Ricoh MPC 2800 AT-C2, Field Service Manual, Page: 417 / 856

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
492 C
High voltage power: Image transfer/ paper transfer bias output error
An error signal is detected for 0.2 seconds when charging the separation, image
transfer bet or paper transfer roller.
• High voltage leak
• Broken harness
• Defective image transfer belt unit or paper transfer unit
• Defective high voltage supply unit
1. Check or replace the harness.
2. Replace the image transfer belt unit or paper transfer unit.
3. Replace the high voltage supply unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
498 C
Temperature and humidity sensor error 2
• The thermistor output of the temperature sensor was not within the prescribed
range (0.5V to 4.2V).
• The thermistor output of the humidity sensor was not within the prescribed range
(0.01V to 2.4V).
• Temperature and humidity sensor harness disconnected, loose, defective
• Temperature and humidity sensor defective
1. Check the connector and harness.
2. Replace the temperature/humidity sensor.
SC5xx: Paper Feed and Fusing
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
501 B Paper Tray 1 error
502 B Paper Tray 2 error
SC Tables
61
3