Canon iR C6800 Series Service Manual page 401

7.11.11.16 Points to Note
When Replacing the Drum
Heater PCB
Drum memory can occur if the phase of the drum is
changed, as when replacing the drum heater PCB.
Take full care not to change the phase of the drum
during the work by making sure of the following:
1. When detaching the drum flange, check the location
of the marking [2] on the drum flange in relation to the
lot No. label [1] found on the inner side of the drum.
(In the case of the figure, the left of the marking is at
".." and the right is at "..." with the lot No. label facing
upward.)
2. When attaching the drum flange, be sure to fix it in
place with a screw where it was found in step 1.
[1]
[2]
F-7-384
0006-2081
[1]
3. Check the drum phase label [1] attached behind the
process unit cover.
[1]
F-7-385
See the following sample. The cell with a check
mark [1] indicates the present drum phase location. In
this case, the marking [3] is located in relation to the
protrusion [2] of the drum fixing member with its left
at ".." and right at "..." .
1. COPIER > TEST > PG > TYPE = 16
2. COPIER > FUNCTION > INSTALL > AINR-OFF = 1
1 2
3.
4. COPIER > FUNCTION > MISC-P > DR-P-ADJ = OK
5. COPIER > FUNCTION > MISC-P > P-PRINT = OK
6. PASCAL
4 3
[2]
1
4
[3]
F-7-386
Chapter 7
1 2
[1]
2 3
3 4
4 1
2
3
7-135