Troubleshooting
6
User Manual
6-11
Light and wavy vertical
streaks appear in all colors.
The corona wire is dirty.
Clean the corona wire. See page 4-22.
If several cleaning attempts do not show
improvement, check the test print for the
imaging unit’s system count: if it is near or
past 40,000, you probably need to replace
the imaging unit, which includes a new
corona wire.
Prints are missing fine-line
detail.
The imaging unit is worn out.
Replace the imaging unit.
Dark and uneven vertical
streaks appear in all colors
(most easily visible in yellow).
The imaging unit is worn out.
Replace the imaging unit.
Dark color spots and streaks
appear in all colors.
The imaging unit is worn out. This
symptom occurs more frequently in the
winter or in a dry climate.
Replace the imaging unit.
Troubleshooting and print quality quick reference (cont’d.)
Symptom
Possible Causes
Solution
Print Quality Test Page
Cyan
Magenta
Yellow
Black
Count
Image Unit
1505
Corona
487
Transfer Kit
484
Fuser
0
Print Quality Test Page
Cyan
Magenta
Yellow
Black
Count
Image Unit
1505
Corona
487
Transfer Kit
484
Fuser
0
Cyan
Magenta
