Service Call Conditions
D096 3-8 SM Appendix
546 A
Unstable fusing temperature (center)
The fusing temperature
varies 50°C or more within
1 second, and this occurs 2
consecutive times.
Thermistor defective or out of position
Power supply unit defective
547 B
Zero cross signal malfunction
Zero cross signals are not
detected within 5 seconds
after the main power switch
is turned on, or are not
detected within 1 second
after operation begins.
Power supply board defective
BICU defective
551 A
Fusing thermistor open (rear)
The fusing temperature
detected by the thermistor
is below 71°C and is not
corrected after the main
power switch is turned on.
Fusing thermistor defective or out of
position
Power supply board defective
Loose connectors
552 A
Fusing temperature warm-up error (rear)
The fusing temperature
rises less than 7 degrees in
2 seconds, and this
continues 5 times
consecutively.
The fusing temperature is
not detected in 25 or 35
seconds.
Fusing thermistor defective or out of
position
Fusing lamp open
Power supply board defective