Gray Background Or Toner Fog On Prints - Konica Minolta Bizhub 4700P Service Manual

4.2.2

Gray background or toner fog on prints

Actions
Step 1
Check the cartridge plunger.
Is the cartridge plunger properly attached to
the front door and is the spring functioning
properly?
Step 2
Remove any contamination from the CTLS
contacts. Perform a print test.
Does the problem remain?
Step 3
Check the CTLS for damage.
Is it free of damage?
Step 4
Check the transfer roll for surface
contamination or excessive wear.
Is it free of contamination and wear?
Step 5
Check the transfer roll left contact spring for
damage.
Is it free of damage?
bizhub 4700P/bizhub 4000P Service Manual
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Replace the power supply. See
Power supply
- 30 -
No
Replace the cartridge plunger.
See
removal.
The problem is solved.
Replace the printer.
Replace the transfer roll. See
Transfer roll
Replace the printer.
removal.
Cartridge plunger
removal.