Vertical Lines And Bands (Process Direction) - Lexmark C93x Service Manual

5057-XXX

Vertical lines and bands (process direction)

Leading edge
Trailing edge
Step
1 Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?
2
Is the media transfer route and the media path clear of
debris?
3
Check the laser beam route.
Check for debris between the printhead assembly and the
PC drum.
Check the four printhead assembly windows for
contamination.
Is the laser beam route free of debris and the glass
window, in the printhead assembly, free of contamination?
4
Check the four PC cartridges for proper installation.
Check the PC cartridge connections.
Are the PC cartridge connections free of excess wear and
contamination?
5
Check the 2nd transfer roll assembly for contamination and
wear.
Is the 2nd transfer roll assembly free of excess wear and
contamination?
6 Replace the transfer belt unit assembly. Go to
belt unit assembly removal" on page
Does the problem remain?
7
Check the printhead assembly.
Replace the printhead assembly.
Go to
Does the error continue?
2-132
Printer Service Manual
Check
"Printhead assembly removal" on page
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
"Transfer Go to step 7.
4-16.
Go to step 8.
4-95.
Yes No
Problem solved.
Remove debris or
contamination.
Remove debris or
clean the
printhead
assembly window.
Correct and clean
contaminated
pins, or replace
the appropriate
PC cartridge or
connector.
Replace the 2nd
transfer roll
assembly.
Go to "2nd
transfer roll
assembly
removal" on
page 4-35.
Problem solved.
Problem solved.