Error Name/Error Condition/Major Cause/Solution
Error Name/Error Condition/Major Cause/Solution
Pressure roller thermistor (center) (TH3) disconnect error
After turning the fusing lamp ON, the pressure roller thermistor (center) has
detected -20 °C or less continuously for 28 seconds.
• Pressure roller thermistor (center) (TH3) disconnected
• Harness connector lose, broken, defective
Enter the SP mode and execute fuser SC reset. Then turn the machine OFF and
ON.
If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1. Re-connect the connector of the pressure roller thermistor (center) (TH3)
harness.
2. Replace the pressure roller thermistor (center) (TH3).
Error Name/Error Condition/Major Cause/Solution
Pressure roller thermistor (center) (TH3) disconnect error: Low voltage
After turning the fusing lamp ON, the pressure roller thermistor (center) has
detected -20 °C or less continuously for 28 seconds. AND the power supply
voltage is lower than specified voltage.
• Pressure roller thermistor (center) (TH3) disconnected
• Harness connector lose, broken, defective
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.
1. Check the input power source and reconnect the cable to the outlet.
2. Re-connect the connector of the pressure roller thermistor (center) (TH3)
harness.
3. Replace the pressure roller thermistor (center) (TH3).
4. If the problem is low voltage, ask the client to connect the machine directly to a
rated power source and to refrain from using extension cords.
Error Name/Error Condition/Major Cause/Solution
No reload temperature of the pressure roller thermistor (center) (TH3)
After turning the fusing lamp ON, the pressure roller thermistor (center) has failed
to reach -40 °C continuously for 30 seconds.
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