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ER-A490 (serv.man2). ERA490 Service Manual - Sharp ECR Service Manual (repair manual). Page 10

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CHAPTER 4. HARDWARE DESCRIPTION
1. Hard ware block diagram
Fig. 1-1
CPU
GATE ARRAY
MPCA6
DRAWER
PRINTER PR-58M
STANDARD
RAM1
32KB
OPTIONAL
RAM2
MAX.512KB
ER-03RA:512KB
ER-02RA:128KB
STANDARD
ROM
512KB
OPTIONAL
ROM
128KB
ER-A49R1
SWITCH
KEY BOARD
RS232
I/F
2 ports
ER-A5RS
OPT CN
CKDC6
1 LINE
7SEG   7DIG
2 LINE
5 x 7DOT 12DIG
7SEG  10DIG
CUSTOMER DISPLAY
OPERATER DISPLAY
I/R
UNIT
Other ECR
or ER-02FD
TPRC1
x2
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