P-28 Idc Sensor (Rear) Failure; P-6: Cyan Imaging Unit Failure; P-7: Magenta Imaging Unit Failure; P-8: Yellow Imaging Unit Failure - Konica Minolta bizhub C650 Service Manual

Field Service Ver. 8.0 Jun. 2008
16.2.4 P-5: IDC sensor (front) failure
16.2.5

P-28 IDC sensor (rear) failure

IDC registration sensor/F (IDCS/F)
IDC registration sensor/R (IDCS/R)
Step
1 Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
2 Change the image transfer belt unit if the transfer belt is damaged.
Reinstall or reconnect IDCS/F or IDCS/R, sensor shutter or connector, if it is installed or con-
3
nected improperly.
4 Clean IDCS/For IDCS/R if it is dirty.
5 Check the HV1 connector for proper connection and correct as necessary.
Open/close the front door, run an image stabilization sequence, and select [State Confirmation]
→ [Level History 1] to check the IDC value.
6
IDC1: IDCS/F, IDC2: IDCS/R
If the value is 1.0 V or less, change IDCS/F or IDCS/R.
7 Change PRCB.
16.2.6

P-6: Cyan imaging unit failure

16.2.7

P-7: Magenta imaging unit failure

16.2.8

P-8: Yellow imaging unit failure

16.2.9

P-9: Black imaging unit failure

Imaging unit /C
Imaging unit /M
Imaging unit /Y
Imaging unit /K
Step
Select [Imaging Process Adjustment] → [D Max Density] and, if the setting value is negative,
1
readjust.
2 Check the drive transmission portion of the Imaging Unit and correct as necessary.
Clean the IDC/registration sensor/F (IDCS/F) or IDC/registration sensor/R (IDCS/R) window if
3
dirty.
4 Clean the contact of the imaging unit connector if dirty.
5 Check the HV1 connector for proper connection and correct as necessary.
6 Change imaging unit.
7 Change the transfer belt unit.
8 Change PRCB.
Relevant parts
Printer control board (PRCB)
High voltage unit/1 (HV1)
Transfer belt unit
Action
Relevant parts
Transfer belt unit
High voltage unit/1 (HV1)
Printer control board (PRCB)
Action
16. Malfunction code
601