E356: TD sensor lower limit detection abnormal
- Definition - [D]
TD sensor output falls below than 0.3 volts during copy cycles.
- Possible Causes -
• TD sensor defective
• Main control board defective
• Toner supply system defective
• TD sensor connector is disconnected.
E405: Transfer belt/drum charge roller position abnormal
- Definition - [B]
The transfer belt contact home position sensor is not activated.
- Possible Causes -
• Transfer belt contact home position sensor defective
• Transfer belt contact clutch defective
• Main control board defective
E440: Main motor lock
- Definition - [B]
A main motor lock signal is detected.
- Possible Causes -
• Too much load on the drive mechanism
• Main motor defective or poor connection
• Main motor control board defective
• Main control board defective
E442: Drum charge thermistor abnormal
- Definition - [D]
The temperature detected by the drum charge thermistor drops below
0 °C or rises above 100 °C.
- Possible Causes -
• Drum charge thermistor open
• Main control board defective
FSM 6-35 FT5535/4527/4522
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