Canon NP6317 Service Handbook page 23

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14. Adjusting the Fixing Assembly Roller Pressure (adjusting the nip width)
The nip width should conform to the dimension shown in Table 2-1. 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.
Direction of
advance of
paper
Measure after the upper and lower rollers have
Dimension
been adequately heated. (10 blank copies)
b 5.0 ±0.5 mm
|a-c| 0.5 mm or less
CHAPTER 2 STANDARDS AND ADJUSTMENT
c
b Center of
A3 size
copy paper
a
Figure 2-20
Table 2-1
2-13