Vertical Stripes - Lexmark W850n Service Manual

Vertical stripes

Leading edge
Trailing edge
Step Check
1 Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?
2 Are the media transfer route and the media path free of
contamination or debris?
3 Check the toner cartridge.
Install a new toner cartridge.
Re-print the defective image.
Is the image density normal?
4 Check the transfer roll assembly.
Remove the transfer roll assembly.
Is the transfer roll assembly rotating, free of
contamination and wear?
5 Check the PC cartridge installation condition.
Remove the PC cartridge.
Check the PC cartridge connections.
Are the PC cartridge connections free of excess wear
and contamination?
6 Check the PC cartridge ground.
Remove the PC cartridge.
Check the drum grounding plate located behind rear
motor cover. This plate can be found behind the
flywheel.
Is the drum grounding plate free of excess wear and
contamination?
Yes No
Go to step 2. Problem solved.
Go to step 3. Remove debris
or
contamination.
Problem solved. Go to step 4.
Go to step 5. Replace the
transfer roll
assembly.
Go to step 6. Correct and
clean
contaminated
pins, or replace
the PC cartridge
or connector.
Go to step 7. Correct and
clean the drum
grounding plate,
or replace the
PC cartridge.
Diagnostic information
4024-110
2-91