Defective fusing relay
Defective fusing relay circuit
Open +24V fuse on the PSU
Unstable power supply
1. Check the power supply source
2. Replace the +24V fuse on the PSU
3. Replace the PSU
1. Turn the machine main power off/on
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Fuser reload error due to low voltage
In a 100V power supply environment:
1. The fusing temperature increased 6 degrees C or less for 5 times
consecutively within 1.5 seconds.
2. The fusing temperature did not reach 45 degrees C within 11 seconds after the
fusing lamp turned ON.
3. The fusing temperature did not reach the reload temperature within 35 seconds
in a normal/high temperature operational environment, or 55 seconds in a low
temperature operational environment.
4. The fusing temperature was 100 degrees C or more below the target
temperature for 5.2 seconds during the waiting and printing statuses.
In a 200V power supply environment:
1. The fusing temperature increased 9 degrees C or less for 5 times
consecutively within 1.5 seconds.
2. The fusing temperature did not reach 45 degrees C within 14 seconds after the
fusing lamp turned ON.
3. The fusing temperature did not reach the reload temperature within 45 seconds
in a normal/high temperature operational environment, or 65 seconds in a low
temperature operational environment.
4. The fusing temperature was 100 degrees C or more below the target
temperature for 5.2 seconds during the waiting and printing statuses.
Disconnected or defective thermistor
Incorrect input power detected at the main power socket
Heater defective or thermostat circuit disconnected
1. Turn the machine main power off/on.
2. Replace the interface harness of the fuser unit.
3. Replace the fuser unit.
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