Canon iR C3200 Series Service Manual page 804

Chapter 16
16.3.2.4.16 86mm-wide fogging in sub scanning direction
[ Inspected by Canon Inc. ]
Description
This symptom occurs only on copied images, not on a test print or printed images.
Cause
As a result of inspection, the main controller PCB (sub) was found to be faulty.
Field Remedy
1. Execute 'CCD0ADJ' and 'SH-PS-ST' in service mode [COPIER>Function>CCD].
2. If the symptom still recurs, replace the CCD unit and the reader controller PCB with a new one in this order.
3. If the symptom still recurs, this indicates that the reader unit is normal. Replace the DDI-S board with a new
one.
4. If the symptom still recurs, this indicates that the interface between the reader unit and the printer unit is
normal. Replace the main controller PCB (sub) with a new one.
CCD unit:FM2-0023
READER CONTROLLER:FG3-2570
SUB CONTROLLER:FG3-3129
F-16-34
16-30
0003-8743