
3–9
TROUBLESHOOTING IMAGE PROBLEMS
5
The copy has vertical fogging.
6
The copy has black lines. (vertical, thick, fuzzy)
Cause
Primary charg-
ing roller
Scanner (dirty)
Developing
assembly
Photosensitive
drum
Light (from out-
side)
Step
1
2
3
4
Checks
Clean the charging roller in
user mode. Is the problem cor-
rected?
Clean the mirror, lens, and
dust-proofing glass. Is the
problem corrected?
Is the toner coating on the
developing cylinder even?
Are there scratches on the pho-
tosensitive drum in peripheral
direction?
Yes/No
YES
YES
NO
YES
NO
Action
End.
End.
1. Check the edge of the
developing assembly blade.
2. Dry wipe the surface of the
developing cylinder.
Replace the drum unit.
Check the photosensitive drum
to see if it should be exposed
to light from outside.
Summary of Contents for GP215
Page 4: ......
Page 36: ......
Page 38: ...3 2 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 39: ...3 3 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 40: ...3 4 B Image Fault Samples ...
Page 80: ......
Page 92: ...6 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS C Fans Figure 6 603 FM6 FM5 FM2 FM3 FM1 FM4 ...
Page 105: ...6 19 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 3 Composite Power Supply PCB Figure 6 610 ...
Page 204: ...C GENERAL CIRCUIT DIAGRAM General Circuit Diagram 1 4 A 3 ...
Page 205: ...General Circuit Diagram 2 4 A 4 ...
Page 206: ...General Circuit Diagram 3 4 A 5 ...
Page 207: ...General Circuit Diagram 4 4 A 6 ...