E802 - Canon NP6621 Service Handbook

TROUBLESHOOTING MALFUNCTIONS
13 E710, E711, E712, E717
Cause Step
1
DC
controller
PCB
14

E802

Cause Step
Composite 1
power
supply PCB
DC
controller
PCB
4–8
Checks
Turn ON/OFF the power switch. Is the
problem corrected?
Checks
Replace the composite power supply
PCB. Is the problem corrected?
Yes/No Remedy
YES End.
NO Replace the DC controller
PCB.
Yes/No Remedy
YES End.
NO Check the wiring from the
composite power supply
PCB to the DC controller
PCB; if normal, replace the
DC controller PCB.