Canon 1130 Service Manual page 703

CHAPTER 13 TROUBLESHOOTING
31 E208
Cause
DC power supply
PCB
Connector, wiring
Original scanner
motor driver PCB,
CPU PCB
13-123a 13-6
COPYRIGHT © 2002 CANON INC.
Step Checks
1 Is power present at J380 on the
original scanner motor driver PCB?
Voltage
+5V J380-2
+8.8V J380-4
+12V J380-6
+40V J380-8
2 Is there a fault in the connection
between J602 on the original
scanner motor drive PCB and
J2003 on the CPU PCB?
CANON CLC1100/1130/1150/1160/1180 REV.0 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
NO
(+) (-)
J380-1
J380-3
J380-5
J380-7
YES
NO
Yes/No Action
Check the wiring; if
normal, replace the DC
power supply PCB.
Connect the connectors
properly.
Replace the following
parts in turns:
• original scanner motor
driver PCB
• CPU PCB
(After replacement,
execute the work
under II. H. 1.)