Ricoh G133 Service Manual page 259

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
The thermistor detects 220°C or more.
Defective PSU
Defective IOB
Defective EGB
Defective fusing control system
1. Replace the PSU.
2. Replace the IOB.
3. Replace the EGB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Pressure roller fusing lamp consecutive full power 3
When the fusing unit is not running in the ready condition, the pressure
roller fusing lamp keeps ON full power for 180 seconds or more.
565 A
Broken pressure roller fusing lamp
1. Replace the pressure roller lamp.
2. Replace the PSU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
IH inverter zero cross frequency error
The zero cross signal is not detected for 1 second or more after the IH
inverter has turned on.
Disconnected CN983 on the IH inverter
580 D
Defective IH inverter
Defective IH coil unit
1. Check CN983 on the IH inverter.
2. Replace the IH inverter.
3. Replace the IH coil unit.
SM 4-43
SC Table
G133