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ER-A570 (serv.man7). ERA570 Service Manual - Sharp ECR Service Manual (repair manual). Page 10

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CHAPTER 4. HARD WARE DESCRIPTION
1. Hard ware block diagram
Fig. 1-1
CPU
GATE ARRAY
MPCA5
TTL SIO
DRAWER
MAX.4
PRINTER M-820
STANDARD
RAM1
128KB
OPTIONAL
RAM2
MAX.128KB
ER-01RA:32KB
ER-02RA:128KB
STANDARD
ROM
512KB
OPTIONAL
ROM
256KB
ER-A57R1
SWITCH
KEY BOARD
SRN
I/F
1 ports
RS232
I/F
2 ports
ER-A5RS
ER-A6IN
OPT CN
A,B
CKDC4
SLIP
PRINTER
M-240
SLIP
PRINTER
I/F
ER-31SP
ER-01MB
ER-02RA
ER-02MB
1 LINE
7DIG   7SEG
1 LINE
16DIG   DOT
CUSTOMER DISPLAY
OPERATER DISPLAY
RAM
BOARD
1MB
RAM
BOARD
128KB~
512KB
by 128KB
 9 
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