Oki C9600 Service Manual page 199

6 Motor Fan error
• Check the fan in question using the motor & clutch test in the self-diagnosis mode.
• Does the fan rotate?
• NO
• YES
• NO
• YES
• NO
• NO
• YES Are the cables connected properly? (All the cables between the Motor Driver PCB and
the fan are included. If it is the Power Supply Fan, all the cables between the Engine
PCB and the fan are included.)
NO
• YES Is 20V or more output to the Pin 3 of the DC0 connector on the Motor Driver PCB?
NO
• YES Replace the fan.
Is the alarm not activated during regular operation after power is turned on?
YES
• NO Replace the Motor Driver PCB (replace the Power Supply PCB if it is the Power Supply
Fan). Does the fan rotate properly?
YES
• NO Replace the Engine PCB.
42930511TH Rev. 2
Are the cables connected properly? (All the cables between the Motor Driver
PCB and the fan are included. If it is the Power Supply Fan, all the cables
between the Engine PCB and the fan are included.)
NO Connect the cables properly.
Is foreign substance or a cable caught?
YES Remove the caught substance or cable.
Is 20V or more output to the Pin 3 of the DC0 connector on the Motor Driver
PCB?
NO Replace the Low-Tension Power Supply PCB.
Replace the fan.
Does the fan rotate properly?
YES End
Replace the Motor Driver PCB (replace the Power Supply PCB if it is the
Power Supply Fan). Does the fan rotate properly?
YES End
Replace the Engine PCB.
Connect the cables properly.
Replace the Low-Tension Power Supply PCB.
End
End
Oki Data CONFIDENTIAL
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