Konica Minolta bizhub 4000P Service Manual

bizhub 4700P/bizhub 4000P Service Manual
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4.2.2 Gray background or toner fog on prints
Actions
Yes
No
Step 1
Check the cartridge plunger.
Is the cartridge plunger properly attached to
the front door and is the spring functioning
properly?
Go to step 2.
Replace the cartridge plunger.
See Cartridge plunger
removal.
Step 2
Remove any contamination from the CTLS
contacts. Perform a print test.
Does the problem remain?
Go to step 3.
The problem is solved.
Step 3
Check the CTLS for damage.
Is it free of damage?
Go to step 4.
Replace the printer.
Step 4
Check the transfer roll for surface
contamination or excessive wear.
Is it free of contamination and wear?
Go to step 5.
Replace the transfer roll. See
Transfer roll removal.
Step 5
Check the transfer roll left contact spring for
damage.
Is it free of damage?
Replace the power supply. See
Power supply removal.
Replace the printer.

Konica Minolta bizhub 4000P Specifications

General

Print Technology	Laser
Print Speed	Up to 42 ppm
Resolution	1200 x 1200 dpi
Monthly Duty Cycle	Up to 100, 000 pages
Standard Output Capacity	150 sheets
Memory	256 MB
Supported Operating Systems	Windows, Mac OS, Linux
Duplex Printing	Automatic
Connectivity	USB 2.0, Ethernet
PDL	PCL 6, PostScript 3, XPS
Processor Speed	1.2 GHz