Canon imageRUNNER 330 Service Manual page 457

CHAPTER 14 TROUBLESHOOTING
3 E002, E003 (The Fixing Temperature Error message turns on.)
Cause Step
1
2
Thermistor 3
Wiring 4
Thermal switch 4
Relay 5
DC controller 6
PCB
Image processor 7
PCB
14-58
COPYRIGHT © 1999 CANON INC.
Check
Clear the error in service mode.
When the machine has warmed up,
does any of the following apply?
• The fixing heater fails to
operate.
• E000 is indicated.
Wait until the fixing assembly has
cooled sufficiently; then,
disconnect J426, and measure the
resistance of the thermistor. Is the
reading as follows?
J426 (white harness; TH1): about 0 Ω
J426 (black harness; TH2): about 0 Ω
Is the wiring from the connector
J114 on the DC controller PCB to
the thermistor good?
Replace the thermal switch. Is the
problem corrected?
Replace the relay. Is the problem
corrected?
Replace the DC controller PCB. Is
the problem corrected?
CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
YES See the appropriate
descriptions.
YES Replace the thermistor
unit.
NO Correct the wiring.
YES End.
YES End.
YES End.
NO Replace the image
processor PCB.