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Casio 120CR Service Manual
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— 4 —
4.19MHz
32.768
KHz
RESET IC
Winder
Motor
Drawer
DI,DO
CE ,SK
BUZZ
LB
X2
X1
Sa~Sg,G1~G9
KC 0~3
DRW
WMO
RP,PT,Pt
PMO,PHD
KI 0~7
E266-1 PCB
Printer
Keyboard
Mode
Key
Operator
Display
Customer
Display
EEPROM
Buzzer
CPU
Memory Protection
battery Voltage
COM,PGM,
RF,OFF,REG,
CAL,X,Z
3-2.
BLOCK DIAGRAM
5
7
Table of Contents
Service Manual
2
Default Chapter
2
Table of Contents
2
1 Specifications
3
2 Initialize (Mac) Operation
4
3 Block Diagram
5
Pcb Connection
5
Block Diagram
6
4 Disassembly
7
5 Circuit Explanation
10
Power Supply Circuit
10
Reset Circuit
11
Data Communication between CPU and EEPROM
12
Printer Drive Circuit
14
Pin Description (CPU Upd78043Fgf)
14
6 Diagnostic Operations
16
To Start the Diagnostic Operation
16
Check Items
16
Operations
17
7 Error Code List
21
Operation Error Code
21
8 IC Data
22
9 Pcb Layout
23
10 Circuit Diagram
24
11. Parts List
31
11 Parts List
31
Button Block
34
Main PCB Block
34
Others
35
Power Supply Block
35
Printer Block
35
Upper Case Block
35
Button Block
36
Main PCB Block
36
Rear Display Block
36
Others
37
Power Supply Block
37
Printer Block
37
Upper Case Block
37
Drawer : DL-1838 (S Type)
38
DL-2768 (M Type)
41
Printer : M42V
42
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Casio 120CR Specifications
General
Brand
Casio
Model
120CR
Category
Cash Register
Language
English
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