41388601TH Rev.2 116 /
6 Fan Motor Error
• Does the fan of the low-voltage power supply unit rotate after the printer is turned on?
• Yes Does the error recur after the fan of the low-voltage power supply unit has been replaced?
• Yes Replace the low-voltage power supply unit.
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• No End
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• Yes Does the engine board fan rotate after the printer is turned on?
• No Is +32V supplied to the FAN connector Pin 1 on the engine board (K73 PWB)?
• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check cable connection or replace the low-voltage power supply unit.
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• Yes Replace the engine board.
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• Yes Replace the fan of the engine board.
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• Yes Does the fuser fan rotate after the printer is turned on?
• No Is +32V supplied to the JOBOFF connector Pin 5 on the engine board (K73 PWB)?
• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check cable connection, or replace the low-voltage power supply unit.
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• Yes Replace the engine board.
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• Yes Replace the fuser fan.
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• Yes End
