Ricoh D027 Service Manual page 19

SC Tables
No. Type
1.
2.
3.
4.
5.
No. Type
Separation power pack output error
An interrupt checks the status of the power pack every 20 ms. This SC
is issued if the BICU detects a short in the power pack 10 times at
D(ac).
460 D
1.
2.
3.
No. Type
490 D Toner transport motor error
The LOCK signal is not detected for 2 seconds when the transport
motor turns on.
D027/D029 APPENDICES
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Broken +24V fuse on PSU
Defective IOB
Check the connection between the paper transfer unit and PSU.
Replace the paper transfer unit contact sensor.
Replace the paper transfer unit contact motor.
Replace the +24V fuse on the PSU.
Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Damaged insulation on the high-voltage supply cable
Damaged insulation around the high-voltage power supply.
Replace the high-voltage supply cable.
Replace the high-voltage power supply unit.
Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Toner transport motor overload
Disconnected or broken harness
Defective toner transport motor
Opened +24V fuse on the PSU
Defective interlock switch
3-22 SM