2-234 Service Manual
7510
Vertical lines and bands (process direction)
Step Check Yes No
1 Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the error continue?
Go to step 2. Problem solved.
2
Is the media transfer route and the media path clear of
debris?
Go to step 3. Remove debris or
contamination.
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?
Go to step 4. Remove debris or
clean the
printhead
assembly window.
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?
Go to step 5. Correct and clean
contaminated
pins, or replace
the appropriate
PC cartridge or
connector.
5
Check the 2nd transfer roll assembly for contamination and
wear.
Is the 2nd transfer roll assembly free of excess wear and
contamination?
Go to step 6. Replace the 2nd
transfer roll
assembly.
Go to “2nd
transfer roll
assembly
removal” on
page 4-45.
6
Replace the transfer belt unit assembly. Go to “Transfer
belt unit assembly removal” on page 4-16.
Does the problem remain?
Go to step 7. Problem solved.
7
Check the printhead assembly.
Replace the printhead assembly.
Go to “Printhead assembly removal” on page 4-104.
Does the error continue?
Go to step 8. Problem solved.
Leading edge
Trailing edge
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