Action Yes No
Step 4
Run a print test.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
Replace the toner cartridge
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
Check the gears on the cartridge gearbox for proper rotation and for wear
or damage.
Does it rotate properly and is it free of wear or damage?
Go to step 7. Replace the cartridge
gearbox. See
“Cartridge gearbox
removal” on page
183.
Step 7
Check the cartridge gearbox cable for proper connection to the controller
board.
Is it properly connected?
Go to step 8. Reseat the cable.
Step 8
Check the cartridge gearbox cable for damage.
Is it free of damage?
Replace the controller
board. See
“Controller
board removal” on
page 187.
Replace the cartridge
gearbox. See
“Cartridge gearbox
removal” on page
183.
171 errors
171 error messages
Error code Description Action
171.03 Fuser fan error. Go to
“Cooling fan service check” on page 94.
171.04 Fuser fan error.
171.05 Fuser fan error.
171.06 Fuser fan error.
171.07 Fuser fan error.
4514
Diagnostic information
93
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