Ricoh D096 Service Manual page 202

Service Call Conditions
546 A
547 B
551 A
552 A
D096
Unstable fusing temperature (center)
The fusing temperature
varies 50°C or more within
1 second, and this occurs 2
consecutive times.
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.
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 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.
Thermistor defective or out of position
Power supply unit defective
Power supply board defective
BICU defective
Fusing thermistor defective or out of
position
Power supply board defective
Loose connectors
Fusing thermistor defective or out of
position
Fusing lamp open
Power supply board defective
3-8 SM Appendix