Ricoh MPC 2800 AT-C2 Mode D'emploi page 437

No. Type
2. Replace the PSU
No. Type
Heating roller thermistor error
• The temperature detected by the heating roller thermistor does not reach 0°C
for 6 seconds.
• The heating roller thermistor detects –5°C for 150 seconds even the
temperature/humidity sensor actually detects 5°C.
• Loose connection of the heating roller thermistor
551 A
• Defective heating roller thermistor
• Defective thermopile
1. Check that the heating roller thermistor is firmly connected.
2. Replace the heating roller thermistor.
3. Replace the thermopile.
No. Type
Heating roller warm-up error 2
After the main switch is turned on or the door is closed, the temperature detected by
the heating roller thermistor does not reach the ready temperature within 125
seconds during fusing unit warm-up.
552 A
• Heating roller fusing lamp broken
1. Check if the heating roller thermistor is firmly connected.
2. Replace the heating roller fusing lamp.
No. Type
Heating roller fusing lamp overheat 2 (software error)
The temperature detected by the heating roller thermistor stays at 230°C or more
for 1 second.
553 A
• Defective PSU
• Defective IOB
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC Tables
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