Ricoh G133 Service Manual page 253

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller overheat 1 (software error)
The detected fusing temperature stays at 215°C for 1 second.
Defective PSU
Defective IOB
543 A
Defective EGB
Related SC code: SC 553
1. Replace the PSU.
2. Replace the IOB.
3. Replace the EGB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Heating roller overheat 1 (hardware error)
During stand-by mode or a print job, the detected heating roller
temperature reaches 220 °C.
Defective PSU
Defective IOB
544 A
Defective EGB
Defective fusing control system
Related SC code: SC 543
1. Replace the PSU.
2. Replace the IOB.
3. Replace the EGB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
547 D Zero cross error
The zero cross signal is detected three times even though the
heater relay is off when turning on the main power.
SM 4-37
SC Table
G133