Oki B 4100 Maintenance Manual page 280

Troubleshooting flow chart 7:
Images are light or blurred as a whole.
40055101TH Rev.4
Is toner low?
No
Is paper of OKI
specified grade?
Yes
Are fingerprints or dirts
adhering or moisture-
absorbing to the paper?
No
Is the lens surface of the
LED print head dirty?
No
Is the LED print head
installed properly?
Yes
Is the contact plate of the transfer
roller in contact with the contact
assembly properly?
Yes
Replace the transfer roller,
EP unit or Power Supply Unit.
Yes
Supply toner.
No
Use paper of OKI
specified grade.
Yes
Replace the paper.
Yes
Clean the lens.
No
Install the LED print head
properly.
Make proper contact of the
No
contact plate of the transfer
roller with the contact
assembly.
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