Vertical Lines And Bands (Process Direction) - Lexmark T650 Service Manual

4062

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.
Is the laser beam route free of debris and the glass
window, in the printhead assembly, free of contamination?
4 Check the print cartridge for proper installation.
Is the above component properly installed?
5 Check the transfer roll assembly for contamination and
wear.
Is the above component free of excess wear and
contamination?
6 Check the printhead assembly for proper connection.
Is the above component properly connected?
7 Perform a print test.
Does the problem remain?
2-156
Service Manual
Check Yes
Go to step 2. Problem solved.
Go to step 3. Remove debris or
contamination.
Go to step 4. Remove debris or
clean the
printhead
assembly window.
Go to step 5. Inspect, clean and
reinstall replace
the print cartridge.
Go to step 6. Replace the
transfer roll
assembly.
Go to "Transfer
roll assembly
removal" on
page 4-80.
Replace the Replace the
printhead connections.
assembly.
Go to "Printhead
assembly
removal (T650)"
on page 4-59 or
"Printhead
assembly
removal (T652,
T654, T656)" on
page 4-60.
Contact next Problem solved.
highest level of
tech support.
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