Action Yes No
Step 2
a Make sure that the cartridge or photoconductor is properly installed.
b Make sure that the cartridge or photoconductor cables are properly
connected.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
Check the cartridge or photoconductor contacts for damage, and replace
if necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
Check the controller board pins for damage, and replace if necessary. See
“Controller board removal” on page 356.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
Mismatched paper size service check
Action Yes No
Step 1
a Make sure that the tray paper length and tray paper width guides are
properly installed.
b Check the guides for wear or damage, and replace if necessary.
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Check the paper width and paper length sensor actuators for damage, and
replace if necessary.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Reseat the paper width and paper length sensor cables.
b Check the cables for damage, and replace if necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
Check the paper width and paper length sensors for damage, and replace
if necessary.
Does the problem remain?
Go to step 5. The problem is solved.
7421
Diagnostic information
136