Action Yes No
Step 1
Check the media condition. If necessary, load new, dry,
recommended media, and then reprint the defective image.
Does the problem remain?
Go to step 2. Problem is solved.
Step 2
Check the media transfer route, and remove debris or
contamination if necessary.
Does the problem remain?
Go to step 3. Problem is solved.
Step 3
Check the print cartridge for spots or other damage on the drum
surfaces, and replace the print cartridge if necessary.
Does the problem remain?
Go to step 4. Problem is solved.
Step 4
Check the charge roll assembly for contamination and wear. If
necessary, replace the charge roll assembly. Go to
“Access door
removal” on page 270.
Does the problem remain?
Go to step 5. Problem is solved.
Step 5
Check the transfer roll assembly for contamination and wear. If
necessary, replace the transfer roll assembly. Go to
“Transfer roll
assembly removal” on page 314.
Does the problem remain?
Go to step 6. Problem is solved.
Step 6
Check the heat roll and pressure roll for contamination or cracks.
If necessary, remove the fuser unit assembly. Go to
“Fuser unit
assembly removal” on page 331.
CAUTION—HOT SURFACE: Allow the fuser unit assembly
to cool down.
Does the problem remain?
Go to step 7. Problem is solved.
Step 7
Check the printhead installation. If necessary, reinstall and adjust
the printhead assembly. Go to
“T650 printhead assembly
removal” on page 334 or “T652, T654, and T656 printhead
assembly removal” on page 336.
Does the problem remain?
Go to step 8. Problem is solved.
4062
Diagnostic information
50
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