Konica-Minolta bizhub C3350

Printer monocolor: blurred image

Troubleshooting procedure

Step	Section	Check item	Result	Action
1	PH unit	The surface of the PH window is dirty.	YES	Clean with cleaning jig.
2	Imaging unit	Dirty on the outside.	YES	Clean.
3		The problem has been eliminated through the checks of steps up to 2.	NO	• Replace the imaging unit. • Replace the PH unit.

Printer: blank copy, black copy

Troubleshooting procedure

Step	Section	Check item	Result	Action
1	Printhead	A blank copy occurs.	YES	Check printhead connector for proper connection.
2	Imaging unit	Coupling of imaging unit drive mechanism is installed properly.	NO	Check and correct drive transmitting coupling.
				Replace the imaging unit.
3		The PC drum charge corona voltage contact or PC drum ground contact of the imaging unit is connected properly.	NO	Check, clean, or correct the contact.
4	Power supply unit	Connector is connected properly.	NO	Reconnect.
5		The problem has been eliminated through the check of step 4.	NO	Replace the high voltage power supply. Replace the printer control board Replace the PH unit. Replace the MFP board.

Printer monocolor: uneven image

Troubleshooting procedure

Step	Section	Check item	Result	Action
1	Toner cartridge	The toner cartridge is surely installed.	NO	Re-install it.
2	Printhead	The printhead is surely installed.	NO	Re-install it.
3	Toner cartridge	There is any stain or breakage on the drive section of the toner cartridge.	YES	Clean/replace the toner cartridge.
4	Imaging unit	There is any stain, damage or abrasion on the PC drum.	YES	Replace the imaging unit.
5	Transfer roller	There is any stain, damage, deformation or abrasion on the transfer roller.	YES	Replace the transfer roller.
6	Fuser unit	There is any stain, damage, deformation or abrasion on the roller and drive section of the fuser unit.	YES	Replace the fuser unit.
7		The problem has been eliminated through the check of step 6.	NO	Replace the transfer belt unit.