Canon iR7086, Service Manual

Page: 369 / 735

Chapter 9
9-13
F-9-25
9.5.2.2 Mounting the Fixing Upper Roller
0010-9390
iR7105 / iR7095 / iR7086
Mount the upper roller by reversing the steps used to remove it.
a. To prevent the surface of the roller from dirt or damage, wrap paper after
removing it.
b. Be sure that the longer cutoff A shown in the figure is toward the rear.
F-9-26
c. When mounting, clean the electrode plate [1] and the electrode terminal
[2].
F-9-27
9.5.3 Lower Fixing Roller
9.5.3.1 Removing the Lower Fixing Roller
0010-9393
iR7105 / iR7095 / iR7086
1) Remove the fixing assembly from the main body.
2) Remove the fixing cleaning belt; then, clean and detach the oil pan.
3) Open the upper fixing unit.
4) Remove the two screws [1], and detach the lower separation claw sup-
port plate [2].
F-9-28
5) Remove the lower roller [3] from the fixing assembly, and remove the E-
rings [4] and the bearings [5] from both front and rear.
F-9-29
9.5.3.2 Adjusting the Lower Roller Pressure (nip)
0010-9395
iR7105 / iR7095 / iR7086
The nip width must be as indicated in figure; if not, adjust it using the pres-
sure adjusting nut.
F-9-30
a and c are points 10 mm from both edges of paper.
T-9-2
a. Generating Output for Nip Width Measurement
Wait for 15 min after the copier ends its warm-up period; make 20 A4 copies,
and measure the nip.
1) Place A3 copy paper in the manual feed tray.
[4]
[3]
[5]
[2]
[1]
A
[2]
[1]
Dimension Measure with upper and lower rollers fully heated
b 200 V: 9.0 -/+ 0.5 mm,
208/230 V: 10.0 -/+ 0.5 mm
| a-c | 0.5 mm or less
[1]
[2] [1]
[3]
[5]
[4]
Feed
direction
c
a
Middle
of paper
b
A3 paper