Image Drum Up/Down Operation Error - Oki C5100 Maintenance Manual

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4 Image Drum Unit (ID) Up/Down Operation Error
• Power the printer off and, after a few seconds, on again.
• Are all the ID drums properly revolving during printing?
• NO
• YES Is 24V being output to the F1 of the engine board?
• YES Replace the engine board after checking cable connection.
• YES
NO
• YES
NO
• YES
42049001TH Rev.1
Does the ID motor (C) have a rated resistance (approx. 3.5Ω)?
NO Replace the ID motor(C).
NO Replace the low voltage power unit.
Is ID up-and-down operation being performed (is the operation performed by ID UP/DOWN
on motor and clutch testing)?
Replace the gear assys - planet L and R.
Does the ID up/down sensor work properly? (Check the signals on the high voltage power
unit CN3, pin 2.)
Are: 5V with the sensor light unshielded; and
0V with sensor light shielded
being output?
Replace the high voltage power unit.
Replace the engine board after checking the cable connection between the high voltage
power unit and the engine board (RSN PWB)
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