Actions Yes No
Step 1
Check if the printer is using a genuine and supported Lexmark
toner cartridge.
Note: If the printer is using a third‑party cartridge, then refer the
users to their cartridge supplier.
Is the printer using a genuine and supported toner cartridge?
Go to step 3. Go to step 2.
Step 2
Install a genuine and supported toner cartridge.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
Remove, and then reinstall the imaging unit.
Does the problem remain?
Go to step 4. The problem is
solved.
Step 4
Replace the imaging unit.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Remove the hot roll fuser, and then check for scratches and other
damage.
Is the fuser free of scratches and other damage?
Contact the next
level of support.
Go to step 6.
Step 6
Replace the hot roll fuser. See
“Fuser removal” on page 452.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Step 7
Remove the fuser, and then check the rollers and belts for damage
or debris.
Are the rollers and belts free of damage or debris?
Contact the next
level of support.
Go to step 8.
Step 8
Replace the fuser. See
“Fuser removal” on page 452.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
4064
Diagnostics and troubleshooting
63
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