Oki B4100 - Manual (Page 285)

40055101TH Rev.4 285 /
White belts or streakes in
the vertical direction
No
Is the lens surface of the
LED print head dirty?
Yes
No
Solved?
Clean the lens.
Replace the EP unit.
END
Yes
Is the contact plate of the transfer
roller in contact with the contact
assembly properly?
Make proper contact of the
contact plate with the contact
assembly.
Replace the transfer roller
Solved? End.
Is the LED print head installed
properly?
Install the LED print head
prolerly.
Replace the LED print head.
Solved? END.
Replace the PWU-HV Board
No
Yes
Yes
No
No
Yes
No
Yes
Troubleshooting flow chart 13: