Standards And Adjustments; Checking The Pressure (Nip) Of The Fixing Pressure Roller - Canon iR1200 Series Service Manual

1 Standards and Adjustments

1.1 Checking Against the Standards
Check the machine against the standards as follows:

1.1.1 Checking the Pressure (nip) of the Fixing Pressure Roller

A fixing fault can occur if the nip of the fixing assembly is not correct. The machine is
not equipped with a mechanism to adjust the nip; if a fixing fault occurs, be sure to check
the nip as follows, and replace the fixing assembly if it is not as indicated:
1) Execute 'PRINT test' under 'test mode' in service mode to make a solid black copy on
A4 or LTR paper. (See 3.21.5 of Chapter 2.)
2) With the black side facing down, place the solid black copy in the manual feed tray and
make a copy using manual feed tray.
3) Turn off the power as soon as the leading edge of the paper appears in the delivery tray,
and leave the machine alone for about 10 sec.
4) Take out the cartridge, and remove the paper from the pickup side as if it was a jam.
5) Measure the width of the area of glossy toner on the paper, and see that it is as indicated
in T07-101-01.
Feeding direction
COPYRIGHT © 2002 CANON INC.
Solid black area
Glossy area
F07-101-01
2000 2000 2000 2000
CHAPTER 7 TROUBLESHOOTING
<Using A4 Paper>
297mm
a
b
c
CANON iR1200/iR1300 Series REV. 0 AUG. 2002
7-1