Ricoh AP-C3, Field Service Manual, Page: 820 / 1334

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
561 A
Pressure roller thermistor error: End
The temperature at the end of the pressure roller measured by the thermistor does
not reach 0°C for 37 seconds.
• Loose connection of the thermistor
• Defective thermistor
1. Check if the thermistor is firmly connected.
2. Replace the thermistor at the end of the pressure roller.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
562 A
Pressure roller thermistor warm-up error: End
The heating roller rotation sensor does not reach 20°C for 100 seconds after the
fusing/paper exit motor has turned on with sheets of 257 mm or more in width.
• Dirty thermopile lenses
• Defective thermistor
1. Clean the thermopile lenses.
2. Replace the thermistor at the end of the pressure roller.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
563 A
Pressure roller overheat: End (software error)
The detected pressure roller temperature stays at 215°C or more for 1 second for
10 consecutive times.
• Defective AC control board
• Defective IOB
• Defective IPU
1. Replace the AC control board.
2. Replace the IOB.
3. Replace the IPU.
6. Troubleshooting
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