Lexmark T650n Service Manual page 187

Step
7 Perform a print test.
Does the problem remain?
Horizontal white stripes or bands (side to side direction)
Leading edge
Trailing edge
Step
1 Check the media condition.
Load new, dry, and recommended media.
Re-print the defective image.
Does the error continue?
2 Are the media transfer route and the media path free of
contamination and debris?
3 Check the toner level.
Is the toner level normal?
4 Check the transfer roll assembly for contamination and
wear.
Is the above component free of excess wear and
contamination?
5 Check the printhead assembly for proper connection.
Is the above component properly connected?
Check
Check
Yes
Contact next Problem solved.
highest level of
tech support.
Yes
Go to step 2. Problem solved.
Go to step 3. Remove debris or
contamination.
Go to step 4. Replace the print
cartridge.
Go to step 5. Replace the
transfer roll
assembly.
Go to
roll assembly
removal (T650,
T652, T654)" on
page
Replace the Replace the
printhead connections.
assembly.
Go to "Printhead
assembly
removal (T650)"
on page 4-48 or
"Printhead
assembly
removal (T652,
T654)" on
page 4-49.
Diagnostic information
4062
No
No
"Transfer
4-74.
2-155