Ricoh M022 Service Manual page 671

No. Type
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.
547 D 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
Heating roller thermistor error
The temperature at the end of the heating roller measured by the heating roller
thermistor does not reach 0°C for 7 seconds.
• Loose connection of pressure roller thermistor
551 A
• Defective heating roller thermistor
Related SC code: SC 541
1. Check that the heating roller thermistor is firmly connected.
2. Replace the heating roller thermistor.
CÓPIA NÃO CONTROLADA
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Details (Symptom, Possible Cause, Troubleshooting Procedures)
CÓPIA NÃO CONTROLADA
SC Tables
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