Konica Minolta bizhub C200 Service Manual page 327

17. Malfunction code
17.2.8 P-12: Black PC drive sensor malfunction
Black PC drive main sensor (PS16)
Black PC drive sub sensor (PS18)
Step
1 Perform the faulty sensor check procedure. *1
Check the sensor, for which a faulty condition has been checked, for installed position and
2
proper connector connection.
3 Wipe the sensor, for which a faulty condition has been checked, clean of dirt if any.
4 If P-12 persists, change the main drive unit.
5 Change PRCB.
*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."
See P.256
3. Close the front door and start [Stabilization].
4. During the stabilization sequence, check to see if the values of the phase detection
sensors (black PC drive main/sub sensors) change.
5. A sensor is faulty if its value does not change.
17.2.9 P-21: Color regist test pattern failure
Transfer belt unit
PH unit
Step
1 Check the flat cable for proper connection and correct as necessary.
2 Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
3 Change the image transfer belt unit if the transfer belt is damaged.
4 Change the PH unit.
5 Change PRCB.
17.2.10 P-22: Color regist adjust failure
IDC registration sensor /MK (IDCS/MK)
IDC registration sensor/CY (IDCS/CY)
Step
1 Slide out the imaging unit and reinstall it in position.
2 Reinstall or reconnect IDCS/MK or IDCS/CY if it is installed or connected improperly.
3 Check the vertical transport guide for installed position and correct as necessary.
4 Change PRCB.
288
Field Service Ver. 1.0 Jun. 2008
Relevant parts
Main drive unit
Printer control board (PRCB)
Action
Relevant parts
Printer control board (PRCB)
Action
Relevant parts
Printer control board (PRCB)
Action