P-31: Black Pc Drum Sensor Malfunction - Konica Minolta bizhub C250 Service Manual

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Field Service Ver. 1.0 Jul. 2005

P-31: Black PC Drum Sensor malfunction

Black PC Drive Main Sensor (PC15)

Black PC Drive Sub Sensor (PC16)

Perform the faulty sensor check procedure *1.

Check the sensor, for which a faulty condition has been checked, for installed position and

proper connector connection.

Wipe the sensor, for which a faulty condition has been checked, clean of dirt if any.

If P-31 persists, change the Transport Drive Assy.

Change PWB-M.

*1: Faulty sensor check procedure

1. Open the Front Door and turn ON the Main Power Switch of the machine.

2. Call the [Sensor Check] screen to the screen by way of Service Mode.

☞ For details how to display, see "Adjustment /Setting."

3. Close the Front Door and start [Stabilizer].

4. During the Stabilizer sequence, check to see if the values of the phase detection sen-

sors (Black PC Drive Main/Sub Sensors) change.

5. A sensor is faulty if its value does not change.

Relevant Electrical Parts

Transport Drive Assy

Mechanical Control Board (PWB-M)

16. Malfunction code

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