Oki C9500 Maintenance Manual page 121

5 Motor fan error
• Does the low-voltage power fan rotate at power ON?
• No Is 34V output to fuse F7 on the engine board (K7N PWB)?
• No Is 34V output to the power connector on the engine board (K7N PWB)?
34V: Pin 12, 13, 14
No Check the cable connections, then replace the low-voltage power unit.
• Yes Replace the engine board.
• Yes Was the low-voltage power board replaced?
• Yes End.
• No Replace the low-voltage power board.
• Yes Does the engine board fan rotate at power ON?
• No Is 34V output to fuse F7 on the engine board (K7N PWB)?
• No Is 34V output to the power connector on the engine board (K7N PWB)?
34V: Pin 12, 13, 14
No Check the cable connections, then replace the low-voltage power unit.
• Yes Replace the engine board.
• Yes Replace the engine board fan.
• Yes End.
41956001TH Rev.6
Oki Data CONFIDENTIAL
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