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Confidential
Service manual
TM-L90 series
Issued date
,
,
Issued by
English
401392002
Rev.C
EPSON
Confidential
TM-L90 Service Manual
Revision Table
Rev.
Page
Description
Rev. A
all pages
Newly authorized
Rev. B
viii
Add the information of the related documentation
Reason for change:
The “TM Service & Support Tool“ is release.
1-1
Add the “power supply unit type in the ”specifications and configurations.
Exclusive external power supply unit: PS-175 (North America only) or PS-180 (power
supply packaged specification only).
External power supply unit: Model PS-180 and PS-170.
Reason for change:
Missing information.
2-2
Added the sentence below to the explaination “Paper is jammed inside the
printer”.
{Please confirm to be attached the holder guide sheet C(#182) and D(#183) when
the paper is jammed in spite of doing the above steps. (Refer to Appendix D-12.)}
Reason for change:
The parts “Holder guide sheet C(#182) and Holder guide sheet D(#183)“ were
provided in order to prevent the paper from jamming.
Add the “before servicing“ and “diagnosing failures“.
Reason for change:
To make the explanation easier to understand.
2-3
Change the “Troubleshoting Fliowcharts“ to the “simptoms and solutions”.
Reason for change:
To make the explanation easier to understand.
2-5
Add the explanation to the ”paper layout error” that is the automatically
recoverable errors of the ”Troubleshooting using the ERROR LED”
Reason for change:
Missing information.
2-6
Add the below explanation to ”Autocutter error” that is the automatically
recoverable errors of the ”Troubleshooting using the ERROR LED”
❏ Check the cutter motor sub-assembly. (see page 2-8.) Replace the motor and
the main circuit board unit if the cutter motor sub-assembly has been shorted.
(See page 3-39, 3-13.)
❏ Replace the main circuit board unit to see if the printer is repaired. (See page 313.) If the printer is repaired, analyze the defective part by referring to “Main
Circuit Board Unit Test Points“ on page appendix F-6.
Reason for change:
Missing information.
2-8
Add the “test points on the printer mechanism“.
Reason for change:
Because of changing chapter 2.
3-17
Add the “inslating tape“ to fix ferrite core.
3-37
Add two spacers on the illustration.
i
Confidential
Rev.
Page
Description
4-1
Add the paper types for original and specified paper.
Reason for change:
To make the explanation easier to understand.
6-10
Add the note about the setting for serial communication conditions.
6-13
Changed the explanation for the ”Capacity of the receive buffer” that is the
function for the”memory switch1-2”
old: Capacity of the receive buffer “large“/OFF.
new: Capacity of the receive buffer “4KB“/OFF.
old: Capacity of the receive buffer “small“/ON.
new: Capacity of the receive buffer “45B“/ON.
Reason for change:
To make the explanation easier to understand.
Rev. B
6-15
Add the felow explanation for “select paper withs”.
43 steps in increment of 1 mm, except for the size from 71 mm to 79 mm
Reason for change:
To make the explanation easier to understand.
7-3
Add the explanation for “Precautions on paper handling“.
When the printer is not used for one week or more, it is recomended not to leave
the thermal paper between the platen and the print head.
Reason for change:
Missing information.
Appendix A
Add the explanation for the paper types for original and specified paper . (To
ensure print quality, be sure to use the specified paper.)
old: Label paper
new: Lavel paper (with black mark)
Lavel paper (without black mark)
Reason for change:
Missing information.
Appendix D
ii
The parts below were newly provided.
spacer
Sheet, holder guide, C
Sheet, holder guide, D
Confidential
Rev.
Page
Rev. C
TM-L90 Service Manual
Description
<Discontinued parts>
Sheet, holder guide, (Ref# 176)
Sheet, holder guide, C (Ref# 182)
Sheet, holder guide, D (Ref# 183
3-26,46,52
The new parts “Spacer Thermal Head“ is added on Thermal Print Head.So the following illustration
is changed.
Before change
After change
Spacer Thermal Head
3-25,52
Added the explanation about the method of installing the head (new type)
as “Important Note About Installing Thermal Print Head“.
Appendix
D-10
The part “Spacer Thermal Head“ on ParsList and Exploded Diagram is deleted.
iii
Confidential
TM-L90 Service Manual
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BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT. PLEASE RETURN
THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS.
❏
This document contains confidential, proprietary information of Seiko Epson Corporation or its affiliates. You
must keep such information confidential. If the user is a business entity or organization, you must limit disclosure
to those of your employees, agents, and contractors who have a need to know and who are also bound by
obligations of confidentiality.
❏
On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson’s request, you must
stop using the confidential information. You must then return or destroy the information, as directed by Seiko
Epson.
❏
If a court, arbitrator, government agency, or the like orders you to disclose any confidential information, you must
immediately notify Seiko Epson. You agree to give Seiko Epson reasonable cooperation and assistance in the
negotiation.
❏
You may use confidential information only for the purpose of operating or servicing the products to which the
document relates, unless you obtain the prior written consent of Seiko Epson for some other use.
❏
Seiko Epson warrants that it has the right to disclose the confidential information. SEIKO EPSON MAKES NO
OTHER WARRANTIES CONCERNING THE CONFIDENTIAL INFORMATION OR ANY OTHER
INFORMATION IN THE DOCUMENT, INCLUDING (WITHOUT LIMITATION) ANY WARRANTY OF TITLE
OR NON-INFRINGEMENT. Seiko Epson has no liability for loss or damage arising from or relating to your use of
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You may not reproduce, store, or transmit the confidential information in any form or by any means (electronic,
mechanical, photocopying, recording, or otherwise) without the prior written permission of Seiko Epson.
❏
Your obligations under this Agreement are in addition to any other legal obligations. Seiko Epson does not waive
any right under this Agreement by failing to exercise it. The laws of Japan apply to this Agreement.
Cautions
❏
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any
means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of
Seiko Epson Corporation.
❏
The contents of this document are subject to change without notice. Please contact us for the latest information.
❏
While every precaution has been taken in the preparation of this document, Seiko Epson Corporation assumes no
responsibility for errors or omissions.
❏
Neither is any liability assumed for damages resulting from the use of the information contained herein.
❏
Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties
for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of: accident, misuse, or
abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.)
failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.
❏
Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options
or any consumable products other than those designated as Original EPSON Products or EPSON Approved
Products by Seiko Epson Corporation.
EPSON® and ESC/POS® are registered trademarks of Seiko Epson Corporation
Rev.B
i
Confidential
Contents
For Safe Repair and Maintenance Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Key to Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Safety Precautions on Maintenance/Repair/Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Modular Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Aim of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Contents of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Chapter 1 Product Overview
Specifications and Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Chapter 2 Troubleshooting Guide
Preparations for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Before Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Diagnosing Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Symptoms and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
How to Use the Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Troubleshooting Using the ERROR LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Test Points on the Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Chapter 3 Disassembly and Assembly
Notes for Assembly and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
How to Read this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Structure of this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Shortest Route for Disassembly of Major Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Representation of Small Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Replacing the Thermal Print Head Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Disassembly and Assembly of the TM-L90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
First Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Disassembly and Assembly of the Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
First Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Second Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35
Third Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
Chapter 4 Adjustment and Settings
Threshold Value Setting for Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Chapter 5 Maintenance, Inspection, Lubrication, and Cleaning
Periodic Maintenance or Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Recommended Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Cleaning the Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Cleaning the Thermal Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Chapter 6 Installation
Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Installation Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Vertical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
ii
Rev.B
Confidential
TM-L90 Service Manual
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Installation Position for the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Detecting Point of the Roll Paper Near-End Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Paper Roll Cutting Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Paper Roll Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching the Power Switch Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location of the DIP switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the NV Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Switch Setting Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Layout Automatic Setting Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customized Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Communication Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2
6-3
6-4
6-5
6-7
6-8
6-9
6-9
6-10
6-12
6-13
6-13
6-14
6-14
6-16
6-16
Chapter 7 Handling
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions on Handling the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions on Paper Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEDs and Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powering the unit ON or OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading the paper roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the roll paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1
7-2
7-3
7-3
7-4
7-4
7-4
7-6
7-7
Appendix A General Specifications
Printing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Autocutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Roll Supply Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions and Mass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drawer Kick-out Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Buttons and Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Panel Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIP Switches and NV Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-1
A-1
A-2
A-4
A-5
A-6
A-6
A-7
A-8
A-8
A-8
A-8
A-8
A-9
A-9
A-9
Appendix B Overview of the Mechanisms
Cover Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Print/Paper Feed Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Print Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the paper width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rev.B
B-2
B-3
B-4
B-5
B-6
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Autocutter Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Full cut and partial cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Manual cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Appendix C Tools
Appendix D Parts List
Alphanumeric List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
Reference Number List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-6
Overall Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Case Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Appendix E Lubrication Points Diagram
Appendix F Overview of Electric Circuits
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2
Main Circuit Board Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3
Switch Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6
Sub Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6
Interface Circuit Board Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6
Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-7
Test points on the main circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-7
Test Point Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-8
Parts Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9
Main Circuit Board Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9
Switch Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-11
Sub Circuit Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-11
Circuit Board Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Main Circuit Board (1 of 3) (Drawing Number 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Main Circuit Board (2 of 3) (Drawing Number 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2
Main Circuit Board (3 of 3) (Drawing Number 20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3
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TM-L90 Service Manual
For Safe Repair and Maintenance Work
Key to Symbols
The symbols in this manual are identified by their level of importance, as defined below. Read
the following carefully before handling the product.
WARNING:
You must follow warnings carefully to avoid serious bodily injury.
CAUTION:
Observe cautions to avoid minor injury to yourself, damage to your equipment, or loss of
data.
Note:
Notes have important information and useful tips on the operation of your equipment.
Safety Precautions on Maintenance/Repair/Inspection
WARNING:
❏ Be sure to use the designated type of fuse for the circuit board. Use of a different
type may result in fire.
❏ Remove the power cord and all other cables from this product before disassembly
or reassembly to prevent electrical shock.
❏ To prevent the possibility of electrical shock, do not perform maintenance, repair, or
inspection during a thunderstorm.
❏ Shut down your equipment immediately if it produces smoke, a strange odor, or
unusual noise. Continued use may lead to fire or electric shock. Immediately unplug
the equipment.
❏ Only disassemble this product as described in this manual. Do not make
modifications to the unit. Tampering with this product may result in injury, fire, or
electric shock.
❏ Be sure to use the specified power source. Connection to an improper power source
may cause fire or shock.
❏ Never insert or disconnect the power plug with wet hands. Doing so may result in
severe shock.
Rev.B
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Confidential
CAUTION:
❏ When mounting or replacing the paper roll, be careful not to touch the manual
cutter, because it is sharp and can injure you.
❏ This product contains other metal parts with sharp edges in addition to the cutter.
Touching these parts also may cause injury.
❏ Parts on the circuit board may become hot during operation. Therefore, wait
approximately 10 minutes after turning the power off before touching them.
❏ Note that the thermal print head and paper feed motor become very hot during
normal operation, creating the danger of burn injury. Be sure to wait for about 10
minutes after turning printer power off before beginning the maintenance, repair, or
inspection.
Modular Connector
Use the modular connector specifically designed for the cash drawer for this product. Do not
connect this connector to an ordinary telephone line.
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TM-L90 Service Manual
About this Manual
Aim of the Manual
This manual was created to provide the information on printer maintenance and repair required
by technicians who handle this work.
Contents of the Manual
The configuration of the manual is as follows.
Chapter 1 Product Overview
Describes features and configurations of the
unit.
Chapter 2 Troubleshooting Guide
Explains troubleshooting (to pinpoint the
problem area by the symptom).
Chapter 3 Disassembly and Assembly
Describes disassembly and assembly of the unit.
Chapter 4 Adjustment and Settings
Provides information about adjustment.
Chapter 5 Maintenance, Inspection,
Cleaning, and Lubrication
Offers information about periodic maintenance
and inspection, cleaning, and lubrication of the
unit.
Chapter 6 Installation
Provides information about installation.
Chapter 7 Handling
Gives information about handling.
Appendix A Features and General
Specifications
Describes major specifications of the unit.
Appendix B Overview of the
Mechanisms
Describes major mechanisms of the unit.
Appendix C Tools
Provides information about tools required for
maintenance and repair.
Appendix D Parts list
Lists service parts and gives an exploded view
of the unit.
Appendix E Lubrication Points Diagram
Shows a lubrication drawing of the unit.
Appendix F Overview of Electric
Circuits
Provides electric circuit diagrams and
explanations about major elements
Rev.B
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Confidential
Related Documentation
Documents related to the TM-L90 are listed below.
Documentation
Related Documents
Name of document
Description
TM Service & Support Utility User’s
Manual *1)
This manual is written for the person that repairs or adjusts of the TM-L90.
TM-L90 User’s Guide
This manual is written for the operator of the TM-L90.
TM-L90 Developer’s Guide.
This manual is written for users who are designing TM-L90.
*1)TM Service & Support utility is to use for repairing the TM printer. The utility has the
function below.
• It uses for repair of the TM-L90 and adjustment.
The repairment means to change the print head, autocutter, main circuit board unit etc.
• Communication test, self-test, and test print can be performed.
• Setting for the memory switch or customized value can be performed.
• The error history information saved on the memory that a printer has when a printer
is repaired can be reffered to.
• It can check that sensors are operating by using the demand of real-time status.
• Sequence peculiar to a printer, such as a paper layout setting, can be performed.
• The newest firmware released can be written in memeory that a printer has.
• It is released and multilingual fonts can be written in the memory that a printer has
corresponding to multilingual.
• If a repair wizard is used, it can be made to complete by operating a series of work which
is needed for part exchange according to a screen.
If you have any questions, please contact SD-Technical Support.
Mail Address: [email protected]
viii
Rev.B
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TM-L90 Service Manual
Chapter 1
Product Overview
The TM-L90 is a line-thermal printer for POS systems that can print on roll paper or a ticket.
TM-L90 external view
Specifications and Configurations
The TM-L90 is configured by combining features from the list below.
Table 1-1 Specifications and configurations
Features
Selection
Description
Interface type
UB-S01 (RS-232)
UB-P02II (IEEE1284 (bidirectional parallel))
etc.
Use an EPSON-approved interface board
Font type
Alphanumeric
Japanese
Simplified Chinese
Traditional Chinese
Thai
Korean
Use the EPSON-approved main circuit
board
Autocutter setting
Partial cut
Full cut
For details about how to set partial or full
cut, see Chapter 6, “Installation.”
Paper width selection
38/60/80 mm, etc.
For details about how to set the paper
width, see Chapter 6, “Installation.”
Power supply unit
type
-Exclusive external power supply
unit: PS-175 (North America only)
or PS-180 (power supply packaged
specification only)
External power supply unit:
Model PS-180 and PS-170
Note: Selections in the table above may be added or changed in the future.
dpi: dots per 25.4 mm (dots per inch)
Rev.B
Product Overview 1-1
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TM-L90 Service Manual
Chapter 2
Troubleshooting Guide
Preparations for Troubleshooting
Before troubleshooting, check and, if necessary, correct the following point.
Roll paper cover does not open (cover open lever does not move)
1. Lift up and remove the cutter cover by inserting a flathead screwdriver or similar tool into
the cutout in the main case assembly and spreading it in the direction of an arrow.
2. Return the cutter blade to the normal position by rotating the autocutter knob in the
direction of the arrow. When it is returned to the normal position, a triangle mark becomes
visible through the hole in the autocutter frame.
Triangle
mark
Knob
Cutter cover
Cutout
Cutout
Main case assembly
3. Lift up the roll paper cover.
Note:
❏ Besides a paper jam, a foreign object, such as a push pin, can cause the autocutter to lock up. If this is
the case, follow the same procedure described above to return the cutter to its normal position.
❏ Do not open the cutter cover unless you find that the roll paper cover does not open.
Rev.B
Troubleshooting Guide 2-1
Confidential
Paper is jammed inside the printer
CAUTION:
❏ Take care not to let metal objects come into contact with the thermal head. Metal
can damage the head.
❏ Do not touch the thermal head or radiation plate. Printing can cause them to
become very hot.
1. Power off the unit and open the roll paper cover. If you cannot open the roll paper cover,
see the previous section.
2. Remove the jammed paper.
Please confirm to be attached the holder guide sheet C(#182) and D(#183) when the paper is
jammed in spite of doing the above steps. (Refer to Appendix D-12.)
Before Servicing
Pages vi to viii at the beginning of this manual provide precautions you should observe to
perform work safely and the necessary information to service this product safely. Always read
that information before starting your work.
Diagnosing Failures
Use one of the following methods to identify the area where a failure occurred.
❏ See Table 2-1 for diagnosing failures by the symptom of the problem.
❏ See Table 2-3 on page 2-5 for diagnosing failures from the ERROR LED code.
❏ See Table F-5 on page Appendix F-7when the failure is on the main circuit board unit.
Note:
The explanation of how to use the self test is on page 2-4.
The explanation of power on self checks is on page appendix F-4.
2-2 Troubleshooting Guide
Rev.B
Confidential
TM-L90 Service Manual
Symptoms and Solutions
This explains how to find the source of a problem using the symptom. The numbers in the
“Checkpoints” column indicate the order to use to check the problem. If you cannot determine
the cause of the problem after checking the first item, proceed to the next number.
Table 2-1 Symptoms and Checkpoints
Rev.B
Symptom
Checkpoints (by Priority)
Power does not turn on.
Power on self check is not completed.
Or, POWER LED does not light.
1. Check the power supply unit. Check that 24V is coming out of
the power supply. (See page F-6.)
2. Check the main circuit board unit. (See page F-6.)
3. Unplug the printer. Then unplug each motor or head or FFC’s
connector from the main board one by one; plug the printer
back in, and power it on. This will let you know if any motor has
burned out and is pulling down the power. (See page 3-13.)
4. Replace the I/F circuit board. (See page 3-11.)
5. Replace the Sub circuit board assembly. (See page 3-20.)
There are missing dots
in the print.
ThermallPrinting
Label printing
1. Clean the thermal print head assembly. (See page 5-2.)
2. Replace the thermal print head assembly. (See page 3-4.)
3. Replace the main circuit board unit. (See page 3-13.)
4. Replace the Head FFC. (See page 3-13.)
The print is thin.
Receipt Printing
Label printing
1. Clean the thermal print head assembly. (See page 5-2.)
2. Setting the memory switch. (See page 6-12.)
3. Replace the thermal print head assembly. (See page 3-4.)
4. Replace the main circuit board unit. (See page 3-13.)
Unevenness occurs in the
concentration of the print.
Receipt Printing
Label printing
1. Clean the thermal print head assembly. (See page 5-2.)
2. Replace the thermal print head assembly. (See page 3-4.)
3. Replace the main circuit board unit. (See page 3-13.)
Paper feed failure.
Thermal Printing
Label Printing
1. Check that the roll paper is properly loaded. (See page 7-6.)
2. Replace the main circuit board unit. (See page 3-13.)
3. Replace the receipt paper feed motor. (See page 3-34.)
Drawer kick operation failure.
1. Replace the main circuit board unit. (See page 3-13.)
2. Replace the Sub circuit board assembly. (See page 3-20.)
Missing characters/misprinted characters/font
breakdown.
1. Check the setting for serial communication conditions by Selftest. (See page 2-4.) You can change the setting with the DIP
switch 2 or memory switch (See page 6-10.). Also you can set with
the ’Printer Status’ function in the TM Printer Service & Support
Utility. (See the TM Printer Service & Support Utility Operatation
Guide.)
2. Replace the interface cable. (See page 6-11.)
ERROR LED is lit.
(When it is flashing, see page 2-5.)
Close the roll paper cover secure.
Troubleshooting Guide 2-3
Confidential
How to Use the Self-test
There are two types of self-tests.
❏ Print tests
Print Tests
Testing the Thermal Printer
Execute this test using the following procedure.
Table 2-2 Running the thermal printer print test
Step
Operation
Printer Operation
1
Turn the power supply ON while pressing the
FEED button, and continue to push the FEED
button untill ERROR LED is li.
The printer will print the status of the printer settings.
Afterward, the autocutter will cut the roll paper and
the PAPER OUT LED will flash.
2
Press the FEED button after the PAPER OUT LED
flashes.
The print test will be executed. When the print test is
completed, the printer will print ***completed***. The
printer will enter the normal printing mode when the
test is ended.
Note:
You can interrupt the test print by pressing the FEED button during the test. To continue, press the
FEED button again.
2-4 Troubleshooting Guide
Rev.B
Confidential
TM-L90 Service Manual
Troubleshooting Using the ERROR LED
You can learn the cause of a failure by checking the ERROR LED code. The following table
shows problems and solutions to repair the printer. Numbers in the "Solutions" column indicate
the order to use to check the problem. If you cannot determine the cause of the problem after
checking all the solutions listed, go back to Table 1-1, earlier in this chapter.
Automatically recoverable errors
Automatically recoverable errors are not abnormalities.
Table 2-3 Automatically recoverable errors
Error
ERROR LED Blinking Pattern
Description
Recovery
Print head temperature error
Approx. 320 msec
The temperature of the print
head is extremely high.
❏ Recovers automatically when the
print head cools.
Roll paper cover open error
Printing is not performed
correctly due to a cover open.
❏ Replace the autocutter unit.
Recovers automatically when the roll
paper cover is closed.
Paper layout error
Label paper or the black mark is
not detected, or the paper
layout of the paper installed in
the printer and the setting of the
paper layout defined by the
GS ( E command do not match.
❏ Recovers automatically when
prpper label paper or the black
mark installed in the printer.
Note:
With the memory switch, the “roll paper cover open” error can be specified either as an “automatically
recoverable error” or as a “recoverable error.”
Rev.B
Troubleshooting Guide 2-5
Confidential
Recoverable errors
Table 2-4 Recoverable errors
Error
ERROR LED Blinking Pattern
Description
Remedy
The autocutter does not work
correctly.
❏ Check to see if paper is jammed
around the autocutter. If so that,
remove the jammed paper. After
then close the roll paper cover,
turn it off, and then turn it on again.
❏ Check for paper dust or foreign
particles attached to the
autocutter blade (See the section,
“Cleaning.“in Chapter 5 for details
on how to remove these).
❏ Check the cutter motor subassembly. (see page 2-8.)
Replace the motor and the main
circuit board unit if the cutter
motor sub-assembly has been
shorted. (See page 3-39, 3-13.)
❏ Replace the main circuit board
unit to see if the printer is repaired.
(See page 3-13.)
if
The printer is repaired, analyze the
defective part by referring to “Main
Circuit Board Unit Test Points“.
(See page Appendix F-6.)
❏ Replace the autocutter unit.
Paper layout error
Label paper or the black mark is
not detected, or the paper
layout of the paper installed in
the printer and the setting of the
paper layout defined by the
GS ( E command do not match.
❏ Confirm if the error happened by
the jammed paper while printing. If
so that, remove the jammed
paper. After then close the roll
paper cover, turn it off, and then
turn it on again
❏ Perform the threshold value setting
for detectors. (See Chapter 4.)
❏ Check if the label paper or the
black mark paper installed in the
printer is a cause of the problem.
❏ Check if the paper layout of the
paper installed in the printer and
the setting of the paper layout
defined by the GS ( E command
match.
❏ Check for paper dust or foreign
particles attached to the LED
holder assembly and the black
mark paper detector circuit board
assembly.
❏ Replace the LED holder assembly.
❏ Replace the black mark paper
detector circuit board assembly.
Roll paper cover open error
(when an error that can possibly
recover is selected) *1)
Printing is not performed
correctly due to a cover open
❏ Close the roll paper cover, turn it
off, and then turn it on again.
Autocutter error
Approx. 5.12sec
2-6 Troubleshooting Guide
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Confidential
TM-L90 Service Manual
Note:
When a paper jam is present in the autocutter, turn off the unit and remove the jammed paper. Then turn
it on again.
Non-recoverable errors
CAUTION:
When any error shown below occurs, turn off the power as soon as possible.
Table 2-5 Non-recoverable errors
Error
ERROR LED Blinking Pattern
Approx. 320 msec
Description
Remedy
R/W error in memory or gate array
After R/W checking, the printer
does not work correctly.
❏ Replace the main circuit board
unit. (See page 3-13.)
High voltage error
The power supply voltage is
extremely high.
❏ Replace the power supply unit.
❏ Replace the main circuit board
unit. (See page 3-13.)
Low voltage error
The power supply voltage is
extremely low.
❏ Replace the power supply unit.
❏ Replace the main circuit board
unit. (See page 3-13.)
CPU execution error
The CPU executes an incorrect
address.
❏ Replace the main circuit board
unit. (See page 3-13.)
Interface circuit board error
Interface circuit board does not
work correctly.
❏ Check installation status of the
interface circuit board.
❏ Replace the interface circuit
board. (See page 3-11.)
❏ Replace the main circuit board
unit. (See page 3-13.)
Drive circuit error
One of the following was
detected.
1. Print head thermistor.
2. Level drive motor.
assembly.
❏ Check installation status of the
interface circuit board.
❏ Replace the head FFC. (See page
3-13.)
❏ Replace the thermal print head
assembly. (See page 3-4.)
❏ Replace the main circuit board
unit. (See page 3-13.)
❏ Replace the interface circuit
board. (See page 3-11.)
Approx. 5.12 sec
Rev.B
Troubleshooting Guide 2-7
Confidential
Test Points on the Printer Mechanism
Before you replace the main circuit board to see if the printer is repaired, you need to check the
printer mechanism. If the motor or the coils are shorted, replacing the main circuit board will
not fix the problem. The following explains how to test the motors and coils.
Table 2-6 Test points on the printer mechanism
Name of
Mechanism
Thermal
mechanism
assembly
Part Name
Internal Element
Function
Where to Check
Normal Status
Cutter motor subassembly
DC brush motor
Autocutter drive
Remove the cable
connector
connected to
CN8 on the main
circuit board. Test
between + and -.
There is
continuity.
(Aproxinately
38 ± 3.8Ω)
Paper feed
motor
4-phase stepping
motor
Receipt paper
feed
Remove the cable
connector
connected to
CN9 on the main
circuit board. Test
between pin 1
and pin 2 and
between pin 3
and pin 4.
Approximately
2.6 Ω (per
phase)
A
B
ROTOR
A
2-8 Troubleshooting Guide
B
Rev.B
Confidential
TM-L90 Service Manual
Chapter 3
Disassembly and Assembly
Notes for Assembly and Disassembly
Always observe the following precautions when disassembling and assembling the printer.
CAUTION:
❏
Wear a grounded wrist band when handling the internal circuit boards to prevent
damage from static electricity.
❏ When removing an internal circuit board, place it on an anti-static rubber sheet or
similar surface to prevent damage from static electricity.
❏ Be careful not to subject the circuit boards to shock or vibration, because this may
damage them.
❏ Do not touch the circuit board or cable terminals with your hands to prevent
contamination that may result in a malfunction.
❏ Always remove the power supply unit from the printer before working. Power is
flowing to the internal circuit boards even if you turn the printer off at the power
supply switch. You may damage the printer if you work while the power supply is still
attached.
❏ Remove all peripheral equipment connected to the printer before starting work.
❏ Do not perform any work that is not described in this chapter. Doing so may result in
injury or damage to the printer.
❏ Do not touch the FPC or FFC pins.
❏ Hold circuit boards only by their edges.
Rev.C
Disassembly and Assembly 3-1
Confidential
How to Read this Chapter
Structure of this Chapter
This chapter consists of the items listed in Table 3-1. Reading from the top item to the bottom in
sequence allows users to disassemble all the serviceable parts.
Table 3-1 Structure of this chapter
1st level
Disassembly and
assembly of the
TM-L90
2nd level
3rd level
Roll paper cover unit
Platen holder
Cutter cover
Connector cover
I/F circuit board unit
Main assembly case
Main circuit board unit
Disassembly and
assembly of the
printer mechanism
Cable wiring
Roll paper cover unit
Switch circuit board assembly
Sub circuit board assembly
Autocutter unit
Autocutter unit
Thermal print head assembly
Hinge cover
Label paper guide
Reduction gears
Label paper holder assembly
LED holder assembly and
cover plate spring
NE detector assembly
Auxiliary holder plate and
side plate guide shaft
Circuit board frame
Frame R and center frame
Front frame
Paper feed motor
3-2 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Shortest Route for Disassembly of Major Parts
The next diagram shows the shortest disassembly route of major parts. Perform disassembly by
following this diagram as well as explanations for the target item. For the disassembly
procedure of the thermal print head, see page 3-4.
Start
Cutter cover
Connector
cover
Main assembly
case
Auto cutter unit
Thermal print
head assembly
I/F circuit board
unit
Switch circuit
board assembly
Main circuit
board unit
N.E. detector
assembly
Paper feed
motor
Label paper
holder
Sub circuit board
assembly
Cover detector
assembly
Representation of Small Parts
The standard small parts used in this chapter (such as screws, washers, and nuts) are all
indicated with abbreviations. For details, see Appendix D, “Parts List.”
Rev.C
Disassembly and Assembly 3-3
Confidential
Replacing the Thermal Print Head Assembly
CAUTION:
❏ This job may be performed only after turning off the printer and waiting for
approximately 10 minutes. The thermal print head assembly may be hot, and
otherwise, you might get burned.
❏ When performing this job, take anti-static measures, such as wearing a grounded
wrist band. Failure to do so may result in thermal print head failure.
❏ Do not touch the print head (portion that appears like a black line, and the
adjacent areas) in the thermal print head assembly. Touching this area may result in
thermal print head failure.
❏ When the thermal print head assembly is contaminated or has a deposit of foreign
particles, wipe it off with a cotton swab moistened with alcohol.
1. Open the roll paper cover.
2. Remove the cutter cover by spreading area
of the main case assembly, as shown below:
Roll paper cover
Cutter cover
Main case assembly
3-4 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
3. Users may choose between partial cut and full cut by adjusting the autocutter unit to the
desired position. Check the part shown below to see if the autocutter is set to full cut or
partial cut. When you install the autocutter unit, return the unit to the user’s position.
Dowel
The dowel positions are marked
“F” and “P.”
To select partial cut: adjust the
dowel to the position marked P.
To select full cut: adjust the dowel
to the position marked F.
4. Remove the autocutter unit by removing the two S4 screws securing it. Stand the removed
autocutter unit against the front of the printer.
S4
Autocutter unit
Rev.C
Disassembly and Assembly 3-5
Confidential
5. While holding the two head holder springs so they do not fly out, pull out the spring holder
plate.
CAUTION:
Be sure to hold the two head holder springs while removing spring holder plate.
Otherwise, head holder springs may suddenly fly out, creating the danger of eye
injury.
Head holder springs
Spring holder plate
6. Lift up the thermal print head assembly and remove the head FFC from the thermal print
head assembly.
CAUTION:
To prevent static-generated failures, keep the removed thermal print head
assembly in an anti-static bag or other suitable container.
Thermal print head assembly
Head holder spring
Spring holder plate
3-6 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Follow the steps below to assemble the parts.
1. Attach the insulating tape on the new thermal print head assembly, as shown below; then
lubricate with G-45 along the surfaces on both ends of the head assembly.
G-45
G-45
Insulating tape
2. Attach the head FFC to the connector of the thermal print head assembly.
3. Place the thermal print head assembly in its installation position inside the printer.
4. Insert the two head holder springs onto the two dowels on the spring holder plate by
rotating them.
Head holder springs
Spring holder plate
5. Insert the two head holder springs into the groove in the thermal print head assembly.
6. While holding the two head holder springs so they do not fly out, install the spring holder
plate.
CAUTION:
Be sure to hold the two head holder springs while installing the spring holder plate.
Otherwise, the head holder springs may suddenly fly out, creating the danger of
eye injury.
7. Adjust the two head holder springs so they are perpendicular with the thermal print head
assembly.
8. Attach the autocutter unit in its installation position. At this time, align the two dowels on
the frame assembly with the two slits in the autocutter unit.
Rev.C
Disassembly and Assembly 3-7
Confidential
9. Set the autocutter unit to the user’s position (partial cut or full cut).
To select partial cut: adjust the dowel to the position marked P.
To select full cut: adjust the dowel to the position marked F.
Dowel
10. Secure the autocutter unit with the two S4 screws.
•
•
Note:
When tightening the screws, do not deform the frame assembly. This can decrease the sharpness of
the cutter.
Do not tighten the autocutter unit when the dowels are not properly engaged. This can also
decrease the sharpness of the cutter.
11. Install the cutter cover.
12. Close the roll paper cover.
3-8 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Disassembly and Assembly of the TM-L90
First Level
Cutter Cover
1. Open the roll paper cover.
2. Remove the cutter cover by spreading area
of the main case assembly, as shown below:
Roll paper cover
Main case assembly
Cutter cover
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-9
Confidential
Connector Cover
1.
With the main assembly upside down, remove the connector cover by pressing its rear
section and unhooking the two claws.
onnector cover
Claw
Install in the reverse sequence of removal.
3-10 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
I/F Circuit Board Unit
1. With the main assembly upside down, remove two S6 screws.
2. Remove the I/F circuit board unit.
I/F circuit
board unit
S6
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-11
Confidential
Main Case Assembly
1. With the main assembly upside down, remove two S5 screws and one S3 screw.
2. Remove the main case assembly.
S5
S3
Main case assembly
CAUTION:
When installing the case, do not pinch the lead wire. Doing so may cause failures.
Install in the reverse sequence of removal.
3-12 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Main Circuit Board Unit
1. Remove the cutter lead wire from connector
the lead wire.
. Then, remove the insulating tape securing
When installing, route the cutter lead wire as shown below, and then fix with the insulating
tape.
Front view
Right side view
Cutter lead wire
Insulating tape
Cutter lead wire
2. Remove four S6 screws and remove the bottom plate. (See the illustration on the next page.)
3. Remove lead wire
from the connector on the main circuit board unit.
4. Remove four S6 screws. (See the illustration on the next page.)
Note:
When tightening the four S6 screws, tighten in the order
tightened in any order, but should be tightened diagonally.
5. Remove the head FFC from connector
and
. The other two places can be
on the main circuit board unit.
6. Remove the three lead wires from the main circuit board unit connector, in the order of
, and
.
7. Remove the switch circuit board FFC from connector
,
on the main circuit board unit.
Note:
When replacing the switch circuit board FFC, note that the switch circuit board FFC is not bent when
provided as a service part. Bend it in the same way as the one that was installed into the printer. When
installing, hook the bent portion against the circuit board frame.
8. Remove the main circuit board unit.
Rev.C
Disassembly and Assembly 3-13
Confidential
Main circuit board unit
S6
S6
Bottom plate
S6
Install in the reverse sequence of removal.
3-14 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Disassembly and Assembly of the Printer Mechanism
Note:
The term “printer mechanism” is used only for convenience in this document; there are no parts in the
actual product that use this name.
First Level
Cable Wiring
1. Remove the lead wire of the LED holder assembly from one hook.
2. Remove the lead wire of the paper feed motor from two hooks.
3. Remove the NE detector lead wire from the hook on the frame L assembly. When installing,
see the figure below and hook the NE detector lead wire onto the frame L assembly by
wrapping around it twice.
CAUTION:
When removing the lead wire, take precautions against damaging the cable.
Hook
Hook
NE detector lead wire
Hook
Lead wire of the
LED holder assembly
Lead wire of the
paper feed motor
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-15
Confidential
Roll Paper Cover Unit
1. Release the two tabs on the label paper guide from the roll paper cover unit.
Tabs
Label paper guide
2. Remove the insulating tape that is securing the lead wire of the BM (black mark) paper
detector circuit board assembly.
Insulating tape
Lead wire
3-16 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
3. Remove one S1 screw to release the ground wire of the BM paper detector circuit board
assembly.
Ground wire
S1
4. Disconnect the lead wire of the BM paper detector circuit board assembly from the switch
circuit board assembly, and remove the ferrite core.
When assembling, pass the lead wire into the ferrite core twice so that you make one loop, as
shown below.
Ferrite core
Connector
Insulating tape
Lead wire (make one loop)
Rev.C
Disassembly and Assembly 3-17
Confidential
5. Remove the two E-rings (E2).
6. Remove the two cover rotation shafts by pressing them inside.
7. Remove the roll paper cover unit. Then, pull the lead wire of the BM paper detector circuit
board assembly out through the clearance in the hinge cover.
Cover rotation shafts
E2
Roll paper cover unit
Hinge cover
E2
To remove the roll paper cover unit, position the cover unit as shown below and pull out the
unit in the direction shown with the arrow in the illustration.
Roll paper cover unit
Note:
When you need to disassemble or assemble the roll paper cover unit further, see page 3-35 for instructions.
Install in the reverse sequence of removal.
3-18 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Switch Circuit Board Assembly
1. Remove the cover detector lead wire and the switch circuit board FFC from the switch
circuit board assembly.
2. Remove two S2 screws.
3. Remove the switch circuit board assembly by spreading the two hooks of the switch panel
holder.
Switch circuit board assembly
Switch panel holder
S2
Cover detector lead wire
Switch circuit board FFC
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-19
Confidential
Sub Circuit Board Assembly
1. Remove two S6 screws.
2. Remove the sub circuit board assembly by pulling it up diagonally and out.
Sub circuit board assembly
S6
Install in the reverse sequence of removal.
3-20 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Autocutter Unit
1. Users may choose between partial cut and full cut by adjusting the autocutter unit to the
desired position. Check the part shown below to see if the autocutter is set to full cut or
partial cut. When you install the autocutter unit, return the unit to the user’s position.
Dowel
The dowel positions are marked
“F” and “P.”
To select partial cut: adjust the
dowel to the position marked P.
To select full cut: adjust the
dowel to the position marked F.
2. Remove the two S4 screws.
3. Remove the autocutter unit.
S4
Autocutter unit
Frame assembly
Note:
When you need to disassemble or assemble the autocutter unit further, see page 3-39 for instructions.
Rev.C
Disassembly and Assembly 3-21
Confidential
Install with the following steps:
1. Attach the autocutter unit in its installation position. Then, align the two dowels on the
frame assembly with the two slits in the autocutter unit.
2. Set the autocutter unit to the user’s position (partial cut or full cut).
To select partial cut: adjust the dowel to the position marked P.
To select full cut: adjust the dowel to the position marked F.
Dowel
3. Secure the autocutter unit with the two S4 screws.
Note:
❏ When tightening the screws, do not deform the frame assembly. This can decrease the sharpness of the
cutter.
❏ Do not tighten the autocutter unit when the dowels are not properly engaged. This can also decrease
the sharpness of the cutter.
3-22 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Thermal Print Head
CAUTION:
❏ This job may be performed only after turning off the printer and waiting for
approximately 10 minutes. The thermal print head assembly may be hot, and
otherwise, you might get burned.
❏ When performing this job, take anti-static measures, such as wearing a grounded
wrist band. Failure to do so may result in thermal print head failure.
❏ Do not touch the print head (portion that appears like a black line, and the
adjacent areas) in the thermal print head assembly. Touching this area may result in
thermal print head failure.
❏ When the thermal print head assembly is contaminated or has a deposit of foreign
particles, wipe it off with a cotton swab moistened with alcohol.
1. While holding the two head holder springs so they do not fly out, pull out the spring holder
plate.
CAUTION:
Be sure to hold the two head holder springs while removing spring holder plate.
Otherwise, head holder springs may suddenly fly out, creating the danger of eye
injury.
Head holder springs
Spring holder plate
Rev.C
Disassembly and Assembly 3-23
Confidential
2. Remove the two head holder springs from the spring holder panel by rotating them.
3. Lift up the thermal print head assembly and remove the head FFC from the thermal print
head assembly.
CAUTION:
To prevent static-generated failures, keep the removed thermal print head
assembly in an anti-static bag or other suitable container.
Thermal print head assembly
Head holder springs
Spring holder plate
Head FFC
3-24 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Install using the following steps:
1. Attach the insulating tape on the new thermal print head assembly, as shown below; then
lubricate with G-45 along the surfaces on both ends of the head assembly.
G-45
G-45
Insulating tape
2. Insert the head FFC into the connector of the thermal print head assembly.
3. Pass the head FFC through as indicated with the arrow in the drawing on the previous page,
and place the thermal print head assembly in the installation position.
4. Insert the two head holder springs onto the two dowels on the spring holder plate by
rotating them.
Head holder springs
Spring holder plate
5. Insert the two head holder springs into the groove in the thermal print head assembly.
6. While holding the two head holder springs so they do not fly out, install the spring holder
plate.
CAUTION:
Be sure to hold the two head holder springs while installing the spring holder plate.
Otherwise, the head holder springs may suddenly fly out, creating the danger of
eye injury.
7. Adjust the two head holder springs so they are perpendicular with the thermal print head
assembly.
Note:
Please take care the following explanation to exchange the thermal print head with new type.
If the printer has the old thermal print head, the plastic sheet that the head is installed on need to be cut.
(Refer to “Importaint Note About Installing Thermal Print Head“ on page 3-52.)
Rev.C
Disassembly and Assembly 3-25
Confidential
Hinge Cover
1. Remove two S1 screws and one S2 screw.
2. Remove the hinge cover by spreading the two hooks.
3. Remove the feed sheet from the hinge cover.
4. Remove the DIP switch cover from the hinge cover.
Hinge cover
Feed
sheet
S1
DIP switch cover
S1
S2
Install in the reverse sequence of removal.
3-26 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Label Paper Guide
Remove the label paper guide by raising it and pulling it out from the label paper holder groove.
Label paper holder
Label paper guide
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-27
Confidential
Reduction Gears
1. Remove one E-ring (E2).
2. Remove reduction gear C.
3. Remove reduction gear D.
Reduction gear D
Reduction gear C
E2
Install using the following steps:
1. Lubricate the two reduction gear shafts with G-45, in a line-shape.
2. Install reduction gear D.
Note:
When installing reduction gears C and D, see the drawing and install them in the correct directions.
3. Install reduction gear C.
4. Secure with one E-ring (E2).
3-28 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
5. Lubricate half of reduction gear C with G-45.
6. Lubricate the contact area of frame R and the front frame with G-36.
7. Lubricate the contact area of the frame L assembly and the front frame with G-36.
8. Lubricate the contact area of the right side of the center frame and the circuit board frame
with G-36.
9. Lubricate the right side of the center frame and the groove in frame R with G-36.
Center
frame
Frame R
Circuit
board
frame
Frame R
Frame L assembly
Rev.C
Front
frame
Disassembly and Assembly 3-29
Confidential
Label Paper Holder
1. Remove the lead wire of the LED holder assembly from between the center frame and the
front frame.
2. Remove the S1 screw.
3. Pull the label paper holder out straight along the grooves in the frame L assembly and
frame R.
Frame L assembly
S1
Label paper holder
Front frame
Center frame
Frame R
Install using the following steps:
1. Pass the lead wire of the LED holder assembly through to the front, between the center
frame and the front frame.
2. Press in and slide the label paper holder straight along the grooves in the frame L assembly
and frame R, until it hits the stop.
CAUTION:
When installing the label paper holder, do not pinch the cables.
3. Tighten the S1 screw.
3-30 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Circuit Board Frame
1. Remove four S4 screws.
2. Remove the circuit board frame.
S4
Frame L assembly
Insulating tape
Frame R
S4
Circuit board frame
S4
Install using the following steps:
1. Affix insulating tape on the right side of the circuit board frame, as shown in the photo
above.
2. Install the circuit board frame. Then, align the dowels on the circuit board frame with the
holes in the frame L assembly and frame R.
3. Tighten the four S4 screws. See the drawing to locate the screw holes.
Rev.C
Disassembly and Assembly 3-31
Confidential
Frame R and Center Frame
1. Remove one S4 screw
.
2. Remove frame strengthening plate R.
3. Remove one S4 screw
.
4. Remove frame R.
5. Remove the center frame.
6. Remove one switch screw and remove the cover detector assembly from frame R.
Center frame
Cover detector assembly
Frame L assembly
Frame R
Switch screw
Insulating tape
S4
Frame strengthening plate R
S4
Install using the following steps:
1. Affix the insulating tape on the cover detector assembly, as shown in the photo above. (This
process is necessary only if the original cover detector assembly has the insulation tape
affixed.)
2. Install the cover detector assembly onto frame R and secure with one switch screw. Then,
align the front and back so that the protrusion on the switch faces the position marked on
frame R.
3. Install the center frame. Then, route the lead wire of the paper feed motor forward. Align
two dowels on the center frame with two holes in the frame L assembly.
4. Install frame R.
5. Tighten one S4 screw at
.
6. Install frame strengthening plate R.
7. Tighten one S4 screw at
3-32 Disassembly and Assembly
.
Rev.C
Confidential
TM-L90 Service Manual
Front Frame
1. Remove one S4 screw.
2. Remove frame strengthening plate L.
3. Remove the front frame.
Frame strengthening plate L
S4
Front frame
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-33
Confidential
Paper Feed Motor
1. Remove two W1 washers and one motor ground plate by removing three N1 nuts.
2. Slide out the paper feed motor from the hole in the frame L assembly.
3. Remove the three paper feed motor dampers from the paper feed motor.
4. Remove the three spacers from inside the three paper feed motor dampers.
N1 Motor ground plate
N1
W1
Spacer
Paper feed motor damper
N1
Spacer
Paper feed motor
damper
W1
Paper feed motor
Frame L assembly
Spacer
Paper feed motor damper
Install using the following steps:
1. Insert the three spacers into the three paper feed motor dampers.
2. Insert the motor dampers into the three holes in the frame L assembly.
3. Install the paper feed motor. To do this, insert the motor shaft into the cutout in the frame L
assembly; then insert the three screws on the motor into the holes in the three paper feed
motor dampers.
4. Install two W1 washers and one motor ground plate. Then, make sure the ground plate
touches the frame L assembly. If you insert the ground plate in an incorrect way, it does not
touch the frame.
5. Tighten the three N1 nuts with the specified torque of 34.3 to 39.2 Ncm (3.5 to 4.0 kgcm) in
the order shown in the illustration above. Make sure the motor ground plate is attached at
the angle shown in the illustration above.
CAUTION:
Tighten the three nuts with the specified torque. If you overtighten these nuts, the
screws on the paper feed motor become loose when you loosen the nuts the next
time.
3-34 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Second Level
Roll Paper Cover Unit
1. Remove one E2 type E retaining ring, and slide the lever shaft to remove the lever button.
E2
Lever shaft
Lever button
2. Remove the lead wires of the BM (black mark) paper detector circuit board assembly from
the roll paper cover unit. When assembling, thread the wires as shown below.
Bend
Pass through
the hole
Rev.C
Hook with the clamp
Disassembly and Assembly 3-35
Confidential
3. Remove the three S1 screws and remove the platen holder.
CAUTION:
When removing the screws near the platen gear, take precautions against
touching the gear with the screwdriver. Do not use a screwdriver with a short
handle and/or thick shaft, as it can easily touch the gear. Touching the gear may
damage it.
Note:
When you need to disassemble or assemble the platen holder further, see page 3-47 for instructions.
4. Remove one E2 type E retaining ring and remove the FEED button.
5. Remove the feed spacer from the FEED button.
S1
E2
Roll paper cover
Feed spacer
FEED button
3-36 Disassembly and Assembly
Double-sided adhesive tape side
Rev.C
Confidential
TM-L90 Service Manual
6. Peel off spacer B.
Spacer B
When assembling, affix the spacer as shown below.
Spacer B
7. Peel off the mini-clamp. When assembling, affix it in the direction shown below.
Mini-clamp
Rev.C
Disassembly and Assembly 3-37
Confidential
8. Remove the two hinge spacers from the roll paper unit. When assembling, make sure you
insert the spacers in the direction shown below.
Hinge spacer
Glossy surface
Glossy surface
Glossy surface
Hinge spacer
Install in the reverse sequence of removal.
3-38 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Autocutter Unit
1. Remove two manual cutter screws
.
2. Remove the manual cutter.
CAUTION:
The manual cutter has a sharp blade. Handle it with care.
3. Remove one manual cutter screw
.
4. Remove the paper cutter cover assembly.
5. Remove one switch screw.
6. Remove the micro switch.
7. Remove the lead wires of the micro switch and the cutter motor from the hooks.
8. Remove the two S9 screws.
Note:
When removing the screws near the paper cutter cover, insert a screwdriver into the gap between the
paper cutter cover and the cutter driving gear. Do not damage the gear.
9. Remove the cutter motor sub assembly.
Note:
When removing the cutter motor sub assembly, pull it out straight so not to catch the cutter motor
gear in the hole in the paper cutter assembly cover.
Manual cutter
Paper cutter cover
assembly
Manual
cutter screw
Manual cutter screw
<Inner side>
Hook
Cutter driving
gear
S9
Cutter motor gear
Switch
screw
Micro switch
Cutter frame assembly
Rev.C
Cutter motor sub assembly
Disassembly and Assembly 3-39
Confidential
Install using the following steps:
Triangle
mark
Cutter driving gear
Manual
cutter
screw
Reduction
A/C gear
Cutter
motor gear
Manual cutter
screws
Manual cutter
Cutter worm
gear
Center of the
contact area between the cutter worm
gear and the paper cutter cover assembly
Long hole in the
movable blade
Paper cutter cover
assembly
S9
Label
face
Movable blade
Cutter motor sub assembly
Round
hole
Cutter frame assembly
1. Install the cutter motor sub assembly. Then, see the drawing to insert it correctly so that the
label side faces the right direction.
2. Tighten the two S9 screws.
3. Install the micro switch. The switch must face the shaft side, and one dowel on the back
must align with the hole in the paper cutter cover assembly.
4. Hold the lead wire of the micro switch to the side of the cutter motor and secure it with the
hook, together with the lead wire from the cutter motor sub assembly.
5. Tighten one switch screw.
6. Lubricate two areas on the long hole in the movable blade in a line-shape with G-15. The
blade is located in the cutter frame assembly.
7. Adjust the position of the movable blade so that the round hole in the cutter frame assembly
is visible through the long hole in the movable blade.
8. Lubricate halfway around the center of the contact area with G-36 between the cutter worm
gear located in the paper cutter cover assembly and the paper cutter cover assembly.
9. Lubricate once around the cutter driving gear, which is located on the paper cutter cover
assembly, with G-36.
10. Lubricate halfway around the cutter motor gear, located on the paper cutter cover assembly,
and the reduction A/C gear, with G-36.
3-40 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
11. Adjust the position of the cutter driving gear so that the triangle mark on the cutter driving
gear becomes visible through the hole in the paper cutter cover assembly.
12. Install the paper cutter cover assembly onto the cutter frame assembly.
CAUTION:
Do not pinch the lead wire between the paper cutter cover assembly and the
cutter frame assembly.
13. Tighten one manual cutter screw at
on the previous page.
14. Install the manual cutter by aligning the two holes in it with the two dowels on the paper
cutter cover assembly.
15. Tighten the two manual cutter screws at
Rev.C
on the previous page.
Disassembly and Assembly 3-41
Confidential
LED Holder and Cover Plate Spring
1. Pull out the LED holder assembly from the label paper holder while pressing both claws
inside.
2. Remove the cover leaf spring.
Label paper holder
LED holder assembly
Lead wire
Cover leaf spring
Install using the following steps:
1. Press in the cover leaf spring into the label paper holder.
2. Install the LED holder assembly. Then, pass the lead wire through first, and then insert the
LED holder assembly into the label paper holder.
3-42 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
NE Detector Assembly
1. Remove the NE detector lead wire from the hook on the label paper holder.
2. Remove one E1 type E retaining ring.
3. Remove the NE detector adjustment screw by rotating it with a coin.
4. Remove the N1 hex nut and the NE detector assembly.
5. Remove the NE detector lead wire from the hook of the NE detector holder, and remove it
from the micro switch connector.
6. Remove the NE detector lever by lightly pressing the two keys inside.
7. Remove one S7 screw.
8. Remove the micro switch.
NE detector adjustment screw
NE detector
lever
N1
E1
Label paper holder
NE detector holder
Micro switch
S7
NE detector lead wire
Rev.C
Disassembly and Assembly 3-43
Confidential
Install using the following steps:
1. Affix insulating tape on the NE detector lead wire as shown in the photo below. (This
process is necessary only if the original NE detector lead wire has insulation tape affixed.)
Insulating tape
2. Install the micro switch by aligning one key with the hole in the NE detector holder and
secure with one S7 screw.
3. Install the NE detector lever by pressing the two keys inside.
4. Connect the NE detector lead wire to the micro switch connector and hook it to the NE
detector holder.
5. Install the NE detector assembly by placing it temporarily, facing the left slanting
diagonally.
6. Fit the N1 hex nut and install the NE detector adjustment screw. Rotate the NE detector
adjustment screw with a coin, until the groove in it comes out of the N1 hex nut.
7. Install one E1 type E retaining ring into one groove in the NE detector adjustment screw.
8. Align the NE detector assembly straight, and further tighten the NE detector adjustment
screw.
9. Hook the NE detector lead wire to the label paper holder.
NE detector assembly
NE detector lead wire
3-44 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Auxiliary Holder Plate and Side Plate Guide Shaft
1. Remove one S10 screw.
2. Disengage both projections located in the lower part of the auxiliary holder plate, and pull
out the auxiliary holder plate downward, at an angle.
3. Remove the eight paper holding rollers.
4. Remove the two E1 type E retaining rings, and pull out the side plate guide shaft.
5. Remove the spacer guide plate while pushing up one front claw of the label paper holder.
Paper holding rollers
Paper holding rollers
Paper holding rollers
S10
Auxiliary holder plate
E1
Side plate
guide shaft
Paper holding
rollers
E1
Label paper holder
Rev.C
Disassembly and Assembly 3-45
Confidential
Install in the reverse sequence of removal.
After you have installed the paper holding rollers, lubricate with G-45 at the 16 points shown
below.
G-45
G-45
G-45
G-45
G-45
G-45
G-45
G-45
G-45
G-45
<Zoom up>
3-46 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Third Level
Platen Holder
1. Remove the fixed blade from the platen holder by raising the blade. When installing the
fixed blade, see the drawing below to check the installation direction.
CAUTION:
The fixed blade is sharp. Handle it with care.
Fixed blade
2. Remove the two tension plate springs.
Tension plate spring
Tension plate spring
Rev.C
Disassembly and Assembly 3-47
Confidential
3. Pull out the lever shaft and remove one E2 type E retaining ring.
Lever shaft
E2
4. Remove the cover open lever.
Cover open lever
5. Remove the lead wire of the BM (black mark) detection set board from the hooks of the
platen holder.
Hooks
3-48 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
6. Remove two S1 screws, and remove the BM detector holder.
BM detector holder
S1
S1
When you assemble the BM detector holder, make sure the shield plate fits into place as
shown below.
OK
NG (This portion of the shield plate goes up slightly.)
7. Pull the lead wire of the BM paper detector circuit board assembly out of the hole in the
platen holder.
Hole
Rev.C
Disassembly and Assembly 3-49
Confidential
8. Remove one S1 screw; then, remove the shield plate.
Shield plate
S1
9. Remove one S1 screw, and remove the BM paper detector circuit board assembly.
BM paper detector
circuit board
assembly
3-50 Disassembly and Assembly
S1
Rev.C
Confidential
TM-L90 Service Manual
10. Remove the fixed blade holder spring by lifting up the claw.
Note:
The claw of the fixed blade holder spring is hooked to the platen holder. When removing it, do not pull
forcibly, as this may result in deformation. When installing it, make sure the claw has been hooked.
Fixed blade holder spring
11. Remove the two E2 type E retaining rings and one paper feed roller shaft holder; then
remove the platen assembly.
Note:
When installing the paper feed roller shaft holder, see the drawing and engage it to the platen holder in
the correct direction.
Platen holder
E2
Paper feed roller shaft holder
E2
Platen assembly
Install in the reverse sequence of removal.
Rev.C
Disassembly and Assembly 3-51
Confidential
Important Note About Installing Thermal Print Head
Please follow these instructions to install the new thermal print head correctly. Note that the
new head has a spacer on it.
1. Cut the plastic sheet with a cutting tool such as a cutter knife. Be sure not to cut the
surrounding parts.
2. Install the new thermal print head in the correct position.
✄
sheet
spacer
3-52 Disassembly and Assembly
Rev.C
Confidential
TM-L90 Service Manual
Chapter 4
Adjustment and Settings
Threshold Value Setting for Detectors
Perform this setting when you have replaced any of the following.
Items Requiring Setting
❏ LED holder assembly
❏ BM paper detector circuit board assembly
❏ Main circuit board unit
Note:
If you do not perform this setting or perform it incorrectly, the printer generates the paper layout error.
See the section, “Error types and Processing,” in Chapter 2 for the description of the error.
Follow the steps below to execute the setting.
1. Install any of the following specified paper rolls for the detector setting.
Original paper or specified paper for detector setting
TF50KS-E (Nippon Paper Industries Co.,Ltd.)
P350 (Kanzaki Specialty Paper (USA))
KF50 (KANZAN Spezialpapiere GmbH (Germany))
Note:
You cannot make an accurate setting if you do not use the specified paper shown above.
2. With the roll paper cover opened, turn the power on while pressing the FEED button.
3. Press the FEED button again eight times.
4. Close the roll paper cover.
5. The printer performs the setting. Once the setting value is printed on the roll paper, the
setting is finished. (The printer power may be turned off automatically, depending on the
DIP switch setting.)
The setting value is stored in NV memory on the main circuit board unit.
Rev.B
Adjustment and Settings 4-1
Confidential
Note:
For details about the settings listed below, see Chapter 6, “Installation.”
❏
❏
❏
❏
❏
Setting for the position of the roll paper near-end detector
Setting for the roll paper cutting method
Roll paper width setting
DIP switch settings
NV memory settings
4-2 Adjustment and Settings
Rev.B
Confidential
TM-L90 Service Manual
Chapter 5
Maintenance, Inspection, Lubrication, and Cleaning
Periodic Maintenance or Inspection
There are no parts in this product that require periodic maintenance or inspection.
Lubrication
There are no parts in this product that require periodic lubrication.
Lubrication is required during disassembly and assembly. Observe the instructions on
lubricants and lubrication points described in Chapter 3, “Disassembly and Assembly.”
The table below lists the lubricants used in this product.
Table 5-1 Lubricants
Type
Name
Grease
G-15
G-36
G-45
Cleaning
Recommended Cleaning
It is recommended that you perform the following cleaning during repair. Observe the
precautions in the front of Chapter 3 before cleaning.
Table 5-2 Recommended cleaning
Rev.B
Checkpoints
Cleaning method
Whether any dust or foreign material adheres to
thermal print head.
See “Cleaning the thermal head” section in this chapter.
Whether any paper dust or foreign material adheres
to LED holder assembly.
Remove the dust or foreign material with a cotton swab
lightly dampened with water.
Whether any paper dust or foreign material adheres
to BM paper detector circuit board assembly.
Remove the dust or foreign material with l a cotton swab
lightly dampened with water.
Whether any paper dust or foreign material adheres
to platen assembly.
Clean the platen with a cotton swab or cloth lightly
dampened with water.
Whether any paper dust or foreign material is present
on the cutter blade.
Wipe off with dry cloth or cotton swab.
Whether any paper dust, dirt, or foreign material
adheres to or is inside other parts.
Clean thoroughly using a small vacuum cleaner for
computer equipment.
Maintenance, Inspection, Lubrication, and Cleaning 5-1
Confidential
Cleaning the Case
Use a dry cloth or lightly dampened cloth to clean the case. Disconnect the power cord from the
wall outlet before doing this.
Avoid using alcohol, benzene, thinner, trichloroethylene, or ketone-based substances to remove
dirt or foreign matter from the printer, because these substances can affect or damage plastic and
rubber parts.
Cleaning the Thermal Head
CAUTION:
❏ Turn off the printer power before cleaning.
❏ Note that the thermal head (thermal element and radiation plate) becomes very
hot during normal operation, creating the danger of burn injury. Be sure to wait for
about 10 minutes after turning printer power off before beginning the cleaning.
1. Open the paper roll cover.
2. Clean the thermal element (the area that looks like it is marked with a thin black line) of the
thermal head with a cotton swab moistened with an alcohol solvent (ethanol, methanol, or
IPA).
CAUTION:
Never touch the thermal element with your hands. Doing so can damage the
thermal elements.
Radiation plate
Head chip
Driver IC
Connector
3. After confirming that the alcohol solvent has dried completely, close the paper roll cover.
5-2 Maintenance, Inspection, Lubrication, and Cleaning
Rev.B
Confidential
TM-L90 Service Manual
Chapter 6
Installation
Installation Precautions
CAUTION:
❏ Do not place the printer in an unstable place (such as on an unsteady base or on a
slanted surface). The unit may fall or drop, and may cause injury.
❏ Do not place the printer in a location where it is exposed to excessive humidity or
dust. It may malfunction or cause fire.
❏ Do not wire cables other than as instructed in this document. Improper wiring may
cause malfunction or fire.
Installation Position
This printer can be installed vertically, horizontally, or mounted on the wall. If you change the
installation position, you also need to set the installation position of the roll paper near-end
detector. (Refer to the section, "Setting the Installation Position of the Roll Paper Near-End
Detector," in this chapter.)
Vertical Installation
Place the printer with the paper exit facing forward.
Rev.B
Installation 6-1
Confidential
Horizontal Installation
Place the printer with the paper exit facing upward. When you install the printer horizontally,
perform the following steps.
1. Attach the switch panel label as shown below.
Switch panel labell
2. If the autocutter is set to full cut, attach the paper outlet guide using the paper outlet tape
(double-sided tape) as shown below.
paper outlet guide
paper outlet tape
paper outlet guide
Note:
If you install the printer horizontally and choose full cut without attaching the paper outlet guide, the cut
paper falls inside the paper path, which can result in double-cuts, a paper jam, or cutter error. However, if
the printer is installed vertically or partial cut is chosen, the paper outlet guide is not necessary.
Wall Mounting
The printer can be attached to the wall by using the wall hanging bracket (WH-10). When you
are going to use the printer by mounting it on a wall, see the installation manual that comes with
the wall hanging bracket.
6-2 Installation
Rev.B
Confidential
TM-L90 Service Manual
Setting the Installation Position for the Roll Paper Near-End Detector
This printer allows you to change the installation position for the roll paper near-end detector
using the following procedure. Set the detector based on whether your printer is installed
vertically or horizontally.
1. Loosen the detector adjustment screw with a coin or similar tool. Turn the screw at least 3 or
4 times.
2. Push the detector lever in until it touches the back of the hole.
3. While pushing the detector lever, turn the tab until the lever clicks into place in the desired
hole.
tab
Hole for vertical installation
or wall mount
Hole for horizontal
installation
Detector
adjuat screw
Detector lever
4. Secure the detector adjustment screw.
5. Make sure the detector lever moves smoothly.
Rev.B
Installation 6-3
Confidential
Adjusting the Detecting Point of the Roll Paper Near-End Detector
Below are two reasons for the roll paper to require an NE detector adjustment.
❏ To adjust the location of detection for the diameter of the roll paper core.
❏ To adjust the amount of remaining paper.
1. Open the roll paper cover, and remove the paper roll.
2. Loosen the detector adjustment screw with a coin or similar tool.
3. Adjust the detector by sliding the tab in the direction shown below.
#2 setting
Detector
adjustment
screw
Tab
#1 setting
Vertical installation
or wall mounting
Horizontal installation
The table below shows the diameter at which the near-end detector is triggered. Note that
this figure is a calculated value, and there may be some variations, depending on the printer.
Table 6-1 Detection point of roll paper near-end
Detector position
Trigger point (diameter of paper roll)
#1 setting
Approx. 36 mm {1.42”}
#2 setting
Approx. 41 mm {1.61”}
4. Tighten the detector adjustment screw.
5. Check to be sure that the detecting lever moves freely.
6. Replace the paper roll.
6-4 Installation
Rev.B
Confidential
TM-L90 Service Manual
Setting the Paper Roll Cutting Method
You can choose between partial cut and full cut by adjusting the autocutter unit to the desired
position. The steps below show the setting of the cutting method.
Note:
❏ Once the printer is used, do not change the cutting method from partial cut to full cut, because of the
difference in the wear rate on the blades between the areas where the paper passes and the paper does
not pass, which can result in a paper-cutting problem. However, if the printer is new, you can change
the cutting method from partial cut to full cut.
❏ If the printer is installed horizontally and full cut is chosen, attach the paper outlet guide. (See page 62.) If it is not attached, the cut paper falls inside the paper path, which can result in double-cuts, a
paper jam, or cutter error.
1. Open the roll paper cover.
2. Remove the cutter cover by spreading area
of the main assembly case, as shown below:
Roll paper cover
S4
Cutter cover
Autocutter
unit
Main assembly case
3. Remove two S4 screws.
Rev.B
Installation 6-5
Confidential
4. Adjust the autocutter unit to the desired position.
To select partial cut: adjust the dowel to the position marked P.
To select full cut: adjust the dowel to the position marked F.
Dowel
5. Secure the autocutter unit with the two S4 screws. Make sure the two dowels on the frame
assembly engage the two slits in the autocutter unit.
•
•
Note:
When tightening the screws, do not deform the frame assembly. This can decrease the sharpness of
the cutter.
Do not tighten the autocutter unit when the dowels are not properly engaged. This can also
decrease the sharpness of the cutter.
6. Install the cutter cover.
7. Close the roll paper cover.
6-6 Installation
Rev.B
Confidential
TM-L90 Service Manual
Setting the Paper Roll Width
The TM-L90 accommodates 80 mm {3.15"} wide paper rolls with no adjustments. For rolls from
38 to 70 mm {1.5 to 2.76"} wide, use the label paper spacer included with the printer.
Note:
Once the printer is used, do not change the paper width from narrow to wide. Otherwise printing
problems and paper-cutting problems may occur. There are two reasons for this restriction, as follows.
❏ The area on the print head where paper does not pass can be worn out, since the platen directly
contacts the head.
❏ The wear rate of the cutter blades is different between the areas where paper passes and does not pass,
which can result in a paper-cutting problem.
However, if the printer is new, you can change the paper width from narrow to wide.
1. When you want to set the roll paper width from 61 mm to 70 mm {2.4 to 2.76"}, break off the
two claws on the spacer shown in the illustration below with your hands.
Claws
2. Open the paper roll cover.
3. Insert the label paper spacer so that the front edge goes through the notch; then push down
the spacer so that the hook on the spacer and the shaft align.
Notch
Front edge
Shaft
Hook
Rev.B
Installation 6-7
Confidential
4. Push the label paper spacer until you feel it click onto the shaft. Check that the label paper
spacer slides smoothly to the left and right.
5. Slide the label paper spacer to the appropriate width. You can use the ruler printed inside
the printer, aligning the inside edge of the spacer with the desired measurement.
Screw
Ruler
6. Tighten the spacer with the screw included with the spacer. (See figure above.)
7. Set the NV memory for the desired paper width.
Attaching the Power Switch Cover
WARNING:
If an accident occurs when the power switch cover is attached, unplug the power
supply cord from the outlet immediately. Continued usage may lead to fire or shock.
You can use the power switch cover to make sure the power switch is not accidentally pressed.
Peel off the paper on the back of the power switch cover, and attach it as shown in the
illustration.
6-8 Installation
Rev.B
Confidential
TM-L90 Service Manual
For removal, use a sharp-edged object.
Power switch cover
If you want to turn on or off the power switch with the cover attached insert a sharp edged
object into the hole in the power switch cover, and remove portion
in the above illustration.
Setting the DIP Switches
Location of the DIP switches
A single set of DIP switches is located in the area shown below. To access the DIP switches,
remove the DIP switch cover.
DIP switches
DIP switch cover
Note: About the DIP switch on the main circuit board
When disassembling and assembling the printer, you may notice a DIP switch on the main circuit board.
This switch is used only at the factory. Always set this switch to OFF.
Rev.B
Installation 6-9
Confidential
DIP switch settings
For serial interface models
Table 6-2 DIP switch settings for serial interface models
Switch number
Function
ON
OFF
1
Power switch function
Disabled
Enabled
2
Setting for serial communication
conditions
To be specified with DIP
switches.
To be specified with NV
memory.
3
Handshake
XON/XOFF
DTR/DSR
4
Bit length
7 bits
8 bits
5
Parity check
Yes
No
6
Parity selection
Even
Odd
7
Baud rate selection
See the next table.
8
Table 6-3 Baud rate selection
Transmission speed
Switch number
[ bps ]
7
8
2400
ON
ON
4800
OFF
ON
9600
ON
OFF
19200
OFF
OFF
bps: bits per second
Note: About the setting for serial communication conditions.
When DIP switch 2 is “ON”, you can set for serial communication conditions by the DIP switch.
In case of OFF, it doesn’t enables to set by the DIP switch, but by the memory switch. Then you
need to run the Memory Switch Setting Mode.
For non-serial interface models
Table 6-4 DIP switch settings for non-serial interface models
Switch number
Function
ON
OFF
1
Power switch function
Disabled
Enabled
2
Reserved
-
Fixed to off
3
Reserved
-
Fixed to off
4
Reserved
-
Fixed to off
5
Reserved
-
Fixed to off
6-10 Installation
Rev.B
Confidential
Rev.B
TM-L90 Service Manual
Switch number
Function
ON
OFF
6
Reserved
-
Fixed to off
7
Reserved
-
Fixed to off
8
Reserved
-
Fixed to off
Installation 6-11
Confidential
Connecting Cables
WARNING:
Make sure you use the EPSON PS-170 or PS-180 power supply. Using an incorrect power
supply may cause fire or electrical shock.
CAUTION:
When connecting or disconnecting the power supply from the printer, make sure the
power supply is not plugged into an electrical outlet. Otherwise you may damage the
power supply or the printer.
Note:
To remove the DC cable connector, make sure the power supply's power cord is unplugged; then grasp the
connector at the arrow and pull it straight out.
Power source connector
Interface connector
Drawer kick-out connector
6-12 Installation
Rev.B
Confidential
TM-L90 Service Manual
Setting the NV Memory
The functions shown below are assigned to the memory system used with this printer.
NV memory
Customized values
Memory switches
• Select NV user memory capacity
• Select NV graphics memory capacity
• Select paper width
• Select number of division for head energizing
• Select print density
• Select paper type (mono or color)
• Select print speed
• MSW1
• MSW2
• MSW8
Serial communication
conditions
• Baud rate
• Data length
• Parity
• Flow control
Paper layout
Type of paper / size
Normally, you set the NV memory using the ESC/POS command. However, some functions can
be set using either the Memory Switch Setting Mode or the Paper Layout Automatic Setting
Mode on the printer itself, as described below.
Memory Switch Setting Mode
The functions listed below can be set using the Memory Switch Setting Mode.
Table 6-5 Setup items in the memory switch setting mode
Rev.B
Items
Description
Autocutter
Enables or disables the autocutter operation
Paper / Print density
• Selects paper type (mono or color)
• Selects print density
Basic serial interface
settings
Sets the baud rate, data length, flow control, parity
Advanced interface
settings
Sets the receive buffer capacity, data processing for receiving error,
conditions for busy
Interface reset signal
Sets if the reset signal on the interface connector is used or not used
Paper width
Sets paper width
Installation 6-13
Confidential
Follow the steps below to run the Memory Switch Setting Mode.
1. Install a paper roll.
2. With the roll paper cover opened, turn the power on while pressing the FEED button. And
You need to hold down the paper FEED button continuously until the ERROR LED lights
on; release the paper FEED button once when the ERROR LED light on.
3. Press the paper FEED button (located inside the printer) twice.
4. Close the roll paper cover. The printer prints the main menu and operation instructions.
5. Follow the instructions for further operation to set the memory switches.
6. Once the setting is finished, the printer initializes and enters the normal state.
Paper Layout Automatic Setting Mode
Follow the steps below to run the Paper Layout Automatic Setting Mode.
1. Install the paper roll you want to use.
2. With the roll paper cover opened, turn the power on while pressing the FEED button.
3. Press the FEED button again six times.
4. Close the roll paper cover. The printer runs the Paper Layout Automatic Setting Mode.
During the mode, the printer checks the necessary information for the paper installed and
stores it in the NV memory.
Memory Switches
MSW1
Table 6-6 Memory switch MSW1
Bit
Function
0 (off)
1 (on)
1
Send power on notification
No
Yes
2
Capacity of the receive buffer
4KB
45B
3
Conditions for BUSY
Receive buffer full or
offline
Receive buffer full
4
Data processing for receiving
error
Prints '?'
Ignores
5
Automatic line feed
Disabled
Enabled
6
Reserved
Fixed to off
---
7
Pin #6: selection of reset signal
Not used
Used
8
Pin #25: selection of reset signal
Not used
Used
6-14 Installation
Rev.B
Confidential
TM-L90 Service Manual
MSW2
Table 6-7 Memory switch MSW2
Bit
Function
0 (off)
1 (on)
1
Reserved
---
Fixed to on
2
Autocutter operation
Disabled
Enabled
3
Undefined
---
---
4
Undefined
---
---
5
Undefined
---
---
6
Undefined
---
---
7
Undefined
---
---
8
Undefined
---
---
MSW8
Table 6-8 Memory switch MSW8
Rev.B
Bit
Function
0 (off)
1 (on)
1
Undefined
---
---
2
Undefined
---
---
3
Undefined
---
---
4
Undefined
---
---
5
Undefined
---
---
6
Feeding paper to the start
position during power on
Enabled
Disabled
7
Undefined
---
---
8
Select the type of error when
the roll paper cover is opened
while printing
Generate an
automatically
recoverable error
Generate an error
recoverable by ESC/
POS command
Installation 6-15
Confidential
Customized Values
Table 6-9 Customized values
Function
Selection
Select NV user memory
capacity
1KB 64KB 128KB 192KB
Select NV bit image
memory capacity
None 64KB 128KB 192KB 256KB 320KB 384KB
Select paper width
38 mm
39 mm
•
•
•
80 mm (43 steps in increment of 1 mm, except for the size
from 71 mm to 79 mm)
Select number of division
for head energizing
Undivided energizing
Two-part energizing
Three-part energizing
Four-part energizing
Select print density
× 0.7, × 0.75, × 0.8, × 0.85, × 0.9, × 0.95, × 1.0,
× 1.05, × 1.1, × 1.15, × 1.2, × 1.25, × 1.3, × 1.35, × 1.4
Select paper type (mono
or color)
Single color
Two colors
Select print speed
Print speed level 1
•
•
•
Print speed level 9
Serial Communication Conditions
Table 6-10 Serial communication conditions
Function
Selection
Baud rate
2400 bps, 4800 bps, 9600 bps, 19200 bps,
38400 bps, 57600 bps, 115200 bps
Parity
None
Odd
Even
Flow control
DTR/DSR control
XON/XOFF control
Data length
7 bits, 8 bits
6-16 Installation
Rev.B
Confidential
TM-L90 Service Manual
Chapter 7
Handling
Safety Precautions
WARNING:
❏ Shut down your equipment immediately if it produces smoke, a strange odor, or
unusual noise. Continued use may lead to fire or electric shock. Immediately unplug
the equipment.
❏ Only disassemble this product as described in this manual. Do not make
modifications to the unit. Tampering with this product may result in injury, fire, or
electric shock.
❏ Be sure to use the specified power source. Connection to an improper power source
may cause fire or shock.
❏ Never insert or disconnect the power plug with wet hands. Doing so may result in
severe shock.
❏ Do not allow foreign objects to fall into the equipment. Penetration by foreign
objects may lead to fire or shock.
❏ If water or another liquid spills into this equipment, unplug the power cord
immediately. Continued usage may lead to fire or shock.
❏ Do not place multiple loads on the power outlet (wall outlet). Overloading the outlet
may lead to fire.
❏ Always supply power directly from a standard domestic power outlet.
❏ Handle the power cord with care. Improper handling may lead to fire or shock.
Rev.B
•
Do not modify or attempt to repair the cord.
•
Do not place any object on top of the cord.
•
Avoid excessive bending, twisting, and pulling.
•
Do not place cord near heating equipment.
•
Check that the plug is clean before plugging it in.
•
Be sure to push the prongs all the way in.
Handling 7-1
Confidential
CAUTION:
❏ Do not connect cables other than as described in this manual. Different connections
may cause equipment damage and burning.
❏ Be sure to set this equipment on a firm, stable, flat surface. Product may break or
cause injury if it falls.
❏ Do not use in locations subject to high humidity or dust levels. Excessive humidity and
dust may cause equipment damage, fire, or shock.
❏ Do not place heavy objects on top of this product. Never stand or lean on this
product. Equipment may fall or collapse, causing breakage and possible injury.
❏ To ensure safety, please unplug this product prior to leaving it unused for an
extended period.
❏ Be aware that the thermal print head and its supporting parts become very hot. Be
sure not to touch these parts. Touching them may cause burns.
Precautions on Handling the Printer
Observing the following operational precautions protects the unit against damage.
CAUTION:
❏ Do not turn off the printer while the autocutter is working. Doing so leaves the cutter
blade exposed, which prevents the roll paper cover from opening.
❏ Do not pull out paper when the roll paper cover is closed.
❏ Except for a paper jam, do not turn the autocutter knob when the cutter cover is
open. Turning it accidentally may expose the cutter blade, which prevents the roll
paper cover from opening.
❏ The heating element of the printer mechanism's thermal head and the driver IC are
easily damaged. Never allow these components to come into contact with metal or
other hard objects.
❏ Never touch the printer mechanism's (thermal head's) heating elements with your
hands. Doing so can contaminate the heating elements and affect proper
operation.
❏ Do not open the roll paper cover during printing. The printer mechanism may fail.
7-2 Handling
Rev.B
Confidential
TM-L90 Service Manual
Precautions on Paper Handling
CAUTION:
❏ Thermal paper containing Na, K, or CL ions, etc., can adversely affect the heating
elements of the thermal head. Be sure to use thermal paper that meets the paper
specifications described in Appendix A, “General Specifications.”
❏ Thermal paper starts to color at around 70°C {158°F}. Take care to protect unused
and printed thermal paper against the effects of heat, light, and humidity, which
can cause the paper to color and characters on the paper to fade.
❏ Take the roll paper out of the printer when you will not use the printer for a long time
in an environment of high temperatures and humidity.
❏ When the printer is not used for one week or more, it is recomended not to leave the thermal
paper between the platen and the print head.
Part Names
Power switch
Cutter cover
Cover open lever
Control panel
Roll paper cover
Table 7-1 Part names and functions
Rev.B
Name
Function
Roll paper cover
Open to insert or remove roll paper.
Cutter cover
Remove when the roll paper cover does not open. Do not open
this normally.
Power switch
Turns on or off power.
Cover open lever
Used to open the roll paper cover.
Control panel
Includes LEDs for showing the printer status and a button for
feeding paper. See the next illustration for details.
Handling 7-3
Confidential
LEDs and Button
Table 7-2 LEDs and button
Name
Function
POWER LED
Lights when the power is on, and is off when the power is off.
ERROR LED
Off when the printer is online, lights when the printer is offline, and
flashes when an error occurs.
PAPER OUT LED
Lights when roll paper is nearly out.
FEED Button
Feeds the roll paper.
Handling
Powering the unit ON or OFF
There are two methods to power this printer ON or OFF:
❏ Using the power switch
❏ With the power switch disabled
Each method is used for the following purposes:
Table 7-3 Purpose of each method of power ON/OFF
Method
Description
Power ON/OFF using
the power switch
To power the printer ON or OFF using the power switch
Power ON/OFF with the
power switch disabled
To power the printer ON or OFF using the power breaker where the printer is installed or
using the switch on the power box or wall outlet where the printer is connected.
In this case, the program must execute the power off process using the DLE DC4 (fn=2)
command before turning the printer power off.
7-4 Handling
Rev.B
Confidential
TM-L90 Service Manual
These methods can be selected by DIP switch 1.
Table 7-4 Setting of DIP switch 1
Method
DIP switch 1
Power ON/OFF using the power switch
OFF
Power ON/OFF with the power switch disabled
ON
The explanations below show how to power the unit ON or OFF by each method.
Power ON/OFF method using the power switch
Power ON:
Press the power switch.
Power OFF:
Hold down the power switch for more than 3 seconds.
Power ON/OFF method with disabling the power switch
Power ON:
Turn ON the power breaker at the store where the printer is installed,
or turn ON the switch on the power box or wall outlet where the
printer is connected.
Power OFF:
1. Execute the power off process using the DLE DC4 (fn=2)
command.
2. Make sure the POWER LED starts flashing.
3. Turn off the power breaker or the switch on the power box or
wall outlet.
Rev.B
Handling 7-5
Confidential
Loading the paper roll
CAUTION:
❏ The manual cutter blade is sharp. Do not touch it with your hands when mounting or
replacing roll paper, because you can be injured.
❏ Be aware that the thermal print head and its supporting parts become very hot. Be
sure not to touch these parts. Touching them may cause burns.
Note:
Be sure to use paper rolls that meet the specifications. Do not use paper rolls that have the paper glued to
the core, because the printer cannot detect the paper end correctly.
1. Make sure the printer is not receiving data; otherwise, it may be lost. Open the paper roll
cover by pressing the cover-open button.
2. Load the roll paper inside the printer in the correct direction.
Horizontal installation
7-6 Handling
Vertical installation
Rev.B
Confidential
TM-L90 Service Manual
3. Pull out a small amount of roll paper.
4. Then close the paper roll cover.
Horizontal installation
Vertical installation
5. Tear off the paper as shown.
Removing the roll paper
Open the roll paper cover, and remove the used paper roll core if there is one.
Rev.B
Handling 7-7
Confidential
TM-L90 Service Manual
Appendix A
General Specifications
Printing Specifications
Printing method:
Thermal line printing
Dot density:
203 dpi × 203 dpi [dpi: dots per 25.4 mm (dots per inch)]
Paper Specifications
Paper type:
Specified thermal roll paper
The following paper can be used:
• Receipt paper (without black mark)
• Receipt paper (with black mark)
• Label paper (without black mark)
• Label paper (with black mark)
Refer to page 6-13 “Paper Layout Automatic setting mode“
Form:
Paper roll
Paper width:
79.5 ± 0.5 mm {3.13 ± 0.02"} (for 80 mm {3.15"} paper width)
59.5 ± 0.5 mm {2.34 ± 0.02"} (for 60 mm {2.36"} paper width)
37.5 ± 0.5 mm {1.48 ± 0.02"} (for 38 mm {1.5"} paper width)
Rev.B
General Specifications Appendix A-1
Confidential
Paper Specifications
Specified roll
paper:
Roll Width
80mm {3.15"}
60 mm {2.36"}
38mm {1.5"}
Original
paper
Monochrome thermal
roll paper
ENTPD080090
---
---
TF60KS-E
Monochrome thermal
roll paper (thickness type)
ENTPE080090
---
---
TF11KS-ET
Two-color thermal roll
paper
ENTPC080090
---
---
PD750R
Label stock
Monocrome
label paper
stock
Two-color
label paper
stock
Length
of label
Label Width
80 mm {3.15"}
60 mm {2.36"}
38mm {1.5"}
---
25 mm (1")
ENTLA080090
025
ENTLA060090
025
ENTLA038090
025
---
51 mm (2")
ENTLA080090
051
ENTLA0600900
51
---
---
76 mm (3")
ENTLA080090
076
ENTLA060090
076
---
---
102 mm (4")
ENTLA080090
102
ENTLA060090
102
---
---
25 mm (1")
ENTLA080090
025
ENTLA060090
025
ENTLA038090
025
---
51 mm (2")
ENTLA080090
051
ENTLA060090
051
---
---
76 mm (3")
ENTLA080090
076
ENTLA060090
076
---
---
102 mm (4")
ENTLA080090
102
ENTLA060090
102
---
---
Note:
To ensure the print quality, be sure to use the specified paper.
Appendix A-2 General Specifications
Rev.B
Confidential
Specified original paper:
TM-L90 Service Manual
The following original paper types can be used.
Monochrome thermal paper
TF60KS-E (Paper thickness 75 µm) (Nippon Paper Industries Co., Ltd.)
TF11KS-ET (Paper thickness 145 µm) (Nippon Paper Industries Co., Ltd.)
TF50KS-E (Paper thickness 65 µm)(Nippon Paper Industries Co., Ltd.)
PD160R (Paper thickness 75 µm) (Oji paper Mfg. Co., Ltd.)
P350 (Paper thickness 62 µm) (Kanzaki Specialty Paper (USA))
KF50 (Paper thickness 62 µm) ( KANZAN Spezialpapiere GmbH
(Germany))
Two-color thermal paper
PD750R (Paper thickness 75 µm) (Oji paper Mfg. Co., Ltd.)
Paper roll size:
Paper roll core:
Roll diameter: Maximum 90 mm {3.54"}
Take-up paper roll width: 80, 60, 38 mm {3.15, 2.36, 1.5"} with
+0.5/-1.0 mm {+0.02/-0.04"} of tolerance
Inside diameter: 25.4 mm {1"}
Out side diameter: 31.4 mm {1.24"}
Paper must not be pasted to the paper roll core.
Rev.B
General Specifications Appendix A-3
Confidential
Autocutter
Either of the following settings can be applied.
Table A-1 Autocutter settings
Setting
Description
Partial cut (cutting with one point in left
edge left uncut)
Set by changing the autocutter
unit position.
Full cut (completely cut)
Note:
❏ Once the printer is used, do not change the cutting method from partial cut to full cut, since the wear
rate on the blades differs between the areas where the paper passes and where the paper does not, which
can result in a paper-cutting problem. However, if the printer is new, you can change the cutting
method from partial cut to full cut.
❏ If the printer is installed horizontally and the full cut is chosen, attach the paper outlet guide. (Refer to
Chapter 6.) If it is not attached, the cut paper falls inside the paper path, which can result in doublecutting, a paper jam, or cutter error.
Appendix A-4 General Specifications
Rev.B
Confidential
TM-L90 Service Manual
Paper Roll Supply Device
Supply method:
Drop-in paper roll
Near-end detector
Detection method:
Micro switch
Paper roll core
diameter:
Inside: 25.4 mm {1"}, Outside: 31.4 mm {1.24"}
Near-end adjustment:
Adjusting screw
Fixed position #1 (diameter: approximately 36 mm {1.42"}),
#2 (diameter: approximately 41 mm {1.61"})
Paper width selection:
80 mm {3.15"} (default setting)
38 mm or 60 mm {1.5 or 2.36"} paper width can be selected
using the label paper spacer packed in the box.
(By adjusting the label paper spacer, it is also possible to
set optional positions in the range of 38 mm to 70 mm {1.5
to 2.76"}.
When you attach the label paper spacer, you must also
specify the paper width setting in the NV memory to
match the print areas.
Note:
Once the printer is used, do not change the paper width from narrow to wide. Otherwise, printing
problems and paper-cutting problems may occur. There are two reasons for this restriction, as the follows.
❏ The area on the print head where the paper does not pass can be worn out, since the platen directly
contacts the head.
❏ The wear rate on the cutter blades differs between the areas where the paper passes and does not,
which can result in paper-cutting problems.
However, if the printer is new, you can change the paper width from narrow to wide.
Rev.B
General Specifications Appendix A-5
Confidential
Electrical Specifications
Operating voltage:
+24 VDC ± 7% (optional power supply: EPSON PS-170
or PS-180)
Pin assignments for the power
connector:
2
3 1
Table A-2 Pin assignment for the power connector
Pin #
Function
1
+24V
2
GND
3
N.C.
SHELL
F.G.
Dimensions and Mass
Height:
Approx. 203 mm {7.99"}
Width:
Approx. 140 mm {5.51"}
Depth:
Approx. 148 mm {5.83"}
Weight:
Approx. 1.9 kg {4.19 lb} (not including paper)
Appendix A-6 General Specifications
Rev.B
Confidential
TM-L90 Service Manual
Environmental Conditions
Temperature:
Operating:
5 ∼ 45°C {23-113°F} (See the figure below.)
Storage:
-10 ∼ 50°C {14-122°F} (except for paper)
Humidity:
Operating:
10 ∼ 90% RH (See the figure below.)
Storage:
10 ∼ 90% RH (except for paper)
[%RH]
90
34°C, 90%
80
40°C, 65%
60
Operating
environment range
Relative humidity
45°C, 50%
40
20
10
0
0
10
20
30
40
50
Ambient temperature [°C]
Rev.B
General Specifications Appendix A-7
Confidential
Drawer Kick-out Connector
Pin assignments
Table A-3 Drawer kick-out connector pin assignments
Pin Number
Signal Name
Direction
1
Frame GND
—
2
Drawer kick-out drive signal 1
Output
3
Drawer open/close signal
Input
4
+24 V
—
5
Drawer kick-out drive signal 2
Output
6
Signal GND
—
1
6
+24V is always output through pin 4 during power on.
Interfaces
Various interface boards (EPSON UB series, except for the UB-P02) can be used.
Buttons and Switches
Power switch
The power switch (non-locking, push switch) on the right part of the front face of the unit turns
the printer on or off.
You can use the DIP switches to enable or disable the power switch.
Panel Button
Feed (FEED) button:
Type:
Non-locking push button
Function:
Feeds paper. The paper cannot be fed if:
(1) roll paper end detector detects no paper.
(2) cover is open.
Note:
The ESC c 5 command enables or disables the panel button. When disabled, the button will not function.
Appendix A-8 General Specifications
Rev.B
Confidential
TM-L90 Service Manual
DIP Switches and NV Memory
For explanations of the DIP switches and the NV memory, see Chapter 6, “Installation.”
Indicators
Panel LEDs
Power (POWER) LED: Green
ON:
Power is stable.
OFF:
Power is not stable.
Paper roll end (PAPER OUT) LED: Red
On:
The paper roll near end or real end is detected.
Off:
Paper is loaded (normal condition)
Blinking:
Waiting for the self-test print to continue. Or, it is waiting for
the macro execution command.
Table A-4 PAPER OUT LED blinking pattern
State
PAPER OUT LED Blinking Pattern
Recovery Conditions
Waiting for self-test printing to
continue or macro execution
ready state.
PAPER OUT
Pressing the PAPER FEED button
continues self-test printing or
executes a macro.
Approx. 320 ms
Error (ERROR) LED: Red
On:
Offline (except during paper feeding using the FEED button,
self-test printing, and the error state)
Blinking:
Error (See the section “Error types and processing” in Chapter 2.)
Off:
Normal condition.
Rev.B
General Specifications Appendix A-9
Confidential
Appendix A-10 General Specifications
Rev.B
Confidential
TM-L90 Service Manual
Appendix B
Overview of the Mechanisms
This printer consists of the next four units:
❏ Cover unit
❏ Print/paper feed unit
❏ Paper supply unit
❏ Autocutter unit
The illustration below shows an external view of the printer mechanism:
Cover unit
Autocutter unit
aper supply unit
Print/paper feed unit
Rev.B
Overview of the Mechanisms Appendix B-1
Confidential
Cover Unit
The cover unit is installed onto the paper supply unit by a hinge, and it makes a rotational
movement.
Attached to the platen holder of the cover unit are the paper feed roller shaft holder, platen,
cover open lever, lever shaft, lever button, fixed blade, and reflective photo detector. The
reflective photo detector is able to detect the black mark on the non-printing surface of the
paper.
Platen holder
Reflective photo detector
Hinge
Paper feed roller
shaft holder
Platen
Cover open lever
Fixed blade
Lever shaft
Paper feed roller shaft holder
Lever button
When an operator closes the cover unit, the cover open lever is engaged by the protrusions on
the print/paper feed unit and the cover unit is locked to the print/paper feed unit.
At this time, the paper feed roller shaft holder hits the locators on the right and the left frames of
the print/paper feed unit, and the platen is secured into place. The platen gear attached to the
lever shaft is engaged with the reduction gear on the print/paper feed unit, and can rotate the
platen.
A proper load is applied to the cover unit by the leaf spring on the paper supply unit. When an
operator manipulates the lever button while the cover unit is closed, the lock between the cover
open lever and the print/paper feed unit is released, and the cover unit opens slightly. Then the
cover unit can be fully opened by the operator.
Although the cover open lever and the lever button are installed onto a single lever shaft, they
can move individually, allowing the cover unit to be closed without manipulating the lever
button.
Appendix B-2 Overview of the Mechanisms
Rev.B
Confidential
TM-L90 Service Manual
Print/Paper Feed Unit
The print/paper feed unit consists of various frames, thermal print head, head holder
mechanism, paper feed motor, reduction gear, and cover open detector.
Thermal print head
Head holder mechanism
Platen shaft holder locator
Cover open detector
Frame R
Reduction gears
Paper feed motor
Circuit board frame
Frame L assembly
The right and the left frames supporting the thermal print head can be installed or removed
together with the paper supply unit, and provide the locator for the paper feed roller shaft
holder.
The circuit board frame holds the main circuit board that controls the printer mechanism.
The cover open detector detects if the cover unit is closed or open.
Rotating the paper feed motor when the cover unit is closed drives the reduction gear to rotate
the platen. Thermal paper is fed, if it is rolled up on the platen.
With the thermal paper pinched between the platen and the thermal print head, the printing is
performed by heat generation in the heating element of the thermal print head.
Rev.B
Overview of the Mechanisms Appendix B-3
Confidential
Thermal Print Head
The thermal print head consists of a head chip that includes the heating element, a driver IC that
controls each dot of the heating element, a thermistor that detects the temperature of the thermal
print head, radiation plate, and connector.
Radiation plate
Head chip
Driver IC
Connector
Principles of Thermal Printing
When the print signal energizes a corresponding dot of the heating element with the specified
pulse, the dot heats up to a high temperature, and dissolves the color-forming ingredient of the
color-forming layer on the thermal paper that is contacting the dot. When the transparent colorforming layer is dissolved at room temperature, it generates color. When the temperature cools
down, it is fixed again to the thermal paper side, thus forming printing.
The color can be set to various colors by changing the formulation of chemicals used for the
color-forming layer, but the popular thermal paper is the one that forms the color black.
Depending on the paper type, environment, and printing conditions, part of the dissolved colorforming layer may be deposited on the thermal printer head side. In this case, you need to clean
the heat-generating element of the thermal print head.
Data Input and Printing
Serial print data input from DATA IN synchronizes with the CLOCK signal, and is transmitted
to the SHIFT REGISTER within the driver IC. It is then recorded to the LATCH REGISTER
within the driver IC on the LATCH signal timing, turns on the gate with the STROBE signal, and
energizes the heating element.
The STROBE signal (energizing pulse width) is set properly, depending on the voltage,
thermistor-detected temperature, and print speed, to obtain the optimum print density. There
are two terminals for STROBE, which can be driven with up to two parts by hardware. Normal
printing performs one-part printing for printing speed, and two-part printing for high-duty
printing, which causes a high-voltage drop.
Appendix B-4 Overview of the Mechanisms
Rev.B
Confidential
TM-L90 Service Manual
Paper Supply Unit
The paper supply unit consists of the label holder, paper detection LED, NE detector, and hinge
cover.
Switch circuit board (inside)
Label guide
LEDs
DIP switch
Feed switch
Hinge cover
Label holder
Guide rollers
NE detector
Paper detection LED
The label guide is attached to the label holder and interlocks with the cover unit. This allows the
TM-L90 to receive paper roll in the correct position, whether the unit is installed vertically or
horizontally. The guide rollers that receive the paper roll ease the load that occurs during paper
feed, improve the paper-feed pitch accuracy, and ease the maximum load applied to the paper
feed motor.
The paper detection LED works with the reflective photo detector on the platen holder and
detects the several types of paper. The paper detection LED is covered by a transparent resin to
prevent the detector from being destroyed by static. The NE detector detects the remaining
amount of roll paper. It can be set to perform detection at two points, depending on the setting.
This detector can be rotated by loosening it with a coin, and allows detection whether the
TM-L90 is installed vertically or horizontally.
The switch circuit board is installed onto the hinge cover, and the printer settings can be
configured with the DIP switches or FEED button, even when the cover is open. The printer
status is shown with LEDs.
Rev.B
Overview of the Mechanisms Appendix B-5
Confidential
Changing the paper width
The unit can handle paper roll widths of 38 mm to 70 mm {1.5 to 2.76"}, when you install a paper
spacer into the label holder.
Appearance of
paper spacer
Paper spacer is attached to
the label holder (example)
Autocutter Unit
The autocutter unit is installed into the print/paper feed unit, and consists of a movable blade,
cutter sub-assembly motor, movable blade position detector, power transmission mechanism,
and frame.
Movable blade position detector
Cutter sub-assembly motor
Power transmission mechanism
Manual cutter
Knob
Movable blade
The autocutter unit’s movable blade and the fixed blade attached to the cover unit cross each
other, and cut paper with the principle of scissors.
Appendix B-6 Overview of the Mechanisms
Rev.B
Confidential
TM-L90 Service Manual
Opening the cover unit separates the two blades. Closing the cover unit while the movable blade
is in the standby position makes the fixed blade hit the frame portion of the autocutter unit, and
is set to the correct position against the movable blade.
The movable blade is always in the standby position, and is moved to the intersecting direction
against the fixed blade by various gears. If paper is present, it is cut between the movable and
the fixed blades. Then, the movable blade returns to the standby position.
The movable blade position detector detects if the movable blade is in the standby position or
not.
The power transmission mechanism is equipped with a one-way clutch that cuts power
transmission when the movable blade catches on foreign material or something.
Full cut and partial cut
The paper cutting can be set to either of two methods (full-cut and partial-cut) by changing the
autocutter installation position on the print/paper feed unit.
Manual cut
You can also use the manual cutter to cut paper manually.
Rev.B
Overview of the Mechanisms Appendix B-7
Confidential
TM-L90 Service Manual
Appendix C
Tools
Table C-1 Tools
Tool
Specifications
Purpose
Source
Torque-limiting hexagon box driver
Tip size: 5 mm
Remove and install the paper
feed motor
Use commercially
available product.
The tightening
torque for the nut
should be
between 34.3 to
39.2 Ncm (3.5 to
4.0 kgcm).
Rev.B
Crosshead screwdriver
No. 0, 1, 2
Disassembly and assembly
Use commercially
available product.
Flathead screwdriver
—
Disassembly and assembly
Use commercially
available product.
Tweezers
—
Disassembly and assembly
Use commercially
available product.
Wrist strap
(static electricity countermeasure)
—
Disassembly and assembly
Use commercially
available product.
E-ring holder
1.5, 3
Disassembly and assembly
Use commercially
available product.
Tools Appendix C-1
Confidential
TM-L90 Service Manual
Appendix D
Parts List
Alphanumeric List
Table D-1 Alphanumeric list
Rev.C
Name for service manual
Name for price list
Q’ty
Ref.#
Autocutter unit
AUTO CUTTER UNIT
1
162
Auxiliary holder plate
PLATE,HOLDER AUXILIARY
1
169
BM detector holder
HOLDER,BM DETECTOR
1
112
BM paper detector circuit board
assembly
CIRCUIT BOARD,BM PAPER DETECTOR
ASSEMBLY
1
213
Bottom plate
PLATE,LOWER
1
165
Caution seal
SEAL,CAUTION,C
1
106
Center frame
FRAME,CENTER
1
119
Circuit board frame
FRAME CIRCUIT BOARD,A
1
111
Connector cover
COVER,CONNECTOR,AA
1
141
Cover detector assembly
COVER,DETECTOR ASSEMBLY
1
166
Cover leaf spring
PLATE SPRING,COVER
1
124
Cover open lever
LEVER,COVER OPEN
1
128
Cover rotation shaft
SHAFT,COVER TURNING
2
133
Cover tape
TAPE,COVER
1
160
Cutter cover
COVER,CUTTER,AA
1
139
Cutter frame assembly
FRAME,CUTTER ASSEMBLY
1
149
Cutter motor sub-assembly
MOTOR,CUTTER SUB ASSEMBLY
1
151
NE detector adjustment screw
SCREW,DETECTOR ADJUSTMENT, N.E.
1
101
DIP switch cover
COVER,DIP SWITCH
1
154
E-ring (E1)
RETAINING RING
—
E1
E-ring (E2)
RETAINING RING
—
E2
FEED button
BUTTON,FEED,AA
1
131
Feed sheet
SHEET,FEED,A
1
135
Feed spacer
SPACER,FEED
1
132
Ferrite core
FERRITE CORE
1
211
Fixed blade
FIXED BLADE
1
114
Fixed blade holder spring
SPRING,BLADE HOLDER
1
104
Frame L assembly
FRAME,L ASSEMBLY,A
1
142
Note
Accessory
Parts List Appendix D-3
Confidential
Table D-1 Alphanumeric list
Name for service manual
Name for price list
Q’ty
Ref.#
Frame R
FRAME,R
1
107
Frame strengthening plate L
PLATE,FRAME STRENGTHEN,L
1
110
Frame strengthening plate R
PLATE,FRAME STRENGTHEN,R
1
109
Front frame
FRAME,FRONT
1
108
Handling label
LABEL,OPERATION,BA
1
155
Head caution seal
SEAL,CAUTION,HEAD B
1
103
Head FFC
FFC,HEAD
1
207
Head holder spring
SPRING,HEAD HOLDER
2
125
Hinge cover
COVER,ARM,AA
1
127
Hinge spacer
SPACER,HINGE
2
172
I/F circuit board unit
I/F CIRCUIT BOARD UNIT
1
202
Label paper guide
GUIDE,LABEL
1
126
Label paper holder
HOLDER,LABEL
1
120
Label paper platen holder
HOLDER,LABEL PLATEN
1
156
Label paper spacer
SPACER,LABEL
1
173
LED holder assembly
HOLDER,LED ASSEMBLY
1
121
Lever button
BUTTON,LEVER,AA
1
130
Lever shaft
SHAFT,LEVER
1
129
Logo plate
LOGO PLATE,AB
1
102
Main case assembly
CASE,MAIN ASSEMBLY,AA
1
136
Main circuit board unit
MAIN CIRCUIT BOARD UNIT
1
201
Manual cutter
MANUAL CUTTER
1
167
Manual cutter screw
SCREW,MANUAL CUTTER
3
148
Micro switch
MICRO-SWITCH
1
146
Mini-clamp
MINI CLAMP
1
179
Motor ground plate
GROUND PLATE,MOTOR
1
118
NE detector holder
HOLDER,N.E.DETECTOR
1
145
NE detector lead wire
LEAD WIRE,N.E.DETECTOR
1
206
NE detector lever
LEVER,N.E.DETECTOR
1
144
Nut (N1)
HEXAGON NUT
-
N1
Paper cutter cover assembly
COVER,PAPER CUTTER ASSEMBLY,B
1
150
Paper feed motor
MOTOR,PAPER FEED,B
1
205
Paper feed motor damper
DAMPER,PAPER FEED MOTOR
3
117
Paper feed roller shaft holder
SHAFT HOLDER,PAPER FEED ROLLER
1
164
Paper holding roller
ROLLER,PAPER HOLD
8
122
Paper outlet guide
GUIDE,PAPER OUTLET,AA
1
174
Appendix D-4 Parts List
Note
Accessory
Accessory
Rev.C
Confidential
TM-L90 Service Manual
Table D-1 Alphanumeric list
Rev.C
Name for service manual
Name for price list
Q’ty
Ref.#
Note
Paper outlet tape
TAPE,PAPER OUTLET
1
175
Accessory
Plain washer (W1)
PLAIN WASHER
—
W1
Platen assembly
PLATEN ASSEMBLY
1
163
Power switch cover
COVER,POWER SWITCH,AA
1
157
Reduction gear C
GEAR,REDUCTION,C
1
115
Reduction gear D
GEAR,REDUCTION,D
1
116
Roll paper cover assembly
COVER,ROLL PAPER ASSEMBLY,BA
1
152
Rubber foot A
RUBBER FOOT,A
4
140
Rubber foot C
RUBBER FOOT,C
4
159
Screw (S1)
C.B.P-TITE,3X10,F/ZN
—
S01
Screw (S10)
C.C.S. SCREW
—
S10
Screw (S2)
C.C.P-TITE SCREW,3X8,F/ZN
—
S02
Screw (S3)
C.B.B.SCREW,4X12,F/ZN
—
S03
Screw (S4)
C.B.S. SCREW
—
S04
Screw (S5)
C.B.S. SCREW
—
S05
Screw (S6)
C.P.S.(O) SCREW
—
S06
Screw (S7)
C.B.B-TITE SCREW
—
S07
Screw (S9)
C.B. SCREW
—
S09
Shield plate
PLATE,SHIELD
1
180
Spacer
SPACER,3x4x4
3
153
Spacer B
SPACER,B
2
178
Spacer guide plate
PLATE,SPACER GUIDE
1
171
Spacer guide shaft
SHAFT,SPACER GUIDE
1
170
Spacer (3X4X4)
SPACER,3X4X4,F/ZN
3
153
Spring holder plate
PLATE,SPRING HOLDER
1
113
Sub circuit board assembly
SUB CIRCUIT BOARD ASSEMBLY,AA
1
209
Switch circuit board assembly
SWITCH CIRCUIT BOARD ASSEMBLY,AA
1
210
Switch circuit board FFC
FFC,SWITCH CIRCUIT BOARD
1
208
Switch panel holder
HOLDER,SWITCH PANEL
1
134
Switch panel label
LABEL,SWITCH PANEL,BA
1
158
Switch screw
SCREW,SWITCH,1
2
105
Tension plate spring
SPRING,TENSION PLATE
2
123
Thermal print head assembly
THERMAL PRINT HEAD ASSEMBLY,C
1
147
Accessory
Accessory
Accessory
Parts List Appendix D-5
Confidential
Reference Number List
Table D-2 Reference number list
Ref.#
Name for service manual
Name for price list
Q’ty
101
NE detector adjustment screw
SCREW,DETECTOR ADJUSTMENT, N.E.
1
102
Logo plate
LOGO PLATE,AB
1
103
Head caution seal
SEAL,CAUTION,HEAD B
1
104
Fixed blade holder spring
SPRING,BLADE HOLDER
1
105
Switch screw
SCREW,SWITCH,1
2
106
Caution seal
SEAL,CAUTION,C
1
107
Frame R
FRAME,R
1
108
Front frame
FRAME,FRONT
1
109
Frame strengthening plate R
PLATE,FRAME STRENGTHEN,R
1
110
Frame strengthening plate L
PLATE,FRAME STRENGTHEN,L
1
111
Circuit board frame
FRAME CIRCUIT BOARD,A
1
112
BM detector holder
HOLDER,BM DETECTOR
1
113
Spring holder plate
PLATE,SPRING HOLDER
1
114
Fixed blade
FIXED BLADE
1
115
Reduction gear C
GEAR,REDUCTION,C
1
116
Reduction gear D
GEAR,REDUCTION,D
1
117
Paper feed motor damper
DAMPER,PAPER FEED MOTOR
3
118
Motor ground plate
GROUND PLATE,MOTOR
1
119
Center frame
FRAME,CENTER
1
120
Label paper holder
HOLDER,LABEL
1
121
LED holder assembly
HOLDER,LED ASSEMBLY
1
122
Paper holding roller
ROLLER,PAPER HOLD
8
123
Tension plate spring
SPRING,TENSION PLATE
2
124
Cover leaf spring
PLATE SPRING,COVER
1
125
Head holder spring
SPRING,HEAD HOLDER
2
126
Label paper guide
GUIDE,LABEL
1
127
Hinge cover
COVER,ARM,AA
1
128
Cover open lever
LEVER,COVER OPEN
1
129
Lever shaft
SHAFT,LEVER
1
130
Lever button
BUTTON,LEVER,AA
1
131
Feed button
BUTTON,FEED,AA
1
132
Feed spacer
SPACER,FEED
1
133
Cover rotation shaft
SHAFT,COVER TURNING
2
134
Switch panel holder
HOLDER,SWITCH PANEL
1
Appendix D-6 Parts List
Note
Rev.C
Confidential
TM-L90 Service Manual
Table D-2 Reference number list
Rev.C
Ref.#
Name for service manual
Name for price list
Q’ty
Note
135
Feed sheet
SHEET,FEED,A
1
136
Main case assembly
CASE,MAIN ASSEMBLY,AA
1
139
Cutter cover
COVER,CUTTER,AA
1
140
Rubber foot A
RUBBER FOOT,A
4
141
Connector cover
COVER,CONNECTOR,AA
1
142
Frame L assembly
FRAME,L ASSEMBLY,A
1
144
NE detector lever
LEVER,N.E.DETECTOR
1
145
NE detector holder
HOLDER,N.E.DETECTOR
1
146
Micro switch
MICRO-SWITCH
1
147
Thermal print head assembly
THERMAL PRINT HEAD ASSEMBLY,C
1
148
Manual cutter screw
SCREW,MANUAL CUTTER
3
149
Cutter frame assembly
FRAME,CUTTER ASSEMBLY
1
150
Paper cutter cover assembly
COVER,PAPER CUTTER ASSEMBLY,B
1
151
Cutter motor sub-assembly
MOTOR,CUTTER SUB ASSEMBLY
1
152
Roll paper cover assembly
COVER,ROLL PAPER ASSEMBLY,BA
1
153
Spacer (3X4X4)
SPACER,3X4X4,F/ZN
3
154
DIP switch cover
COVER,DIP SWITCH
1
155
Handling label
LABEL,OPERATION,BA
1
156
Label paper platen holder
HOLDER,LABEL PLATEN
1
157
Power switch cover
COVER,POWER SWITCH,AA
1
Accessory
158
Switch panel label
LABEL,SWITCH PANEL,BA
1
Accessory
159
Rubber foot C
RUBBER FOOT,C
4
160
Cover tape
TAPE,COVER
1
162
Autocutter unit
AUTO CUTTER UNIT
1
163
Platen assembly
PLATEN ASSEMBLY
1
164
Paper feed roller shaft holder
SHAFT HOLDER,PAPER FEED ROLLER
1
165
Bottom plate
PLATE,LOWER
1
166
Cover detector assembly
COVER,DETECTOR ASSEMBLY
1
167
Manual cutter
MANUAL CUTTER
1
169
Holder auxiliary plate
PLATE,HOLDER AUXILIARY
1
170
Spacer guide shaft
SHAFT,SPACER GUIDE
1
171
Spacer guide plate
PLATE,SPACER GUIDE
1
172
Hinge spacer
SPACER,HINGE
2
173
Label paper spacer
SPACER,LABEL
1
Accessory
174
Paper outlet guide
GUIDE,PAPER OUTLET,AA
1
Accessory
175
Paper outlet tape
TAPE,PAPER OUTLET
1
Accessory
Accessory
Parts List Appendix D-7
Confidential
Table D-2 Reference number list
Ref.#
Name for service manual
Name for price list
Q’ty
178
Spacer B
SPACER,B
2
179
Mini-clamp
MINI CLAMP
1
180
Shield plate
PLATE,SHIELD
1
201
Main circuit board unit
MAIN CIRCUIT BOARD UNIT
1
202
I/F circuit board unit
I/F CIRCUIT BOARD UNIT
1
205
Paper feed motor
MOTOR,PAPER FEED,B
1
206
NE detector lead wire
LEAD WIRE,N.E.DETECTOR
1
207
Head FFC
FFC,HEAD
1
208
Switch circuit board FFC
FFC,SWITCH CIRCUIT BOARD
1
209
Sub circuit board assembly
SUB CIRCUIT BOARD ASSEMBLY
1
210
Switch circuit board assembly
SWITCH CIRCUIT BOARD ASSEMBLY
1
211
Ferrite core
FERRITE CORE
1
213
BM paper detector circuit board
assembly
CIRCUIT BOARD,BM PAPER DETECTOR
ASSEMBLY
1
E1
E-ring (E1)
RETAINING RING
—
E2
E-ring (E2)
RETAINING RING
—
N1
Nut (N1)
HEXAGON NUT
—
S01
Screw (S1)
C.B.P-TITE,3X10,F/ZN
—
S02
Screw (S2)
C.C.P-TITE SCREW,3X8,F/ZN
—
S03
Screw (S3)
C.B.B.SCREW,4X12,F/ZN
—
S04
Screw (S4)
C.B.S. SCREW
—
S05
Screw (S5)
C.B.S. SCREW
—
S06
Screw (S6)
C.P.S.(O) SCREW
—
S07
Screw (S7)
C.B.B-TITE SCREW
—
S09
Screw (S9)
C.B. SCREW
—
S10
Screw (S10)
C.C.S. SCREW
—
W1
Plain washer (W1)
PLAIN WASHER
—
Appendix D-8 Parts List
Note
Accessory
Rev.C
Confidential
TM-L90 Service Manual
Reference for Screw Types
Standard Screws
Head (side)
Washer (assembled)
Head (top)
Body
Table D-3 Standard screw types
Head (top)
Head (side)
Body
Washer (assembled)
C (Cross)
P(Pan)
S-tite
(S) (Spring lock washer)
B (Bind)
C (Cup)
B-tite
(S-P1)/(S-P2)/(S-P3)/(S-P4)
(Spring lock washer + plain
washer)
P-tite
T-B
(O) (Outside toothed lock
washer)
(P1)/(P2)/(P3)/(P4) (Plain
washer)
(O-P1) (Outside toothed
washer + plain washer)
Rev.C
Parts List Appendix D-9
Confidential
Special Screws
Table D-4 Special screws
Overview
Ref. #
101
105
148
Appendix D-10 Parts List
Rev.C
Confidential
TM-L90 Service Manual
Overall Exploded Diagram
Case Unit
D
130
158
172
159
E2
131
159
155
132
D
175
E
173
S10
152
133
102
F
E2
174
E
123
172
A
S6
178
123
128
E2
S6
H
B
E2
133
C
G
201
N
S6
129
L
159
F
S6
J
136
171
E2
104
I
I
S6
S6
202
J
179
159
114
H
B
G
139
S7
N
141
C
A
S1
156
L
S5
160
S5
S1
S1
E2
164
E2
S7
157
S7
140
K
S7
140
213
106
140
140
112
163
S3
K
211
180
Rev.C
Parts List Appendix D-11
Confidential
TM-L90 Service Manual
Printer Mechanism
S
127
119
126
E
135
N1 118
S2
154
E2
170
S1
210
S4
116
E2
S4
134
B
H
115
S1
T
122
A
S2
122
162
S1
122
S2
148
167
148
110
Q
122
153
S2
W1
N1
122
S
122
166
150
208
V
X
122
205
N1
169
148
117
C
W1
F
142
V
153
N
117
101
U
108
144
E1
120
N1
145
M
122
S9
153
J
S9
E
105
X
124
S7
151
S4
117
S4
107
146
213
I
206
D
103
P
A
S4
E2
121
H
T
S1
B
C
S4
D
166
F
Q
105
S4
111
G
149
R
147
I
W
S6
W
S6
K
R
109
S4
L
113
M
125
S6
S4
125
165
O
J
N
207
P
209
S6
S6
O
Rev.C
U
G
S6
L
Parts List Appendix D-12
Confidential
TM-L90 Service Manual
Appendix E
Lubrication Points Diagram
G-36
G-45
G-36
G-45
G-36
G-45
G-45
G-45
G-45
G-45
G-36
G-45
G-45
G-36
G-45
G-36
G-45
G-45
G-36
G-45
G-45
G-45
G-36
G-15
G-36
G-45
G-45
Rev.B
Lubrication Points Diagram Appendix E-1
Rev.B
Power supply
Drawer
Host
interface
CNS1
Sub board
CNS2
CNS3
I/F circuit board
Switch board
(with DIP switch)
CN4
Power
switch
CN6
CN7
Powercontrol
circuit
+3.3V power system
+5V power system
+24V power system
DKD driver
I/F circuit board
interface
Switch board
interface
VI0
VBUS
BUS
VI0
TM-L90
Main circuit board unit
Volatile RAM
(U8)
DRAM
Font ROM
(U9)
Flash EEPROM
Program ROM
(U7)
Flash EEPROM
CPU
(U4)
+24V
Thermal head drive circuit
Sensor circuits
Auto cutter motor
drive circuit
Paper feed motor drive
circuit
CN10
CN11,12,13
CN8
CN9
Thermal head
Printer mechanism
Confidential
TM-L90 Service Manual
Appendix F
Overview of Electric Circuits
General Description
The figure below shows a block diagram of the electric circuits for the TM-L90.
Overview of Electric Circuits Appendix F-1
Confidential
Main Circuit Board Unit
The main circuit board unit is comprised of circuits used to control the CPU, memory,
mechanism drive unit, detectors, and power supply. It forms the nucleus of the control system
for the TM-L90.
CPU
DRAM
Font ROM
Program
ROM
Appendix F-2 Overview of Electric Circuits
Rev.B
Confidential
TM-L90 Service Manual
The table below lists the main elements of the main circuit board unit and their functions.
Table F-1 Main elements and their functions for main circuit board unit
Block
Location
Signals on
diagram
Description
Functions
CPU and
peripherals
U4
—
—
CPU and custom logic I/O ports
U7
—
max 8M bit (512K*16 bit)
Program memory
U8
—
4M bit (256K*16 bit)
DRAM
U9
—
8M bit (512K*16 bit)
Font Memory
X1
—
40 MHz
System clock (for U4)
X2
—
25 MHz
System clock (for U4)
F1
154004T
4A, surge-proof
Printer power supply fuse
Q1
+24V
24 VDC, 1.7A
Semiconductor switch for power supply to
mechanism
QS1, QS2
+24V OUT
24 VDC, 1.7A
Semiconductor switch for power supply to
printer
U1K
DKP
24 VDC, 1A
Power supply to drawer
LH9
VH 2
UZ1
VIO
5 VDC, 1.5A
Power supply to I/O logic circuits
UZ2
VBUS
3.3 VDC, 0.15A
Power supply to bus logic circuits
CN6
I/F BOARD
—
Universal interface board (UIB) connector
CN10
HEAD
—
Connector for thermal head unit
connection (front of the printer)
CN11
NE
—
Connector for paper near-end
connection
CN12
RE
—
(for TM-T90 only)
CN13
Label photo
—
Connector for transmission sensor photo
connection
CN4
SUB
—
Connector for sub circuit board
connection
CN7
SWITCH
—
Connector for switch circuit board
connection
CN8
A/C
—
Connector for autocutter unit connection
(front of the printer)
CN9
PF
—
Connector for PF motor connection
Switch
SW1
—
—
Power switch (front of the printer)
Interfaces
QK2, QK3
DKD 1,
DKD 2
24 VDC, 1A
Drawer drive transistor output signal
Mechanism
drivers
QMA1
ACM+,
ACM-
24 VDC, 0.25A
Driver and output signal for push-pull cutter
motor
UP1, UP2
PF_A+,
PF_A-,
PF_B+,
PF_B-
24 VDC, 0.7A
Driver and output signal for PWM power
supply control of bipolar stepping motor
for feed mechanism
Power
supply
system
Connectors
Rev.B
Power supply for thermal head
Overview of Electric Circuits Appendix F-3
Confidential
Power circuit
The power circuit generates three voltages (+5 V, +24 V and +3.3 V). Each voltage is supplied to
the circuits listed below:
Table F-2 Output voltages and their applications
Voltage Level
Application
+5 V
• Logic circuit (used mainly for circuits around CPU)
+24 V
• Print mechanism power supply
• Drawer kick power supply
• Interface circuit board unit power supply
+3.3V
• Logic circuit (used mainly for circuits around memory)
Power Supply On/Off Control
The figure below shows a block diagram of the power supply and on/off control circuit.
Semiconductor switch
Power
supply
AC
DC output
Logic circuit
DIP SW
Power switch
Power off command
TM-L90
The logic circuit operates according to the specifications listed in the table below.
Table F-3 Logic circuit functions
DC IN
Dip switch 1-1
Power Switch
DC Out
IN
ON
OFF
ON
OFF
1 sec ON
ON
OFF
3 sec ON
OFF
Appendix F-4 Overview of Electric Circuits
Rev.B
Confidential
TM-L90 Service Manual
DIP switch on the main circuit board (DSW2)
This DIP switch is used only at the factory. Always set this to OFF.
Switch Circuit Board Assembly
The switch circuit board assembly consists of three LEDs, one switch, and one DIP switch.
Sub Circuit Board Assembly
The next table shows the major components of the sub circuit board and their major functions:
Table F-4 Major components of the sub circuit board unit and their major functions
Block
Location
Signal name
Description
Function
Connector
CNS1
PS
—
Connector for PS adapter connection
CNS2
DKD
—
Connector for drawer connection
CNS3
—
—
Cable for main circuit board connection
Interface Circuit Board Unit
The interface circuit board unit serves as the core of the system that controls data send and
receive operations between the TM-L90 and host computer. Various interface circuit boards can
be used (including the EPSON UB series, except for the UB-P02 and UB-S03).
Rev.B
Overview of Electric Circuits Appendix F-5
Confidential
Test Points
Test points on the main circuit board
After a main circuit board unit failure, one basic method for diagnosing the cause of the problem
on the main circuit board unit is to check the power supply line. Use the following table to check
the power supply line. First, check step number 1, and proceed to the next step, if that is not the
problem.
Table F-5 Checking the power supply line
Power source
Terminal name
Test terminal
Parts terminal
Normal value
Power source for logic
circuit (DC)
Semiconductor switch ON
—
DS1, C
15V
Semiconductor switch OFF
24V
Power source for logic circuit (VIO)
VIO
UZ2, #4
5V
Power source for logic circuit
(VBUS)
VBUS
UZ2, #5
3.3V
Power source for logic circuit
(GND)
GND
—
0V
Power source for
mechanisms
+24V-operated components
(printer mechanism)
Drive power source (Q1, ON)
—
Q1, D
24V
Paper feed motor
Rotating
REF_PF
—
0.81~1.36V
Halted
0.0V
Power source for I/F
board
—
—
CN6, #5
24V
Power source for
drawer
—
—
UK1 pin#3
24V
Appendix F-6 Overview of Electric Circuits
Rev.B
Confidential
TM-L90 Service Manual
Test Point Locations
Test Point Locations (Side A)
R38
GND
REF_RF
VBUS
Q1
VIO
CN6
UK1
Test Point Locations (Side B)
DS1
UZ2
Rev.B
Overview of Electric Circuits Appendix F-7
Confidential
Parts Layout
Main Circuit Board Unit
Parts Layout for the Main Circuit Board Unit (Side A)
Appendix F-8 Overview of Electric Circuits
Rev.B
Confidential
TM-L90 Service Manual
Parts Layout for the Main Circuit Board Unit (Side B)
Rev.B
Overview of Electric Circuits Appendix F-9
Confidential
Switch Circuit Board Assembly
Parts Layout for the Switch Circuit Board (Side A)
Parts Layout for the Switch Circuit Board (Side B)
Sub Circuit Board Assembly
Appendix F-10 Overview of Electric Circuits
Rev.B
Confidential
TM-L90 Service Manual
Circuit Board Diagrams
Main Circuit Board (1 of 3) (Drawing Number 1)
AT197
VBUS
AT21
AT23
AT24
AT25
C20
8
7
6
5
AT64
AT65
AT66
AT67
C21
1
2
1
1
L8
2
2
AT68
AT69
C25
LM500
1
2
3
4
ROUT_LED
PWR_LED
nWDTOUT
RERR_LED
8
7
6
5
1
2
1
AT78
AT79
AT80
AT81
8
7
6
5
C28
2
1
2
3
4
2
RM15
AC_1
AC_2
DKD1
DKD2
C29
R69
R70
R71
R72
R73
R74
1
1
1
1
1
1
2
1
2
L5
1
8,20
AT99
UIBSEL
OFF_CTRL
SWV24
1
1
1
UIBSEL
OFF_CTRL
SWV24
4
8
20
5
6
7
8
nTIMO2
nTIMO1
nTIMI2
nTIMI1
4
3
2
1
nTIMO2
nTIMO1
nTIMI2
nTIMI1
20
20
20
20
SOLAT1
SOCLK1
SODAT1
Reserved
Reserved
Reserved
2
2
2
1
L10
1
VBUS
1
2
2
R75
2
AT161
AT160
AT159
AT158
AT157
AT170
AT169
AT168
AT167
AT166
AT165
AT164
AT163
AT179
AT178
AT177
AT176
AT175
AT174
AT173
AT172
1
2
1
1
1
2
C40
1
2
1
2
1
2
1
2
8
7
6
5
SILAT
SICLK
SIDAT
AT176
AT175
AT174
RTC_CE
RTC_DAT
RTC_CLK
AT173
AT172
AT170
AT169
nRTCINT
CR_HP
nSERVHD
nSPDV24
AT168
AT167
AT166
AT165
R50
2
1
INK_CTRG
CVS
CLS
MFS
AT164
L500
2
1
PTLED2
AT163
L501
2
1
PTLED1
AT161
AT160
AT159
AT158
AT157
IJREV
IJLP
IJD
IJCLKO
IJCLKE
L7
2
1
C22
nSPDV24
20
CVS
23
AT156
AT155
AT154
AT152
AT151
AT150
AT149
HRTS
HCLK2
HCLK1
HRA3
HRA2
HRA1
HRA0
AT148
AT147
AT146
HRLD
HRCLK
HRDATA
AT144
AT143
DADAT
DACLK
MFS
20
PTLED2
23
PTLED1
23
HRA3
HRA2
HRA1
HRA0
22
22
22
22
HRLD
HRCLK
HRDATA
22
22
22
R64
R65
2
2
1
1
AT142
AT141
AC_RST
RRE
DADAT
DACLK
20
20
AC_RST
AT140
AT139
AT138
AT137
RPM_PHB2
RPM_PHB1
RPM_PHA2
RPM_PHA1
23
PSW
DKDS1
RNE
8
5
23
RPF_PHB2
RPF_PHB1
RPF_PHA2
RPF_PHA1
24
24
24
24
C23
AT123
AT122
AT121
AT120
AT119
AT118
AT116
AT115
AT114
AT113
AT112
AT111
20
20
20
C19
short(7)
Xout
AT134
Xin
AT132
AT131
AT130
AT129
AT128
AT127
AT126
AT125
SILAT
SICLK
SIDAT
C500
AT130
AT129
AT123
AT122
C26
R103
R68
2
2
PSW
DKDS1
RNE
INK_NE
1
1
AT128
AT127
AT126
AT125
RCR_PHB2
RCR_PHB1
RCR_PHA2
RCR_PHA1
C27
RM16
AT121
AT120
AT119
AT118
AT109
AT108
AT107
AT106
AT105
5
6
7
8
4
3
2
1
RPF_PHB2
RPF_PHB1
RPF_PHA2
RPF_PHA1
AT116
AT115
AT114
AT113
HCTS
CTS
RTS
CLKIN/DTR
AT112
AT111
AT109
AT108
nCLK_REQ
DET
RXD
TXD
AT107
AT106
AT105
N25_RES
DSR_RES
EXT_RES
HCTS
4
CTS
4
RTS
4
CLKIN/DTR 4
nCLK_REQ
DET
RXD
TXD
4
4
4
4
N25_RES
DSR_RES
EXT_RES
4
4
20
R77
1
2
VBUS
R78
1
R76
1
1
11
AT144
AT143
AT142
AT141
AT140
AT139
AT138
AT137
C18
1
2
3
4
BLOCK(5)
2
AT53
AT179
AT178
AT177
1
1
C17
C16
AT187
AT186
AT185
AT184
AT183
AT182
AT181
C15
EPSON Japan
E01M06AC
Aither
2
1
LM501
1
C13
1
C12
C11
AT53
AT54
2
1
BCLK
short(6)
AT100
AT101
AT102
AT103
INT4
INT5
INT6
INT7
AD4
AD5
AD6
AD7
SV24
STH
SVH D
ARRE
C14
AT91
AT92
AT93
AT94
AT95
AT96
AT98
AT99
1
1
2
1
2
L4
AT84
AT85
AT86
AT87
AT88
AT89
2
2
2
2
2
2
U_RXD
U_TXD
U_RTS
U_CTS
INT0
INT1
INT2
INT3
AT41
AT42
AT43
AT44
AT45
AT46
AT47
AT48
AT49
AT50
AT51
AT52
1
AC_1
AC_2
DKD1
DKD2
1
L9
DSIO
DST0
DST1
DST2
DPCO
DCLK
AT99
AT76
AT77
AT82
AT23
AT24
AT25
AT26
AT27
AT28
AT29
AT30
AT31
AT32
AT33
AT34
AT35
AT36
AT37
AT38
AT39
AT152
AT151
AT150
AT149
AT148
AT147
AT146
1
AT50
AT51
AT62
AT63
2
2
nOFF_TRG
2
2
AT4
AT5
AT6
AT7
AT8
AT9
AT10
AT11
AT12
AT13
AT14
AT15
AT16
AT17
AT18
AT19
AT20
AT21
AT156
AT155
AT154
HRTS
HCLK2
HCLK1
VDDU3
HRA3
HRA2
HRA1
HRA0
HRLD
HRCLK
HRDATA
VSSU3
DADAT
DACLK
RPM_I1/SNSIN14
RPM_I0/SNSIN13
RPM_PHB2
RPM_PHB1
RPM_PHA2
RPM_PHA1
VSSU7
Xout
VDD8
Xin
ATPGCE
ATPGIN
RCR_I1/SNSIN12
RCR_I0/SNSIN11
RCR_PHB2
RCR_PHB1
RCR_PHA2
RCR_PHA1
VSSU2
RPF_I1/SNSIN10
RPF_I0/SNSIN9
RPF_PHB2
RPF_PHB1
RPF_PHA2
RPF_PHA1
VDDU1
HCTS
CTS
RTS
CLKIN/DTR
nCLK_REQ
I/F_DET
VSSU1
RXD
TXD
N25_RESET
DSR_RESET
IF_RESET
1
1
2
3
4
short(5)
1
nRESET
nNMI
VSS1
A0/nBSL
A1
A2
A3
A4
A5
A6
A7
VDD1
A8
A9
A10
A11
A12
A13
A14
A15
A16
VSS2
A17
A18
A19
A20
A21
nCE4/nCE11
nCE9/nCE17
nCE5/nCE15
VDD2
nCE8/nCE14/nRAS3
nCE7/nCE13/nRAS2
nCE6
nCE10EX
nWRL/nWR/nWE/nLWE
nLCAS/nUWE
nHCAS/nLWE
nRD
VSS3
D0
D1
D2
D3
D4
VDD3
D5
D6
D7
D8
D9
VSS4
2
D12
D13
D14
D15
8
7
6
5
2
2
2
AT183
AT182
AT181
TH500
R79
1
1
1
R81
1
R82
U6
2
R83
X2
1
2
3
4
X1
X2
GND
SSW
2
OSC3
DCLK
2
OSC4
DSIO
DST2
SSON
FS1
VDD
CLKOUT
1
2
2
2
2
2
R87
2
AT131
AT132
R86
1
R80
BLOCK(4)
R84
1
ATPGIN
ATPGCE
R85
1
AT57
AT70
1
BLOCK(6)
ICEMD
C33TEST
2
2
2
2
2
C41
AT58
AT59
AT61
DST1
DST0
DPCO
CN5
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
C42
2
2
R88
8
7
6
5
1
1
2
3
4
2
1
RM10
D8
D9
D10
D11
1
2
AT45
AT47
AT48
AT49
2
1
8
7
6
5
RM9
1
2
AT41
AT42
AT43
AT44
2
8
7
6
5
RINK_LED
6
6
5
5
1
2
L6
RM8
1
C34
AT36
AT37
AT38
AT39
2
C39
2
2
2
2
AT187
AT186
AT185
AT184
short(4)
R38
R502
C33
1
1
1
1
2
C38
R56
R58
R60
R62
AT1
AT2
C24
ROUT_LED
PWR_LED
nWDTOUT
RERR_LED
1
2
nWR
nLCAS
nHCAS
nRD
1
C32
AT33
AT35
2
C37
2
2
1
VSS10
AD0/K60/INT0
AD1/K61/INT1
AD2/K62/INT2
AD3/K63/INT3
VDD10(AVDD)
AD4/K64/INT4
AD5/K65/INT5
AD6/K66/INT6
AD7/K67/INT7
VSS9
nDMAREQ3/K54/INT4
nDMAREQ2/K53/INT3
nDMAREQ1/K51/INT1
nDMAREQ0/K50/INT0
SW24V_3
SW24V_2
SW24V_1
VDDU5
nADTRG/K52/INT2
VDD6
TIMO2
TIMO1
nTIMI2
nTIMI1
SOLAT1
SOCLK1
SODAT1
VDDU4
SILAT
SICLK
SIDAT
RTC_CE
RTC_DAT
RTC_CLK
SNSIN8
SNSIN7
VSSU5
SNSIN6
SNSIN5
SNSIN4
SNSIN3
SNSIN2
SNSIN1
SNSIN16
SNSIN15
VSSU4
IJREV
IJLP
IJD
IJCLKO
IJCLKE
1
1
1
R51
R53
R102
DSWMEM
RM4
U4
RM11
20
20
20
20
2
AT29
AT30
AT32
AT34
nRAS2
nPGMCE
1
2
AT28
nOFF_TRG
L11
2
DSWMEM
1
ADTRG
R34
R35
R36
C10
VIO
AT197
AT196
AT195
AT194
AT193
AT192
AT191
AT190
AT189
1
1
C31
R48
nCE17
nCE15
nCE14
nULCE
2
C36
nFNTCE
1
2
3
4
R37
AT61
AT62
AT63
AT64
AT65
AT66
AT67
AT68
AT69
AT70
AT71
OSC3
AT73
OSC4
AT75
AT76
AT77
AT78
AT79
AT80
AT81
AT82
AT83
AT84
AT85
AT86
AT87
AT88
AT89
AT90
AT91
AT92
AT93
AT94
AT95
AT96
AT97
AT98
AT99
AT100
AT101
AT102
AT103
AT104
AT26
AT27
D4
D5
D6
D7
AT193
AT192
AT191
BOARDTH
AT56
AT57
AT58
AT59
2
2
1
2
3
4
8
7
6
5
1
2
1
1
1
D0
D1
D2
D3
SSON
FS1
VDD
CLKOUT
2
DMAREQ1
DMAREQ0
AT189
X1
X2
GND
SSW
BCLK
VDD4
VSS6
PLLC
ICEMD
PLLS1
PLLS0
VSS7
nX2SPD
D10
D11
D12
D13
D14
D15
nBUSREQ/nCE6/P34
nBUSACK/P35
C33TEST
VDD7
OSC3
VDD5
OSC4
VSS5
nDMAACK0/P32
nWAIT/nCE4&5/P30
nDMAACK2/SIN1/P04/INT4
nDMAEND2/SOUT1/P05/INT5
nDMAACK3/nSCLK1/P06/INT6
nDMAEND3/nSRDY1/P07/INT7
nDMAEND0/EXCL4/P15
VSSU6
DSIO
DST0/T8UF0/EXCL0
DST1/T8UF1/EXCL1
DST2/T8UF2/EXCL2
DPCO/T8UF3/EXCL3
DCLK/FOSC1/P14
VSS8
SIN0/P00/INT0
SOUT0/P01/INT1
nSCLK0/P02/INT2
nSRDY0/P03/INT3
nDRD/P20/INT0
nDWE/nGAAS/P21/INT1
VDDU2
TM0/P22/INT2
TM1/P23/INT3
TM2/P24/INT4
TM3/P25/INT5
TM4/P26/INT6
TM5/P27/INT7
VDD9
D12
D13
D14
D15
R46
R47
C507
C30
2
2
2
2
A20
A21
C506
2
C505
2
2
C504
C35
D8
D9
D10
D11
1
2
3
4
1
nWR
nLCAS
nHCAS
nRD
2
2
2
2
AD5
AD6
AD7
R23
AT195
AT194
R39
short(8)
1
2
3
4
1
1
1
1
short(3)
2
RM6
2
2 nRAS2
2 nPGMCE
Xout
2
8
7
6
5
BOARDTH
1
2
3
4
2
2
8
7
6
5
AT17
AT18
AT19
AT20
1
2
3
4
Xin
1
AT13
AT14
AT15
AT16
RM5
A16
A17
A18
A19
nCE17
nCE15
nCE14
nULCE
D4
D5
D6
D7
R29
2
2
8
7
6
5
8
7
6
5
C503
2 nFNTCE
2
2
2
2
2
R32
1
1
2
3
4
AT8
AT9
AT10
AT11
2
A8
A9
A10
A11
8
7
6
5
1
1
2
3
4
A12
A13
A14
A15
A16
A17
A18
A19
D0
D1
D2
D3
R25
BLOCK(3)
20
22
23
23
1
R26
1
R27
U3
1
RM2
A4
A5
A6
A7
VBUS
A12
A13
A14
A15
2
2
2
2
SV24
STH
ALRE
ARRE
3
A4
A5
A6
A7
2 A20
2 A21
2
2
2
2
2
2
2
2
RM3
RM7
2
2
2
2
1
1
1
1
2
3
AT4
AT5
AT6
AT7
8
7
6
5
R28
R30
R31
R33
X1
2 A8
2 A9
2 A10
2 A11
2
2
2
2
1
2
3
4
BLOCK(2)
1
short(2)
R21
2
2
2
2
2
A0
A1
A2
A3
C51
1
A0
2 A1
2 A2
2 A3
C52
RM1
1
short(1)
This number
shows the
drawing
number.
AT196
AT1
AT2
2
2
1
1
1
2
3,20 nRESET
20 nNMI
R22
R24
2
nRESET
nNMI
Rev.B
Appendix F-12
Confidential
TM-L90 Service Manual
Main Circuit Board (2 of 3) (Drawing Number 2)
VBUS
BLOCK(12)
VBUS
C43
2
1
2
1
P
N C501
1
2 C45
1
2 C46
VBUS
C44
A8
A9
A10
A11
1
1
1
1
A12
A13
A14
A15
1
1
1
1
A16
A17
A18
A19
1 A20
1 A21
1 nPGMCE
1 nFNTCE
A8
A9
A10
A11
R92
1
2
A21
nWR
BLOCK(7)
1
2
A19
A18
A8
A7
A6
A5
A4
A3
A2
A12
A13
A14
A15
A16
A17
A18
A19
1
1
1
1
nRD
nWR
nLCAS
nHCAS
nRAS2
D0
D1
D2
D3
C502
nPGMCE
nFNTCE
D4
D5
D6
D7
Rev.B
D8
D9
D10
D11
1
1
1
1
D12
D13
D14
D15
nPGMCE
A1
NC
LCAS
UCAS
OE
A8
A7
A6
A5
A4
VSS
D15
D14
D13
D12
VBUS
D11
D10
D9
D8
32
31
30
29
28
27
26
25
24
23
N
P
2
1
2
1
C48
D0
D1
D2
D3
R94
BLOCK(8)
1
2
D12
D13
D14
D15
A16
A15
A14
A13
A12
A11
A10
A9
A21
nWR
D4
D5
D6
D7
D8
D9
D10
D11
R90
R91
nLCAS
nHCAS
nRD
A9
A8
A7
A6
A5
VIO
nRD
nWR
nLCAS
nHCAS
nRAS2
R95
1
1
1
1
A1
A2
A3
A4
NC
NC
WE
RAS
NC
A0
A1
A2
A3
VCC
44
43
42
41
40
39
38
37
36
35
C47
A20
1
1
1
1
13
14
15
16
17
18
19
20
21
22
nWR
nRAS2
VSS
D15
D14
D13
D12
VSS
D11
D10
D9
D8
VBUS
A20
A21
VBUS
1
1
1
1
1
D11
D3
D10
D2
D9
D1
D8
D0
nRD
D4
D5
D6
D7
VCC
D0
D1
D2
D3
VCC
D4
D5
D6
D7
1
R89
1
2
3
4
5
6
7
8
9
10
D0
D1
D2
D3
1
A20
D15
D7
D14
D6
D13
D5
D12
D4
2
1
1
1
1
A4
A5
A6
A7
A16
BYTE
VSS2
D15/A-1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE
VSS1
CE
A0
U8
2
A4
A5
A6
A7
A15
A14
A13
A12
A11
A10
A9
A8
A19
NC/A20
WE
RESET
NC
WP/ACC
RY/BY
A18
A17
A7
A6
A5
A4
A3
A2
A1
A17
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1
2
A19
A18
A8
A7
A6
A5
A4
A3
A2
1
1
1
1
1
A1
A2
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
U9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
A15
A14
A13
A12
A11
A10
A9
A8
A19
NC/A20
WE
RESET
NC
WP/ACC
RY/BY
A18
A17
A7
A6
A5
A4
A3
A2
A1
A16
BYTE
VSS2
D15/A-1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE
VSS1
CE
A0
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A17
1
DSWMEM
Memory
Rewrite
R93
DSW2
DSWMEM
1
2
2
1 A1
1 A2
1 A3
U7
A16
A15
A14
A13
A12
A11
A10
A9
D15
D7
D14
D6
D13
D5
D12
D4
D11
D3
D10
D2
D9
D1
D8
D0
nRD
nFNTCE
A1
Appendix F-13
Confidential
TM-L90 Service Manual
Note; Non-contiguous numbers are given to the drawing numbers.
Main Circuit Board (3 of 3) (Drawing Number 20)
VIO
VIO
1
I/F BOARD
1
Page F-16
L12
L1
2
2
R100
3
IF_SD
IF_RD
C1
RTS
UIBSEL
CLKIN/DTR
CTS
nCLK_REQ
RTS
UIBSEL
CLKIN/DTR
CTS
nCLK_REQ
TXD
RXD
TXD
RXD
RTS
1,4
UIBSEL
1,4
CLKIN/DTR 1,4
CTS
1,4
nCLK_REQ
1,4
1 ROUT_LED
TXD
RXD
1 RERR_LED
ROUT_LED
2
Q500
1
2
R98
R97
1
1
8
DSW1-1+
23
R99
1,4
1,4
RERR_LED
3
2
8
2
DSW1
HCTS
IF_PWRON
HCTS
IF_PWRON
1,4
4,8
2
nRESET
1,3
nIFRST
3
1
1
nIFRST
PWR_LED1
CLK
LRE_S
S/L
N
P
24
C3
DK_S
DK_P
DK_1
DK_2
VPS24
GPS24
1
2
3
4
PF_VR
PF_VR
Page F-17
A01
A02
A03
NC
VCC
SCL
SDA
GND
8
7
6
5
SIDAT
SILAT
SICLK
DACLK
DADAT
A/C
motor
A/C DRIVER
DACLK
DADAT
1
1
1,6
1,6
AC_1
AC_2
6
nACOVC
AC_1
AC_2
nACOVC
AC+
AC-
23
DKD_EN
DKDS1
1,5
nERRDIS
nERRDIS
5
C
A
DKD1
DKD2
GPS24
DKD1
DKD2
Page F-17
3
4
2
5
nWDTOUT
1
6
nERRDIS
LED1
nWDTOUT
1
1,5
1,5
nERRDIS
5
PF_VR
1,24 RPF_PHA1
1,24 RPF_PHA2
PF_VR
RPF_PHA1
RPF_PHA2
PF_VR
PF_PH1
PF_I10
DK_Driver
VPS24
Page F-18
V24IN
4,8 IF_PWRON
V24OUT
nOFF_TRG
OFF_CTRL
PF_PH2
PF_I20
PSW+
PSW-
HEAD DRIVER
DSW1
8
PSW
1,8
1,22 STH
PSW
DSW1-1+
DSW1-1+
DSW1-1+
TH_THERM
1,22 HRA2
1,22 HRA3
VIO
HRDATA
HRCLK
HRLD
HRA0
HRA1
HRA2
HRA3
TH_SCLK
TH_LAT
TH_STB_A
R16
2
2
1
N
1
nIFRST
nRESET
Q2
nIFRST
nRESET
2
Page F-19
1
VBUS
1
CH13
CH14
TH_CLK
DI34
BI_DI34
VH2
VH2
VH2
VH2
1
1
1
P
R15
VIO
TH_TM1
TH_CLK
TH_DI2
TH_DI4
VBUS
V24S
TH_TM1
TH_D3
TH_D4
VIO
Logic Power
2
VIO
TH_STB
TH_STB
TH_D1
TH_D2
VBUS
3
TH_DI1
TH_DI3
TH_LATCH
TH_VH1
1,22 HRDATA
1,22 HRCLK
1,22 HRLD
1,22 HRA0
1,22 HRA1
V24
STH
8
SW1
Q1
nIFRST
nRESET
TH_VH2
HEAD Driver
1
2
6
1
Page F-16
Logic Power
2
CN12
VBUS
5
V24S
2
2
1
2
RRE_S
RRE_S
1
2
3
4
D1
nTIMO2
2
nSPDV24
1
U2A
3
1
-
2
1
1
R7
2
4
1,23 PTLED1
1,23 PTLED2
1,23 CVS
2
R10
R8
2
nSPDV24
R9
+
2
C6
1
2
R6
1
Label
photo
MECHA SENSOR
1
1
SV24
1
SV24
1
1
8
nTIMO2
23
R4
1
2
3
4
R5
nTIMO1
2
1
VIO
1
3
1
4
nTIMO1
PWR_LED1
23 PWR_LED1
1
1
RE
VIO
2
SWV24
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
3
1,3
3
SWV24
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
R17
R18
R19
1
1
2
3
4
HEAD
VH1
VH1
VH1
VH1
VH1
DI12
BI_DI12
TH_LACTH
PF Driver
IF_PWRON
Power SW Control
DM2
1
2
3
4
CN10
Page F-20
DSW1
DSW1
PSW
IF_PWRON
A
2
nOFF_TRG
OFF_CTRL
C7
C50
PF
motor
CN9
PF_BPF_B+
PF_A+
PF_A-
PF_B+
PF_B-
1
1,8 nOFF_TRG
1,8 OFF_CTRL
V24IN
PSW+
PSW-
Power
SW
PF_A+
PF_A-
2
4
C9
1
3
D2
RPF_PHB1
RPF_PHB2
1
2
3
4
5
L502
1
V24IN
2
2
1
C
1
1,24 RPF_PHB1
1,24 RPF_PHB2
V24S
POWER
L3
2
2
1
2
3
4
5
V24S
F1
1
1
L503
N
1
VPS24
GPS24
AC_RST_S
A/C_Driver
PF Driver
24
2
DKD1
DKD2
R3
AC_RST_S
VIO
QM1
1
DK_1
DK_2
DK_P
DKDS1
2
BLOCK(1)
DKDS1
CN8
ACM+
ACM-
ACM+
ACM-
nACOVC
DRAWER KICK DRIVER_1
DK_S1
C49
C4
CN4
GPS24
DK_2
DK_P
DK_S
DK_1
LRE_S
U1
1
Sub
Board
23
P
EXT_RES
2
2
1
1
1
GND
1 SIDAT
1 SILAT
1 SICLK
VIO
R1
R500
5
QM3
Common UIB_IF
EXT_RES
PWR_LED
1
HCTS
IF_PWRON
1 PWR_LED
4
1,4
1,4
1,4
2
IF_HCTS
N25_RES
DSR_RES
DET
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1
2
1
N25_RES
DSR_RES
DET
N25_RES
DSR_RES
DET
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
OUTPUT
CVS_S
DSW1-1+
POWER_LED
DSW1
CVS_S
1
CN7
ERROR_LED
PAPER_LED
2
2
23 PWR_LED1
IF_N25RES
IF_DSRRES
Switch
Board
1
HOST_RTS
IF_CTS
IF_DET
IF_RTS
IF_CLKIN/DTR
nIF_CLKREQ
C2
9
8
7
6
5
4
3
2
1
BLOCK(11)
C53
I/F CIRCUIT
2
9
8
7
6
5
4
3
2
1
MFS
1
2
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
GND
DK_1
DK_S
PG
PG
+24V
+24V
PG
HOST_RTS
CTS
DET
RTS
CLKIN/DTR
CLKREQ
SG
+5V
DK_2
DK_G
DK_P
PG
+24V
+24V
PG
SG
SD
RD
HOST_CTS
N25_RESET
DSR_RESET
NRESET
SG
MFS
1
1 MFS
CN6
1,23 ARRE
1,23 ALRE
R11
1,23 RNE
1,23 AC_RST
CVS
ARRE
ALRE
RNE
AC_RST
PTLED_COM1
PTLED_COM2
CVS
ARRE
ALRE
RNE
AC_RST
2
2
C8
PTLED1
PTLED2
Page F-20
Mecha sensor
PWR_LED1
PWR_LED2
CVS_S
RRE_S
LRE_S
RNE_S
AC_RST_S
PWR_LED1
PWR_LED2
PWR_LED1
23
CVS_S
23
RRE_S
LRE_S
23
23
AC_RST_S
23
CN13
1
CVS_S
RRE_S
LRE_S
RNE_S
AC_RST_S
2
1
2
3
R501
1
2
3
NE
CN11
1
2
1
2
1
nTIMI1
1
nTIMI2
1
1
2
R13
nTIMI1
2
VIO
R14
DM500
nTIMI2
4
1
nSPDV24
3
2
nACOVC
nSPDV24
1
nACOVC
6
nOFF_TRG
1,8
1
VIO
R20
Rev.B
nNMI
nNMI
2
D500
1
1
2
nOFF_TRG
TM-T90 Common & Mecha Driver Root
Sheet No.20
Appendix F-14
Confidential
TM-L90 Service Manual
Logic Power Block (Drawing Number 3)
CZ1
1
FZ1
2
LZ1
RZ1
VCC
BOOT
COMP
FB
4
3
2
1
OUT
OSC
SS_INH
GND
1
VIO
2
VIO
1,2,4,5,6,8,20,23,24
VBUS
1,2,20,22,23
RZ2
1
RZ4
1
2
1
1
2
1
2
2
N
CZ14
2
CZ6
DZ1
2
1
P
1
RZ3
CZ5
2
2
UZ1
2
1
N
CZ3
1
P
CZ2
5
6
7
8
1
2
2
1
V24S
1
5,8,20
2
CZ7
UZ2
1
CZ15
1
1
2
2
3
CZ9 CZ13
RZ6
1
2
3
CZ11
2
1
1
2
1
QMZ1
2
N
CYZ1
nIFRST 20
4
CZ10
2
2
RZ5
5
P
nIFRST
6
1
CZ8
VBUS
5
6
7
8
VIN
VOUT
CONT
NC
RESET GND
CD
NC
1
4
3
2
1
1
ZDZ1
2
CZ4 CZ12
nRESET
2
nRESET
nRESET 1,20
I/F Circuit Block (Drawing Number 4)
7
8
VIO
3
HOST_RTS
RY4 1
2
RY8 1
2
UY2B
5
4
20
CLKIN/DTR
CY502
BLOCK(13)
CY500
6
1
1
20 IF_CLKIN/DTR
UIBSEL
1
UIBSEL 1
4
2
8
2
1
2
CLKIN/DTR
UY2A
RTS
1
2
2
RY7 1
IF_RTS
2
20
RTS
1
VIO
RY19
CY1
1
2
2
1
2
2
1
2
RY18 RY17
1
1
1
1
1
RY15 RY10 VIO
1
RY23
1
RY14 RY13 RY20
2
2
2
2
RY16
CTS
DET
CLK_REQ
IF_SD
IF_RD
RY12 1
RY11 1
2
2
TXD
RXD
20 IF_N25RES
20 IF_DSRRES
RY2 1
RY3 1
2
2
N25_RES
DSR_RES
1
20
20
CY501
CTS
1
DET
1
nCLK_REQ 1
TXD
RXD
1
1
N25_RES 1
DSR_RES 1
2
2
2
2
1
RY5 1
RY6 1
RY9 1
20
IF_CTS
20
IF_DET
20 nIF_CLKREQ
DY2
C
QMY1
6
5
4
1
2
3
A
3
4
2
DMY1
RY22 1
2
IF_PWRON
RY21 1
2
HCTS
8
1
20 IF_HCTS
Rev.B
Appendix F-15
Confidential
TM-L90 Service Manual
DK Driver Block (Drawing Number 5)
2
1
VIO
RK1
QK1
DK_1
2
DKDS1
DKDS1
1
20
DK_S1
2
DK_S1
1
1
20
RK2
3
CK1
1
2
2
DK_1
RK13
QK2
3
1
DK_2
DK_2
2
2
DMK1
RK14
1
VIO
RK5
6
1
2
20
1
1
RK15
2
5
3
4
DKD_EN
2
DKD_EN 20
QK3
DK_P
DK_P
C
A
3
20
1
1
1
2
RK6
2
RK16
1
V24S
4
DK5
2
2
2
1
3
DKD1
5
DKD2
DKD1
1
DKD2
1
RK7
UK1
1
3
O
G
1
I
QMK1
1
1
CK3
1,2,3,4,6,20,22,23,24
2
2
2
CK4
GPS24
A/C Driver Block (Drawing Number 6)
VIO
1
1
V24
CA4
CA3
QMA3
QMA1
4
AC+
3
2
3
DMA1
5
1
5
1
2
4
3
1
2
3
4
7
3
8
7
6
5
2
ACM+
20
ACM-
20
CA1
2
AC-
2
RMA1
2
1
1
10
6
1
1
2
QMA2
8
1
4
9
5
RA3
4
2
1
QA1
RA4
1
1
2
2
1
nACOVC
3
20
RA5
2
2
1
CA2
Rev.B
Appendix F-16
Confidential
TM-L90 Service Manual
Power SW Controller Block (Drawing Number 8)
RS30
P
1
2
RS31
3
2
3
V24OUT
2
V24OUT 3,5,20
CS1
RS27
QS1
QS2
2
2
2
1
1
2
RS4
RS5
1
2
2
RS3
1
1
VIO
1
DS1
1
2
N
1
RS2
2
1
RS1
1
1
V24IN
V24IN
1
20
1
RS25
RS26
2
20
1
DSW1
PSW
DSW1
2
5
PSW
1
6
1
2
3
2
4
2
3
RS6
QS3
IF_PWRON 4
VIO
1
2
3
Q
Q
5
CS5
6
1
7
2
DSW1-1+
1
4
2
3
US1A
CS6
DMS6
1
RS9
5
1
PSW+
PSW+
1
20
6
DMS7
1
1
3
RS29
QMS4
2
PSW-
2
CS3
20
1
2
4
2
4
5
3
RS28
2
6
CS7
1
2
RS8
2
2
OFF_CTRL 1
1
1
DSW1-1+
GND
RS7
QMS2
D
CLK
1
3
1
2
2
DMS5
QMS1
20
14
2
4
14
2
2
1
1
1
2
3
1
2
2
DMS4
DMS3
3
2
1
1
3
CS2
2
CS4
RS10
PR
DMS2
CL
3
VCC
4
2
1
4
5
6
1
6
5
4
6
5
4
3
4
4
5
6
DMS1
RS11
2
2
2
VIO
RS12
1
11
CS10
7
2
4
Q
Q
9
QS12
8
US1B
US2B
CS8
5
+
6
-
2
3
CLK
1
1
10
D
PR
RS22
RS23
2
14
2
1
CL
1
2
13
-
12
3
VCC
2
US2A
GND
+
1
1
3
1
2
8
1
CS9
1
RS13
P 1
RS20
N
1
2
1
1
2
RS21
RS18
7
2
RS17
RS24
1
RS19
2
RS16
2
2
2
2
1
1
1
RS14
CS11
nOFF_TRG 1,20
N
P
N
P
QS14
Rev.B
CS12
5
+
6
-
7
U2B
Appendix F-17
Confidential
TM-L90 Service Manual
HEAD Driver Block (Drawing Number 22)
1
1
DMH1
2
VBUS
RH15
2
RH1
1
TH_THERM
1
1
LH1
4
3
RH17
1
2
TH_TM1 20
RH16
CH8
1
2
1
1
TH_D2
1
2
1
2
TH_DI1 20
2
TH_D1
2
1
2
1
CH1
1
RH2
1
TH_DI2 20
RH3
1
LH2
RH4
CH2
2
2
RH7
RH9
LH9
LH8
1
2
1
2
TH_LATCH 20
TH_VH1 20
1
2
1
TH_SCLK
1
2
1
2
LH5
TH_STB 20
CH9
CH10
TH_CLK 20
RH10
CH4
2
CH3
N
2
2
1
1
TH_STB_A
1
1
1
RH8
P
1
LH4
CH5
2
TH_LAT
1
2
RH6
1
1
2
2
LH3
2
RH5
2
2
1
1
1
2
V24
2
VIO
VH2
RH12
P
CH12
N
TH_DI4 20
RH14
2
CH7
2
CH6
Rev.B
TH_VH2 20
1
2
RH13
CH11
2
1
TH_DI3 20
1
2
2
2
LH7
1
1
1
RH11
2
2
TH_D4
1
1
1
TH_D3
1
LH6
1
1
BLOCK(9)
Appendix F-18
Confidential
TM-L90 Service Manual
MECHA Sensor Block (Drawing Number 23)
RL1
RL2
RL3
VIO
1
1
1
2
2
2
2
1
VBUS
3
1 ARRE
1 ALRE
1 RNE
1 AC_RST
1
2
RRE_S
20
RL6
1
2
LRE_S
20
RL8
1
2
RNE_S
20
RL9
1
2
AC_RST_S 20
RL10 1
2
CVS_S
1
2
2
2
CL3
CL4
CL5
RL5
2
2
CL2
2
2
RL4
CL1
20
BLOCK(10)
1
1
1
1
1
1 CVS
RL7
1
4
DML1
VIO
QML1
4
RL11
1 PTLED_COM1
3
2
1
1 PTLED_COM2
5
1
1
2
PWR_LED1
20
2
PWR_LED2
20
RL12
PF Driver Block (Drawing Number 24)
1
PF_PH1
1
PF_I10
PF_PH1
VIO
V24
PF_I10
UP1
1
2
3
4
5
6
7
8
PF_PH1
PF_I10
RP1
VBB
OUTB
D0
G4
G3
SENSE
OUTA
D1
16
15
14
13
12
11
10
9
1
2
RP4
1
1
1
1
VIO
PFD
REF
RC
G1
G2
VCC
PHASE
D2
CP2
PF_APF_A+
RP3
2
1
2
2
CP1
PF_B+
PF_B-
20
20
PF_B+
PF_B-
20
20
C
C
C
P
CP5
DP8
N
PF_VR
1
PF_VR
C
REF_PF
2
20
PF_APF_A+
2
RP2
PF_PH2
PF_I20
PF_PH2
PF_I20
PF_PH2
PF_I20
PFD
REF
RC
G1
G2
VCC
PHASE
D2
VBB
OUTB
D0
G4
G3
SENSE
OUTA
D1
16
15
14
13
12
11
10
9
DP5
A
A
DP7
DP6
1
2
RP6
1
1
1
1
1
1
2
3
4
5
6
7
8
A
A
UP2
CP4
RP5
2
2
2
CP3
Rev.B
Appendix F-19
EPSON
SEIKO EPSON CORPORATION
Printed in Japan