CHAPTER 10 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-42
11. "E802" (main switch auto shut-off mechanism)
Action
Replace the main switch.
Correct the wiring.
Replace the control
panel PCB.
Correct the wiring.
Replace the DC control-
ler PCB.
Result
No
No
No
No
Yes
Check
Try operating the main switch by hand.
Does it operate normally?
Check the wiring from the DC controller
PCB (J316-1 and -2) to the control panel.
Is it normal?
Is there electrical continuity from J503-1
to J509-2 on the control panel PCB?
Is the wiring from J509 of the control
panel PCB to the main switch normal?
Procedure
1
2
3
4
Cause/Problem
area
Main switch
(SW1)
Wiring
Control panel
PCB
Wiring
DC controller
PCB
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