Canon LBP-860 Service Manual page 176

CHAPTER 6
Control panel LEDs do not light.
Possible caust- Slep
p a n e l
Video
controller PCH
M - 6
Control panel switch malfunction
C o n t r o l p a n e l
Video
6 - 30
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Check
1 Does the problem Improve when you
replace Ihe control panel?
Check
according to Section V of Chapter I?
2 Does the problem improve when you
replace the control panel?
Procedure
Y E S Replace the control panel.
NO
Replace the video controller
PCB.
Procedure
Turn ON/OFF the switches
Chapter ;.
Y E S Replace the control panel.
NO Replace the video controller
PCB.