Fip- 1.P11 Background (Fog) - Oki B6500 Troubleshooting Manual

FIP- 1.P11 Background (Fog)

Before commencing troubleshooting, check the paper transfer course. Make sure there is no foreign
articles on the transfer course, such as staples, paper clips, scraps of paper and so on.
Step
Checking EP CARTRIDGE
Install a new EP CARTRIDGE.
1
Carry out a test printing.
Have the background gone?
Checking the image development process
Operate Test Print, and turn off the power of the printer
while printing.
Remove the EP CARTRIDGE with care, and check the
2
toner image formed on the drum, right before the tran-
scribe part (BTR).
Is the image on the drum completely formed?
Is the area clear and black, and easily read?
Checking ROS ASSY
3
Are the connectors on ROS ASSY surely connected?
Checking 150 FEEDER ASSY ground
Remove EP CARTRIDGE.
Check the continuity from the front open part between
4
150 FEEDER ASSY metal part and printer frame metal
part.
Is 150 FEEDER ASSY grounded?
Checking FUSER ASSY ground
Open COVER REAR (PL1.4).
5 Check the continuity between printer frame and the
screw on the back of FUSER ASSY.
Is FUSER ASSY grounded?
Print defect
There is toner stain all over or a part of the page. The
stain appears as very
bright gray stain.
ESS and possible causes
- EP CARTRIDGE
- BTR ASSY (PL8.1.21)
- HVPS/MCU (PL12.1.19)
- GUIDE ASSY CRU R (PL8.1.25)
- ROS ASSY (PL8.1.1)
- PWBA ESS (PL12.1.13)
- 150 FEEDER ASSY (PL5.1.1)
- FUSER ASSY (PL8.1.20)
- 550 FEEDER ASSY (PL7.1.10)
Check
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Chapter 1 Troubleshooting
Yes
End of work Go to step 2.
Go to FIP1.41
Go to step 3.
HVPS/MCU
Reconnect the con-
Go to step 4.
Remove 150
FEEDER ASSY
Go to step 5. and install again for
correct ground.
Go to step [ESS Remove FUSER
and possible ASSY and install
causes]. again. (RRP8.8)
No
nectors.
(RRP5.1)