Oki B6500

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Chapter 1 Troubleshooting
FIP- 1.P4 Vertical blank lines (White stripes in paper transport direction)
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
There are some extremely faint or completely non-
printed parts. Those non-printed
parts cover a wide area vertically, along the paper feed-
ing direction.
ESS and possible causes
- EP CARTRIDGE
- BTR ASSY (PL8.1.21)
- 150 FEEDER ASSY (PL5.1.1)
- ROS ASSY (PL8.1.1)
- PWBA ESS (PL12.1.13)
- FUSER ASSY (PL8.1.20)
- Heat Roll
- Pressure Roll
- 550 FEEDER ASSY (PL7.1.10)
Step Check Yes No
1
Checking the paper condition
Have new, dry and recommended paper on.
Re-print the problem image. Does the problem still
occur?
Go to step 2. End of work
2
Checking the paper transfer course
Check if there are any stains or obstacles on the paper
transfer course between the paper feeding entrance
and the exit.
Are there any obstacles on the paper transfer course?
Go to step 3.
Remove the obsta-
cles or stains from
the paper transfer
course.
3
Checking the laser beam course
Make sure there is no obstacle between ROS ASSY
and Drum.
Are there any obstacles on the laser beam course?
Check if any stains on ROS ASSY window.
Go to step 4.
Remove all the
obstacles from the
laser beam course
and/or clean ROS
ASSY window.
4
Checking EP CARTRIDGE
Install a new EP CARTRIDGE.
Re-print the problem image.
Does the problem still occur?
Go to step 5. End of work
5
Checking BTR ASSY (PL8.1.21)
Remove BTR ASSY. (RRP8.10)
Check if any stains and/or wear on BTR ASSY.
Are there any stains and/or wear on BTR?
Go to step 6.
Replace BTR
ASSY. (RRP8.10)