E260; E261 - Canon NP6621 Service Handbook

11

E260

Cause Step
Connector 1 Is there a diaplaced connector or open
(displaced), circuit between the power supply
Harness cooling fan (FM3) in the composite
(open power supply unit and the DC
circuit) controller PCB?
Power 2 Replace the power supply cooling fan.
supply Is the problem corrected?
cooling fan
Composite 3 Replace the composite power supply
power PCB. Is the problem corrected?
supply PCB
DC
controller
PCB
12

E261

Cause Step
Power 1 Turn OFF/ON the power. Is the
supply problem corrected?
frequency
(fluctuation)
Composite 2 Replace the composite power supply
power PCB. Is the problem corrected?
supply PCB
DC control-
ler PCB
Checks
Checks
TROUBLESHOOTING MALFUNCTIONS
Yes/No Remedy
YES Connect the connector or
replace the harness.
YES End.
YES End.
NO Replace the DC controller
PCB.
Yes/No Remedy
YES End.
• However, if the problem is
frequent, advise the user to
provide a frequency safety
device.
YES End.
NO Replace the DC controller
PCB.
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