Troubleshooting Malfunctions - Canon GP605 Service Manual

CHAPTER 13 TROUBLESHOOTING
IV . TROUBLESHOOTING MALFUNCTIONS
A.

Troubleshooting Malfunctions

Caution:
When removing or mounting each sensor, be sure to pay attention to the orientation and
position of the spring used to force the detecting lever.
1 E000
Cause Step
Thermistor
DC controller
PCB
Heater
(open circuit)
SSR
13-82
COPYRIGHT © 1999 CANON INC.
1 Clear E000, and turn off and then on the
power switch. Select COPIER>DISPLAY
>ANALOG. Does either FIX-C or FIX-E
indicate a rise in temperature?
2 Turn off the power switch, and cool the
upper fixing roller sufficiently; then, turn
on the power switch.
Clear E000, and turn off and then on the
power switch, and select COPIER>I/O/
>IP in service mode. Is bit 4 and bit 5 of
P012 '0' ?
3 Is electrical continuity of each heater
normal?
Checks
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
YES The cause is the
thermistor; check the
following:
• thermistor for
mounting.
• thermistor surface for
dirt.
• connection.
YES Replace the DC
controller PCB.
NO Replace the heater.
YES Check the wiring; if
normal, replace the
SSR.