Ricoh D0C8, Service Manual

Page: 697 / 1647

SC9xx: Others
SM 6-123 D0CA/D0C9/D0C8/D0CB
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No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
1.
Replace the BiCU (PCB1).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC940-85 D
Load SW (5V_IO): Overcurrent Detection
The load SW has detected and limited overcurrent.
One of the following units or the harness connected to it has shorted:
• BiCU (PCB1)
• ID Chip (PCB3)
• Paper End Sensor(bypass) (S6)
• ITB lift HP sensor (S33)
• Registration Sensor (S24)
• Duplex Entrance Sensor (S1)
• 1-Bin Tray Exit Sensor
• Paper Feed Sensor (S31)
• Tray Lift Sensor (S35)
• Duplex Exit Sensor (S2)
• Paper Exit Sensor (S7)
• Fusing Entrance Sensor (S3)
• Fusing Exit Sensor (S8)
• Bypass Tray Lift Sensor (S4)
• Bypass Paper Width Sensor (S5)
• Fusing Thermopile (TH1)
• Waste Toner Full Sensor (S36)
• Tray Paper End Sensor (main unit) (S30)
• Paper Transport Sensor (S1)
• Key Card Option
Check whether the SC occurs by removing each of the CN523, CN525,
CN527, CN543, CN559, and CN570 connectors from the BiCU (PCB1) and
turning the main power OFF and then back ON.
SC does not occur:
1.
Check whether the SC occurs by pressing each of the above mentioned
connectors and turning the main power OFF and then back ON in order
to identify the malfunctioning part. Then replace the malfunctioning
harness or electrical component.
SC occurs:
1.
Replace the BiCU (PCB1).