Ricoh G188 Service Manual page 330

Service Call Conditions
No. Type
1.
2.
3.
No. Type
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
1.
2.
3.
No. Type
Pressure roller contact sensor error
Pressure roller contact sensor does not detect the pressure roller
position three times.
569 D
G188/G189
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective PSU
Defective IOB
Defective BCU
Defective fusing control system
Replace the PSU.
Replace the IOB.
Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Broken pressure roller fusing lamp
Defective pressure roller thermistor
Replace the pressure roller fusing lamp.
Replace the pressure roller thermistor.
Replace the PSU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Broken or defective pressure roller contact sensor
Deformed or broken pressure roller contact sensor feeler
Defective pressure roller contact motor
Defective fusing unit
3-34 SM Appendix