Oki ML421 Maintenance Manual - Page 105
Replace Power Supply Board.
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Oki Data CONFIDENTIAL 3 Homing does not end normally Yes No Check around space motor to repair the mechanism. (Space rack, ribbon feed assembly back up roller, carriage frame, support protector and ribbon protector.) Remedied? No Yes End Replace Space motor assy. Replace Space motor assy. Remedied? No Yes End Replace Carriage cable. Remedied? No Yes End Replace Control Board. Remedied? No Yes End Replace Power Supply Board. 42113901 Rev.2 105 /
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42113901
Rev.2
105 /
Oki
Data
CONFIDENTIAL
3
Homing does not end normally
Yes
No
Check around space motor to repair the mechanism.
(Space rack, ribbon feed assembly back up roller, carriage frame, support
protector and ribbon protector.)
Remedied?
No
Yes
End
Replace Space motor assy.
Replace Space motor assy.
Remedied?
No
Yes
End
Replace Carriage cable.
Remedied?
No
Yes
End
Replace Control Board.
Remedied?
No
Yes
End
Replace Power Supply Board.