Kyocera FS-C1020MFP

Appendix: Troubleshooting Guide
28
Zero Cross Error
The zero cross signal is not detected for three seconds even though the fusing
lamp relay is on after turning on the main power or closing the front door.
547
 Defective fusing lamp relay
1. Turn the main power switch off and on.
 Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
issue this SC code and cannot be operated.
Low Temperature Error
The center thermistor detects 100°C or less for 4 seconds.
548
 Defective fusing lamp
 Defective thermistor
1. Replace the fusing unit.
2. Replace the fusing lamp.
 Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
issue this SC code and cannot be operated.
Zero Cross Frequency Error
The detection error occurs ten times consecutively in ten zero cross signal
detections. This error is defined when the detected zero cross signal is 17 or
less/27 or more for 0.2 seconds.
557
 Defective fusing lamp relay
 Unstable input power source
1. Check the power supply source.
2. Replace the fusing unit.