Fixing Assembly-Related Parts; Points To Note When Replacing The Fixing Heater; Adjusting The Nip (Fixing Pressure Adjusting Nut) - Canon 1000 Service Manual

I. Fixing Assembly-Related
Parts
1 Points to Note When Replac-
ing the Fixing Heater
• Do not touch the surface of the heater.
Neither fixing heater (upper/lower)
has any specific front/rear orientation.
REF.
2 Adjusting the Nip (fixing pres-
sure adjusting nut)
• Check to make sure that the nip width is as
indicated in Table 7-204.
If not, turn the adjusting screw to adjust.
Feeding
direction
Figure 7-280
COPYRIGHT © 2001 CANON INC.
b
a
Center of
paper
c
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
b and c represent points 10 to 15 mm
from the edges.
Dimension
a 7.5 ±0.5 mm
| b–c | 0.5 mm or less
b–a
0.5 mm or less
c–a
* Taken when the upper and lower rollers are suf-
ficiently heated.
Measuring the Nip Width
If the fixing rollers are cool, wait until the
standby period is over, wait an additional 15 min,
and make 20 copies before taking measurements.
Taking Measurements
1) Start service mode.
2) Select 'NIP-CHK' of 'FUSER' under 'FUNC'.
3) Select 'NIP-CHK=1'.
4) Press the Start key to execute. (The operation
will stop automatically.)
Measurements*
Table 7-204
7-41