Canon GP200 Service Manual page 239

3. CPU Input/Output Ports of the DC Controller
Address bit
PA0 0
1
2
3
4
5
6
7
PB0 0
1
2
3
4
5
6
7
PC0 0
1
2
3
4
5
6
7
COPYRIGHT © 1996 CANON INC.
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*2* I/O DISPLAY 03
IP PA0 : xxxxxxxx
IP PB0 : xxxxxxxx
IP PC0 : xxxxxxxx
Indication
primary charging DC bias
switching
developing bias DC application
mode
transfer output mode 0
transfer output mode 1
primary charging roller
ON/OFF
static eliminator ON/OFF
laser scanner motor reference
clock
developing AC drive
scanner motor reference clock
(PCB internal signal)
scanner motor CW/CCW rota-
tion (PCB internal signal)
composite power supply PCB
communication signal
zero cross
developing DC drive
Not used.
Not used.
composite power supply PCB
communication signal
Not used.
upper cassette paper detection
0
upper cassette paper detection
1
lower cassette paper detection
0
lower cassette paper detection
1
Not used.
Not used.
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
CANCEL
+
–
OK
Signal Jack
HVPH J102-B9
HADCH J102-B8
HVYM0 J102-B7
HVTM1 J102-B6
HVPDC J102-B5
HVD1 J102-B4
FS J112-8
ACON J102-B3
ACK J102-A6
ZC J102-A8
CDON J102-B2
REQ J102-A7
UCRMN
UCRMN J122-1
LCRMN
LCRMN J122-2
J122-3
J122-4
3. OPERATIONS AND TIMING
Logic
3–185