Background (Fog) - Lexmark MB790MFP Service Manual

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Background (fog)

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
Check the media transfer route.
Is the media path free of contamination or debris.
3
Check the print cartridge for proper installation.
Is the above component properly installed?
4
Check the transfer roll assembly for contamination and
wear.
Is the above component free of excess wear and
contamination?
5
Check the HVPS card assembly for proper connection.
Is the above component connected properly?
6
Check the printhead installation.
Is the above component properly installed?
7
Perform a print test.
Does the problem remain?
Check
Yes
No
Go to step 2.
Problem solved.
Go to step 3.
Remove debris
or
contamination.
Go to step 4.
Inspect, clean
and reinstall
replace the print
cartridge.
Go to step 5.
Replace the
transfer roll
assembly.
Go to
"Transfer
roll assembly
removal" on
page
4-56.
Go to step 6.
Replace the
connections.
Go to step 7.
Reinstall and
adjust the
printhead
assembly.
Go to
"Printhead
assembly
removal" on
page
4-34.
Contact next
Problem solved.
highest level of
tech support.
Diagnostic information
7462
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Mb780Mps5500

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