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ER-A450T
Sharp ER-A450T Service Manual
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CHAPTER 4. HARDW
ARE DESCRIPTION
1. Hard ware block diagram
Fig. 1-1
CPU
GA
TE ARRA
Y
MPCA7
DRA
WER
ST
A
NDARD
RAM1
256KB
OPTIONAL
RAM2
512KB
ER-03RA:512KB
ST
A
NDARD
ROM
512KB
SWITCH
KEY BOARD
RS232
I/F
1 por
ts
RS232
I/F
CH1
CKDC8
OPC2
1 LINE
7SEG 7DIG
1 LINE
7SEG 10DIG
CUST
OMER DISPLA
Y
OPERA
TER DISPLA
Y
TPRC1
PRINTER
PR-45M
4 – 1
8
10
Table of Contents
Service Manual
1
Default Chapter
1
Table of Contents
1
Chapter 1. Specifications
2
Specifications
3
Chapter 2. Options
6
System Configuration
6
Chapter 3. Service Reset and Master Reset
8
Chapter 4. Hardware Description
9
Power Supply Circuit
30
Chapter 5. Test Function
31
Chapter 6. Down Load Function
38
Chapter 7. Service Precaution
43
Error Code Table
43
Conditions for Soldering Circuit Parts
43
Parts Guide
62
Exteriors
63
Keyboard Unit
65
Packing Material & Accessories
65
Drawer Box Unit (SK423 Type)
67
Main PWB Unit(Include Block6)
69
Front LED PWB Unit
71
G Articles for Consumption
71
Pop up LED PWB Unit
71
PS PWB Unit
71
RS232C PWB Unit
71
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180 pages
Programming Manual
49 pages
Knowledge Book
18 pages
5
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Sharp ER-A450T Specifications
General
Brand
Sharp
Model
ER-A450T
Category
Cash Register
Language
English
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