Chapter 4. Hardware Description - Sharp ER-A460 Service Manual

CHAPTER 4. HARDWARE DESCRIPTION

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