Canon NP6317 Service Manual page 206

CHAPTER 10 TROUBLESHOOTING
11. "E802" (main switch auto shut-off mechanism)
Cause/Problem
Procedure
area
Main switch 1
(SW1)
Wiring 2
Control panel 3
PCB
Wiring 4
DC controller
PCB
10-42
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?
COPYRIGHT © 1999 CANON INC.
Result
No
No
No
No
Yes
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Replace the main switch.
Correct the wiring.
Replace the control
panel PCB.
Correct the wiring.
Replace the DC control-
ler PCB.