COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON CLC5000 REV.0 JAN 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-87
3.4.7 The copy has white streaks/white lines (vertical : the sub scanning direction).
1) Generate a halftone test print (PGTYPE=5). Are there vertical
white streaks/white lines?
If in all colors, go to step 11.
If in a specific color, go to the next step.
NO:
Go to step 13.
Developing assembly
2) Check the cylinder of the developing assembly for which white
streaks/white lines are noted. Are there white streaks or other fault?
YES: Check the inside of the developing assembly for foreign matter.
Laser optical path
3) Clean the dust-proofing glass of the laser exposure system. Is the
problem corrected?
YES: End.
4) Clean the lens with a blower brush. Is the problem corrected?
YES: End.
Photosensitive drum
5) Are there scratches in the peripheral direction of the photosensitive
drum?
YES: Clean the photosensitive drum with a cloth coated with toner; if the
scratches are not eliminated, replace the photosensitive drum.
Fixing unit
6) Clean the fixing assembly inlet guide (upper, lower). Is the problem
corrected?
YES: End.
7) Are there scratches or dents in the axial direction of the fixing
roller (upper, lower)?
YES: Remove the cause of the scratches, and replace the fixing roller.
8) Is there a fault in the take-up mechanism of the web and cleaning
operation?
YES: Remove the cause of the fault, and replace the part.
9) Check the fixing assembly separation claw or the separation guide
for an error.
YES: Clean or replace it.
10) Are there scratches or dents on the oil removing blade?
YES: Clean or replace it.
Cleaner lubricant
11) Does the problem occur during installation of the machine or re-
placement of the photosensitive drum?
YES: Suspect uneven cleaner lubricant. See the notes on using the
cleaner lubricant.
Summary of Contents for CLC 5000
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