Canon AS-100M, Field Service Manual

Page: 3 / 136

PREFACE
Differences between first and this version and as shown in following
table:
Model No.
OXXXXX
Model N o .
1XXXXX
Three P.C.B.'s in MAIN UNIT
1. CPU P.C.B.
(1) Basic memory of
256KB
(2) Optional memory
1) Chip expansion
(memory) ....
128KB each
2. I/O CONT P.C.B.
3. CRT CONT-X P.C.B.
Two P.C.B.'s in MAIN UNIT
1. CPU+I/O-CONT P.C.B.
(1) Original Formen CPU+I/O-CONT
(2) Basic memory 128KB
(3) Optional memory
1) Expansion board
(memory) .... 128KB,
256KB or 384KB
2) RS 232C-2 expansion
3) RTC expansion
2. CRT-CONT2-X
(1) Gate array
(2) Option (B/W display)
1) Chip expansion (VRAM)
.... 32KB
(3) Additional functions of
optional memory is for
B/W display
1) Partial high brightness
2) Partial blink
1. Memory chip expansion
128KB
2. RS232C on I/O MOTHER
3. CENTRONICS interface
4. COMMUNICATION interface
5. POINTING DEVICE
1. Memory board expansion 128KB,
256KB or 384KB
2. RS232C on I/O MOTHER
RS232C-2 on CPU+I/O-CONT
3. CNT I/F-2 on I/O MOTHER
(CENTRONICS)
4. SIO on I/O MOTHER
(Communication)
5. VIDEO RAM chip expansion 32KB
for B/W display
6. POINTING DEVICE