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CE-T300
Casio CE-T300 Service Manual
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— 5 —
4-2. BLOCK DIAGRAM (CE-T300)
Address
Latch
Address bus A8 - A19
A0 -A7
Data bus D0 -D7
RAM1
HY628100A
LLG-70
(128 K bytes)
CPU
uPD784215GC-175-8EU
Flash ROM 1
LH28F016SCT
-L95
(2 M bytes)
Data buff
er
I/O selector
Printer
driver circuit
Thermal Pr
inter
L
TP4242B-C432
(Receipt side)
LED driver and K
ey control
LED display
LED customer
display
K
eyboard
COM1
Driver
MAIN PCB E479-1 B
Thermal Pr
inter
L
TP4242B-C432
(Journal side)
Auto paper cutter
ACU2224C-A
RAM3
(Option)
HM628512ALP-7
512 K bytes
(RAM-610)
Flash pack (Option)
Memory cassette RAC-9
6
8
Table of Contents
Service Manual
2
Default Chapter
2
Table of Contents
2
Ce-T300
3
Specifications
3
Initialize (Mac) Operation
5
F-Init (Fmac) Operation
5
Block Diagram
6
To Open the Upper Case
8
Circuit Explanation
10
Power Supply Circuit
10
Reset and Power down Circuit
11
CPU Description
12
Momory Chip Selection Circuit
14
Flash ROM1 Address Circuit
15
Memory Map
15
Printer Drive Circuit
16
RS232C Port COM1 Circuit
17
Keyboard Selection Switch (Not Mounted for CE-T300)
17
Flash ROM Pack Circuit (Memory Cassette RAC-9)
17
To Mount Optional Circuit
18
Clerk Key Circuit
18
Multi-Drawer Circuit
20
Paper Near End Sensor Circuit
21
Diagnostic Operation
22
To Start the Diagnostic Program
22
Check Item
22
Operation of each Test
22
Switch Status Test
23
Individual Function Test
24
To Exit the Diagnostic Mode
34
Error Code List
35
IC Data
36
Block Diagram
40
Pcb Layout
47
Circuit Diagram
49
Parts List
67
Explode View
68
Main Pcb Block
70
Button Block
71
Customer Display Block
71
Main Display Block
71
Power Supply Block
72
Clerk Key Block
73
Clerk Switch Circuit
73
Lower Case Block
73
Printer Block
73
Upper Case Block
73
Others
74
Drawer
75
DL-2766 (M Type) Europe,Saudi-Arabia, Other Countries
75
DL-2767 (M Type) UK, Germany
77
DL-3617 (L Type) Saudi-Arabia
79
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Casio CE-T300 Specifications
General
Brand
Casio
Model
CE-T300
Category
Cash Register
Language
English
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