2-242 Service Manual
7510
Partial lack
Step Check Yes No
1 Check the media condition.
Load new, dry, recommended media.
Re-print the defective image.
Does the problem remain?
Go to step 2. Problem solved.
2
Check the four toner cartridges.
Re-print the defective image.
Is the image density normal?
Problem solved. Replace any
empty toner
cartridges.
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 2nd transfer roll assembly for contamination
and wear.
Is the 2nd transfer roll assembly free of excess wear and
contamination?
Go to step 5. Replace the 2nd
transfer roll
assembly.
Go to “2nd
transfer roll
assembly
removal” on
page 4-45.
5
Replace the transfer belt unit assembly. Go to “Transfer
belt unit assembly removal” on page 4-16.
Does the problem remain?
Go to step 6. Problem solved.
6
Check the printhead installation.
Is the printhead assembly installed properly with two
screws?
Go to step 8. Go to step 7.
7
Check the printhead assembly installation.
Install the printhead assembly properly, and perform a
print test.
Does the problem remain?
Go to step 8. Problem solved.
Leading edge
Trailing edge
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