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Lexmark 7421-036 MX910de

Troubleshooting. Print quality. Skewed print check

Actions Yes No
Step 1
Make sure that the following parts are properly installed:
• Printhead
• Transfer belt
• Developer unit
• Photoconductor
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Enter the Diagnostics menu, and then navigate to:
REGISTRATION > [source tray] > Print Quick Test
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
Check the registration roller for wear or damage, and replace if necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
a Check the registration belt for proper tension, and adjust if necessary.
b Check the registration gear and belt for wear or damage, and replace
if necessary.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
Check the following rollers for wear or damage, and replace if necessary:
• Pick roller
• Feed roller
• Separator roller
• Transport roller
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
a Check the roller belts for proper tension, and adjust if necessary.
b Check the roller gears and belts for wear or damage, and replace if necessary.
Does the problem remain?
Contact the next level of support. The problem is solved.
Error Code
Service Mode, Troubleshooting
Parts Catalog
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