Oki B6500 Series, Service Manual

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Chapter 1 Troubleshooting
FIP- 1.P12 Skew
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.
Print defect
The printed image is not paralleled with both sides of the
paper.
ESS and possible causes
- EP CARTRIDGE
- BTR ASSY (PL8.1.21)
- 150 FEEDER ASSY (PL5.1.1)
- FUSER ASSY (PL8.1.20)
- Paper Cassette
- PLATE ASSY BTM (PL2.1.10, PL4.1.10)
- 150 Paper Feeder
- Option 550 Paper Feeder
- PWBA ESS (PL12.1.13)
- 550 FEEDER ASSY (PL7.1.10)
Step Check Yes No
1
Checking the installation place
Check if there is any irregularity on the installation
place.
Check if there is any missing Foot.
Is the setup surface normal?
Go to step 2.
Arrange the instal-
lation place nor-
mally.
2
Checking the paper feeding
Remove the Paper Cassette.
Insert the paper to the Paper Cassette correctly.
Install the Paper Cassette to the printer.
Install PLATE ASSY BTM correctly. (not to incline right
or left) (RRP2.5 and 4.5)
Re-print the problem image.
Does the problem still occur?
Go to step 3. End of work
3
Check the paper transfer course.
Check if there are any stains or obstacles on the paper
transfer course between the paper feeding tray and the
exit tray.
Are there any obstacles on the paper transfer course?
Go to step 4.
Remove the obsta-
cles or stains from
the paper transfer
course.
4
Checking the rolls on the paper transfer course
Check all the rolls on the course, where the paper
transfer between paper feeding entrance tray and exit
tray, and check if there are any stains, wear or dam-
ages.
Check if the pinch roll rotates freely, and the spring
pressure is even.
Are there any stains, wear or damages on the rolls in
the paper transfer course?
Go to step 5.
Replace the dam-
aged or worn-out
rolls. (Refer to cor-
responding RRPs,
for replacement.)
5
Checking EP CARTRIDGE
Install a new EP CARTRIDGE.
Re-print the problem image. Is the image still skew? Go to step [ESS
and possible
causes].
End of work