Dell 3110cn Service Manual page 199

Try replacing the FUSER
ASSY, the Black Toner
Cartridge, the BELT CRU
and the DRIVE ASSY
MAIN one after another.
Version 4 2008.01.17
Yes
Checking the DRIVE ASSY
MAIN installation
Reseat the DRIVE ASSY
MAIN. (Removal 36/
Replacement 10)
Does the noise
arise from the printer?
Yes
Checked by [Digital
Output]-[DO-0] in [IOT
Diagnosis].
A
Checking the BELT CRU
installation
Reseat the BELT CRU.
Does the noise
arise from the printer?
Checked by [Digital
Output]-[DO-0] in [IOT
Diagnosis].
No
END
Chapter 1 Troubleshooting
No
END