The Fixing Heater Fails To Operate - Canon ImageRunner 600 Service Manual

83

The fixing heater fails to operate.

Cause Step
Multifeeder
cover
Multifeeder
cover open/
closed sensor
(PS56)
Fixing/feeding
unit releasing
lever sensor
(PS28)
Thermal switch
(TP1)
Relay (RLY1)
Fixing heater
(H1, H2)
SSR
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
1 Is the multifeeder cover closed firmly?
2 Is the multifeeder cover open/closed
sensor mounted properly?
3 Is the fixing/feeding unit releasing lever
sensor mounted properly?
4 Slide out the fixing assembly, and connect
the meter probes to both terminals of the
thermal switch (TP1). Is there electrical
continuity?
5 Replace the relay (RLY1). Is the problem
corrected?
6 Slide out the fixing assembly, and connect
the meter probes to both terminals of the
fixing heater (H1, H2). Is there electrical
continuity?
7 Is the voltage of the connector on the DC
controller PCB about 5 V?
Heater
Main heater (H1)
Main heater (H2)
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
CHAPTER 13 TROUBLESHOOTING
Checks
+
J505-A10
J505-A11
Yes/No Action
NO Close the multifeeder
cover firmly.
NO Mount the sensor
properly.
YES Replace the
multifeeder open/
closed sensor.
NO Mount the sensor
properly.
YES Replace the fixing/
feeding unit releasing
lever sensor.
NO Replace the thermal
switch.
YES End.
NO Replace the fixing
heater.
YES Replace the SSR.
NO Replace the DC
controller PCB.
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