Download Sharp ER-A242 Service manual

SERVICE MANUAL
CODE : 00ZERA242USME
ELECTRONIC
CASH REGISTER
MODEL
ER-A242
(U version)
CONTENTS
CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 2. OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CHAPTER 3. MASTER RESET AND PROGRAM RESET. . . . . . . . . 5
CHAPTER 4. HARDWARE DESCRIPTION . . . . . . . . . . . . . . . . . . . . 6
CHAPTER 5. TEST FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER 6. CAUTION TO BE USED WHEN CONNECTING
THE RS-232 CABLE. . . . . . . . . . . . . . . . . . . . . . . . . . 15
CHAPTER 7. CIRCUIT DIAGRAM AND PWB LAYOUT . . . . . . . . . 16
Parts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CAUTIONS
THERE IS A RISK OF EXPLOSION IF THE BATTERY
IS REPLACED BY AN INCORRECT TYPE.
PROPERLY DISPOSE OF USED BATTERIES ACCORDING
TO THE INSTRUCTIONS.
ER-A242U
CHAPTER 1. SPECIFICATIONS
■Key names
1. APPEARANCE
Front view
KEY TOP
Rear view
DESCRIPTION
2
Customer display
(Pop-up type)
Paper feed key
RA
Operator display
Received-on account key
RCPT/PO
Printer cover
After receipt issue key/Paid out key
VOID
Receipt paper
Void key
ESC
Error escape key
CONV
Exchange (Currency Conversion)
%1, %2
Percent 1 and 2 key
RFND
Power cord
Refund key
-
Mode switch
Markdown key
@/FOR
Drawer
Multiplication key
•
Keyboard
Drawer lock
Decimal point key
CL
RS-232C connector
Clear key
0-9,00
Numeric Keys
PLU/SUB
Printer
Take-up spool
PLU code entry key
DEPT#
Paper roll cradle
Department code entry key
DEPT SHIFT
CLK#
Paper positioning
guides
Print roller arm
Department shift key
Clerk code entry key
Dept1-32
Print roller
release rever
Department 1- 32 keys
TAX
Manual tax key
Tax 1 SHIFT
Tax 1 shift key
Inner cover
Tax 2 SHIFT
Tax 2 shift key
AUTO
2. RATING
ER-A242
Automatic entry key
CHK
Check key
CH
Charge key
MDSE SBTL
Merchandise subtotal key
Weight
16.3lb (7.4kg)
#/TM/SBTL
Non-add code/Time/Subtotal key
Dimensions
13.0 (W) x 16.9 (D) x 11.0 (H) inches
(330 (W) x 428 (D) x 280 (H) mm)
CA/AT/NS
Cash/Amount tender/Non Sales key
Power source
AC 120V (m 10%), 60Hz
Power consumption
Stand-by 7.7W, Operating 30W (max.)
Working temperature
0°C~40°C (32°F to 104°F)
4. MODE SWITCH
1) LAYOUT
3. KEYBOARD
• Rotary type
1) KEYBOARD LAYOUT
Type
Normal keyboard
Key position
STD/MAX 53
Key pitch
19 (W) x 19 (H) mm
Key layout
Fixed type
VOID
■Keyboard layout
RA %1
RCPT
/PO
–
%2
NUMBER
VOID RFND
DC
SHIFT
ESC
BS
SPACE
•
7
8
4
5
1
2
0
CL
9
6
3
00
PLU
/SUB
4
DEPT
#
DEPT
SHIFT
A
F
K
P
20
24
28
32
B
8
19
3
C
7
18
2
D
E
12
H
6
I
11
J
16
M
10
N
15
O
R
30
14
25
9
Q
31
26
21
5
L
27
22
17
1
G
23
CLK#
S
29
13
T
MGR
X1/Z1
X2/Z2
Operator key (OP)
OP
PGM
@/FOR
MA
REG
OPX/Z
OFF
2) KEY LIST
CONV
Manager key (MA)
MA
OP
TAX AUTO
U
X
TAX1
SHIFT
TAX2
SHIFT
V
Y
The mode switch can be operated by inserting one of the two supplied
mode keys - manager (MA) and operator (OP) keys. These keys can be
inserted or removed only in the “REG” or “OFF” position.
CHK CH
W
Z
MDSE
SBTL
#/TM
SBTL
CA/AT/NS
Note: The small characters on the bottom or lower right in each key
indicates functions or characters which can be used for character
entries for text programming.
ER-A242U
SPECIFICATIONS
–1–
The mode switch has these settings:
OFF:
Operator display
This mode locks all register operations. (AC power turns off.)
No change occurs to register data.
DEPT
OP X/Z: To take individual clerk X or Z reports, and to take flash
reports.
It can be used to toggle receipt state “ON” and “OFF” by
pressing he [RCPT/PO] key.
REG:
To program various items.
VOID:
Enters into the void mode. This mode allows correction after
finalizing a transaction.
MGR:
For manager’s entries. The manager can use this mode for an
override entry.
REPEAT
Amount: Appears in the far-right eight (max.) positions. When the
amount is negative, the minus symbol “-” appears before the
amount.
Number of repeats for repetitive registrations:
The number of repeats is displayed, starting at “2” and incremental with each repeat. When you have registered ten
times, the display will show “0.” (2 3 3 ..... 9 3 0 3 1 3 2 ... )
Receipt function status:
X1/Z1: To take the X/Z report for various daily totals.
The indicator “_” appears in the RCPT OFF position when
the receipt function is in the OFF status.
X2/Z2: To take the X/Z report for periodic (weekly or monthly) consolidation.
Time:
Appears in the far-right six positions (hour-minute - ”A” or
hour-minute - ”P”) in the OP X/Z, REG, or MGR mode. “A” is
displayed in the morning (AM), and “P” in the afternoon
(PM). In the REG or MGR mode, press the [#/TM/SBTL] key
to display the time.
5. DISPLAY
1) OPERATOR DISPLAY
Display device:
LED numeric display
Number of line:
1 line
■Machine state symbols
Number of positions: 10 positions numeric display
Color of display:
Yellow / Green
Character form:
7 segment + DP
Character size:
Numeric 14.2 (H) x 7.9 (W) mm
:
Appears during programming.
:
Appears when an error is detected.
:
Appears when the subtotal is displayed or when the amount
tendered is smaller than the sales amount.
:
Appears when the [CONV] key is pressed to calculate a subtotal in foreign currency.
:
Appears when a transaction is finalized by pressing the [CA/AT/
NS], [CHK] or [CH] key.
Layout:
0 .1.2.3.4.5.6.7.8.9.
:
2) CUSTOMER DISPLAY
Display device:
LED
Number of line:
1 line
Yellow / Green
Style:
Pop up type
Character form:
7 segment + Dp
Character size:
14.2mm (H) x 7.9mm (W)
Appears when the change due amount is displayed.
: May appear in the far-left three positions at the timing of key
entry when the electronic journal (EJ) memory is full. (Depending on programming.)
:
Appears when the voltage of the installed batteries is under the
required level. You must replace with new ones within two days.
:
Appears when the batteries are not installed, or the installed
batteries are dead. You must replace with new ones immediately.
:
May appear right below the eighth and ninth places at the timing
of finalization of a transaction when the electronic journal (EJ)
memory is nearly full.
Also appears right below the tenth place when power save
mode is effective.
:
Appears when the print roller arm is not locked.
Number of positions: 7 positions
Color of display:
Clerk code
DC SHIFT NUMBER
RCPT
OFF
For entering sales.
PGM:
Customer display (Pop-up type)
PLU/SUB
Layout:
3.4.5. 6.7.8.9.
: Appears when the paper is not set or out.
ER-A242U
SPECIFICATIONS
–2–
6. PRINTER
Segment
Display
position
Description
Amount
1-8
Minus sign
2-10
-: Floating
Error
8-10
Exx:xx = error code
PGM Mode
10
1) Printer
• Part number
: M-T53II
• NO. of station
: 1 (Receipt or journal)
• Validation
: No.
F: Light up when a registration is
f inaliz ed by de pres sing CA S H,
CHECK, CHARGE key
• Printing system
: Line thermal
• No. of dot
: 288 dots
P
CASH, CHECK,
CHARGE
10
SUB TOTAL/
short tender
10
o
• Dot pitch
: Horizontal 0.167mm
Vertical
0.167mm
Change
10
C: Light up whenever the change
due amount appears in the display.
• Font
: 10 dots (W) u 24 dots (H)
Currency
Conversion
10
Department
9-10
No zero-suppressed
PLU
7-10
No zero-suppressed
• Printing capacity : max. 24 characters/Line
c: Light up whenever the foreign
amount appears in the display.
Repeat
8
Endless count, starting from 2.
Receipt OFF
9
_
• Character size
: 1.67mm (W) u 4.17mm (H) at 10 u 24 dots
• Print pitch
: Column distance
Row distance
• Print speed
: Approximate 60mm/s (Approximate 12 l/s)
• Paper feed speed : Approximate 60mm/s (Approximate 12 l/s)
DC
_: Double size character entry status
SHIFT
_: Shift character entry status
NUMBER
_: Number character entry status
(Manual feed)
• Reliability
: Approximate 60mm/s (Approximate 12 l/s)
: Mechanism LIFE 6 million lines used to highquality thermal paper
Clerk No.
2, 3
-xx-: clerk number
EJ FULL
8-10
E-E: Light up when EJ memory is
FULL at the timing of key entry (by
PGM selection).
• Paper end sensor : Set up
• Near end sensor : No
Low Battery
10
L:
No Battery
10
L:
2.0mm
5.21mm
• Cutter
: Manual Cutter
2) Paper
• Paper rolldimension: 2.25 m 0.02 inch
57.5 m 0.5mm in width
Decimal Point
Display
position
Decimal point
7-1
TAB
4-1
EJ near full
8, 9
Max. 3.15 inch
Max. 30mm
in diameter
Description
• Paper quality:
High-quality thermal paper
paper thickness:
(by PGM selection)
0.06 to 0.08mm
Nihon seisi thermal paper
TF50KS-E2C
KANZAN thermal paper:
KF50
KSP thermal paper:
P350
3) Logo stamp
• No
4) Printing area
Number of thermal head heater elements 288 dots
(4.75)
48 (288 dots)
(4.75)
print area
(max.24 characters)
0.167
57.5±0.5
(Paper dimension)
ER-A242U
SPECIFICATIONS
–3–
(units : mm)
7. DRAWER
8. BATTERY
[OUTLINE]
1) MEMORY BACK UP BATTERY
• Standard equipment: Yes (1)
For memory back up, the dry battery AA (3 pieces) are needed.
• Max. number of additional drawers: 0
1. Memory holding time:
• The drawer consists of:
Approx. 1 year after New dry batteries are installed.
1) Drawer box (outer case) and drawer
2. Battery exchange method:
2) Money case
When the low battery symbol “L” lights up, replace the batteries (3
AA) by the following method;
3) Coin case
1) Power on the ECR.
4) Lock (attached to the drawer)
2) Mode switch turn to “REG” mode.
[SPECIFICATION]
3) Remove the OLD dry batteries (3 pieces).
4) Insert the NEW dry batteries (3 pieces).
1) DRAWER BOX AND DRAWER
Model name of
the drawer box
Size
5) Confirm the low battery symbol “L” is off.
SJ423
2) LOW BATTERY
(mm) 420 (W) x 427 (D) x 114 (H)
Material
Low battery indication will appear on the left side of display when the
battery voltage is low.
Metal
Bell
—
Release lever
CASE 1: When any numeric entry & any item entry is not done or just
after finalization.
Standard equipment: situated at the bottom
Drawer open
sensor
—
Separation from
the main unit
The machine can indicate the low battery condition. (Always)
CASE 2: When numeric entry or item entry is done.
—
Battery condition will not appear.
Exceptionally, when the power is restored after a power failure, the
low battery condition will appear on the display only when the battery is low.
And the indicator will disappear after any key entry.
2) MONEY CASE
Separation from the drawer
Allowed
Separation of the bill compartments from the
coin compartments
Allowed
Bill separator
Allowed
[Display sample]
Number of compartments
“
5B/6C
0.00”: Battery is OK.
“L 0.00”: Low battery (You have to change the batteries.)
“L 0.00”: No battery (You have to change the batteries immediately.)
Layout:
After finalization
“F 12.34”: Battery is OK.
“L 12.34”: Low battery. (“L” indicate instead of “F”.)
“L 12.34”: No battery. (“L” indicate instead of “F”.)
Note: “NO BATTERY”: When the “NO BATTERY” is display, the master reset is executed at the timing of “POWER
ON” after the “POWER OFF”.
5B/6C
3) LOCK (LOCK KEY : LKGIM7331BHZZ)
Location of the lock: Front
Method of locking and unlocking:
To lock, insert the drawer lock key into the lock
and turn it 90 degrees counter clockwise.
To unlock, insert the drawer lock key and turn it 90
degrees clockwise.
ck
unlo
Lo
SK1-1
SK1-1
Key No:
ck
ER-A242U
SPECIFICATIONS
–4–
CHAPTER 2. OPTIONS
1. OPTIONS (NO)
2. SERVICE OPTIONS (NO)
3. SUPPLIES
NO
1
PARTS CODE
PRICE
RANK
TPAPR6656RC05
BA
PARTS CODE
PRICE
RANK
UKOG-6705RCZZ
BC
NAME
Thermal roll paper
DESCRIPTION
5 ROLLS/PACK 70 φ
4. SPECIAL SERVICE TOOLS
NO
1
NAME
RS-232 Loop-back connector
DESCRIPTION
CHAPTER 3. MASTER RESET AND PROGRAM RESET
1. MASTER RESETTING
2. PROGRAM RESETTING
(INITIALIZATION)
Master resetting clears the entire memory and resumes initial values.
Master resetting can be accomplished by using the following procedure:
This resetting resumes the initial program without clearing memory.
Procedure A: 1) Plugin the AC cord to the wall outlet.
This resetting can be operated at below sequence in PGM mode.
2) Set the mode switch to REG position.
Procedure:
1) Unplug the AC cord from the wall outlet.
3) Let the ECR be witout the memory backup battery.
2) Wait over 1 muinite for discharging.
4) Unplug the AC cord from the wall outlet.
3) Set the mode switch to the PGM position.
5) Wait over 1 minute for discharging.
4) While holding down the FEED key, plugin the AC
cord to the wall outlet.
6) Plugin the AC cord to the wall outlet.
Note: In case power failure occurs when the machine has no battery
attached to it, the master reset operation is automatically performed after the power has been restored.
The master reset can also be accomplished in the following case.
In case power failure occurs when the machine has no battery
attached to it, the master reset operation is automatically performed
after the power has been restored.
(This is because if power failure occurs with no battery attached to
the machine, all the memories are lost and the machine does not
work properly after power recovery; this requires the master reset
operation.)
ER-A242U
OPTIONS
–5–
CHAPTER 4. HARDWARE DESCRIPTION
1. HARDWARE BLOCK DIAGRAM
POWER SUPPLY
STANDARD
DRAWER.
CPU
Data bus
DRIVER , SENSOR
ROM : 256K Byte
RAM : 20K Byte
RAM
Address
bus
128K Byte
POPUP
Seg. DRIVER
PRINTER
M-T53II
FRONT
LED
4 to 16
DECORDER
Dig. DRIVER
PAPER TAKE
UP MOTOR
KEYBOARD
MODE SWITCH
KEY SCAN SIGNAL
KEY RETURN SIGNAL
RS232C
DRIVER
ER-A242U
RS232
HARDWARE DESCRIPTION
–6–
2) Pin description
PQ1CG2032
TRANSFORMER
V0 24V
Pin
No.
Drawer
SYMBOL
SIGNAL
NAME
In/
Out
Function
1
SOUT4
P96
In
Key IN
2
CLK4
P95
In
Key IN
3
TB4IN
P94
In
Key IN
4
TB3IN
P93
In
Key IN
5
SOUT3
P92
In
Key IN
VCC 5V
6
SIN3
P91
In
Key IN
VDD 5V
7
CLK3
P90
In
Key IN
8
BYTE
VDD
In
VDD
ON/OFF Control (MODE SW)
9
CNVss
CNVss
In
Normal : L
VH, VP (8V)
PRINTER HEAD, MOTOR
PAPER TAKEUP MOTOR
10
XCIN
XCIN
In
Calender clock :32.768KHz
Calender clock :32.768KHz
/POFF detect point
PQ1CG2032
VLED 5.7V
Battery
LM2574
+ Tr.
ON/OFF Control (MODE SW,
/POFF, CPU P105)
2. DESCRIPTION OF MAIN LSI’S
Booting : H
11
XCOUT
XCOUT
In
12
/RESET
/RESET
In
Reset
13
XOUT
XOUT
Out
Open
14
Vss
Vss
In
Vss
15
XIN
XIN
In
System clock
16
Vcc
VDD
In
VDD
17
NMI
P85
In
18
INT2
P84
Out
PRINTER/STB2
NU FMC (/RDY)
Not used
INT1
/RDY
In
20
INT0
P-OFF
In
1) Pin configuration
21
TA4IN/U
MOTOR
Out
Paper take up motor drive
22
TA4OUT/U
BUZ1
Out
Buzzer drive
SIN4
AVCC
VREF
AN0
AVSS
AN1
AN2
AN3
AN4
AN5
AN6
AN7
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
P97
VDD
VDD
TH
GND
P101
Vref
P103
P104
P105
LATCH
DTS
D0
D1
D2
D3
D4
D5
D6
D7
P10
P11
P12
P13
PH1
19
2-1. CPU (M30624FGAFP)
SOUT4
CLK4
TB4IN
TB3IN
SOUT3
SIN3
CLK3
BYTE
CNVss
XCIN
XCOUT
/RESET
XOUT
Vss
XIN
Vcc
NMI
INT2
INT1
INT0
TA4IN/U
TA4OUT/U
TB3IN
TBEOUT
TA2INW
M30624FGAFP
D13
D14
D15
A0
A1
A2
A3
A4
A5
A6
A7
VSS
A8
VCC
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
50
58
57
56
55
54
53
52
51
PH2
PH3
PH4
A0
A1
A2
A3
A4
A5
A6
A7
GND
A8
VDD
A9
A10
A11
A12
A13
A14
A15
A16
A17
NC
NC
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
TA2OUTW
TA1IN/V
TA1OUT/V
TB5IN
TB5OUT
TXD1
RXD1
CLK1
CLKS1
TXD0
RXD0
CLK0
/RTS0
/RDY
ALE
/HOLD
/HLDA
CBCLK
/RD
/BHE
/WR
/CS3
/CS2
/CS1
/CS0
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
P74
P73
CLK
P71
DAT
P67
P66
/FRES
P64
FSD
FRD
FSCK
DR1
/RDY
/HOLD
VCC
NC
NC
/RD
NC
/WR
/CS3
/RAS1
BUSY
/ROS1
P96
P95
P94
P93
P92
P91
P90
VDD
GND
XCIN
XCOUT
/RESET
XOUT
GND
XIN
VDD
VDD
CTCRL
/FRDY
P-OFF
MOTOR
BUZ1
P77
P76
P75
ER-A242U
23
TB3IN
P77
In
RS232 :DR
24
TBEOUT
P76
In
RS232 :CS
25
TA2INW
P75
In
RS232 :CD
26
TA2OUTW
P74
Out
RS232 :ES
27
TA1IN/V
P73
Out
Drawer drive 2
28
TA1OUT/V
CLK2
Out
Printer data clock
29
TB5IN
P71
Out
NU FMC (BUSY)
30
TB5OUT
TXD2
Out
Print data
31
TXD1
P67
Out
RS232 :SD
32
RXD1
P66
In
RS232 :RD
33
CLK1
/FRES
Out
NU FMC (/FRES)
34
CTS1/RTS1
P64
Out
RS232 :RS
35
TXD0
FSD
Out
36
RXD0
FRD
In
37
CLK0
FSCK
Out
FMC :Shift clock
38
/RTS0
DR1
Out
Drawer drive 1
39
CLKOUT
/RDY
40
ALE
NC
41
/HOLD
/HOLD
42
/HLDA
NC
In
Out
In
Out
FMC :Send data
FMC :Receive data
/RDY (CGROM)
NOT USE
/BOOT MODE
NOT USE
43
CBCLK
BCLK
Out
BCLK
44
/RD
/RD
Out
Read
45
/BHE
NC
Out
NOT USE
46
/WR
/WR
Out
Write
47
/CS3
CS3
Out
Display segment latch
48
/CS2
/CS2
Out
Chip select :for RAM
49
/CS1
/CS1
Out
EPM Control
50
/CS0
/CS0
Out
Chip select : for ROM
51
A19
A19
Out
Address bus :19
52
A18
A18
Out
Address bus :18
HARDWARE DESCRIPTION
–7–
Power off
Pin
No.
SYMBOL
SIGNAL
NAME
In/
Out
53
A17
A17
Out
Address bus :17
54
A16
A16
Out
Address bus :16
55
A15
A15
Out
Address bus :15
56
A14
A14
Out
Address bus :14
57
A13
A13
Out
Address bus :13
58
A12
A12
Out
Address bus :12
59
A11
A11
Out
Address bus :11
60
A10
A10
Out
Address bus :10
Out
3. CLOCK GENERATOR
Function
1) CPU
12MHz
CPU
A9
A9
VCC
VDD
63
A8
A8
64
VSS
VSS
65
A7
A7
Out
Address bus :7
66
A6
A6
Out
Address bus :6
67
A5
A5
Out
Address bus :5
68
A4
A4
Out
Address bus :4
69
A3
A3
Out
Address bus :3
70
A2
A2
Out
Address bus :2
71
A1
A1
Out
Address bus :1
72
A0
A0
Out
Address bus :0
73
P17
ENA2
Out
Paper feed motor :ENA2
74
P16
ENA1
Out
Paper feed motor :ENA1
75
P15
IN2
Out
Paper feed motor :IN2
76
P14
IN1
Out
Paper feed motor :IN1
77
P13
P13
Out
Key/Display
78
P12
P12
Out
Key/Display
79
P11
P11
Out
Key/Display
80
P10
P10
Out
Key/Display
81
D7
D7
InOut
Data bus :7
82
D6
D6
InOut
Data bus :6
83
D5
D5
InOut
Data bus :5
84
D4
D4
InOut
Data bus :4
85
D3
D3
InOut
Data bus :3
86
D2
D2
InOut
Data bus :2
87
D1
D1
InOut
Data bus :1
88
D0
D0
InOut
Data bus :0
89
AN7
STB1
Out
Printer head strobe
90
AN6
LATCH
Out
Printer data latch
91
AN5
P105
Out
Printer head voltage ON
92
AN4
P104
Out
CG ROM Bank
93
AN3
P103
In
94
AN2
Vref
In
NU Vret
95
AN1
P101
In
Printer head voltage check
96
AVSS
VSS
In
VSS
97
AN0
TH
In
Print head temperature check
98
VREF
VDD
In
VDD
In
Address bus :9
R
330
11
XCOUT
62
Out
13
XOUT
61
In
15
XIN
VDD
X1
32.768KHz
Address bus :8
10
XCIN
VSS
C
18P
C
27P
Two oscillators are connected to the CPU.
The basic clock X2 is supplied from a 12MHz oscillator.
If the CPU was not operating properly, the signal does not appear on
this line in most cases.
The sub-clock X1 generates 32.768KHz which is primarily used to
update the internal RTC (real time clock).
During the standby mode, it keeps oscillating to update the clock and
monitoring the power recovery.
4. RESET CIRCUIT
VDD
MODE SWITCH
SRV' position
VDD
IC
S-80928ANMP
R
CPU
R
11
R
C
/RESET
C
(1) When the mode switch is placed in the “SRV” position, the reset signal is sent to the CPU to reset the hardware.
(2) When VDD t 2.8V, a reset signal is outputted from the reset IC.
(S-80928ANMP)
VBAT
99
AVCC
VDD
In
VDD
100
SIN4
P97
In
Key IN
5. P-OFF CIRCUIT
VCC
R15
2.7K
VLED
R16
9.1KG
R20
2.7K
R19
C14
1uF/50V
R17
56K
0
3
8
5
8
1
2
R18
IC4A
BA10393
4
3.9K
ZD4
MTZJ5.1B
ER-A242U
HARDWARE DESCRIPTION
–8–
7
/POFF
6
IC4B
BA10393
4
C15
0.1uF
P-OFF
The P-OFF signal detects two signals by two comparators and sent to
the CPU.
7. PRINTER CONTROL CIRCUIT
V0 (24V) signal: If the power voltage V0 (24V) falls bellow the specified
level, the P-OFF signal is driver to LOW by the comparator ICAA.
1) Paper feed motor circuit
VLED signal:
VH
If the LED/Logic power voltage VLED falls below the
specified level, the P-OFF signal is driven to LOW by
the comparator IC4B.
VCC
CPU
P14
P15
P16
10uF/50V
A
/A
B
/B
IC13
P17
6. MEMORY CIRCUIT
MOTOR
LB1838M
1) Address map
00000h
Stepping motor control
00400h
The 2-phase, bi-polar stepping motor is driven at a constant voltage by
LB1838M (made by SANYO).
CPU internal RAM
20kbytes
05400h
1 step: 0.087mm
1 dot: 2 steps
CPU port
06000h
/CS3 area
06000h - 07FFFh
Segment latch address
08000h
External S-RAM : 128kbytes
/CS2 area
08000h - 27FFFh
(128kbytes area)
28000h
40000h
No.
CPU port
Signal used
76
P14
IN1
75
P15
IN2
74
P16
ENA1
73
P17
ENA2
Drive step
Driver IC input
(CPU output)
CPU internal ROM
256kbytes
A
B
/A
/B
ENA2 (OUT1) (OUT3) (OUT2) (OUT4)
IN1
IN2
ENA1
1
L
L
H
H
H
H
L
L
2
H
L
H
H
L
H
H
L
3
H
H
H
H
L
L
H
H
4
L
H
H
H
H
L
L
H
STEP
C0000h
Motor drive signal
FFFFFh
2) Print circuit
2) RAM control
Thermal head configuration
As shown in the equivalent circuit in the figure, thermal head consists of
heating elements and head drivers which drives and controls those
heating elements.
Power supply circuit
or
Dry battery
The serial print data input through the DATA IN (D1) is transferred to
the shift register synchronizing with the CLOCK (CP) and stored in the
latch register by the LATCH (LA) signal.
CS2
A0-A16
A0-A16
A0-A16 VCC
VDD
The head conduction signals (print commands 1 ~ 6) turn the gate on to
conduct the heating element corresponding to the print data.
0.1M
D0-7
VDD
D0-7
10K
I/O0-7
/CS2
/CS2
/CS1
150pF
CPU
10K
VCC
/RD
/RD
11
S-RAM
128K byte
IC
/OE
10K
VCC
/WR
/WR
/WE
ER-A242U
HARDWARE DESCRIPTION
–9–
9. DRAWER DRIVE CIRCUIT
Thermal head block daigram
Dot #288
Dot #1
5,6,18,19
VP
9,10,14,15
V0
T400mA/250V
GND
11
DIA
IN4002
CPU
STB1
FB2
C80
0.1u
CN6
FB3
/RTS0
13
F6
DR1
DRAWER
R102
Q9
2SD2212
(38pin)
STB2
1K
FB2, FB3: Jumper Wire
7
Latch register
LAT
16
Shift register
CLK
17
DAT
12
VCC
When the DR1 signal from the CPU is HIGH, Q9 is turned on to operate
the solenoid.
Connector
Thermal head strobe terminals
STB No.
Dot No.
Number of dots
1
1 ~ 144
144
2
145 ~ 288
144
10. BUZZER DRIVE CIRCUIT
8. PAPER TAKE UP MOTOR DRIVE CIRCUIT
VH
470
CPU
R86
M
C79
CPU
CN5
TA4IN/U
MOTOR
(21pin)
TA4OUT/U
BZ
22pin
BZ
MOTOR
R101
Q13
1K
2SD2212
When the pulse signal (about 4KHz) is generated from the CPU, the
buzzer sounds.
When the MOTOR signal from the CPU is HIGH, Q1 is turned on to
operate the motor.
11. KEYBOARD CIRCUIT
P10-13
P10-13
HC138
/S0-9
/S0-7
/S0-9
P10-13
HC138
/S0-7
/S1
/S3
/S4
Paper
feed key
Head up
sensor
Paper end
sensor
/S8-9
Key
Matrix
Mode
Switch
/S0 - 9
/S9
RS232
/CI
signal
P92-97
P92-97
P90
CPU
P91
P91
D0-7
/CS3
D0-7
G1',G2',
G3'G4',G5',
G6',G7
a,b,c,d,e,f,g,dp
74HC374
/CS3
Front
display
A',B',C',D',E',F',G',DP'
Four P10-13 signals from the CPU are converted into 16 strobe signals by two 74HC138 for use in various functions.
ER-A242U
HARDWARE DESCRIPTION
– 10 –
Pop-up
display
1) Keyboard
5) Paper end sensor
Scan signal:
Scan signal:
10 /S0-9 signals
1 /S4 signal
Return signal: 6 P92-97 signals
Return signal: 1 P91 signal
The keys are read by the key matrix following the above signals.
The paper end sensor state is read by the above signals.
Receipt near end sensor
End detected
End not detected
P91
Low
High
2) Mode switch
Scan signal:
8 /S0-7 signals
6) RS232/CI signal detection
Return signal: 1 P90 signal
Scan signal:
The positions are read by the above signals.
Scan
signal
Mode
switch
position
/S0
/S1
SRV
/S2
PGM (OFF)
/S3
/S4
TIME
REG
/S5
/S6
/S7
The RS232/CI signal is detected by the above signals.
MGR X1/Z1 X2/Z2
RS232 /CI signal
/CI signal detected
/CI signal not detected
P91
Low
High
7) Display
3) Paper feed key
Scan signal:
1 /S9 signal
Return signal: 1 P91 signal
Scan signal:
1 /S1 signal
10 /S0-9 signals
The above 10 scan signals are used as the following digit signals.
Return signal: 1 P91 signal
Digit signal:
The paper feed key is read by the above signals.
Scan signal
/S0
/S1
/S2 /S3 /S4 /S5 /S6 /S7 /S8
/S9
4) Head up sensor
Digit signal: G1’
Front
G2’ G3’ G4’ G5’ G6’ G7’ G8’ G9’ G10
’
Scan signal:
Digit signal: G1’
Pop-up
G2’ G3’ G4’ G5’ G6’ G7’
1 /S3 signal
Return signal: 1 P91 signal
Segment signal : Segment signals: a, b, c, d, e, f, g, and DP are output
by the IC:74HC374, using the data bus signal:D0-7
from the CPU as an input signal and the chip select
signal:/CS3 as a latch signal.
The Head up sensor state is read by the above signals.
Head up sensor
Head up detected
Head up not detected
Low
High
P91
12. RS232 CIRCUIT
P75
P66
P67
P74
R2OUT
CD
R2IN
RD
R1OUT
T3IN
T2IN
R1IN
SD
T3OUT
ER
T2OUT
HIN211
CPU
P77
P64
P76
P91
/S9
Q14
R4OUT
T1IN
DR
R4IN
RS
T1OUT
R5OUT
R5IN
R3OUT
R3IN
CS
CI
CD
2
RD
3
SD
4
ER
5
GND
6
DR
7
RS
8
CS
9
CI
D-SUB 9pin connector
IC14
D16
The signals from the CPU are converted by the HIN211 into the RS232 level to input and output them.
ER-A242U
1
HARDWARE DESCRIPTION
– 11 –
CHAPTER 5. TEST FUNCTION
1. TEST ITEMS
2) KEY CODE
1 Key operation
Key turned to PGM. The test items are as follows:
NO.
Code
1
100
Display buzzer test
2
101
Key code
3
102
Printer test
4
104
Keyboard test
5
105
mode switch test
6
106
Printer sensor test
7
107
Clock display test
8
110
Drawer 1 open & sensor test
9
120
External RAM test
10
121
CPU internal RAM test
11
140
CPU internal ROM test
12
160
AD conversion port test
101
Description
13
500
RS232C test
14
550
Sleep mode test
RCPT/PO
2 Test procedure
Display
KEY CODE
3 Check that:
KEY code: Every time a key is pressed, the code of that key is displayed as a decimal number.
When a key is pressed twice or pressed in an incorrect manner, --will be displayed.
4 End of testing
You can exit the test mode by turning the mode switch to a position
other than the SRV mode. The printer prints as follows:
101
3) PRINTER TEST
1 Key operation
2. DESCRIPTION OF EACH DIAGNOSTIC
PROGRAM
102
2 Test procedure
1) DISPLAY BUZZER TEST
Display
1 Key operation
100
RCPT/PO
1 2 3 4 5 6 7 8 9 0
ZZZZZZ
ZZZZZZ
ZZZZZZ
RCPT/PO
----------------ZZZZZ
----------------ZZZZZ
----------------ZZZZZ
2 Test procedure
3 lines of 24 Z's are printed.
Display at operator side
Display at front side
1.2.3.4.5.6.7.8.9.0.
4.5.6.7.8.9.0.
The decimal point will shift in steps of 1 digit from the lower digit to
the upper (every 200 m sec).
3 Check that:
After that, all segments turn on (about 1 sec)
The print is free from contamination, blur, and uneven density.
Display at operator side
Display at front side
8.8.8.8.8.8.8.8.8.8.
8.8.8.8.8.8.8.
4 End of testing
The test will end automatically.
This mode is repeated.
At the same time, the buzzer sounds continuously.
4) KEYBOARD TEST
1 Key operation
3 Check that:
104
RCPT/PO
A) Each position is correctly displayed.
2 Test procedure
B) The brightness of each number is uniform.
The keyboard is checked using the sumcheck data of the key code.
C) The buzzer sound is normal.
4 End of testing
Display
You can exit the test mode by pressing any key. The following is
printed.
1 0 4
KEY CODE
3 Check:
100
A) The content of completion print
ER-A242U
TEST FUNCTION
– 12 –
4 End of testing
3 Check that:
When the test ends normally
When an error occurs
104
E- ~ - 104
“-” blinks and the clock counts up.
4 End of testing
Note: Calculation of key sumcheck data
The hard code (hexadecimal number) at the position (excluding
feed key) where there is an input data contact is added.
However, the end key (CA/AT/NS) is not added.
This data to which hard codes have been added is converted into
a decimal number value, which will become the sumcheck data
that will be entered when the Diag is started.
When any key is pressed, the date and time are printed and the test
mode will terminated.
Display
1 0 6
year month day
hour min sec
8) DRAWER 1 OPEN AND SENSOR TEST
5) MODE SWITCH TEST
1 Key operation
1 Key operation
110
105
XXXXXX - XXXXXX
RCPT/PO
RCPT/PO
2 Test procedure
2 Test procedure
Display
1 0 5
Display
X
1 1 0
X
X: O = DRAWER OPEN
C = DRAWER CLOSED
MODE: _PGM_VOID_OFF_OP X/Z_REG_MGR_X1/Z1_X2/Z2____PGM
x :
1
2
9
3
4
5
6
7
1
3 Check that:
The above x must be read in the correct order. (If the contact is
open, 9 will be displayed.)
A) The drawer opens normally.
B) The sensor correctly indicates the status of the drawer 1.
3 Check:
*On the ER-A242, “C” (CLOSED) is always displayed.
The display during testing and the content of the completion print.
4 End of testing
4 End of testing
When the test ends normally:
When an error occurs:
You can exit the test mode by pressing any key. The printer prints
the following.
105
E- ~ - 105
110
6) PRINTER SENSOR TEST
9) EXTERNAL RAM TEST
1 Key operation
106
1 Key operation
RCPT/PO
120
2 Test procedure
2 Test procedure
Check the status of paper end sensor and head up sensor.
7-segment display:
1 0 6
The standard 128 Kbyte RAM is checked.
The contents of the memory are lost after this test.
RAM(08000H ~ 27FFFH area) is tested in the following procedure:
X Y
3 Check the following:
X:1 - Paper present
O - Out of paper
a) Data in the test area is stored.
Y:1 - Head DOWN
O - Head UP
b) Write “00H”
4 End of testing
c) Read and compare “00H” and then write”55H”
d) Read and compare “55H” and then write”AAH”
You can exit the test mode by pressing any key and the printer prints
the following:
e) Read and compare “AAH”
106
f) Restore stored data.
If an error occurs at a step, the error is printed.
If an error does not occur, the following addresses are checked.
7) CLOCK TEST
1 Key operation
107
RCPT/PO
Addresses to be checked:
10000H , 10001H , 10002H , 10004H , 10008H
10010H , 10020H , 10040H , 10080H ,
10100H , 10200H , 10400H , 10800H ,
11000H , 12000H , 14000H , 18000H ,
20000H
RCPT/PO
2 Test procedure
Displayed digit:
8 7 6 5 4 3 2 1
7-segment display:
Display
hour
min
sec
1 2 0
3 Check:
Blinks at an interval of 0.5 sec.
A) The completion print.
ER-A242U
TEST FUNCTION
– 13 –
4 End of testing
12) AD conversion port
The program ends after printing.
1 Key operation
When the test ends normally.
When the test ends abnormally. Ex- ~ -
120
120
*****
x = 1: Data error
x = 2: Address error
160
2 Test procedure
The test program displays the voltage of each AD port.
1. Head temperature
When an error occurs, the printer outputs the error message and
then the address where the error has occurred in the area ****.
2. Head voltage
3. Battery voltage
10) CPU internal RAM test
160
The test program checks internal RAM of the CPU.
The contents of the memory are lost after this test.
RAM (00400H - 053FFH area) is tested in the following procedure.
13) RS232C test
Install the RS232C loopback connector. (UKOG-6705RCZZ)
a) Data in the test area is stored.
1 Key operation
b) Write “00H”
c) Read and compare “00H” and then write “55H”
500
d) Read and compare “55H” and then read “AAH”
2 Test procedure
e) Read and compare “AAH”
If an error occurs at a step, the error is printed.
If an error does not occur, the following addresses are checked.
Addresses to be checked:
01000H , 01001H , 01002H , 01004H , 01008H
01010H , 01020H , 01040H , 01080H ,
01100H , 01200H , 01400H , 01800H ,
02000H , 04000H
IN PUT
/CI
/CD
OFF
OFF
OFF
ON
ON
OFF
ON
ON
/DR
OFF
OFF
ON
ON
/CS
OFF
ON
OFF
ON
Data communication check
A loopback test of 256-byte data between SD-RD is performed.
DATA: $00 - $FF BAUD RATE: 9600 BPS
1 2 1
3 Check:
7-segment display:
The completion print.
5 0 0
3 Check:
4 End of testing.
The completion print.
The test program ends after printing.
When the test ends normally.
When the test ends abnormally. Ex- ~ -
121
121
4 End of testing
Completion print
RS TEST OK
Error print
RS TEST **NG**ERxx
xx
Contents of the error
01
ER DR error
02
ER CI error
03
RS CD error
04
RS CD error
05
SD RD error
DATA data
06
SD RD error
DATA error/framing error
*****
x = 1: Data error
x = 2: Address error
If an error occurs, the printer outputs the error message and then
the address where the error has occurred in the area ****.
11) CPU internal ROM test
1 Key operation
14) Sleep mode test
RCPT/PO
1 Key operation
2 Test procedure
The test program checks that the checksum of the CPU internal
flash ROM (C0000H - FFFFFH) is correct.
The lower two digits of the checksum should be 10H.(pending)
Display
RCPT/PO
Control signal check
OUT PUT
/ER
/RS
OFF
OFF
OFF
ON
ON
OFF
ON
ON
f) Stored data is restored.
140
XXX
XXX
XXXX
You can exit the test mode by pressing any key.
The printer prints the follwing.
RCPT/PO
2 Test procedure
Display
1 6 0 1
1 6 0 2
1 6 0 3
3 End of testing
1 Key operation
121
RCPT/PO
550
2 Test procedure
The test program checks the system in SLEEP MODE (The display
goes off and the Decimal point comes on) and then waits for any
status change (KEY input or RS PORT change).
1 4 0
3 Check:
The completion print.
3 Check that:
4 End of testing
A) The display goes off (excluding Decimal point)
The test will automatically be terminated and the printer prints as follows:
When the test ends normally.
ROM
When the test ends abnormally. E- ~ ROM
RCPT/PO
140
******** (CPU CODE)
******** (Version)
140
******** (CPU CODE)
******** (Version)
ER-A242U
B) The system turns active when any key is pressed.
4 End of testing
The test program will automatically be terminated and the printer
prints the following.
550
TEST FUNCTION
– 14 –
CHAPTER 6. CAUTION TO BE USED
WHEN CONNECTING
THE RS-232 CABLE
When connecting the RS-232 cable to the ER-A242, be sure to observe
the following condiiton:
Use RS-232 cable (with core) of accessories.
[This is a necessary to support the EMI (Electronics Magnetic
Interface).]
RS-232 CONNECTOR
Use RS-232 cable
(with core) of
accessories.
ER-A242U
CAUTION TO BE USED WHEN CONNECTING THE RS-232 CABLE
– 15 –
A
B
C
6
5
R54
240
X3
1
3
74F32
Vcc:14pin
GND:7pin
2
1
R91
3.3K
8
3
100pF
820
C37
R56
3.3K
R57
VCC
FS781
R55
47K
1
2
3
7
P97
Q
Q
6
5
33
R62
VDD
C39
R58
100K
VCC
91pF
C108
74F74
Q
Q
8
9
10uF/10V,OS
C42
+
VCC
IC11B
12
D
11
CLK
/RDY
0.1uF
C41
2200pF
100
100
100
100
100
100
100
100
VDD
100pF
P100
P101
C107
4.7UF/16V
+
R46
R47
R48
R49
R50
R51
R52
R53
CGBANK
IC15
5
OUT CD
VDD
4
VSS NC
S-80928ANMP
SII
C38
VCC
VBA T
VCC
Vcc:14pin
GND:7pin
74F74
IC11A
2
D
3
CLK
C61
0.1uF
8
7
6
5
VDD
IC7
VDD
XIN
S0
XOUT
S1 FSOUT
VSS
LF
BCLK
1
2
3
4
/RES ET
C60
0.1uF
IC10A
VCC
330pF
C40
R
NOT INSTALL
(ONLY FOR 201S)
/RD
/CS0
202V4/6/7
2
K
IC6
KIA431A
CST12.0MTW
NOT
INSTALL
C36
1000pF
VCC
VCC
R45
10K
/ST B1
/LAT
VPON
100pF*4(C16-C19)
150pF*8(C20-C27)
D7
D6
D5
D4
D3
D2
D1
D0
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AVSS
AN0
VREF
AVCC
SIN4
VCC
P96
P95
P94
P93
P92
P91
P90
6
/RES ET
C62
220pF
202U/A
202V4/6/7
"H":BOOT ON
SHORTPIN
SP1
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC5
M30624
C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27
R37 R38 R39 R40 R41 R42 R43 R44
VCC
10K 10K 10K 10K
R33 R34 R35 R36
10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K
10K 10K 10K 10K 10K 10K 10K 10K
D7
D6
D5
D4
D3
D2
D1
D0
C28 C29 C30 C31 C32 C33 C34 C35
100pF*8(C28-C 35)
ENA1
ENA2
IN1
IN2
KST3
KST2
KST1
KST0
A7
A6
A5
A4
A3
A2
A1
A0
A
VCC
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32
1. MAIN PWB CIRCUIT
18pF
C43
R59
47K
32.768KHz
27pF
C44
R60
330
X1
X2
5
/CS0
/RD
D[0..7]
A[0..19]
/CS0
/RD
VCC
CST12.0 MTW
A0
D0
D1
D2
D3
D4
D5
D6
D7
15
17
19
21
24
26
28
30
16
18
20
22
25
27
29
31
1
44
33
12
14
13
R81
47K
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
+
10K
R87
C57
100pF
0.1uF
C59
4
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A19
VDD
VCC
DR2
P74
P75
P76
P77
/ST B2
VCC
C56
30pF
DAT
C64
3
NOT INSTA LL
+
VCC
PIEZO BZ
B
BZ
+
P64
CLK
D[0 ..7]
A[0..19]
R79
10k
VCC
/CS3
A19
10uF/10V,OS
C63
0.1uF
470
R86
R85
10K
VCC
TP2
3
A[0..19]
D[0 ..7]
ONLY
FOR
201S
R80
47K
MOTOR
/POFF
VCC
CGBANK
P66
P67
/RDY
DR1
/RD
BCLK
/WR
47K 47K 47K
IC12
23
D0
VCC 11
D1
A0 10
D2
A1 9
D3
A2 8
D4
A3 7
D5
A4 6
D6
A5 5
D7
A6 4
D8
A7 42
D9
A8 41
D10
A9 40
D11
A10 39
D12
A11 38
D13
A12 37
D14
A13 36
A14 35
D15/A-1
A15 34
NC
A16 3
NC
A17 2
BHE
CE/CE
A18 43
OE/OE
A19 32
VSS
VSS
LH5388WS(CGROM)
CG ROM
/CS0
/CS2
TP1
150pF
C55
R74
10K
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17 VCC
R73
10K
R82 R83 R84
R78
47K
VCC
XE-A201 : 10uF/10V,OS
XE-A202 : 10uF/16V,AL
C58
/FR ES
FSCK
FRD
FSD
10K 10K 10K
R75 R76 R77
150pF*10(C45-C54)
C45 C46 C47 C48 C49 C50 C51 C52 C53 C54
10K 10K 10K 10K 10K 10K 10K 10K 10K 10K
202U/A
0 R61
4
R63 R64 R65 R66 R67 R68 R69 R70 R71 R72
VCC
CS0
CS1
CS2
CS3
201UC/AC RH-IX201 5BHZZ
WR
BHE
201VCTQ/BCTQ/VCKB RH-I X2016BHZZ
RD
CBCLK
HLDA
201VCKA VHI30624 FGA-1
HOLD
ALE
201S VHI30624F
GA-1
CLKOUT
RTS0
202U/V VHI30624
FGA-1
CLK0
RXD0
FLASH R OM
TXD0
CLKS1
CLK1
RXD1
TXD1
1
D
7
CHAPTER 7. CIRCUIT DIAGRAM AND PWB LAYOUT
8
4
PR
CL
1
10
PR
3
– 16 –
2
CIRCUIT DIAGRAM AND PWB LAYOUT
CL
/FRDY
13
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
D8
D9
D10
D11
D12
D13
D14
D15
A0
A1
A2
A3
A4
A5
A6
A7
VSS
A8
VCC
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
SOUT4
CLK4
TB4IN
TB3IN
SOUT3
SIN3
CLK3
BYTE
CNVSS
XCIN
XCOUT
RESET
XOUT
VSS
XIN
VCC
NMI
INT2
INT1
INT0
TA4IN/U
TA4OUT/U
TB3IN
TBEOUT
TA2INW
TA2OUTW
TA1IN/V
TA1OUT/V
TB5IN
TB5OUT
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
ER-A242U
BUSY
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
D0
D1
D2
D3
D4
D5
D6
D7
2
5
6
9
12
15
16
19
C67
IC9
NC
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
VCC
A15
CS2
WE
A13
A8
A9
A11
OE
A10
CS1
T/O7
I/O6
I/O5
I/O4
I/O3
+
VDD
2
C65
0.1uF
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
D7
D6
D5
D4
D3
A10
A13
A8
A9
A11
A15
VDD
NOT
INSTALL
LP621024D-T 70ns
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
OC
Vcc:20pin
CLK
GND:10pin
74HC374
VCC
IC8
D0
D1
D2
D3
D4
D5
D6
D7
10uF/50V
C66
0.1uF
1
11
3
4
7
8
13
14
17
18
2
a
b
c
d
e
f
g
dp
a
b
c
d
e
f
g
dp
150pF
C70
R90
10K
/RD
1
/CS2
NOT
INSTALL
C69
30pF
VDD
/WR
1/4
NOT
INSTALL
R89
10K
VCC
C68
30pF
VCC
R88
10K
1
A
B
C
D
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 17 –
A
B
C
D
CN3
8
D
G
/S3
/S4
/S5
/S6
/S0
/S1
/S2
/S7
/S8
/RESET
P90
P91
P92
P93
P94
P95
P96
P97
/S9
/VON
a
b
c
d
e
f
g
dp
/S3
/S4
/S5
/S6
PE
7
C74
0.1uF
VLED
/S0
/S1
/S2
/S7
/S8
/RESET
P90
P91
P92
P93
P94
P95
P96
P97
/S9
/VON
a
b
c
d
e
f
g
dp
G
10K
S
/S7
KST0
KST1
KST2
KST3
D
VH
Q6
MTD2955V
C72
0.1uF
HUPS
KRC111S
Q8
2SK2731
S
7
R95
NOT
INSTALL
/VPON
C71
0.1uF
MAX 9A
R93
10KF
VCC
1SS133
D13
P91
Q7
1SS133
D12
R94
10KF
VH
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
34FE-BT-VK-N
/S3
P91
P91
/S4
P101
8
1
2
3
4
5
6
7
8
9
10
11
12
VP
VCC
CN4A
VP
R98
2K
ONLY HOLE
1
2
3
4
5
6
7
8
9
10
11
12
CN 4B
ONLY HOLE
JP1
P100
6
6
R100
4.7K
/S8
/S9
/S0
/S1
/S2
/S3
/S4
/S5
/S6
C96
C97
0.1uF
5
C76
0.1uF
VCC
DAT
VCC
IN1
IN2
ENA1
ENA2
0.1uF
R97
10K
+ C75
47uF
50V VCC
HUPS
16
15
14
13
12
11
10
9
TH
C77
0.1uF
TH
CLK
/B
/A
PE
/STB1
/STB2
/LAT
A
B
74HC138
IC17
A VCC
B
Y0
C
Y1
G2A Y2
G2B Y3
G1 Y4
Y7 Y5
GND Y6
74HC138
16
15
14
13
12
11
10
9
C73
330pF
R96
30KF
IC16
A VCC
B
Y0
C
Y1
G2A Y2
G2B Y3
G1 Y4
Y7 Y5
GND Y6
R99
10K
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
VCC
5
1
IC13
OUT1
OUT2
OUT3
OUT4
VS1
VS2
DR2
P91
/S6
4
F6
D14
VDR
1K
A
/A
B
/B
VDR
FB5
R104
4.7K
C66673
C81
C82
C83
0.1uF
0.1uF
3
FB4
C66673
JUMPER WIRE
FB3
1N4002
D1A
JUMPER WIRE
FB6
5046-03A
2
3
2
1
CN8
3
2
1
5046-03A
CN7
5045-03A
3
2
1
CN6
NOT
INSTALL
C66673
JUMPER WIRE
FB7
C66673
1
2
CN5
B2B-EH-A
2SD2212
Q13
VH
2
C66673
JUMPER WIRE
0.1uF
0.1uF
C80
1K
R101
FB5,FB6,FB7:JUMPER WIRE
C66673
JUMPER WIRE
Q11
2SD2212
VDR
Q10
MOTOR
0.1uF
C79
NOT
INSTALL
JUMPER WIRE
FB2
VH
3
R103
22K
+ C78
10uF/50V
A
/A
B
/B
2SD2212
Q9
1SS133
KRC111S
R105
P91
/S6
1K
R102
8
3
5
12
10
4
11
jumper
T500mA/250V
VO
GND VCONT
GND
LB1838M
IN1
IN2
ENA1
ENA2
VCC
DR1
7
14
6
9
2
13
+ C98
10uF/16V
VCC
VCC
4
2/4
1
RIGHT-ANGLE CON
DRAWER2
RIGHT-ANGLE CON
DRAWER1
STRAIGHT CON
MOTOR
1
A
B
C
D
A
B
C
D
R15
2.7K
NO T
USED
8
R18
3.9K
ZD4
MTZ J5.1B
1uF /50V
2
3
+
-
IC4A
BA10 393
R17
0
VO
OFF - OPEN
ON - GND
R20
2.7K
VCC
0
7
6
5
VLE D
+
-
/VO N
-
C15
0.1uF
6
6
C10
0.1uF
R2 49
33
7
C1
MYLO R
0.033u F
IC4B
BA10 393
R2 45
F1
3.15A
NOT
INSTALL
B2P -VH
1
2
CN 1
MODE SW
P-OFF
1
56K
R19
POWER T RANS
1
2
POWER T RANS
R16
9.1KG
0
R2 44
C14 +
202U/A : 120 V
202V6/7:23 0V-240V
2021V4: 220V-230V
7
+
+
C4 +
ZD3
MTZJ 5.1B
5
5
180 uH
Q4
KRC 106S
R12
51
4
R14
560
R13
10K
<- CLOSE TO
VO
3
VLE D
VO
VO:23.8V
1N40 02
1N40 02
D8
D7
PTZ 6.2A
ZD2
1000 uF/35V
C13
+
C3 +
47 00uF
16V
10 uF/10V,OS
C6
+
REGURATOR
10 00uF
16V
C5
+
<- CLOSE TO
REGURATOR
R7
91 0F
R6
2.7KF
R5
3. 3KF
R4
17.8KF
3
VOUT=1.23X(1+R4/R5)
FMB-G 24H
D2
63uH
IPEAK>12A :100%
L1
0.02uF(M)
C12
RB060L40
D10
220 uH
IPEAK>2.2A
L3
L:OFF
H,OPEN:ON
/VOF F
RB060L40
D6
/VOF F
PQ1C G2032FZ
2
NOT
INSTALL
UD Z4.3B
D11
R11
C11 +
10K
220 uF/50V
IC3
1
HEAT SINK
5
PQ1C G2032FZ
2
R3
18K
with FUSE
R2
10(FUSE)
4
IPEAK>2.2A
L2
/VPON
Q2
KRC 106S
H:OFF
6,8pin:N.C
L:ON
VOUT=1.26X(1+R13/R14)
IC2
1
7
LM 2574
Q1
KT D998
Q1:HEAT SINK
HEAT SINK
24K
R1 14
0
5
IC1
1SS 133
D5
R2 41
R1
22K
220 uF/50V
1SS 133
D4
1SS 133
50V
33 00uF
R1 13
C2
2.2K
D3
Q3
KRA106 S
/POF F
T1.0A L
F3
/VOF F
/POF F
VP ON
CP301
D1
5
1
4
2
3
4
3
8
8
4
8
4
– 18 –
4
CIRCUIT DIAGRAM AND PWB LAYOUT
3
ER-A242U
ZD1
2
33 0uF
16V
C8
+
C9
0. 1uF(M)
R8
220
D9
RB721Q
VCC +5V
VLED +5.8V
PTZ 9.1B
VH
VH +7.86V +/-0.13V
2
1
2
CN 2
VB AT
3/4
1
B2B-XH-A -E(BLUE)
R9 100
3. 3M
R2 46
22K
R10
VDD
VCC
1
A
B
C
D
– 19 –
CIRCUIT DIAGRAM AND PWB LAYOUT
A
B
C
D
8
8
P91
/S9
P76
P77
P75
P66
P67
P74
P64
7
6
21
20
6
7
16
15
14
P9 1
/S9
1SS3 55
Q14
19
P7 6
24
22
P7 7
26
5
C8 6
0.1uF
P7 5
KRC 111S
R2 43
10 K
C8 5
0.1uF
12
8
D16
(BUSY:FOR BOOT)
R2 42
10 K
6
P6 6
P6 7
P7 4
P6 4
R2 47
10 K
7
IC 14
HIN 211
/EN
R5OUT
R4OUT
R3OUT
R2OUT
V-
V+
/SHDN
R5IN
R4IN
R3IN
R2IN
R1IN
T4OUT
T3OUT
T2OUT
T1OUT
VCC
R1OUT
T4IN
T3IN
T2IN
T1IN
C2-
C2+
C1-
C1+
0.1uF
C84
11
VCC
10
10
ER-A242U
5
4
25
1000pF*5
R1 12
100ohm*5
18
C94
R1 11
23
C93
R1 10
27
C92
R1 09
4
C91
+ C88
10uF /50V
VCC
R1 08
C90
0.1uF
C89
C87
0.1uF
4
9
28
1
3
2
17
13
5
3
/CI
/CD
FB12
/C S
FB15
VCC
/DR
FB14
FB13
RD
FB11
/SD
/ER
FB9
FB10
/R S
FB8
EFCB322513TS X 8
3
2
/CI 5V
/DR
/R S
/C S
/CD
RD
/SD
/ER
2
4/4
1
1
2
3
4
5
6
7
8
9
DB R50-09K1300
CN9
1
A
B
C
D
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 20 –
A
B
C
D
7
8
7
ONLY HOLE
1
2
3
4
5
6
7
8
9
10
11
12
CN4D
ONLY HOLE
1
2
3
4
5
6
7
8
9
10
11
12
CN4C
2. PRINTER I/F PWB CIRCUIT
8
6
6
5
5
C201
0.1uF
4
VP
4
VCC
C200
0.1uF
3
3
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
27FMN-BTK-A
A
/B
B
/A
N.C
VP
VP
/LAT
/TH
GND
GND
/STB1
VCC
/STB2
GND
GND
CLK
DAT
VP
VP
N.C
N.C
VCC
LED
PE
HUPS
N.C
CN31
2
2
1
1
1/1
A
B
C
D
1. MAIN PWB LAYOUT
PWB LAYOUT
A. side
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 21 –
B. side
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 22 –
2. KEY INTERFACE PWB LAYOUT
A. side
B. side
3. PRINTER I/F PWB LAYOUT
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 23 –
4. REAR DISPLAY PWB LAYOUT
5. DISPLAY PWB LAYOUT
ER-A242U
CIRCUIT DIAGRAM AND PWB LAYOUT
– 24 –
COPYRIGHT  2006 BY SHARP CORPORATION
All rights reserved.
Printed in Japan.
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted.
In any form or by any means,
electronic, mechanical, photocopying, recording, or otherwise,
without prior written permission of the publisher.
SHARP CORPORATION
Information and Communication Systems Group
Quality Assurance Department
Yamatokoriyama, Nara 639-1186, Japan
2006 March Printed in Japan t