Vertical Lines And Bands (Process Direction) - Lexmark C950 Service Manual

5058-030

Vertical lines and bands (process direction)

Leading edge
Trailing edge
Step
Check the media condition.
1
Load new, dry, recommended media.
Reprint the defective image.
Does the problem remain?
2 Is the media transfer route and the media path clear of
debris?
Check the LED beam route.
3
Check for debris between the LED printhead assembly and
the PC drum.
Check the four LED printhead assembly windows for
contamination.
Is the LED beam route free of debris and the glass
window, in the LED printhead assembly, free of
contamination?
Check the four PC cartridges for proper installation.
4
Check the PC cartridge connections.
Are the PC cartridge connections free of excess wear
and contamination?
Replace the transfer belt cleaner. Go to
5
cleaner removal" on page
Does the problem remain?
Check the 2nd transfer roller for contamination and wear.
6
Is the 2nd transfer roller free of excess wear and
contamination?
Service Manual
2-228
Check
"Transfer belt
4-172.
Yes
Go to step 2. Problem resolved
Go to step 3. Remove debris or
contamination.
Go to step 4. Remove debris or
clean the LED
printhead
assembly window.
Go to step 5. Correct and clean
contaminated
pins, or replace
the appropriate
PC cartridge or
connector.
Go to step 6. Problem resolved
Go to step 7. Replace the 2nd
transfer roller.
Go to
"2nd
transfer roller
removal" on
page 4-24.
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