The Copy Has Poor Fixing - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
14

The copy has poor fixing.

Cause Step
Upper roller,
Lower roller
Heater
Oil application
Insulating bush,
Bearing
Nip, Thermistor
7-82
COPYRIGHT © 2001 CANON INC.
Checks
1 Is the problem in the same direction
as the feeding direction of the copy?
2 Does the heater (H1, H2) turn ON at
power-on?
3 Is oil applied evenly over the upper
roller of the fixing assembly?
4 Are the insulating bush and the
bearing installed properly?
5 Is the nip between the upper roller
and the lower roller of the fixing
assembly within specification?
Yes/No
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
YES 1. Check the upper/lower
roller of the fixing
assembly for scratches.
2. Check the separation
claw to see if it is
positioned correctly.
NO See "The fixing heater
fails to operate."
NO • Check the oil applica-
tion assembly.
• Check the oil supply
from the oil case.
NO Re-install them.
NO Adjust the nip.
YES Check the thermistor for a
fault.