into standby mode at low
temperature.
3. Print cycle: When the printer receives the printing command from the controller, the upper
fusing roller is controlled to maintain 172º C.
4. Standby at low temperature: The upper fusing roller is controlled to maintain 112º C.
2-10
Rev. B
EPL-5500 Service Manual
Rev. B
Operating Principles
2-11
Operating Principles
EPL-5500 Service Manual
If any of the following conditions are detected, the printer indicates a fuser error:
1. If the thermistor detects the temperature has not risen by 20º C for 50 msec. within 12 to 30 sec.
after warm up. (This error applies only when the thermistor detects a temperature of 90º C or less.)
2. If the thermistor detects that the temperature has not reached 172º C within 60 sec. after warm
up.
3. Except in pause mode (see the note below), if the thermistor detects that the temperature in the
idle state has fallen to 80º C or lower for 50 msec., or the temperature during printing has fallen
to 133º C or lower.
4. The thermistor detects that the temperature has exceeded 193º C for 50 msec. during
temperature
control.
Note:
Pause Mode: In this mode, the control temperature is decreased to save power in the idle
state, the heater lamp is turned OFF.
Thermo fuse TF1 cuts power if the temperature of the fusing section rises to an abnormally high
level (over 200° C, 392° F).
2.1.2.4 Scanner Motor Control
Figure 2-16 is the scanner motor (M2) control circuit. The scanner motor is driven while it receives
the POLYGON CTL signal. Motor rotation speed is 8622 rpm
Main Board
(C169 MAIN-B)
Scanner Motor
M2
CN210
NC
+24V
GND2
+5V
P_CTL
1
2
3
4
5
Figure 2-16. Scanner Motor Control Circuit
If the any of following conditions are detected, the printer indicates a scanner motor error:
1. The SSCAN signal has not been given once within 1 sec. after the scanner motor is energized.
2. The number of scanner motor rotations has not stabilized within ± 0.5 rpm by 4.2 sec. after the
motor is energized.
3. The number of scanner motor rotations has exceeded ± 3% for more than 0.5 sec. after the motor
is energized, even if the rotation number stabilizes within ± 0.5 rpm.
2-12
Rev. B
EPL-5500 Service Manual
Operating Principles
2.1.2.5 Laser Diode Drive
Figure 2-17 shows the laser diode drive circuit. Laser diode emission is controlled by three signals
(LDATA, LDAPC1, and LDAPC2) from the main board (C169 MAIN-B).
Laser Diode
SSCAN
LD_CTL
LDAPC1
LDAPC2
SOS Mirror
LD
SOS
(PWB-D)
L DATA
SOS Sensor
Main Board
(C169 MAIN-B)
Figure 2-17. Laser Diode Drive Circuit
The LDATA signal is the laser on/off signal. When it is LOW, the laser emits, and when it is HIGH,
the laser stops emitting. LDATA is the combination of the two signals in the figure below. If the
VIDEO or the FORCED LASER DIODE ON signal is activated (LOW), the LDATA signal will be
active. The VIDEO signal is an image signal sent from the video controller circuit. The FORCED
LASER DIODE ON signal is a laser emission signal to apply the laser beam to the SOS sensor.
Forced Laser Diode ON
L DAT A
VIDEO
from the Video
Controller Circuit
(C169 MAIN-B)
Figure 2-18. LDATA Generation Circuit
The laser diode is forcibly activated after scanner motor M2 turns on. At this time, laser emission
power is adjusted. LDAPC1 and LDAPC2 are the laser emission power adjust signals; they are
analog signals. LDAPC1 is a tuning, and LDAPC2 is a fine tuning.
Scanner Motor On
LDATA
LDAPC1
LDAPC2
P_CTL
Figure 2-19. Laser Emission Power Adjustment Timing
If any of the following conditions are detected, the printer indicates a laser error:
The LDAPC1 signal or LDAPC2 signal has been out of the specified range while laser power is
adjusted.
Rev. B
2-13
Operating Principles
EPL-5500 Service Manual
2.1.2.6 Bias Voltages and Laser Drive Timing
Figure 2-20 is a diagram of the drum charge bias voltage, image transfer bias voltage, and the
developing bias voltage control circuit. These bias voltages are generated from the +24 VDC from
the high-voltage supply board (PWB-F). If the printer detects a case-open condition, the interlock
switch is set to off, which cuts the +24 VDC, which, in turn, cuts the bias voltages.
These bias voltages are controlled by the main board (C169 MAIN-B). The HV-T signal is the
image transfer bias voltage control. While this signal is LOW, the image transfer electrode comb is
charged to from +3 to +6K VDC by the high-voltage supply circuit. HV SEL1 and HV SEL2 are
image transfer bias level control signals.
The HVB signal is the digital signal for developing bias voltage control. This signal controls the bias
on/off. The BIAS MON signal controls the bias voltage level (–300 V to –375K VDC) using pulse
data. The image density is controlled by the developing bias voltage level.
Main
Board
(C169 MAIN-B)
Power Supply
Board
(PWB-E)
High Voltage Supply
Board
(PWB-F)
PWB-S
+24 VDC
+24 VDC
Interlock
SW
HV-C
HV-T
HV SEL1
HV SEL2
HV B
BIAS MON
Drum Charge
-2.0 K VDC
Image Transfer
Bias
3K to 6 K VDC
Developing
Bias
-270 to -370 VDC
Doctor Toner Blade
Bias -500 VDC
Seal Bias
-250 VDC
Figure 2-20. High-Voltage Supply Block Diagram
2-14
Rev. B
EPL-5500 Service Manual
Operating Principles
Figure 2-21 shows the print process.
Brush Roller Charging
Laser Exposure
PC Drum
Development
Image Transfer
Figure 2-21. Print Process
Figure 2-22 shows the start print sequence. The printer’s engine starts printing when it receives the
PRINT signal from the video controller circuit.
M3 normal rotation
Polygon Motor
(M3)
20
1st: 790 to 1300
2nd: 2670 to 3080
Paper Take-up
Sensor (PC1)
Paper Take-up
Solenoid
(SL1/2)
500
Main Motor
(M1)
150
Drum Charge
Laser
Exposure
[m sec.]
4000
Print
C o mm a n d
1st:770, 2nd:2820
2310
200
Development
260
500
480
300
Image
Transfer
1st: 1510
2nd: 1680
Figure 2-22. Print Sequence (Start)
Figure 2-23 is the end of the print sequence.
[m sec.]
Polygon Motor
(M3)
Paper Exit
Sensor (PC3)
5160
Main Motor
(M1)
Drum Charge
850
480
Laser
Exposure
Development
Image
Transfer
Figure 2-23. Print Sequence (End)
Rev. B
2-15
Operating Principles
EPL-5500 Service Manual
2.1.2.7 Fan Motor Control
The fan motor (M3) rotates at engine initialization, and stops after 2 sec. The fan motor also rotates
during printing. When printing ends, the fan motor stops after 3 min. If the following condition is
detected, the printer indicates a Fan motor error.
The voltage equivalent to the motor current of the fan motor remains 160 mV or lower for 2 sec.
2.1.2.8 Power Supply Circuit Function and Safety Protection
The printer’s power supply board (PWB-E) supplies the +5 VDC and +24 VDC. The +24 VDC is
used as the bias voltage supply, main motor (M1) drive, scanner motor (M2) drive, fan motor (M3)
drive, and solenoid drive. For safety protection, the +24 VDC line is cut when the interlock switch
(case open switch) is off.
Interlock
SW
+24 VDC
AC IN
Power Supply Board
(PWB-E)
+5 VDC
SG
FG
Figure 2-24. Power Supply Circuit Block Diagram
2-16
Rev. B
EPL-5500 Service Manual
Operating Principles
2.2 VIDEO CONTROLLER OPERATION
The video controller section generates the video signals for received data. The video controller
section is the C169 MAIN-B Board.
C169 MAIN-B Board
Video Controller Section
Engine Controller Section
Figure 2-25. Video Controller Section
2.2.1 C169 MAIN-B Board Operation
Figure 2-26 shows a block diagram of video controller section of the C169 MAIN-B Board. The
C169 MAIN-B Board contains the video controller, which consists of a MB86933H (SPARKlite, 22.5
MHz, 32-bit bus) RISC CPU; the standard cells developed for this printer; DRAMs; ROM; and an
EEPROM.
CPU
M B86933H
(IC1)
RO M 16M
(IC21, 22 or
IC13, 14,
15, 16)
E E PR O M
(IC11)
RO M 8
(IC12)
A D D R ES S
DATA
CO NTRO L
E05A91
(IC 2)
E05A92
(IC3)
E05A93
(IC4)
I/O DATA
A D D R ES S
D R AM s
(IC 17, 18)
an d
SI M M
Option
Video I/F
Par allel
I/F
RS-232C
Specific I/F
LocalTalk
Figure 2-26. C169 MAIN-B Board Block Diagram
Rev. B
2-17
Operating Principles
EPL-5500 Service Manual
Table 2-1 lists the functions of the main elements of the video controller section in C169 MAIN-B
Board.
Table 2-1. Functions of C169 MAIN-B Board Main Elements
Element
MB86933H
CPU
Location
RISCIC1
Function
The CPU, which operates at 22.5 MHz, manages the video
controller operation.
E05A91 ASIC
IC2
This ASIC contains the following functions:
•Address decoding
•DRAM management (refresh control,
RAS/CAS control)
E05A92 ASIC
IC3
This ASIC contains the following functions:
•Video signal processing
•Toner save function
•BiRITech
•EMGTech
E05A93 ASIC
IC4
This ASIC contains the following functions:
•Video interface
•Bi-parallel interface
•LocalTalk module control
•Type-B EX interface box control
Two 8M ROMs or
four 4M ROMs
IC21,22 or
These ROMs are code and font ROMs.
IC13,14,15,16
8M ROM
IC12
This ROM is a local language (font) ROM option (except in
the U.S. model).
EEPROM
IC11
This EEPROM stores the following:
•Model type
•Printed page counter value
•Jam counter value
•Printer setting
DRAM
IC17,18
These DRAMs are used as the working area of the CPU:
input buffer, image buffer, etc.
2-18
Rev. B
EPL-5500 Service Manual
Operating Principles
Print data and commands transmitted from the host computer via the parallel or optional interfaces
are read using the CPU interrupt process and stored in the DRAM input buffer. Data and commands
in the input buffer are processed by the CPU, which then stores the printing bitmap data (image
data) in the V (video) -RAM (image buffer) area of the DRAM. The size of the V-RAM depends on
the available DRAM size. A “PRINT OVERRUN” occurs when the V-RAM is so small that the CPU
cannot process data faster than it is transmitted to the engine controller board. If such an error
occurs, the user can increase the V-RAM using the printer setting “IMAGE OPTIMUM.”
The E05A91 transmits image data stored in the V-RAM to the E05A92. The E05A92 changes the
image data format from 32-bit parallel data to serial data, and stores it in the internal temporary
buffer. The temporary buffer has a capacity equivalent to several lines. This is controlled by the
E05A92, which synchronizes and transmits the temporary buffer’s data to the engine controller
board. The E05A92 then manipulates the printer data based on the BiRITech, EMGTech, and toner
saver settings.
CPU
MB86933H
(IC1)
E05A91
(IC2)
E05A93
(IC4)
Host Computer
Temporary
Buffer
RITech
EMGTech
Toner save
Video
Dev elopm ent
Parallel/Ser ial
Convert er
Input Buffer
VR AM
E05A92
(IC3)
System Area
DRAM
Figure 2-27. Data Flow Diagram
Rev. B
2-19
Operating Principles
EPL-5500 Service Manual
2.2.1.1 Reset Circuit
The entire system (CPU and external devices) can be initialized if the RESET signal (CPU pin 113)
are active simultaneously. This circuit uses an M51938 IC to monitor the supply voltage if a voltage
level less than 4.25 V is detected. The reset time is approximately 128 ms.
+5 V
+5 V
Vcc
OUT
RSTIN
M51938FP
(IC6)
+
RESET
RSTOUT
E05A92
(IC3)
C
Figure 2-28. Reset Circuit
2.2.1.2 Bus Control Circuit
The MB86930 CPU outputs the R/W (read/write) signal, AS (address strobe) signal, and the BE0,
BE1, BE2, and BE3 signals (byte enables) to the ASIC E05A91. The ASIC E05A91 uses these
signals to generate the RD (read strobe) signal, WR (write strobe) signal, and READY signal.
R/W
AS
CPU
MB86933H
(IC1)
BE0-3
READY
Address
Bus
Data
Bus
E05A91
(IC2)
RD
WR
Figure 2-29. Bus Control Circuit
2-20
Rev. B
EPL-5500 Service Manual
Operating Principles
2.2.1.3 Interrupt Control
The ASIC E05A93 determines the priority level of the interrupt and outputs it to terminals IRL0 IRL3. Then an interrupt is sent to the CPU. When the IRL0-3 value is 1111b, the CPU process is a
non-maskable interrupt process. When the IRL0-3 value is 0000b, the CPU process is a standard
process. When the IRL0-3 is any other value, the CPU process is a maskable interrupt process.
2.2.1.4 DRAM Management
The video controller uses DRAMs for the system RAM and for the V-RAM. In this printer, a standard
two 512K × 16 DRAMs are mounted in locations IC17 and IC18, providing a total of 1MB. CN2
SIMM sockets are provided for optional SIMM memory modules. These SIMM sockets can use 1, 2,
4, 8, 16, and 32 MB SIMMs (32-bit bus).
The DRAMs (including optional SIMMs) are managed by the ASIC E05A91. E05A91 outputs
MA0-10 (memory address), RAS/CAS, and WE signals.
RAS1,2
RAS0
DWE
DRAM
(IC17)
E05A91
(IC2)
DRAM
(IC18)
SIMM
CAS0,1,2,3
MA0-10
CPU DATA BUS
Figure 2-30. DRAM Management
Rev. B
2-21
Operating Principles
EPL-5500 Service Manual
2.2.1.5 Parallel Interface Circuit
Figure 2-31 shows a circuit block diagram of the parallel interface. Data sent from the host
computer is latched within the E05A93 by the STROBE signal. The E05A93 outputs a BUSY signal
automatically to stop the host computer from sending additional data. The CPU resets the BUSY
signal after reading the data from the E05A93, so that the printer is ready to receive more data from
the host computer.
DATA
STROBE
Latch
E05A93
(IC4)
BUSY
Figure 2-31. Parallel Interface Circuit
2-22
Rev. B
EPL-5500 Service Manual
Operating Principles
2.2.1.6 Video Interface
The ASIC E05A92 maps the SRAM into a memory space different from the system memory. The
CPU transmits data from the V-RAM (in the system RAM) to the SRAM using the ASIC E05A92.
The ASIC cell converts the image data in the SRAM from parallel to serial, synchronizes it, and then
transmits it to the engine controller board. In other words, the SRAM is a temporary buffer used to
transmit the image data to the engine controller board. This serial image data is called the VIDEO
signal of video interface.
The signal line of the internal video interface circuit (the C125 MAIN board and engine controller
board) can be broadly divided into four groups. The first group (PRINT, CPRDY, EPRDY, and
PRDY) gives the status of either the video controller or engine controller and indicates whether they
are ready to communicate with each other or ready to start the printing operation. The second
group (VSYNC, HSYNC) is the synchronizing signal for the printing operation. The third group
(VIDEO) is the serial video data signal. The fourth group (CMD, SRCLK, CTBSY, and ETBSY) is
used to transfer the commands (from the video controller) or the status (from the engine controller)
for printer mechanism control. Except for VIDEO, PRINT, VSINC, and HSYNC, all signals are
controlled by ASIC E05A93.
This printer has BiRITech and EMGTech functions standard. These functions modify the VIDEO
signal with the ASIC E05A92.
Rev. B
2-23
Chapter 3
Disassembly and Assembly
Table of Contents
3.1 GENERAL INFORMATION
3.1.1 Precautions for Disassembly/Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2 Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3 Small Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.4 Service Checks after Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-1
3-1
3-2
3-3
3.2 DISASSEMBLY AND ASSEMBLY
3-4
3.2.1 Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.1.1 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.2 Removal of the Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.2.2.1 Main Board (C169 MAIN-B Board) Removal. . . . . . . . . . . . . . . . . 3-5
3.2.3 Disassembling the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.3.1 Optical Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.3.2 Image Transfer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.2.3.3 Upper Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.2.3.4 High-Voltage Supply Board (PWB-F) Removal . . . . . . . . . . . . . . 3-10
3.2.3.5 Power Supply Unit (PWB-E) Removal. . . . . . . . . . . . . . . . . . . . . 3-11
3.2.3.6 Fusing Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.2.3.7 Fusing Unit Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.2.3.8 Main Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal. 3-21
3.2.3.10 Paper Take-Up Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
List of Figures
Figure 3-1. Removing the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Figure 3-2. Removing the Shield Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Figure 3-3. Removing the C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Figure 3-4. Removing the Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Figure 3-5. Removing the Image Transfer Unit -1. . . . . . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-6. Removing the Image Transfer Unit -2. . . . . . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-7. Moving the Image Transfer Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Figure 3-8. Reinstalling the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Figure 3-9. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Figure 3-10. Removing the Upper Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Figure 3-11. Removing the PWB-F Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Figure 3-12. Removing the PWB-F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Figure 3-13. Removing the PWB-E Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-14. Removing the PWB-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-15. Gear and Spring Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Figure 3-16. Removing the Fusing Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Figure 3-17. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Figure 3-18. Removing the Fusing Entrance Guide . . . . . . . . . . . . . . . . . . . . . 3-13
Figure 3-19. Removing the Fusing Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Figure 3-20. Roller Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Figure 3-21. Removing the Heater Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Figure 3-22. Removing the Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Figure 3-23. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Figure 3-24.
Figure 3-25.
Figure 3-26.
Figure 3-27.
Figure 3-28.
Figure 3-29.
Figure 3-30.
Figure 3-31.
Figure 3-32.
Figure 3-33.
Figure 3-34.
Figure 3-35.
Removing the Paper Separator . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Exit Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the G-Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Upper Fusing Roller . . . . . . . . . . . . . . . . . . . . . . .
Removing the Lower Fusing Roller . . . . . . . . . . . . . . . . . . . . . . .
Removing the Thermal Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Motor Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Main Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Ground Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Paper Guide ASSY. . . . . . . . . . . . . . . . . . . . . . . .
Removing the Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Paper Take-Up Roller. . . . . . . . . . . . . . . . . . . . . .
3-17
3-17
3-18
3-18
3-19
3-19
3-20
3-20
3-21
3-21
3-22
3-22
List of Tables
Table 3-1. Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Table 3-2. Screw Types and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Table 3-3. Checks after Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
EPL-5500 Service Manual
Disassembly and Assembly
3.1 GENERAL INFORMATION
This chapter describes disassembly/assembly procedures to be used for replacing the main
assemblies of the EPL-5500.
3.1.1 Precautions for Disassembly/Assembly
Follow the precautions below when disassembling/assembling the printer.
WARNING
❒ Disconnect the power cord before disassembling/assembling the printer.
❒ Be sure to handle the fusing unit carefully, because the unit remains hot for a while
after
the printer stops printing.
❒ If it is necessary to plug in the power cord and operate the printer after disassembling
it,
please be careful of the following:
1. Keep your hands and clothing well away from operating or rotating parts (such as
rollers, fan motors, etc.).
2. Never touch electric terminals or high-voltage components (such as the charger and
the
high voltage unit).
CAUTION
❒ Do not disassemble the photoconductor unit and toner cartridge.
❒ If the photoconductor unit is removed from the printer, do not place it in direct sunlight.
❒ Do not disassemble the optical unit.
❒ Never turn power on if the optical unit is not installed.
❒ To prevent damage to ICs from static electricity, do not touch the ICs on the circuit
board or the terminals of peripheral electrical components with your hands.
❒ Use only the recommended tools to ensure safe and efficient maintenance work.
Inappropriate tools may damage the machine.
❒ Never open the upper unit until the main motor stops completely. Otherwise, the gears
may be damaged.
❒ When transporting the printer, remove the photoconductor unit and toner cartridge
from
the printer.
❒ When transporting the printer a long distance, pack up the printer using the original
packing material.
3.1.2 Tools
Use the tools listed in Table 3-1 for disassembling/assembling the printer and for troubleshooting.
Table 3-1. Tools
Name
Rev. B
Commercially Available?
Part No.
Philips screwdriver no. 2
Yes
B743800200
Regular screwdriver
Yes
B743000100
Tweezers
Yes
B641000100
Soldering iron
Yes
B740200100
Round-nose pliers
Yes
B740400100
3-1
Disassembly and Assembly
EPL-5500 Service Manual
3.1.3 Small Parts
In the following sections, abbreviations are used for small parts, such as screws and washers.
Tables 3-2 and 3-3 list these abbreviations.
Table 3-2. Screw Types and Abbreviations
Standard
No.
Type
Appearance
Size
(mm)
Length
(mm)
4
8
3
6/8
3
6/8/14
3
6/8/10/12
3
8
3
8
3
8
CB
#1
CB(S)(P1)
#2
CBS
#3
CCS
#4
CCB
#5
CBB
#6
CBS(O)
#7
Pin
E-Ring
3-2
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.1.4 Service Checks after Repair
Check the repaired unit using the following list on completion of servicing.
Table 3-3. Checks after Repair
Item
Operation
Adjustment
Location
Checkpoint
Control panel
Do all LEDs and button function normally?
Heater lamp
Does the heater lamp turn on normally?
Test print
(status sheet)
Is the test print performed normally?
Data print
Does data print in all modes?
Print position
Is the gap between the top edge of the paper and
the horizontal line in the status sheet print exactly
29.6 mm (1.17 inch).
ROM version
Is it the latest version?
Cleaning
Is toner and dust removed from the paper path?
Is the paper take-up roller cleaned?
Is the roller in the fusing unit cleaned?
Is the outer surface of the printer clean?
Packing
Is the consumable removed from the printer?
Is the unit packed securely?
Are accessories packed also?
Rev. B
Check
3-3
Disassembly and Assembly
EPL-5500 Service Manual
3.2 DISASSEMBLY AND ASSEMBLY
This section describes and illustrates the procedures for removing and disassembling the
components of the EPL-5500. Cleaning is described in Chapter 6. The assembly procedures are
not described, except for special notes where necessary, because assembly can be accomplished
by performing disassembly in reverse.
3.2.1 Housing Removal
This section describes how to remove the cases and the rear frame.
3.2.1.1 Case Removal
1.
Push the upper unit lock release button and open the upper unit.
2.
Remove each cover in the following turn.
ASSEMBLY POINTS
When reinstalling each cover, securely insert the protrusions of the cover into the cutouts
of the printer frame.
4. Rear Cover
3. Operation
Cover
Upper unit
Upper unit lock
release button
2. Front Cover
1. Left cover
Figure 3-1. Removing the Housing
3-4
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.2 Removal of the Controller Section
The control section is comprised of the controller board (the C169 MAIN-B Board).
3.2.1.1 Main Board (C169 MAIN-B Board) Removal
CAUTION
Before you remove the video controller board, make sure that you remove any optional
LocalTalk/ serial board or Type-B EX box.
1.
Turn the printer so that its right side faces you.
2.
Remove the right cover.
3.
Remove 2 screws (#3), and then remove the shield case.
Figure 3-2. Removing the Shield Case
4.
Disconnect all connectors on the C169 MAIN-B Board.
5.
Remove the 5 screws (#4) for the C169 MAIN-B Board.
6.
Remove the C169 MAIN-B Board.
Figure 3-3. Removing the C169 MAIN-B Board
Rev. B
3-5
Disassembly and Assembly
EPL-5500 Service Manual
3.2.3 Disassembling the Engine
This section describes disassembling the engine, including the high voltage unit (PWB-F) and
power supply board (PWB-E).
3.2.3.1 Optical Unit Removal
CAUTION
❒ Do not touch the optical unit except at the time of replacement.
❒ Do not open the unit under any conditions.
❒ Do not remove the circuit board from the optical unit under any conditions.
1.
Open the top cover.
2.
Remove the right cover, left cover, and front cover. (Refer to Section 3.2.1.1.)
3.
Remove the cover shield plate.
4.
Disconnect connector CN205 and CN210 from the C169 MAIN Board.
4.
Remove the 6 screws (#4) from the optical unit.
5.
Remove the optical unit.
Figure 3-4. Removing the Optical Unit
3-6
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.3.2 Image Transfer Unit Removal
1.
Open the top cover.
2.
Remove the harness cover A. (Refer to Section 3.2.3.3.)
3.
Remove the 2 screws (#5) and holders at both ends of the image transfer unit.
Figure 3-5. Removing the Image Transfer Unit - 1
4.
Disconnect the 2 connectors and remove the unit.
Figure 3-6. Removing the Image Transfer Unit - 2
Rev. B
3-7
Disassembly and Assembly
EPL-5500 Service Manual
ASSEMBLY POINTS
After reinstalling the image transfer unit, check that the unit smoothly moves up and
down.
Figure 3-7. Moving the Image Transfer Unit
5.
Remove the remove the electrode comb.
ASSEMBLY POINTS
When reinstalling the electrode comb, be careful of the direction of installation. Install the
electrode comb so that the terminal of the comb faces the image transfer roller drive gear.
Figure 3-8. Reinstalling the Electrode Comb
3-8
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.3.3 Upper Unit Removal
1.
Open the upper unit.
2.
Remove the right cover and left cover. (Refer to Section 3.2.1.1.)
3.
Disconnect connectors CN202, CN208, and CN211 from the C169 MAIN-B.
4.
Remove harness covers A and B, and pull out the CN1 of the PWB-E board.
5.
Remove the image transfer unit. (Refer to Section 3.2.3.2.)
A
B
Figure 3-9. Removing the Harness Cover
6.
Slide and remove the unit as in the illustration.
Figure 3-10. Removing the Upper Unit
Rev. B
3-9
Disassembly and Assembly
EPL-5500 Service Manual
3.2.3.4 High-Voltage Supply Board (PWB-F) Removal
1.
Open the top cover.
2.
Remove 1 screw (#5) from the PWB-F cover.
3.
Remove the PWB-F cover.
Figure 3-11. Removing the PWB-F Cover
4.
Remove the 4 screws (#5) from the PWB-F board.
5.
Disconnect 2 connectors.
6.
Remove the PWB-F board.
Figure 3-12. Removing the PWB-F
3-10
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.3.5 Power Supply Unit (PWB-E) Removal
1.
Remove the upper unit. (Refer to Section 3.2.3.3.)
2.
Remove 6 screws (#4:2, #7:2), and remove the PWB-E cover.
Figure 3-13. Remove the PWB-E Cover
3.
Disconnect connector CN207 from the C169 MAIN-B Board.
4.
Remove 4 screws (#4) and 2 screws (#6), and remove the PWB-E.
Figure 3-14. Removing the PWB-E
Rev. B
3-11
Disassembly and Assembly
EPL-5500 Service Manual
3.2.3.6 Fusing Unit Removal
1.
Open the top cover. (Refer to Section 3.2.3.3.)
2.
Remove the image transfer unit. (Refer to Section 3.2.3.2.)
3.
Remove 1 screw (#5), and remove the drive tension section of the fusing unit.
4.
Remove the transport gear.
5.
Release the hook of the spring and remove the drive gear section of the fusing unit.
ASSEMBLY POINTS
When rehooking the spring, be sure to hook it at the correct position.
drive gear section
of the Fusing unit
drive transport
gear
hook of the
spring
drive tension section
of the Fusing unit
Figure 3-15. Gear and Spring Position
6.
Remove 4 screws (#5), and remove fusing guide plate.
Figure 3-16. Removing the Fusing Guide Plate
3-12
Rev. B
EPL-5500 Service Manual
7.
Disassembly and Assembly
Remove the harness cover.
Figure 3-17. Removing the Harness Cover
8.
Remove the fusing entrance guide.
Figure 3-18. Removing the Fusing Entrance Guide
Rev. B
3-13
Disassembly and Assembly
EPL-5500 Service Manual
10. Remove 4 screws (#5), and remove the fusing unit.
Figure 3-19. Removing the Fusing Unit
ASSEMBLY POINTS
After reinstalling the fusing unit, check the direction of the bushings on the paper exit
roller and the connection condition between the roller and the ground plate.
Figure 3-20. Roller Position
3-14
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.3.7 Fusing Unit Disassembly
This section describes how to remove the paper exit sensor, heater lamp, lower fusing roller, and
upper fusing roller.
Heater Lamp
CAUTION
Do not touch the glass surface of the lamp with your bare hands.
1.
Remove the fusing guide plate. (Refer to Section 3.2.3.6.)
2.
Pull the heater lamp out of the lamp holder from the front side.
Figure 3-21. Removing the Heater Lamp
ASSEMBLY POINTS
When reinstalling the lamp, position its voltage indication to the left side (non-gear end.).
Rev. B
3-15
Disassembly and Assembly
EPL-5500 Service Manual
Thermistor
1.
Remove the fusing unit. (Refer to Section 3.2.3.6.)
2.
Remove the 1 screw (#4), and remove the thermistor.
Figure 3-22. Removing the Thermistor
ASSEMBL POINTS
When reinstalling the thermistor, wire the harness as shown below.
Figure 3-23. Wiring
3-16
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
Paper Separator
1.
Remove the fusing unit. (Refer to Section 3.2.3.6.)
2.
Release the lock of the holder and remove the 3 paper separator.
Figure 3-24. Removing the Paper Separator
ASSEMBLY POINTS
When reinstalling the paper separators, be careful of these positions as the middle one
differs from others.
Paper Exit Sensor
1.
Remove the fusing unit. (Refer to Section 3.2.3.6.)
2.
Remove the paper exit sensor.
Figure 3-25. Paper Exit Sensor
Rev. B
3-17
Disassembly and Assembly
EPL-5500 Service Manual
Fusing Roller
1.
Remove the fusing unit. (Refer to Section 3.2.3.6.)
2.
Remove the 2 G-rings from the fusing unit.
Figure 3-26. Removing the G-Rings
CAUTION
When reinstalling the G-rings:
❒ Be careful of the direction.
❒ Securely position them into the grooves of the fusing roller.
3.
Remove the upper fusing roller drive gear.
4.
Remove the upper fusing roller.
Figure 3-27. Removing the Upper Fusing Roller
3-18
Rev. B
EPL-5500 Service Manual
5.
Disassembly and Assembly
Take out the lower fusing roller.
Figure 3-28. Removing the Lower Fusing Roller
Thermal Fuse
1.
Remove the fusing unit. (Refer to Section 3.2.3.6.)
2.
Remove 2 screws (#5), and remove the thermal fuse.
Figure 3-29. Removing the Thermal Fuse
Rev. B
3-19
Disassembly and Assembly
EPL-5500 Service Manual
3.2.3.8 Main Motor Removal
1.
Remove the housing components. (Refer to Section 3.2.1.1.)
2.
Remove 1 screw (#4) which fixing the motor bracket and the 2 screws (#2) which fixing the
main motor, and remove the main motor together with the bracket.
Motor bracket
Screw (#2)
Screw (#4)
Figure 3-30. Removing the Motor Bracket
Motor bracket
Main motor
Figure 3-31. Removing the Main Motor
3-20
Rev. B
EPL-5500 Service Manual
Disassembly and Assembly
3.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal
1.
Remove the housing components. (Refer to Section 3.2.1.1.)
2.
Turn over the printer on its back.
3.
Remove the 4 screws (#6), and remove the ground plate.
4.
Turn up the lifting plate.
Screw (#6)
Ground plate
Figure 3-32. Removing the Ground Plate
ASSEMBLY POINT
When turnning up the lifting plate, be carefull with the grounding plate which overlapping
the lifting plate.
5.
Remove the 2 screws (#6), and remove the paper guide assembly.
6.
Remove the paper take-up sensor and the paper take-up solenoid from the assembly.
Lifting plate
Turn up the plate
Screw (#6)
Paper guide ASSY.
Figure 3-33. Removing the Paper Guide ASSY.
Rev. B
3-21
Disassembly and Assembly
EPL-5500 Service Manual
3.2.3.10 Paper Take-Up Roller Removal
1.
Remove the main motor. (Refer to Section 3.2.3.8.)
2.
Remove the paper guide assembly. (Refer to Section 3.2.3.9.)
3.
Remove the 6 screws (#4:2, #5:4), and remove the left frame.
4.
Remove the 2 gears (GEAR 29/65T, GEAR 22/57T), specified in the figure below.
Remove Gears (2)
Paper Take-up Roller Shaft
Slide out
Figure 3-34. Removing the Gears
5.
At the bottom of the printer, remove the E-ring fixing the paper take-up roller shaft.
6.
Unhock the paper take-up roller and slide the shaft to the end of the shaft where the driven
gear is attached, then remove the paper take-up roller.
ASSEMBLY POINT
When removing the paper take-up roller from the shaft, be sure not to lose the pin.
Paper Take-up Roller
E-Ring
Paper Take-up Roller Shaft
Figure 3-35. Removing the Paper Take-Up Roller
3-22
Rev. B
Chapter 4
Adjustment
Table of Contents
4.1 ADJUSTMENT
4-1
4.1.1 Print Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
List of Figures
Figure 4-1. Print Position Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
EPL-5500 Service Manual
Adjustments
4.1 ADJUSTMENTS
This section describes the adjustment procedures for the EPL-5500. You must perform these
adjustments after servicing the printer, especially when any component or part is replaced.
4.1.1 Print Position Adjustment
You can adjust the vertical print position on a sheet of paper by turning the image synchronizing
volume control on the main board (C169 MAIN-B). After replacing a main board, be sure to adjust
the print position using the procedure below.
1.
Print a status sheet.
2.
Check that the registration gap between the leading edge of the sheet and the horizontal line
printed on the page is within the following range:
29.6 ± 2.5 mm (1.17 ± 0.01 inches)
for a status sheet page on A4/letter paper:
If the gap is not correct, adjust the print position as described in the next few steps.
29.6 mm
Leading Edge
EPSON EPL-5500
Status Sheet
Default Settings
Figure 4-1. Print Position Adjustment
3.
Turn printer power off.
4.
Open the right cover and shield plate. (See Chapter 3.)
5.
Adjust the image synchronizing adjustment volume (VR201) on the main board (C169 MAIN-B)
so that the gap for the print position of the horizontal line (down from the top edge of the sheet)
becomes 29.6 mm (1.17 inches) .
•Turn VR201 clockwise to increase the gap for the print position of the horizontal line.
•Turn VR201 counterclockwise to decrease the gap.
6.
Turn on the printer.
7.
Print a status sheet again to check the print position.
8.
Repeat steps 5 to 7 until the print position is 29.6 mm (1.17 inches).
9.
Reattach the shield plate and right case.
Rev. B
4-1
Chapter 5
Troubleshooting
Table of Contents
5.1 OVERVIEW
5-1
5.2 SELF-DIAGNOSTIC FUNCTION
5-1
5.2.1 SOFT ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2.2 Service Call Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 TROUBLESHOOTING
5-4
5.3.1 Troubleshooting of Abnormal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.2 Print Quality Anomaly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
List of Tables
Table 5-1. SOFT ERROR Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Table 5-2. Service Call A Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table 5-3. Service Call B Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Table 5-4. Symptoms and Reference Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Table 5-5. The Printer Does Not Operate at All . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Table 5-6. Both LED Lights Do Not Come On. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Table 5-7. The LED Does Not Come On (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Table 5-8. The LED Does Not Come On (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Table 5-9. The LED Does Not Come On (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Table 5-10. The LED Does Not Come On (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 5-11. Software Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 5-12. Fusing Unit Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 5-13. The Fan Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 5-14. Scanner Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 5-15. Laser Light Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-16. Communication Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-17. EEPROM Write Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-18. Engine Initialize Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-19. C1000 or C1001 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-20. C1002 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Table 5-21. C1003 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Table 5-22. C1130 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Table 5-23. C1170 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Table 5-24. C1180 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Table 5-25. C1300 or C1310 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Table 5-26. C1320 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Table 5-27. C1990 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Table 5-28. Print Quality Anomaly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
EPL-5500 Service Manual
Troubleshooting
5.1 OVERVIEW
The EPL-5500 has a sophisticated, built-in, self-diagnostic function that reduces the troubleshooting
time by identifying failed parts or components. This self-diagnostic test identifies the troubleshooting
problems for page printers, in which even a trivial failure can result in a serious print quality
problem.
5.2 SELF-DIAGNOSTIC FUNCTION
This section describes the self-diagnostic function in which the controller automatically checks the
operating conditions of each component. If any abnormality is detected, the printer prints an error
message on the status sheet or displays a message with the LED lights.
5.2.1 SOFT ERROR
When the printer detects an error relating to a software operation, the printer indicates it as "SOFT
ERROR" by slowly flashing the red LED light. By pressing the button on the control panel, the
printer prints the status sheet with error information. Table 5-1 lists the soft error codes.
Table 5-1. SOFT ERROR Code List
Error Code
Error Condition
C0001
CPU error (reserved)
C0002
CPU error (programming command error)
C0003
CPU error (illegal instruction)
C0004
CPU error (unsupported FPU instruction)
C0007
CPU error (address misalignment)
C0009
CPU error (reserved)
C0010
CPU error (tag overflow)
C0017 to 31 CPU error (unsupported interrupt)
C0036
CPU error (unsupported coprocessor instruction)
C0128 to 254 CPU error (unimplemented instruction)
C0255
CPU error (break error)
Axxxx
Software error
Bxxxx
Software error
Dxxxx
Software error
Fxxxx to Zxxxx Software error
Rev. B
5-1
Troubleshooting
EPL-5500 Service Manual
5.2.2 Service Call Error
If the printer detects a fatal error that unrecoverable by the user, the printer indicates it with the LED
lights as "Service Call Error". There are two types of "Service Call Error" as explained below, and
each error is indicated by the LED lights of the control panel in different manner.
Service Call A Errors
Indication:
First, yellow and red LED lights go on and off twice alternately. Then, both
yellow and red LED lights go on and off a number of times correspondning
to the error number in the table 5-2.
Example:
"Fan motor error" (error number = 2)
Order
LED
(Yellow)
LED
(Red)
1
ON
OFF
Short
2
OFF
ON
Short
3
ON
OFF
Short
4
OFF
ON
Short
5
OFF
OFF
Long
6
ON
ON
Short
7
OFF
OFF
Short
8
ON
ON
Short
9
OFF
OFF
Long
Interval
State
Service call
error indication
Error code =
"2" (LED on for
2 times)
Table 5-2. Service Call A Error
Error No.
Error Code
Error Condition
1
E0003
Fusing unit error
2
E0005
Fan motor error
3
E0006
Scanner mirror motor error
4
E0009
Laser light error
5
E0014
Communication error for engine controller and video controller
6
C1200
EEPROM write error
7
C1400
Engine initialize error
Service call B error
Indication:
First, yellow and red LED lights go on and off three times alternately to
indicate that the printer start to display "Service Call B Error". The error
number of "Service Call B Error" consists of 4 digits number, and each LED
light indicates corresponding number from 4th digit to 1st digit in the
following order:
Yellow LED:
Red LED:
Yellow LED:
Red LED:
5-2
4th digit (X---)
3rd digit(-X--)
2nd digit
(--X-)
1st digit
(---X)
Rev. B
EPL-5500 Service Manual
Troubleshooting
Note that if any digit of corresponding error number is "0", both yellow and
red LED lights go on and off once at the same time.
Rev. B
5-3
Troubleshooting
Example:
EPL-5500 Service Manual
"Standard ROM error" (error number = 1130)
Order
LED
(Yellow)
LED
(Red)
1
ON
OFF
Short
2
OFF
ON
Short
3
ON
OFF
Short
4
OFF
ON
Short
5
ON
OFF
Short
6
OFF
ON
Short
7
OFF
OFF
Long
8
ON
OFF
Short
9
OFF
OFF
Long
10
OFF
ON
Short
11
OFF
OFF
Long
12
ON
OFF
Short
13
OFF
OFF
Short
14
ON
OFF
Short
15
OFF
OFF
Short
16
ON
OFF
Short
17
OFF
OFF
Long
18
ON
ON
Short
19
OFF
OFF
Long
Interval
State
Service Call Error B indication
4th digit = "1"
Error code =
"1130"
3rd digit = "1"
2nd digit = "3"
1st digit = "0"
Table 5-3. Service Call B Error
5-4
Rev. B
EPL-5500 Service Manual
Troubleshooting
Error No.
Error Code
Error Condition
4
3
2
1
1
0
0
0
C1000
RAM Validation error
1
0
0
1
C1001
System RAM check error
1
0
0
2
C1002
Standard RAM error
1
0
0
3
C1003
Optional RAM (SIMM) error
1
1
3
0
C1130
Standard ROM error
1
1
7
0
C1170
Optional NLSP fonts ROM error
1
1
8
0
C1180
Optional ROM SIMM error
1
3
0
0
C1300
Optional Type-B I/F error
1
3
1
0
C1310
Unsupported Type-B I/F installed
1
3
2
0
C1320
LocalTalk I/F error
1
9
9
0
C1999
Other hardware error
Rev. B
5-5
Troubleshooting
EPL-5500 Service Manual
5.3 TROUBLESHOOTING
This section describes troubleshooting abnormal operations and print quality problems.
5.3.1 Troubleshooting of Abnormal Operation
This section describes how to detect malfunctions, and determine the cause, and it suggests what
actions to take for various types of malfunctions. Each paragraph refers you to a detailed
troubleshooting table.
Table 5-4. Symptoms and Reference Tables
Printer Condition
Reference
Table
The heater lamp in fusing unit does not come on,
and so neither LED light is on.
5-5
Yellow and LED lights do not comeThe heater lamp in the fusing unit comes on, but
on
the LED lights are not on.
5-6
LED light is on
The LED light goes on after power on.
5-7
The LED light goes on when printing starts.
5-8
The LED light is on when printing starts from the
lower paper cassette.
5-9
Paper jam.
5-10
Software error
The printer indicates a software error on the status
sheet.
5-11
Fusing unit error
A fusing unit error is displayed.
5-12
Fan motor error
A fan motor error is displayed.
5-13
Scanner motor error
A scanner motor error is displayed.
5-14
Laser light error
A laser light error is displayed
5-15
Communication error for engine
A communication error is displayed.
5-16
EEPROM write error
An EEPROM write error is displayed.
5-17
Engine initialize error
An engine initialize error is displayed.
5-18
Error code C1000 or C1001
A C1000 or C1001 is displayed.
5-19
Error code C1002
A C1002 is displayed.
5-20
Error code C1003
A C1003 is displayed.
5-21
Error code C1130
A C1130 is displayed.
5-22
Error code C1170
A C1170 is displayed.
5-23
Error code C1180
A C1180 is displayed.
5-24
Error code C1300 or C1310
A C1300 or C1310 is displayed.
5-25
Error code C1320
A C1320 is displayed.
5-26
Error code C1990
A C1990 is displayed.
5-27
Symptom
The printer does not operate at all
5-6
Rev. B
EPL-5500 Service Manual
Troubleshooting
Table 5-5. The Printer Does Not Operate at All
Cause
Step
Checkpoint
Finding
Solution
Connector CN207 on the
C169 MAIN-B Board may be
disconnected.
1
Is connector CN207 on the
C169
MAIN-B
Board
disconnected?
Yes
Connect CN207 on
the board.
The fuse on the PWB-E board
may be blown.
2
Has the fuse blown on the
PWB-E board?
Yes
3
With power on, is there an
output of +5 VDC between pin 4
(+) and pin 3 (–) for CN207 on
C169 MAIN-B Board?
PWB-E board may be dead.
C169 MAIN-B Board may be
dead.
4
—
No
—
Replace the fuse.
Replace the PWB-E
board.
Replace the C169
MAIN-B Board.
Table 5-6. Both LED Lights Do Not Come On
Cause
Step
Checkpoint
Finding
Solution
The C169 MAIN-B Board may
be dead.
1
If you change the C169 MAIN-B
Board, do the LEDs come on?
Yes
Replace the C169
MAIN-B Board.
Table 5-7. The LED Does Not Come On (1)
Rev. B
5-7
Troubleshooting
EPL-5500 Service Manual
Cause
Step
Checkpoint
Finding
Solution
The interlock switch lever is
bad.
1
Does the switch turn on when
the case is closed?
No
Replace the interlock
lever.
The interlock switch may be
dead.
2
Does the switch toggle?
(Check with a multimeter.)
No
Replace the interlock
switch.
3
With power on, is there an
output of +24 VDC between
pin 1 (+) and pin 2 (–) for
CN207 on C169 MAIN-B
board?
No
The paper take-up sensor flag
position may be incorrect.
4
Is the paper take-up sensor
flag position OK?
No
Reposition the paper
take-up sensor flag.
The paper exit sensor flag
position may be incorrect.
5
Is the paper exit sensor flag
position OK?
No
Reposition the paper
exit sensor flag.
The paper take-up sensor
connector
may
be
disconnected.
6
Is the paper take-up sensor
connector disconnected?
Yes
The
paper
connector
disconnected.
7
Is the paper exit sensor
connector disconnected?
Yes
The PWB-E board may be
dead.
exit
may
sensor
be
The paper exit sensor may be
dead.
8
The paper take-up sensor may
be dead.
9
5-8
—
—
Replace the PWB-E
board.
Connect it.
Connect it.
—
—
Replace it.
Replace it.
Rev. B
EPL-5500 Service Manual
Troubleshooting
Table 5-8. The LED Does Not Come On (2)
Cause
Step
Checkpoint
Disconnect connector CN203
on the C169 MAIN-B Board
and check the coil resistance
between pin 5 and pin 6 on
the dis- connected cable side
of the connector, using a
multimeter.
Is
the
resistance
approximately 80 ohms?
The paper take-up solenoid
coil may be open or shorted.
1
If the coil is shorted, check the
solenoid drive circuit using the
procedure below:
1. Set the multimeter for
voltage.
2. Place the (–) terminal of
the multimeter on pin 5
of connector CN207 on
the C169 MAIN-B Board.
3. Place the (+) terminal of
the multimeter on pin 6
(GND).
With power on, does the
multimeter detect any current?
Finding
Solution
Replace the paper
take-up solenoid.
No
Replace the paper
take-up solenoid and
the C169 MAIN-B
Board.
Yes
Continued on next page
Rev. B
5-9
Troubleshooting
EPL-5500 Service Manual
Table 5-8. The LED Does Not Come On (2) (Continued)
Cause
Step
Disconnect connector CN206
on the C169 MAIN-B Board,
and check the coil resistance
between: pin 1 and pin 2; pin 3
and pin 4 (2 points total) on the
disconnected cable side of the
connector, using a multimeter.
Pin 1 — Pin 2
Pin 3 — Pin 4
Are the resistances of all four
points approximately 10 ohms?
The main motor coil may be
open or shorted.
2
Paper take-up sensor flag
position may be incorrect.
3
Paper take-up roller may be
bad.
4
5-10
Checkpoint
Finding
Solution
Replace
motor.
the
main
No
Replace the C169
MAIN-B Board.
If any coil is shorted, check the
main motor drive circuit using
the following procedure:
1. Set the multimeter to
voltage.
2. Place the (–) terminal of
the multimeter on pins 1,
2, 3, or 6 of connector
CN206 on the C169
MAIN-B board.
3. Place the (+) terminal on
pin 2 of connector CN207
of the C169 MAIN-B Board
(GND).
With power on, does the
multimeter detect current?
Yes
Is paper take-up sensor flag
position incorrect?
Yes
Reseat the paper
take-up sensor flag.
—
Replace the paper
take-up roller.
—
Rev. B
EPL-5500 Service Manual
Troubleshooting
Table 5-9. The LED Does Not Come On (3)
Cause
The
standard
problems.
Step
tray
has
1
2
Rev. B
Is the standard tray OK?
Disconnect
junction
connector near the solenoid
and check the coil resistance
between
pin 1 and pin 2 on the
disconnected solenoid side of
the connector, using a
multimeter. Is the resistance
approximately 80 ohms?
The paper take-up solenoid coil
for the lower paper cassette
may be open or shorted.
The paper take-up roller in the
lower paper cassette may be
bad.
Checkpoint
If the coil is shorted, check
the solenoid drive circuit
using
the
following
procedure:
1. Set the multimeter to
voltage.
2. Place the (–) terminal on
pin of connector CN2 on
the lower paper cassette
board.
3. Place the (+) terminal on
of ground of CN1.
With power on, does the
multimeter
detect
any
current?
Finding
No
Refer to Table 5-8.
Replace the paper
take-up solenoid.
No
Replace the paper
take-up solenoid and
circuit board of lower
paper cassette.
Yes
—
3
Solution
—
Replace the paper
take-up roller.
5-11
Troubleshooting
EPL-5500 Service Manual
Table 5-10. The LED Does Not Come On (4)
Cause
Step
The consumables may not be
installed.
1
The paper take-up roller may
be bad.
2
The paper feed roller may be
bad.
The fusing unit may be bad.
Checkpoint
Finding
Are the consumables installed?
Solution
No
Install
consumables.
the
Does paper always jam in paper
take-up roller area?
Yes
Replace the paper
take-up roller.
3
Does paper always jam in the
paper feed roller area?
Yes
Replace the paper
feed roller.
4
Does paper always jam in the
fusing unit?
Yes
Replace it.
Table 5-11. Software Errors
Cause
Step
The C169 MAIN-B Board
may be bad.
1
Checkpoint
Finding
—
—
Solution
Replace it.
Table 5-12. Fusing Unit Error
Cause
The
connector
for
thermistor
may
disconnected.
Step
the
be
1
The C169 MAIN-B Board may
be dead.
2
The heater lamp or thermal
fuse in the fusing unit may be
bad.
3
The PWB-E board may be
dead.
4
Checkpoint
Is the connector for
thermistor disconnected?
Finding
the
Solution
Connect it.
Yes
Does the heater lamp remain
lit up until the error occurs?
Does the heater lamp come
on at power on?
—
Yes
Replace the C169
MAIN-B Board.
No
Replace the heater
lamp or thermal fuse
in the fusing unit.
—
Replace the PWB-E
board.
Solution
Table 5-13. The Fan Motor Error
Cause
Step
Checkpoint
Finding
Connector CN211 on the
C169 MAIN-B Board may be
disconnected.
1
Is connector CN211 on the
C169
MAIN-B
Board
disconnected?
Yes
The fan motor may be dead.
2
—
Connect it.
—
Replace it.
Table 5-14. The Scanner Motor Error
5-12
Rev. B
EPL-5500 Service Manual
Cause
The optical unit may be bad.
The C169 MAIN-B Board may
be bad.
Rev. B
Troubleshooting
Step
1
2
Checkpoint
—
—
Finding
Solution
—
Replace the optical
unit.
—
Replace the C169
MAIN-B Board.
5-13
Troubleshooting
EPL-5500 Service Manual
Table 5-15. Laser Light Error
Cause
Step
The optical unit may be
dead.
1
The C169 MAIN-B Board
may be dead.
2
Checkpoint
Finding
Solution
—
Replace the optical
unit.
—
Replace the C169
MAIN-B Board.
Finding
Solution
—
Replace the C169
MAIN-B Board.
Finding
Solution
—
—
Table 5-16. Communication Error
Cause
Step
The C169 MAIN-B Board
may be bad.
1
Checkpoint
—
Table 5-17. EEPROM Write Error
Cause
Step
The EEPROM is may be bad.
The C169 MAIN-B Board
may be bad.
Checkpoint
—
1
—
Replace
EEPROM.
—
Replace the C169
MAIN-B Board.
Finding
Solution
—
Replace the C169
MAIN-B Board.
—
2
the
Table 5-18. Engine Initialize Error
Cause
Step
The C169 MAIN-B Board
may be bad.
1
Checkpoint
—
Table 5-19. C1000 or C1001 Error
Cause
Step
Checkpoint
Finding
The optional SIMM may be
bad.
1
Is operation OK after you
remove the optional SIMM?
Yes
The C169 MAIN-B Board
may be bad.
2
—
Solution
Replace the SIMM.
Replace the
MAIN-B Board.
—
C169
Table 5-20. C1002 Error
Cause
Step
The C169 MAIN-B Board
may be bad.
1
5-14
Checkpoint
—
Finding
Solution
—
Replace the C169
MAIN-B Board.
Rev. B
EPL-5500 Service Manual
Troubleshooting
Table 5-21. C1003 Error
Cause
Step
Checkpoint
Finding
The optional SIMM may be
bad.
1
Is the operation OK after
you remove the optional
SIMM?
Yes
The C169 MAIN-B Board
may be bad.
—
2
Solution
Replace the SIMM.
—
Replace the
MAIN-B Board.
C169
Table 5-22. C1130 Error
Cause
Step
Checkpoint
Finding
Solution
The program ROMs on the
C169 MAIN-B Board may be
bad.
1
Is operation OK after you
replace the ROM?
—
Replace the program
ROMs on the C169
MAIN-B Board.
The C169 MAIN-B Board may
be bad.
2
—
Replace
the
MAIN-B Board.
—
C169
Table 5-23. C1170 Error
Cause
Step
Checkpoint
Finding
Solution
The ROM (IC11) on the C169
MAIN-B Board may be bad.
1
Is operation OK after you
replace the ROM?
—
Replace the ROM (IC11)
on the C169 MAIN-B
Board.
—
Replace
the
MAIN-B Board.
The C169 MAIN-B Board may
be bad.
2
—
C169
Table 5-24. C1180 Error
Cause
The ROM SIMM may be bad.
The C169 MAIN-B Board may
be bad.
Step
Checkpoint
Finding
1
Is operation OK after you
replace the ROM SIMM?
—
Replace
SIMM.
the
ROM
—
Replace
the
MAIN-B Board.
C169
2
—
Solution
Table 5-25. C1300 or C1310 Error
Cause
Step
The optional interface card
(Type-B) may be bad.
1
The C169 MAIN-B Board may
be bad.
Rev. B
Checkpoint
Finding
Solution
—
Replace the optional
interface card or Type-B
EX box.
—
Replace
the
MAIN-B Board.
—
2
—
C169
5-15
Troubleshooting
EPL-5500 Service Manual
Table 5-26. C1320 Error
Cause
Step
The optional interface card
may be bad.
1
The C169 MAIN-B Board may
be bad.
2
Checkpoint
—
—
Finding
Solution
—
Replace the optional
interface card.
—
Replace
the
MAIN-B Board.
C169
Table 5-27. C1990 Error
Cause
Step
The C169 MAIN-B Board may
be bad.
1
5-16
Checkpoint
—
Finding
—
Solution
Replace
the
MAIN-B Board.
C169
Rev. B
EPL-5500 Service Manual
Troubleshooting
5.4.2 Print Quality Anomalies
This section describes how to isolate possible causes of a print quality problem .
Table 5-28. Print Quality Anomalies
Symptom
Low image density
Possible Cause
Poor development PWB-F board
Image
problem
Foggy background
Part Name
transferImage
unit
Check Item
—
Remedy
Replace
board.
the
PWB-F
the
transferCheck to see if theReplace
surface
of
imagetransfer unit.
transfer
unit
is
damaged.
image
PWB-F board
—
Replace
board.
the
Defective PC drum Photoconductor unit
—
Replace
the
photoconductor unit.
Improper
print—
density setting
—
Adjust the print density
using printer settings.
Poor development Toner cartridge —
Replace the
cartridge.
Improper charging Drum charge
Replace
board.
—
the
PWB-F
toner
PWB-F
the
Check the wiring of theReplace
PC drum charging biasphotoconductor unit.
line.
Improper
print—
density setting
Rev. B
—
Adjust the print density
in printer settings.
5-17
Troubleshooting
EPL-5500 Service Manual
Table 5-28. Print Quality Anomalies (Continued)
Symptom
Blank print
Possible Cause
Part Name
Check whether
toner
cartridge
installed properly.
Poor development Imaging
cartridge
Remedy
theReinstall
iscartridge.
the
toner
PWB-F board
—
Replace
board.
the
PWB-F
Improper charging PWB-F board
—
Replace
board.
the
PWB-F
transferCheck the surface ofReplace
the
the image transfer unit. transfer unit.
image
Poor
transfer
imageImage
unit
PWB-F board
Black print
Check Item
—
Replace
board.
Improper
print—
density setting
—
Adjust the print density
in SelecType.
Defective
unit
—
Replace the optical unit.
Improper charging Photoconductor unit
—
Replace
the
photoconductor unit.
PWB-F board
—
Replace
board.
opticalOptical unit
Poor development Toner cartridge —
PWB-F board
Replace
cartridge.
Replace
board.
the
PWB-F
the
PWB-F
the
toner
the
PWB-F
Improper
print—
density setting
—
Adjust the print density
in SelecType
Defective
unit
—
Replace the optical unit.
White/black lines andImproper charging Photoconducbands.
tor unit
—
Replace the
cartridge.
imaging
Poor development PWB-F board
—
Replace
board.
PWB-F
opticalOptical unit
Toner cartridge —
Dirt on the fusingFusing roller
roller
5-18
—
Replace
cartridge.
the
the
toner
Clean the fusing roller.
Rev. B
EPL-5500 Service Manual
Troubleshooting
Table 5-28. Print Quality Anomalies (Continued)
Symptom
Possible Cause
Part Name
Toner smudges onImproper charging PWB-F
the back side of the
sheet.
Poor development PWB-F
Check Item
Remedy
—
Replace
board.
the
PWB-F
—
Replace
board.
the
PWB-F
Improper fusing
Fusing unit
—
Replace the fusing unit.
Offset print
Improper fusing
Fusing unit
—
Replace the fusing unit.
White spots
Poor
transfer
imageImage
unit
PWB-F
Rev. B
transfer—
—
Replace
the
transfer unit.
Replace
board.
the
5-19
image
PWB-F
Chapter 6
Maintenance
Table of Contents
6.1 MAINTENANCE
6.1.1 User Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.1.1 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.1.2 Replacement of Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2 Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2.1 Periodic Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1
6-1
6-1
6-2
6-2
6-2
6-2
List of Figures
Figure 6-1. Position of the Special Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Figure 6-2. Cleaning the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
List of Tables
Table 6-1. Periodic Service Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Table 6-2. Cleaning Parts and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-ii
Rev. A
EPL-5500 Service Manual
Maintenance
6.1 MAINTENANCE
The EPL-5500 is a page printer that uses an electrophotographic printing method. Unlike most
impact or ink-jet printers, the key components in the electrophotographic process are integrated into
two expendable units (the photoconductor unit and toner cartridge).
Therefore, periodic
replacement of them is essential to ensure high-quality output. Other maintenance items are also
described in this chapter, which is divided into two sections: user maintenance (preventive
maintenance) and service maintenance (repair).
6.1.1 User Maintenance
Users can achieve maximum print quality from the printer by following the procedures below:
6.1.1.1 Cleaning
This section describes the cleaning required for optimal print quality.
❒
External Cleaning
Be sure to disconnect the printer from the power outlet before cleaning it. Wipe the cover and
external parts of the printer with a damp cloth that has been soaked in a neutral cleaning solution.
❒
Internal Cleaning
Be sure the printer has been disconnected from the power supply and that the fusing unit has
cooled down. If the electrode comb of the image transfer unit is dirty, clean it with a special tool,
using the following steps:
Figure 6-1. Position of the Special Tool
1.
Pick up the electrode comb cleaner from the upper unit.
2.
Wipe the electrode comb surface from end to end with the electrode comb cleaner several
times.
Electrode Comb Cleaner
Cleaner section
Pre-image Transfer Roller
Image Transfer Rear
Guide
Figure 6-2. Cleaning the Electrode Comb
Rev. B
6-1
Maintenance
EPL-5500 Service Manual
6.1.1.2 Replacement of Consumables
This printer uses a consumable photoconductor unit and toner cartridge. The life of photoconductor
unit is 20,000 pages and the toner cartridge life is 3,000 pages, when printing on A4- or letter-size
pages with a 5% print ratio.
If printed images become faint, remove the toner cartridge and gently shake it. This will distribute
the toner and may make the images darker. If the image is still too light, replace the toner cartridge
cartridge.
If the printed image remains faint after you have replaced the toner cartridge, change the photoconductor unit.
6.1.2 Service Maintenance
This section describes the periodic service maintenance and the cleaning required.
6.1.2.1 Periodic Service Maintenance
The following units need service maintenance periodically, because they are subject to functional
deterioration as the total number of printed pages increases, resulting in bad print quality.
Table 6-1. Periodic Service Maintenance
Unit
Service Interval
Image transfer unit
Approx. 50,000 pages
Fusing unit
Approx. 50,000 pages
The service interval listed above is only a reference value. You do not need to perform service
maintenance exactly at this time.
6.1.2.2 Cleaning
Some parts of this printer require regular cleaning. Clean each part using the specified method and
tools. (Refer to Chapter 3 for disassembly procedures.)
Table 6-2. Cleaning Parts and Procedures
Parts Name
Cleaning Procedure
Paper take-up roller
Wipe the surface with a dry soft cloth.
Upper fusing roller (in fusing unit)
Dip a soft cloth in silicon oil and wipe the dust off.
Lower fusing roller (in fusing unit)
Thermistor (in fusing unit)
Paper separator and rollers (in fusing unit)
6-2
Dip a soft cloth in denatured alcohol and wipe the
dust off.
Rev. B
EPL-5500 Service Manual
Rev. B
Maintenance
6-3
Appendix A
Reference Materials
Table of Contents
A.1 CONNECTOR PIN ASSIGNMENTS
A-1
A.1.1 Main Board (C169 MAIN-B Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
A.2 CIRCUIT DIAGRAM
A-11
A.3 CIRCUIT BOARD COMPONENT LAYOUT
A-16
List of Figures
Figure A-1. Cable Connections for the Video Controller . . . . . . . . . . . . . . . . . . A-1
Figure A-2. Cable Connections for the Engine Controller . . . . . . . . . . . . . . . . . A-2
Figure A-3. C169 MAIN-B Circuit Diagram (1/2) . . . . . . . . . . . . . . . . . . . . . . . A-11
Figure A-4. C169 MAIN-B Circuit Diagram (2/2) . . . . . . . . . . . . . . . . . . . . . . . A-13
Figure A-5. PWB-E (120V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14
Figure A-6. PWB-E (220/240V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . A-15
Figure A-7. C169 MAIN-B Component Layout (Front) . . . . . . . . . . . . . . . . . . . A-16
Figure A-8. C169 MAIN-B Component Layout (Rear) . . . . . . . . . . . . . . . . . . . A-17
List of Tables
Table A-1. Board Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Table A-2. CN2 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Table A-3. CN4 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Table A-4. CN5 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Table A-5. CN202 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Table A-6. CN203 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Table A-7. CN204 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Table A-8. CN205 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Table A-9. CN206 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Table A-10. CN207 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Table A-11. CN208 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Table A-12. CN209 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Table A-13. CN210 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Table A-14. CN211 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
EPL-5500 Service Manual
Appendix
A.1 CONNECTOR PIN ASSIGNMENTS
Figures A-1 and A-2 illustrate the interconnection of the primary components. Table A-1 gives the
size and a description of each connector.
C169 MAIN-B Boad
Video Controller Section
CN1
Parallel I/F
CN2
RAM SIMM
CN4
LocalTalk/Serial I/F
module or Type-B EX
ROM SIMM
CN5
Figure A-1. Connections for the Video Controller
Rev. A
A-1
Appendix
EPL-5500 Service Manual
Main motor
CN206
1
2
3
4
M1
Po lyg on mot or C N 1 M
1
2
M2
ϕA
ϕA
ϕB
ϕB
C169 MAIN-B
Board
CN2 10
5
4
3
2
1
3
4
Fan mot or
POLYGON CTL
DC 5V
GND
D C2 4V
N . C.
CN211
1 FA N
2 D C2 4V
M3
Paper Exit sen sor
C N3 S
3
CN2 08
1 A N OD E (PC 1 )
2
1
2 GND
3 PC3
PC3
Paper Take-up sensor
C N1 S
3
2
1
CN2 03
1 ANODE (PC1)
2 GND
3 PC1
PC1
4 N . C.
5 D C24V
6 F EE D 1
Paper Take-up
solenoid
CN205
CN2 S
1 2
2 1
SL 1
Fusing roller
Thermistor
P WB -F
Image
transfer
housing
Image
transfer
charger
High
voltage
unit
7
6
5
4
3
2
S SCAN 1
CN204
8
7
6
5
4
3
2
1
CN 1 D
1
P WB -D
2
3 Laser diode
drive board
4
5
6
7
CN202
1 T HER MOST OR
2 DC5 V
TH1
CN1F
8
7
6
5
4
3
2
1
D C 5V
L DATA
GND
L D APC 1 (L DV R1 )
LD APC1 (LDVR2)
CO
1
2
3
4
5
6
7
8
P WB -S
1
2
3
4
5
6
7
8
HV C
HV T
HV SEL1
HV SEL2
HV B
BIAS MON
GN D
D C2 4V
C N1 A CN2 09
Paper Take-up
solenoid
P WB -A
SL2
1 D C24V
2 FE ED 2
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
8
D C2 4V
F EE D 2
N.C.
DC5 V
GND
P E MP 2
PSIZE0
2 N D BI N
mm/inc h
UNIVERSAL
C H EC K1
CH ECK 2
CN2 07
D C2 4V
GN D
GN D
D C5 V
1
2
3
4
FUSE R LA MP 5
C N 1E
1
2
3
4
5
Fusing roller
heater lamp
C N3 E
H EAT N 1
N.C. 2
HEA T L 3
H1
TF 1
P W B -E
Pow er
unit
Fusing roller thermal fuse
Inter lock
switc h
Inlet
board
Power S W
Inlet
2nd paper feeding
unit (option)
Figure A-2. Cable Connections for the Engine Controller
A-2
Rev. A
EPL-5500 Service Manual
Appendix
Table A-1. Board Connector Summary
Connector
Description
Pins
Reference
Main Board (C169 MAIN-B Board)
CN1
Centronics parallel interface
36 pins
Table 1-8
CN2
Connector for RAM SIMM
72 pins
Table A-2
CN3
(Not used)
20 pins
—
CN4
Connector for LocalTalk/Serial I/F Module or Type-B EX
60 pins
Table A-3
CN5
Connector for ROM SIMM
72 pins
Table A-4
CN6
(Not used)
80 pins
—
CN7
(Not used)
40 pins
—
CN202
Connector for thermistor
2 pins
Table A-5
CN203
Connector for paper take-up solenoid and paper take-up sensor 6 pins
Table A-6
CN204
Connector for high-voltage supply board (PWB-S and PWB-F
8 pins
board)
Table A-7
CN205
Connector for optical unit
7 pins
Table A-8
CN206
Connector for motor
4 pins
Table A-9
CN207
Connector for power supply board (PWB-E board)
5 pins
Table A-10
CN208
Connector for paper exit sensor
3 pins
Table A-11
CN209
Connector for lower paper cassette
12 pins
Table A-12
CN210
Connector for optical unit
5 pins
Table A-13
CN211
Connector for fan
2 pins
Table A-14
Power Supply Board (PWB-E Board)
CN1
Connector for AC power inlet
4 pins
—
CN2
Connector for main board
5 pin
Table A-11
CN3
Connector for heater lamp
3 pins
—
High-Voltage Supply Board (PWB-F Board)
CN1
Connector for main board
8 pins
Table A-7
CN2
Connector for paper take-up sensor
3 pins
—
Rev. A
A-3
Appendix
EPL-5500 Service Manual
A.1.1 Main Board (C169 MAIN-B Board)
Table A-2. CN2 Pin Assignments
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
A-4
Signal Name
Vss
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
NC
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA10
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
MA7
NC
Vcc
MA8
MA9
RAS3
RAS2
MP2
MP0
MP1
MP3
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
WE
NC
DQ8
I/O
—
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
—
O
O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
—
—
O
O
O
O
—
—
—
—
—
O
O
O
O
O
O
—
O
—
I/O
Description
Ground
Data bus bit 0
Data bus bit 16
Data bus bit 1
Data bus bit 17
Data bus bit 2
Data bus bit 18
Data bus bit 3
Data bus bit 19
+5 VDC
Not connected
Memory address bit 0
Memory address bit 1
Memory address bit 2
Memory address bit 3
Memory address bit 4
Memory address bit 5
Memory address bit 6
Memory address bit 10
Data bus bit 4
Data bus bit 20
Data bus bit 5
Data bus bit 21
Data bus bit 6
Data bus bit 22
Data bus bit 7
Data bus bit 23
Memory address bit 7
Not connected
+5 VDC
Memory address bit 8
Memory address bit 9
RAS 3
RAS 2
Not used
Not used
Not used
Not used
Ground
CAS 0
CAS 2
CAS 3
CAS 1
RAS 0
RAS 1
Not connected
Write enable
Not connected
Data bus bit 8
Rev. A
EPL-5500 Service Manual
Appendix
Table A-2. CN2 Pin Assignments (Continued)
Pin No.
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Signal Name
DQ24
DQ9
DQ25
DQ10
DQ26
DQ11
DQ27
DQ12
DQ28
Vcc
DQ29
DQ13
DQ30
DQ14
DQ31
DQ14
NC
PO1
PO2
PO3
PO4
NC
Vss
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
I/O
I/O
I/O
I/O
I/O
I/O
—
—
—
—
—
—
—
Description
Data bus bit 24
Data bus bit 9
Data bus bit 25
Data bus bit 10
Data bus bit 26
Data bus bit 11
Data bus bit 27
Data bus bit 12
Data bus bit 28
+5 VDC
Data bus bit 29
Data bus bit 13
Data bus bit 30
Data bus bit 14
Data bus bit 31
Data bus bit 14
Not connected
Not used
Not used
Not used
Not used
Not connected
Ground
Table A-3. CN4 Pin Assignments
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Rev. A
Signal Name
PCLK
RST
GND
GND
GND
GND
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
AB0
AB1
AB2
AB3
AB4
CS
I/O
O
O
—
—
—
—
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
Description
Clock
Reset signal
Ground
Ground
Ground
Ground
Data bus bit 0
Data bus bit 1
Data bus bit 2
Data bus bit 3
Data bus bit 4
Data bus bit 5
Data bus bit 6
Data bus bit 7
Address bus bit 0
Address bus bit 1
Address bus bit 2
Address bus bit 3
Address bus bit 4
Select signal
A-5
Appendix
EPL-5500 Service Manual
Table A-3. CN4 Pin Assignments (Continued)
Pin No.
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
A-6
Signal Name
RD
WR
IREQ
NMI
DREQ
DTCT
VCC
VCC
VCC
VCC
TXD+
TXDRXD+
RXDDTR
CTS
NC
NC
LCD
SWRD
GND
GND
GND
GND
RESET
INH
CMREQ
WRRDY
RDREQ
WRT
RDT
TYPB
TXD
READY
RXD
NC
VCC
VCC
VCC
VCC
I/O
O
O
O
O
O
I
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
O
O
I
I
I
O
O
I
—
—
—
—
—
—
—
—
Description
Read strobe signal
Write strobe signal
Interrupt to option
Non-maskable interrupt
Data request
LT option used/unused
+5 VDC
+5 VDC
+5 VDC
+5 VDC
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Ground
Ground
Ground
Ground
Reset signal
I/F disabled
Request command
I/F ready
Data read request
Write enable
Read enable
Type-B I/F used/unused
Not used
Not used
Not used
Not connected
+5 VDC
+5 VDC
+5 VDC
+5 VDC
Rev. A
EPL-5500 Service Manual
Appendix
Table A-4. CN5 Pin Assignments
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Rev. A
Signal Name
Vss
D0
D16
D1
D17
D2
D18
D3
D19
Vcc
RD
A0
A1
A2
A3
A4
A5
A6
A10
D4
D20
D5
D21
D6
D22
D7
D23
A7
A19
Vcc
A8
A9
A20
EEP
RESET
A21
A22
A23
Vss
A11
A13
A14
A12
CS0
CS1
A18
WR
A17
D8
I/O
—
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
O
O
O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
—
O
O
O
O
O
O
O
O
—
O
O
O
O
O
O
O
O
O
I/O
Description
Ground
Data bus bit 0
Data bus bit 16
Data bus bit 1
Data bus bit 17
Data bus bit 2
Data bus bit 18
Data bus bit 3
Data bus bit 19
+5 VDC
Read strobe
Address bit 0
Address bit 1
Address bit 2
Address bit 3
Address bit 4
Address bit 5
Address bit 6
Address bit 10
Data bus bit 4
Data bus bit 20
Data bus bit 5
Data bus bit 21
Data bus bit 6
Data bus bit 22
Data bus bit 7
Data bus bit 23
Address bit 7
Address bit 19
+5 VDC
Address bit 8
Address bit 9
Address bit 20
Chip select
Reset signal
Address bit 21
Address bit 22
Address bit 23
Ground
Address bit 11
Address bit 13
Address bit 14
Address bit 12
Chip select
Chip select
Address bit 18
Write enable
Address bit 17
Data bus bit 8
A-7
Appendix
EPL-5500 Service Manual
Table A-4. CN5 Pin Assignments (Continued)
Pin No.
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Signal Name
D24
D9
D25
D10
D26
D11
D27
D12
D28
Vcc
D29
D13
D30
D14
D31
D14
A16
R/B
NC
NC
NC
A15
Vss
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
I/O
I/O
I/O
I/O
I/O
I/O
O
—
—
—
—
O
—
Description
Data bus bit 24
Data bus bit 9
Data bus bit 25
Data bus bit 10
Data bus bit 26
Data bus bit 11
Data bus bit 27
Data bus bit 12
Data bus bit 28
+5 VDC
Data bus bit 29
Data bus bit 13
Data bus bit 30
Data bus bit 14
Data bus bit 31
Data bus bit 14
Address bit 7
Not used
Not connected
Not connected
Not connected
Address bit 15
Ground
Table A-5. CN202 Pin Assignments
Pin No. Signal Name
+5
1
TH
2
I/O
—
I
Description
+5 VDC
Fuser temperature
Table A-6. CN203 Pin Assignments
Pin No.
1
2
3
4
5
6
A-8
Signal Name
PS1
GND1
PS1
NC
+24V
FEED1
I/O
I
—
I
—
—
O
Description
Paper take-up sensor
Ground
Paper take-up sensor
No connected
+24 VDC
Paper take-up solenoid drive
Rev. A
EPL-5500 Service Manual
Appendix
Table A-7. CN204 Pin Assignments
Pin No.
1
2
3
4
5
6
7
8
Signal Name
HV-C
HV-T
HV-S
HV-S2
HV-B
BIAS-M
GND2
+24
I/O
—
I
—
—
O
—
—
Description
Ground
+24 VDC
Table A-8. CN205 Pin Assignments
Pin No.
1
2
3
4
5
6
7
Signal Name
SSCAN
LD-CTL
LDAPC2
LDAPC1
GND1
LDATA
+5V
I/O
I
I
O
O
—
O
—
Description
Horizontal synchronous signal
Laser power signal
Laser power adjust 2
Laser power adjust 1
Ground
Laser data
+5 VDC
Table A-9. CN206 Pin Assignments
Pin No.
1
2
3
4
Signal Name
A
A
B
B
I/O
O
O
O
O
Description
Motor phase A
Motor phase A
Motor phase B
Motor phase B
Table A-10. CN207 Pin Assignments
Pin No.
1
2
3
4
5
Signal Name
+24V
GND2
GND1
+5V
FUSER
I/O
—
—
—
—
O
Description
+24 VDC
Ground
Ground
+5 VDC
Heater lamp on
Table A-11. CN208 Pin Assignments
Pin No. Signal Name
PS3
1
GND
2
PS3
3
Rev. A
I/O
I
—
I
Description
Paper exit sensor (+5V)
Ground
Paper exit sensor (SGL)
A-9
Appendix
EPL-5500 Service Manual
Table A-12. CN209 Pin Assignments
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Signal Name
+24 V
FEED2
NC
+5V
GND1
PE2
PSIZ0
PSIZ1
PSIZE2
CHECK1
CHECK2
CHECK3
I/O
—
O
—
—
—
I
Description
+24 VDC
Lower cassette solenoid on
No connected
+5 VDC
Ground
Lower cassette paper empty
Table A-13. CN210 Pin Assignments
Pin No.
1
2
3
4
5
Signal Name
NC
+24V
GND2
+5V
P-CTL
I/O
—
—
—
—
O
Description
Not connected
+24 VDC
Ground
+5 VDC
Polygon motor control
Table A-14. CN211 Pin Assignments
Pin No. Signal Name
+24V
1
FAN
2
A-10
I/O
—
O
Description
+24 VDC
Fan control
Rev. A
EPL-5500 Service Manual
Appendix
A.2 CIRCUIT DIAGRAMS
A24 R30
A25 R69
A26 R70
A21 R108
10K
10K
10K
10K
IRL[0..3]
AD[0..7]
IC1
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
C2
0.1U
C3
0.1U
C4
0.1U
C47
0.1U
C48
0.1U
153
150
145
138
136
131
119
114
110
105
97
86
79
77
75
67
56
51
48
39
36
33
27
21
7
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
85
84
83
82
81
80
78
73
72
71
70
69
65
64
62
61
59
58
55
54
53
50
47
46
45
44
43
41
40
35
34
31
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
155
156
157
158
159
160
1
2
3
4
5
8
9
10
11
13
14
16
17
19
22
24
25
26
29
30
137
140
143
133
108
142
152
113
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120
R121
R122
R123
R124
R125
R126
R127
R128
R129
R130
R131
R132
R133
R134
R135
R136
R31
10K
N.C.
N.C.
N.C.
N.C.
N.C.
BMODE8
BMODE16
TMS
TRST
TCK
TDI
TDO
CLK_ECB
146
147
148
149
IRL0
IRL1
IRL2
IRL3
AS
RD/WR
READY
SAMEPG
TMR_OV
LOCK
ERROR
MEXC
BREQ
BGRNT
91
92
89
99
120
93
96
88
90
94
XTAL1
XTAL2
CLKOUT1
CLKOUT2
RESET
115
112
116
117
134
PJ
PJ
J30
PJ
68
74F74
10K
8
7
6
5
RM12
1
2
3
4
8
7
6
5
10K
RM11
1
2
3
4
68
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
2
3
4
5
6
7
8
9
12
13
14
15
16
17
18
19
22
23
24
25
26
27
28
29
32
33
34
35
36
37
38
39
IC2
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
88
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
89
A26 90
91
92
A28
A29
A30
A31
R110
68
R137 68 CSX0
R138 68 CSX1
R139 68 CSX2
R140 68 CSX3
CSX4
CSX5
R35
IRL0
IRL1
IRL2
IRL3
10K
100
102
103
104
106
107
CS0
CS1
CS2
CS3
CS4
CS5
J28
J29
R28
R71
68
126
127
128
129
CP
1
121
123
124
125
BE0
BE1
BE2
BE3
4
D S Q5
IC8A
6
RQ
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
68
2
3
R109
ASI0
ASI1
ASI2
ASI3
42
57
60
122
141
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
10K
R34
R143 68
R144 68
R38 J32
68
68
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
97
98
99
102
103
104
105
106
IOALE
IOR/W
IORDY
IOREQA
IOREQB
IOREQC
IOREQD
EOP
DMAIREQ
126
125
86
82
83
84
85
96
119
VDCSA
VDREQA
VDREQB
VDDMA
VDDMB
VDNULL
VDEOL
140
43
44
141
142
143
144
CAS0
CAS1
CAS2
CAS3
110
111
112
113
RAS0
RAS1
RAS2
RAS3
RAS4
154
155
156
157
158
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
R26
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10
10K
BE0
BE1
BE2
BE3
93
94
116
75
95
AS
RD/WR
READY
TMR_OV
LOCK
118
45
BREQ
BGRNT
46
47
MCLK
RESET
87
117
78
EXBREQ
EXBGRNT
RDYIN
123
124
115
RD
WR
EEP
76
77
TEST0
TEST1
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
C5
0.1U
160
159
146
133
122
121
109
107
101
80
79
42
41
31
21
11
1
2
3
4
RM13
8
7
6
5
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
ASI0 910
ASI1 11
ASI2 12
ASI3
13
CS0 14
CS1 15
CS2 16
CS3 17
CS4 18
CS5
IRL0
IRL1
IRL2
IRL3
29
30
31
32
C
S
X
[
0
.
.
5
]
CSX0
CSX1
CSX2
CSX3
CSX4
CSX5
IRL0
IRL1
IRL2
IRL3
AS 19
RD/WR 20
READY 27
SAMEPG 21
TMR_OV 22
LOCK 23
ERROR 24
28
MEXC 25
BREQ
BGRNT 26
XTAL1 34
CLKOUT1 35
CLKOUT2 36
RESET 33
+5V 1
+5V 237
GND
GND 38
GND 39
GND 40
CPU_BUS
KX15-40K2D
DR0
R75
68
D0
DR1
R76
68
D1
DR2
R77
68
D2
DR3
R78
68
D3
DR4
R79
68
D4
DR5
R80
68
D5
DR6
R81
68
D6
DR7
R82
68
D7
DR8
R83
DR9
68
D8
R84
68
D9
DR10 R85
68
D10
DR11 R86
68
D11
DR12 R87
68
D12
DR13 R88
68
D13
DR14 R89
68
D14
DR15 R90
68
D15
DR16 R91
68
D16
DR17 R92
68
D17
DR18 R93
68
D18
DR19 R94
68
D19
DR20 R95
68
D20
DR21 R96
68
D21
DR22 R97
68
D22
DR23 R98
68
D23
DR24 R99
68
D24
DR25 R100 68
D25
DR26 R101 68
D26
DR27 R102 68
D27
DR28 R103 68
D28
DR29 R104 68
D29
DR30 R105 68
D30
DR31 R106 68
D31
MA0
MA1
MA2
MA3
8
7
6
5
27
RM4
1
2
3
4
MA4
MA5
MA6
MA7
14
16
18
20
23
25
27
29
15
17
19
21
24
26
28
30
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
3
74AS08
2
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
8
74AS08
J25
J/3
IC23D
12
22
CE
GND 12
OE
W/B/V GND 31
EPROM8M*16
IC23C
9
10
31
MA8
MA9
MA10
6
5
R145
68
27
27
27
22
IC23B
4
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10
11
13
74AS08
C43
0.1U
IC23
+5 14
GND7
VCC_GND
1
3
R73
10K
J2
2
J/3
A26
A27
Local Language
IC12
A0
O0
A1
O1
A2
O2
A3
O3
A4
O4
A5
O5
A6
O6
A7
O7
A8
O8
A9
O9
A10
O10
A11
O11
A12
O12
A13
O13
A14
O14
A15
O15
A16
A17
VDD
A18
N.C.
10
9
8
7
6
5
4
3
41
40
39
38
37
36
35
34
33
2
1
42
11
13
32
PJ
CSX0
3
4
5
6
7
8
RM3
1
2
3
4
R18
R20
R21
R19
1
IC23A
74AS08
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
CN6
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
CSX0
CSX1
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
22
24
MB86933H
CN7
A26
A27
A28
A29
A30
A31
8
7
6
5
27
C17
0.1U
39
40
CSI0
CSI1
41
42
CSO0
CSO1
43
44
RD
WR
45
47
46
48
BWE0
BWE1
BWE2
BWE3
73
74
RD/BY
RESET
75
76
VPP
VPP
1
2
3
4
VCC
VCC
VCC
VCC
37
38
77
78
79
80
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
22
24
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
22
24
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
22
24
IC13
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
D0
D1
D2
D3
D4
D5
D6
D7
13
14
15
17
18
19
20
21
C51
0.1U
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
C9
0.1U
C7
0.1U
CE
OE
GND 16
EPROM 4M*8/DIP
IC14
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
D0
D1
D2
D3
D4
D5
D6
D7
13
14
15
17
18
19
20
21
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
VPP 1
VDD 32
C8
D0
D1
D2
D3
D4
D5
D6
D7
13
14
15
17
18
19
20
21
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
2
3
4
5
7
8
9
10
31
32
33
34
36
37
38
39
11
12
15
30
VPP 1
VDD 32
C30
0.1U
CE
GND 16
OE
EPROM 4M*8/DIP
IC16
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
2
3
4
5
7
8
9
10
31
32
33
34
36
37
38
39
11
12
15
30
0.1U
CE
GND 16
OE
EPROM 4M*8/DIP
IC15
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
2
4
6
8
20
22
24
26
49
51
53
55
57
61
63
65
3
5
7
9
21
23
25
27
50
52
54
56
58
60
62
64
CN2
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
36
37
35
38
MP0
MP1
MP2
MP3
12
13
14
15
16
17
18
28
31
32
19
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
11
29
46
48
66
71
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
40
43
41
42
CAS0
CAS1
CAS2
CAS3
44
45
34
33
RAS0
RAS1
RAS2
RAS3
47
WE
10
30
59
VPP 1
VDD 32
D0
D1
D2
D3
D4
D5
D6
D7
13
14
15
17
18
19
20
21
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
VPP 1
VDD 32
10
9
8
7
6
5
4
3
41
40
39
38
37
36
35
34
33
2
1
42
11
13
32
C31
0.1U
CE
OE
GND 16
EPROM 4M*8/DIP
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
VSS
VSS
VSS
VSS
VSS
VSS
ROM_BUS
52819-0801
10
9
8
7
6
5
4
3
41
40
39
38
37
36
35
34
33
2
1
42
11
13
32
IC17
IO1
A0 16
17
IO2
A1 18
IO3
A2
IO4
A3 19
IO5
A4 22
IO6
A5 23
24
IO7
A6 25
IO8
A7
IO9
A8 26
IO10
IO11
RAS 14
29
IO12 LCAS 28
IO13 UCAS 13
IO14
WE 27
IO15
OE
IO16
VCC1
NC
VCC620
NC
VCC
NC
NC
VSS 21
VSS 35
VSS 40
DRAM4M*16/SOJ
IC18
IO1
A0 16
IO2
A1 17
IO3
A2 18
IO4
A3 19
IO5
A4 22
IO6
A5 23
IO7
A6 24
IO8
A7 25
IO9
A8 26
IO10
IO11
RAS 14
IO12 LCAS 29
IO13 UCAS 28
IO14
WE 13
IO15
OE 27
IO16
VCC1
NC
VCC620
NC
VCC
NC
NC
VSS 21
VSS 35
VSS 40
DRAM4M*16/SOJ
IC21
A0
O0 14
A1
O1 16
A2
O2 18
20
A3
O3 23
A4
O4
A5
O5 25
A6
O6 27
A7
O7 29
A8
O8 15
A9
O9 17
A10
O10 19
A11
O11 21
A12
O12 24
A13
O13 26
A14
O14 28
A15
O15 30
A16
A17
VDD 22
A18
NC
CE
GND 31
OE
BYTE GND 12
MROM8M*16
IC22
A0
O0 14
A1
O1 16
A2
O2 18
20
A3
O3 23
A4
O4 25
A5
O5 27
A6
O6
A7
O7 29
A8
O8 15
A9
O9 17
A10
O10 19
A11
O11 21
24
A12
O12 26
A13
O13
A14
O14 28
A15
O15 30
A16
A17
VDD 22
A18
NC
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
CE
RW
READY
IRL0
IRL1
IRL2
IRL3
53
54
MCLK
RESET
41
42
43
44
PIRDY
SIRDY
TBRDY
SCRDY
49
48
47
46
45
50
OPTI0
OPTI1
OPTI2
OPTI3
OPTI4
NMI
MA1
MA2
MA3
C21
0.1U
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA4
MA5
MA6
MA7
MA8
17
18
19
20
23
24
25
26
27
28
14
31
30
13
29
1
6
21
22
37
42
MA0
C20
0.1U
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
VCC
VCC
VCC
J27 J/3
2
IC19
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
17
18
19
20
23
24
25
26
27
28
14
31
30
13
29
1
6
21
C22
0.1U
2
3
4
5
7
8
9
10
33
34
35
36
38
39
40
41
N.C.
N.C.
N.C.
N.C.
N.C.
11
12
15
16
32
22
37
42
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
R7
68
R9
68
J31
IC20
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
IO1
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
IO10
IO11
RAS IO12
LCAS IO13
UCAS IO14
IO15
WE
IO16
OE
2
3
4
5
7
8
9
10
33
34
35
36
38
39
40
41
N.C.
N.C.
N.C.
N.C.
N.C.
11
12
15
16
32
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
NFA41R00C470
R6
68
31
C18
88
80
81
82
79
87
86
85
83
84
TXD
RXD
RTS
CTS
SRXD
BCLK
76
73
75
72
74
71
EPRDY
CPRDY
PRRDY
PRINT
PRFD
ETBSY
CTBSY
SRCLK
STS
CMD
VSREQ
121
112
120
111
110
119
113
114
118
117
122
LCD
LED
SWRD
LCLK
SWINT
BZ
20
21
22
23
126
24
TYPB 108
RDT 107
WRT 106
INH 109
RDREQ 123
124
WRRDY 125
CMREQ
EXTOUT0 60
59
EXTOUT1 58
EXTOUT2
105
EXT 104
RDE
WRE 103
DB0 12
DB1 11
DB2 910
DB3 8
DB4 7
DB5 6
DB6 5
DB7
AB0
AB1
AB2
AB3
AB4
53
54
55
56
57
58
59
60
A0
A1
A2
A3
A4
A5
A6
A7
2
43 21
5678
56 78
C26
CS
DMAREQ0
DMAREQ1
DMAMOD0
DMAMOD1
DNULL
EOL
43
46
RSTOUT
RSTIN
52
79
66
47
48
88
MCLK
VCLKIN
CLK12
CLK14
CLK18
CLK16
86
87
42
49
HSOUT
VSYNC
SDIN
CLKOUT
QR
OUT
10
R13 100 9
IC7D
74LS07
8
R14 100 5
IC7C
74LS07
6
R15
100 3
IC7B
74LS07
4
100 1
IC7A
74LS07
2
C14
0.1U
1
36
14
31
STRBX
SELINX
AUTOX
INITX
10
11
12
13
32
ACKX
BUSY
PE
SELOT
ERRX
35
17
15
18
34
+5V
CG
N.C.
N.C.
N.C.
PIF
IC7F
13
12
74LS07
C10
74LS07
IC7-7
0.1U IC7-14
TP2
TP
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
19
18
17
16
15
R146
R147
R148
R149
R150
68
68
68
68
68
AB0
AB1
AB2
AB3
AB4
D
B
[
0
.
.
7
A ]
B
[
0
.
.
4
]
4
DB0 2
3
J11
PJ
J12
PJ
J13
J14
PJ
PJ
J15
PJ
J16
PJ
CP
3.3K
R61
3.3K
100P
R62
3.3K
C34
100P
R63
3.3K
C33
100P
R64
C32
100P
R65
R40
68
R41
68
R42
68
R43
68
R44
R45
68
68
3.3K
3.3K
5
13
4
11
7
10
12
8
9
6
3
14
CN3
EPRDY
CPRDY
PRRDY
PRINT
ETBSY
CTBSY
SRCLK
STS
CMD
TOD
HSYNC
VIDEO
2
1
RESET
DOTCLK
16
18
20
+5
+5
+5
15
17
19
R67
GND
GND
GND
EIF
DF11-20DP-2DSA
LED1
LED
Yellow
IC10B
D S Q9
CP
DT2
FB1L3N
R Q8
174F74
3
C41
IC10-7
R39
100P
C35
DT1
FB1L3N
330
11
100P
C36
D S Q5
1
0
DB1 12
C37
IC10A
6
RQ
74F74
1
10
20
31
41
50
64
81
91
100
0.1U IC10-14
R68
LED2
330
LED
Red
R1
10K
R66
47K
C24
1U/50V
1
2
3
4
6
7
IC11
CS VCC 8
SK
DI
DO
ORG
NC GND5
J5
PJ
J6
PJ
J7
PJ
J8
PJ
J9
J10
PJ
PJ
EPRDYX
CPRDYX
PRRDYX
PRINTX
ETBSYX
CTBSYX
SRCLKX
STSX
CMDX
TODX
HSYNCX
VIDEOX
RESETX
Engin
Controller
SW2
PB
C42
0.1U
E05A92KA
3
1
OUT
N.C.
TH09502NA
1
3
FL1
C38
2
0.1U
J24
J
GND2
67.15472MHz
R33
68
CR2
VCC 4
3
1
TH09502NA
1
3
FL2
2
C39
0.1U
GND2
45.0000MHz
OUT
N.C.
C46
0.1U
14
7
IC8
+5
R10 R32 R72
10K 10K 10K
R50
R51
R52
57
58
59
60
CN4
VCC
VCC
VCC
VCC
41
42
43
44
GND
GND
GND
GND
45
46
47
48
49
50
51
52
RESET
INH
CMREQ
WRRDY
RDREQ
WRT
RDT
TYPB
53
54
55
TXD
READY
RXD
56
NC
7
8
9
10
11
12
13
14
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
AB0 15
AB1 16
AB2 17
AB3 18
AB4 19
AB0
AB1
AB2
AB3
AB4
20
21
22
CS
RD
WR
24
23
25
1
26
2
NMI
IREQ
DREQ
PCLK
DTCT
RST
31
32
33
34
35
36
TXD+
TXDRXD+
RXDDTR
CTS
37
38
39
40
NC
NC
LCD
SWRD
27
28
29
30
VCC
VCC
VCC
VCC
3
4
5
6
GND
GND
GND
GND
3.3K
3.3K
3.3K
GND
VCC_GND
R2
C1
10
1U/50V
Patern Only
CUT THE FOLLOWS LINES IN MP BOARD.
1. IC1---126,127,129,116 PIN
2. IC3---49 PIN
R12 100 11
VCC7
NC
NC
NC
C5
NC
GND4
M51953BFP
CE
GND 31
OE
BYTE GND 12
MROM8M*16
IC7E
91
CR1
VCC 4
68
8
R17
1K IC6
NOT USE 21,22 PIN IN 4M*16.
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
2
3
4
5
6
7
8
9
RM7
8
7
6
5
1
2
3
4
R16
1K
RM5
1K
1
8
2
7
3
6
4
5
R8
1K
AT93C46
R46
1
IC8B
0
QS D 12
CP 11
1
2
3
8
5 678
CN1
PJ
9
6
4 321
470P
16
19
20
21
22
23
24
25
26
27
28
29
30
33
R5
91
VSS 90
VSS 80
VSS 78
VSS 65
VSS 51
VSS 40
VSS 30
VSS 21
VSS 111
VSS
C12
C49
0.1U 0.1U
C16
C50
0.1U
0.1U
C13
0.1U
R/W
READY
61
44
45
67
68
69
63
470P
470P
R4
RCHK0 82
83
RCHK1 84
RCHK2 85
RCHK3
TEST1 71
TEST2 72
TEST3 73
TEST4 74
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
C29
100
BL1 2012Z601
NOT USE C52 IN 16M*16.
1
2
3
4
68
RM2
8
7
6
5
R29
470P
C27
68
C25
0.1U
VSS
VSS
VSS
DRAM16M*16/SOJ
1
2
3
4
RM1
8
7
6
5
PRINT 75
77
VSREQ 76
HSYNC
VDOOUT 89
RTST0 92
RTST1 93
RTST2 94
RTST3 95
RTST4 96
97
RTST5 98
RTST6 99
RTST7
1 74F74
3
J28,29,30,31,32 ARE "CUT LAND PATTERN".
A A A A A A A A A A A A A A A A A A A A A A A A D DD D D D D DD DDD DDD DD DDD DD DD D D DD DD DD
2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 R RR R R R R RR RRR RRR RR RRR RR RR R R RR RR RR
3 32222222 222 111 11 111 11 987654 32 10
54 321 09 876543 210
1 09876543 210 987 65 432 10
IC3
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
N2012Z121
J25,J26,J27
1-2 4M*16 / 2-3 16M*16
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
DIR
STRB
SELIN
AUTO
INIT
ACK
BUSY
PE
SELOT
ERR
TEST0
TEST1
2
3
4
5
6
7
8
9
12
13
14
15
16
17
18
19
22
23
24
25
26
27
28
29
32
33
34
35
36
37
38
39
BL2
VSS
VSS
VSS
DRAM16M*16/SOJ
VCC
VCC
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
62
70
C52
0.1U
IO1
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
IO10
IO11
RAS IO12
LCAS IO13
UCAS IO14
IO15
WE
IO16
OE
VCC
VCC
VCC
0.1U
3
14
25
36
51
67
78
89
100
116
A2
A3
A4
A5
A6
A7
A8
A9
J26 J/3
2
C23
0.1U
J
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
DR8
DR9
DR10
DR11
DR12
DR13
DR14
DR15
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR24
DR25
DR26
DR27
DR28
DR29
DR30
DR31
PD1
PD2
PD3
PD4
SIMM/72PIN
1
3
J
J21
98
97
96
95
94
93
92
91
E05A93AA
VSS
VSS
VSS
1
3
J20
EXRD
EXWR
2 EXIN0
1
128 EXIN1
127 EXIN2
EXIN3
69
63 CTSL
64 N.C.
65 N.C.
66 N.C.
70 N.C.
N.C.
4
13 VCC
26 VCC
35 VCC
52 VCC
VCC
68 VCC
77 VCC
90 VCC
99
115 VCC
VCC
C15
62
61
67
68
69
70
MA9
10K
10K
C11
0.1U
1
39
72
MA0
R59
R60
*
DR[0..31]
CSX2
CSX3
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
102
101
2
C6
0.1U
IC4
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
40
39
38
37
33
33
33
33
68
68
68
RAS0 130
RAS1
CAS0 12
CAS1 15
CAS2 18
CAS3 23
DWE 95
R22
R23
R24
R25
34
33
32
31
30
29
28
27
55
56
57
IRL0
IRL1
IRL2
IRL3
E05A91KA
68
12 34
10K
149
147
152
153
151
148
VDD110
VDD
VDD 20
VDD 30
VDD 40
VDD 81
VDD 100
108
VDD 114
VDD 120
VDD 132
VDD 145
VDD
87 65
R3
127
128
129
130
131
134
135
136
137
138
150
ICG
ICDS
ICRW
ICM1
ICM0
ICA1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
R11 RM6
10K 10K
10K
R27
TP1
TP
DWE 139
71
72
73
74
R36
R37
R107
4321
RM8
1K
C28
A[2..27]
6
20
28
32
37
38
49
52
63
66
74
76
87
98
101
109
111
118
132
135
139
144
151
154
RM10
1K
RM9
1K
SW1
PB
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
IOBUS/OPTIF
76 66 73
09 87 29 1
N NNR V V V
C CC/ S S S
B SS S
341 3 44
531 5
6 665 55 542222
6 66555552 222
71 4 54 33 332 44 674444 133 21 111 11 1
900
87 639 68 612130 921 88 765 43 2 4 20864207 531 975 35 317 53 196420 86 42
V V V R WR E C C A A A A A A A A A A A A A A A A A A A A A A A A D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D
CC C E R D E S S 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0
P1 0 3 2 1 0 9 8 7 6 5 4 3 2 1 0
CC C S
109 87654321 098 76 543 21 0
E
T
CN5
ROM_SIMM
Figure A-3. C169 MAIN-B Circuit Diagram (1/2)
Rev. A
A-11
Rev. A
CN206
GN D1
+ 5V
+ 24V
GND2
1
A
2
A
3
B
4
B
3
4
1
2
5
2
1
TP
TP 202
FUSER
CN207
1
2
4
5
3
7
1
6
4
3
2
5
2
+5V
1
TH
+24V
FA N
C N211
CN202
NC
+ 24V
+5V
P_CTL
GND2
CN210
+5V
SSCA N
LDATA
LDAP C1
LDAP C2
LD_C TL
GN D1
CN205
1A
R 207
R203
TP
TP203
C201
220U /16V
TP
TP201
200m A
3.0K 1.0%
0.1U
C243
0.1U
C259
0.1U
C258
33
680
R206
R253
0.01U
C239
13
820P
56K
820P
C211
R 218
C209
2.7 1/4W
R225
R220
1K
1 1/ 2W
820P
C208
R222
820P
56K
R217
R219
1K
1 1/2W
2
10
15
1
1A
16
2
10
15
1
1A
16
0.1U
C203
ULN 2003A
4
74HC02
IC202D
IC 203D
6.8 1/ 4W
R227
C210
2.7 1/4W
R224
R221
IC202-7
13
1000P
C206
PLACE NEAR CN210
PLAC E NE AR C N205
1K
R254
4700P
C253
2. 2K
11
14
6
11
14
4
GND
5
GND
12
G ND
13
G ND
VCC
VCC
3
8
PH
9
I0
7
I1
VM M
VM M
TEA3718SDP
T
C
E
MA
MB
6
3
1
4
GND
5
GND
12
GND
13
GND
VCC
VCC
VM M
VM M
8
PH
9
I0
7
I1
C214
1000P
TEA 3718SDP
IC205
T
C
E
MA
MB
IC204
IC202-14
47K
R226
1A
1A
74HC02
IC 202A
C 231
1000P
9
8
3
2
10K
10K
R292
R293
C229
1000P
C212
47U 35V
C235
1000P
C230
1000P
C236
1000P
74HC 02
IC202C
C237
1000P
C232
1000P
C238
1000P
FB1L3N
DT201
12
11
10
4
1000P
C252
74HC02
IC202B
R 210
3.0K
R209
1.0K
R238
R237
22P
C204
22P
2
3
1
C205
6
5
10K
R296
10K
R 291
10K
10K
CR 201
8MH z
10K
R295
1000P
C251
VR 201
10K
55
53
49
38
36
58
29
28
24
20
19
18
17
1
65
70
69
68
67
31
30
54
79
4
57
77
78
6
5
52
13
12
3
71
66
56
10
11
16
15
9
M3807X
P01
P03
P07
P22
P24
P36
P40
P41
P43/IN T1
P47/SRD71
P50/ TOUT
P51/INT2
P52/INT3
P62/AN7
P87/RTP5
P82/ RTP0
P83/ RTP1
P84/ RTP2
P85/ RTP3
XOUT
XIN
P02
AM POU T
P77/AN4
P37
P64/AN10/ AM P-
P63/ AN 9/AM P+
P75/AN2
P76/ AN3
P04
P56/DA1
P57/DA2
P60/ AN5
P81/ DA4
P86/RTP4
P00
P71/SO UT2
P70/SIN2
P53/IN T4
P54/CNTR0
P72/SCLK2
IC201
VSS
AV SS
CNAV SS
P65/ AN11/ DAVREF
VCC
AM PVCC
AD VREF
P17
P74
P73
P05
P06
P55/CNTR1
P61/AN6
P80/ DA 3
P 25
P 26
P 27
P35
P13
P10
P11
P12
P14
P16
P34
P15
RE SE T
P33
P30/RTP 6
P31/RTP 7
P32
P42/INT0
P20
P 21
P 23
P46/SCLK1
P45/TXD
P44/RXD
8
7
2
32
75
26
73
80
74
76
41
51
50
14
72
35
34
33
59
45
48
47
46
44
42
60
43
27
61
64
63
62
25
40
39
37
21
22
23
1
2
3
8
R290
10K
TP205
TP
0.1U
C 215
1000P
C217
6
TP204
TP
1000P
C 202
0.1U
R205
6.8K
1
R204
39K
C218
C 216
0.01U
7
5
C
4
GN D
V CC
M 51953AFP
NC
NC
NC
NC
O UT
IC 251
16
1000P
D 201
1SS 226
C219
U LN 2003A
IC203A
C254
0.01U
1000P
C220
R 236
47K
C255
0.01U
C213
0.022U
6
3
5
2
100K
R 223
IC203F
IC 203C
IC 203E
IC 203B
7
1 2 3 4
8 7 6 5
47K
R 216
400m A
47K
R215
10
R233
R234
8
9
C233
2003X
GND
NC
IC203
1000P
U LN 2003A
ULN2003A
11
ULN 2003A
14
ULN 2003A
12
15
ULN2003A
IC203G
R M202
4.7K
R 214
R213
0.01U
C256
400m A
4.7K
4.7K
220 1/4W
0.01U
C240
220 1/ 4W
R208
2.2K
R211
10K
C 228
1000P
0.1U
C207
C241
0.01U
10P
C 224
1000P
C223
1000P
0.1U
R M201
3.3K
C226
1000P
C222
1000P
C242
C227
1000P
1 2 3 4
8 7 6 5
C257
1000P
C 234
R212
2.2K
C221
1000P
4
8
1
3
2
5
6
7
C225
1000P
1
4
3
6
7
8
9
2
10
11
12
5
1
3
2
5
4
1
3
6
2
H V_S2
+ 24V
HV_C
HV_S
HV_T
HV_B
BIAS _M
GND2
CN204
+ 24V
+ 5V
NC
PE 2
P SIZ0
PSIZ1
PSIZ2
FEED2
CHEC K1
CHEC K2
CHEC K3
GND 1
CN 209
PS 3
PS 3
G ND
CN208
+24V
NC
PS 1
PS 1
FEED 1
GND1
CN203
RESE TX
S RCLK X
S TS X
C MDX
TODX
EPRDYX
PRRDYX
ETBSYX
CTBSYX
CPRDYX
P RINTX
HSYN CX
VIDEOX
EPL-5500 Service Manual
Appendix
Figure A-4. C169 MAIN-B Circuit Diagram (2/2)
A-13
L
N
3
1
CN3
5 3 25 9 -0 32 0
N
L
F1
6.3 A , 12 5 V
R1
4 70 K
C1
0 .22 u F
1 25V
NR 1
ENC2 71D -1 0
Z7D2 71
L1
Z 0 408 , Z 04 6 2
C4
C3
C3 , C 4
220 0pF
125 V
C2
0.1u F
12 5V
C5
2 20 0 pF
1 25 V
BD 1
D 2 5 8A 50
D 2 S 86 0
T h1
10 0 -g,
M 1 00 1 0C ,
M 1 00 0 7 C
N T H9 D 1 0 0L A
C5
3 30u F
2 00V
+
C8
6 80p
1 kV
5 00V
R5
22
2W
C19
0.01 u
25 0V
L 10
R 24
1 0 0K
0 .5W
D4
EU 2A, A GIC
ER A22-06
Q1
2S K1 445
2S K1 446
R7
4.7
ZD2
H Z S15
R 11
68 K
R4
22 0K -18 0K
0.25 W
R5
390 K
0.25W
R8
680
0 .5 W
C 10
47 00p F
50 V
R9
10K
PC1
PC81 7
C9
0 .0 1uF
5 0V
Q2
D 1 20 7
C 1 21 3
C 1 81 5
C7
0.1uF
125 V
L 11
Z0 068
ZD 1
H ZS1 8
-20
R 10
22 K
R 25
1 8K
R2
4 .7
TR C
T M 8 41 5
S M 8G Z 4 7
R3
33
T1
Z04 96
PC 2
S2 1M D4 V
S2 1M E4F
D2
Y G 90 1C 2
D 5LC 2 0U
D3
Y G 8 01 C 4
D 5S C 4M
F M B -24 M
R 12
1K
0.25 W
R 21
0 .25 W
R 28
33
+
C 17
3 30 0u F
1 0V
SC R 1
T F 32 15
2 P 4M
D1
ER AG1-2 1
1 SS8 1
R12
1.2K
C 14
0 .0 47u F
5 0V
+
C1 6
100 0uF
35V
+
R1 5
47K
R 27
1 .2K
0 .5W
C1 3
0.1uF
50V
C 21 1 uF , 50V
R 30
33
ZD 3
H ZS6
C 15
10 00 uF
35 V
ZD 4
H ZS 27
R29
33
PC 1
PC 917
R1 4
33 0
IC1
L 54 31
T L 43 1
u P C 10 9 3
H A 1 74 3 1
R 19
1.2K
0.5W
R22
10 0
0.5W
R 20
1 .2 K
0 .5 W
VR1
1K
R 15
1 .8K
L9
R26
1 .2 K
0 .5 W
SW 2
A M 51 66 2A 53 1
L7
Z0 400
CN1
+2 4V GN D
+5 V G N D
+24 V
3
H.L
+5 .1 V
1
4
2
5
Rev. A
A-14
EPL-5500 Service Manual
Appendix
Figure A-5. PWB-E (120 V) Circuit Diagram
Rev. A
3
2
HE A TE R
36 0W
L.
1
IN L1
3
N.
L.
HEA TE R
2
36 0W
1
C N2
SW1
W H2
W H1
C1
2 50 V
0 .3 3 u F
F1
2 50V
5A
VS1
4 70 V
L1
C M 1 02
R2
1 /4W
4 70K
R1
1 /4 W
4 70 K
C3
2 50 V
2 20 0 p F
C2
2 50 V
L2
2 20 0p F C M 1 02
C4
250 V
0.1 u F
RC1
6 0 0V , 1 .5A
C7
4 0 0V
8 2 uF
RT1
10
VS2
47 0 V
R6
2W
10 0
+
C9
1KV
1 00 pF
C 21
2 50V
0 .1u F
R1 2
4.7 K
1/4 W
Q2
50 V
2A
Q1
80 0V
3A
C 22
0 .0 1u F
R22
1/2W
33
C 11
0.0 4 7u F
VR 1
200
R 10
39 0
R7
2W
16
D1
8 00
1A
R4
1 /2 W
4 70 K
C 10
0 .03 3 u F
R5
3W
1 00 K
R3
1/2 W
47 0 K
D2
7 0V 0 .1 5A
R21
1/2W
1K
TH 1
6 00 V
5A
R8
2W
16
D3
2 .0-2 .2V
R9
2W
16
C8
63 0 V
0.0 1uF
ZC
P I6 1
D4
7 0V
0 .15 A
4
6
4
5
R 51
10 0
M51
2
1
T1
T M 19 9
P I5 1
R 11
1 00
2
1
R52
1K
R C 51
2 00 V 1 0A
R C51
20 0 V 10 A
R 69
1W
1 .2 K
C 51
4 .7 u F
+
N.
R 54
1 .4 7 K
1%
R63
1.58 K
1%
C 62
3 5V
2 200 u F
+
R64
2W
1 .2K
T H61
400V
5A
+
L 62
C L 08 6
C 65
50 V
10 u F
C64
+ 1 0V
2 20 0 u F
R 63
2W
1 .2 K
C 61
4 .7 u F
+
D 63
70V
0 .15 A
D 62
2 8.2 2 9.6 V
R61
1K
R62
47
D 61
4 .7 4 .9 V
D 65
1 9.5 -2 0.4 V
D 64
7 0V
0 .1 5A
R70
22
1 /4 W
R 73
W IR E , P E S
7
4
M61
+
-
8
5
6
C 66
0 .1 uF
R 66
3W
33
R 72
3 .9 K
R 71
1 00
S W 61
3
4
2
1
5
C N1
G N D(+ 5 .1V )
+ 5.1 V
G N D (+2 4V )
+ 24 V
FU S E R LA MP
EPL-5500 Service Manual
Appendix
Figure A-6. PWB-E (220/240 V) Circuit Diagram
A-15
Appendix
EPL-5500 Service Manual
A.3 CIRCUIT BOARD COMPONENT LAYOUT
Figure A-7. C169 MAIN-B Component Layout (Front)
A-16
Rev. A
EPL-5500 Service Manual
Appendix
Figure A-8. C169 MAIN-B Component Layout (Rear)
Rev. A
A-17
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