Oki ML420 Maintenance Manual page 108

Faint or dark print
6
Is the print head gap set properly?
Yes No
Adjust the printhead gap (see section 5).
Remedied?
No
Replace Printhead.
Remedied?
No Yes
End
Replace Control Board.
Remedied?
No Yes
End
Replace Ribbon feed mechanism.
42113901TH01 Rev.3
Yes
End
Oki Data CONFIDENTIAL
108 /