C0F (Sensor Malfunctions), C3500 (Black Developing Unit Malfunction), C3F90 (T-Base Failure - Minolta CF910 Service Manual

(6) C0F (Sensor Malfunctions), C3500 (Black Developing Unit Malfunction),
C3F90 (T-Base Failure)
C0F30 [ATDC Sensor (C) Low Density Failure] to C0F39 [Multi-Copy Cycle Developing
Efficiency (Bk) High Density Failure]
C3500 (Black Developing Unit Failure)
For these troubleshooting procedures, see "4-3. Troubleshooting Procedure by Particular
Image Quality Problem" (pp. T-55 to T-92).
C3F90 (T-Base Failure)
• Master Board PWB-I
• Transfer Drum Reference Position Sensor
1 PC20
<Troubleshooting Procedure>
Step
Is the wiring between PWB-I and PC20/
PC28 intact?
Possible Defective Components
Check Item
T-47
• Transfer Drum Reference Position Sensor
2 PC28
Result
YES Change PC20/PC28.
NO Reconnect the connectors.
Action