Canon PC920 Service Manual page 366

E0_BUCK
JP101
JP102
R150
ZER_CRS
D183 C181
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
+24VU
Q126
1
3
2
3 2 1
2
1 D118
Q125
R140
R145
C123 R139
R271
ZER_CRS_LEVEL
Q153
+5V
1
IN B VDD
2
8
- R154
1 2
IN A
3
+
R149 Q107 3
4
VSS OUT X
C126
R148
+5V
R278
VR104
+5V
E0_DT
R279
VR105
+5V
+5V
R158
5
ZER_CRS_EDGE
C167
2
4
3
Q131
R275
1
C183
DC Controller Circuit Diagram (5/8)
+5V
RGAD_VR
2 2
VR106
R294 R292
+5V
2 BL_VR 2
VR107
R293 R382
4
SW101
3
(AB/inch type only)
2
1
+5V
LS_VR
1 CP23
1
CPGND1
OP_VR
+5V
R144
D_L_2
D_L_1
R143
A-11