Konica-Minolta bizhub 4052

Printer: blurred image

Troubleshooting procedure

Step	Section	Check item	Result	Action
1	Imaging unit	Dirty on the outside.	YES	Clean.
2			NO	Replace the imaging unit.
				Replace the printhead.

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 power supply unit.
				Replace the printhead.
				Replace the MFP board.

Printer: 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 printhead.