Ricoh AP-P2 G188, Field Service Manual

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No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
554 A
Heating roller overheat (hardware error)
The heating roller thermistor detects 250°C or more.
• Defective PSU
• Defective IOB
• Defective BCU
• Defective fusing control system
1. Replace the PSU.
2. Replace the IOB.
3. Replace the BCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
557 C
Zero cross frequency error
When the zero cross signal is 66 or more and it is detected 10 times or more in 11
detections, the machine determines that input 60 Hz and SC557 occurs.
• Noise (High frequency)
• Defective PSU
1. Check the power supply source.
2. Replace the PSU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
559 A
Consecutive fusing jam
The paper jam counter for the fusing unit reaches 3 times. The paper jam counter is
cleared if the paper is fed correctly.
This SC is activated only when SP1159-001 is set to "1" (default "0").
• Paper jam in the fusing unit.
Remove the paper that is jammed in the fusing unit. Then make sure that the fusing
unit is clean and has no obstacles in the paper feed path.
3. Appendix: Service Call Conditions
60
3