Ricoh MPC 2800 AT-C2 User Manual

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
547 D
Zero cross error
• The zero cross signal is detected three times even though the heater relay is off
when turning on the main power.
• The zero cross signal is not detected for 2 seconds even though the heater relay
is on after turning on the main power or closing the front door.
• The detection error occurs twice or more in the 11 zero cross signal detections.
This error is defined when the detected zero cross signal is less than 45.
• Defective fusing lamp relay
• Defective fusing lamp relay circuit
• Unstable power supply
1. Check the power supply source.
2. Replace the PSU
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
551 A
Pressure roller thermistor error
The temperature measured by the pressure roller thermistor does not reach 0 °C for
6 seconds.
• Loose connection of pressure roller thermistor
• Defective thermopile
• Defective pressure roller thermistor
Related SC code: SC 541
1. Check that the pressure roller thermistor is firmly connected.
2. Replace the thermopile.
3. Replace the pressure roller thermistor.
3. Appendix: Service Call Conditions
72
3

Ricoh MPC 2800 AT-C2 Specifications

General

Brand	Ricoh
Model	MPC 2800 AT-C2
Category	All in One Printer
Language	English