Oki ML420 Maintenance Manual page 107

Oki impact printer maintenance manual
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Smearing/missing dots
5
Does ALARM LED blink and display alarm?
No
Yes
Replace Printhead.
Remedied?
No
Yes
End
Replace Control Board.
Remedied?
No
Yes
End
Replace Carriage cable or Space motor assy.
42113901TH01 Rev.3
See Tables 6.2 and 6.3 for troubleshooting information.
Oki Data CONFIDENTIAL
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