Read Sharp ER-A470 (serv.man2) Service Manual online
CHAPTER 4. HARDWARE DESCRIPTION
1. Hard ware block diagram
Fig. 1-1
CPU
GATE ARRAY
MPCA6
DRAWER
MAX.2
MAX.2
PRINTER DP-730
STANDARD
RAM1
32KB
OPTIONAL
RAM2
MAX.128KB
ER-01RA:32KB
ER-02RA:128KB
ER-02RA:128KB
STANDARD
ROM
256KB
OPTIONAL
ROM
128KB
ER-A46R1
SWITCH
KEY BOARD
RS232
I/F
2 ports
ER-A5RS
OPT CN
CKDC6
1 LINE
7SEG 7DIG
7SEG 7DIG
2 LINE
5 x 7DOT 12DIG
5 x 7DOT 12DIG
5 x
7SEG 10DIG
CUSTOMER DISPLAY
OPERATER DISPLAY
I/R
UNIT
UNIT
ER-01RK
Other ECR
Other ECR
– 10 –
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