Ricoh Aficio SP C232DN Field Service Manual page 114

3. Appendix: Troubleshooting Guide
High Temperature Detection Error
This SC is issued if one of following conditions occurs:
• The thermistor (center) detects 255°C or thermistor (end) detects 245°C.
• The thermistor (center) detects a 3°C increment or more for five seconds at 220°C or more
or the thermistor (end) detects a 4°C increment or more for five seconds at 210°C or more.
543
• Defective I/O control (EGB)
• Defective EGB
3
1. Replace the EGB
• Execute "Engine Maintenance Menu" to recover the printer after completing the recovery
procedure. Otherwise, the printer continues to issue this SC code and cannot be operated.
Heating Lamp Full-Power Error
The fusing lamp is fully-powered for a certain time while the fusing unit stays in the stand-by mode
and is not rotating.
• Deformed thermistor
• Thermistor not in the correct position
545
• Defective fusing lamp
1. Replace the fusing unit.
2. Replace the fusing lamp.
• Execute "Engine Maintenance Menu" to recover the printer after completing the recovery
procedure. Otherwise, the printer continues to issue this SC code and cannot be operated.
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.
• Defective fusing lamp relay
547
1. Turn the main power switch off and on.
• Execute "Engine Maintenance Menu" to recover the printer after completing the recovery
procedure. Otherwise, the printer continues to issue this SC code and cannot be operated.
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