Canon NP6317 Service Manual page 179

13. Adjusting the Fixing Assembly Roller Pressure (adjusting the nip width)
The nip width should conform to the dimension shown in Table 10-201. Adjust the nip width
with the bolts if it is out of standard.
Note:
a and c are 10 mm from both edges of the copy paper.
Measuring the Nip Width
If the rollers are cool, leave the copier ON. Wait for 15 minutes; then make 20 copies, and
measure the nip width.
Measuring Procedure
1) Open the copyboard cover and make an A3 size solid black copy.
2) Set the solid black copy to the multifeeder.
3) Select the service mode C13.
3-1) Detach the VR cover from the rear of the left cover.
3-2) Press the service switch (SW300) on the DC controller PCB.
3-3) Select the service mode C13 using the 10-key or the zoom key.
4) Press the COPY START key.
• The solid black paper is automatically picked up from the multifeeder.
• Then the solid black paper is stopped at the fixing roller and, after a specific period, is deliv-
ered.
COPYRIGHT © 1999 CANON INC.
Direction of
advance of
paper
Figure 10-219
Dimension Measure after the upper and lower rollers have
been adequately heated. (10 blank copies)
b 5.0 ±0.5 mm
|a-c| 0.5 mm or less
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
c
b Center of
A3 size
copy paper
a
Table 10-201
10-15