Ricoh D027 Service Manual page 34

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller thermistor error
The temperature measured by the thermistor does not reach 0 °C for
37 seconds.
561 A
Loose connection of the thermopile
Defective thermopile
1. Check if the thermistor is firmly connected.
2. Replace the thermistor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller temperature error
The temperature of the pressure roller does not reach the ready
temperature for 120 seconds after the fusing lamp has turned on.
562 A
Defective thermistor
Defective fusing lamp
1. Replace the thermistor for the pressure roller.
2. Replace the fusing lamp.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller overheat 3 (software error)
The detected pressure roller temperature stays at 215°C or more for 1
second.
Defective PSU
563 A
Defective IOB
Defective BICU
1. Replace the PSU.
2. Replace the IOB.
SM 3-37
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SC Tables
D027/D029 APPENDICES