Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
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3.4.8 The copy has horizontal streaks/horizontal fogging (the main scanning
direction).
1) Generate a halftone test print (PGTYPE=5). Are there vertical
white streaks/white lines?
If in all colors, go to step 6.
If in a specific color, go to the next step.
NO: Go to step 4.
Photosensitive drum
2) Are there scratches or dirt in the peripheral direction of the axis of
the photosensitive drum?
YES: Replace the photosensitive drum.
Paper lint collecting plastic sheet
3) Is the symptom a black line noted 188mm from the leading edge of
the image?
YES: Replace the paper lint collecting plastic sheet located in the regis-
tration roller assembly.
Power supply voltage, Scanning lamp, Lamp regulator
Original exposure system, CCD
4) Does the scanning lamp flicker?
YES: 1. Check the voltage of the power supply for fluctuations.
Use an exclusive power outlet.
2. Check the scanning lamp and the lamp regulator.
NO: Check the No. 1/No. 2 mirror mount for wobbling. Check the con-
tact between the CCD and the CCD driver.