The Fixing Heater Fails To Operate - Canon NP6260 Service Manual

CHAPTER 11 TROUBLESHOOTING

55. The fixing heater fails to operate.

Cause Step
Thermal switch
(TP1)
Fixing heater
(H1, H2)
AC driver PCB
DC controller
PCB
11-114
COPYRIGHT © 1997 CANON INC.
Checks
1 Slide out the fixing assembly, and
connect the probes of the tester to
both terminals of the thermal
switch (TP1). Is there electrical
continuity?
2 Slide out the fixing assembly, and
connect probes of the meter to
both terminals of the fixing heater
(H1, H2). Is there electrical conti-
nuity?
3 Is the voltage between the
connectors on the DC con-troller
PCB indicated in the table 5 V?
Heater
Main heater (H1)
Sub heater (H2)
CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
YES/NO
(+) (–)
J102-B5 J102-B1
J102-B3 J102-B1
Action
NO Replace the thermal
switch.
NO Replace the fixing
heater.
YES Replace the AC driver
PCB.
NO Replace the DC con-
troller PCB.