Ricoh D096 Service Manual page 203

Fusing overheat error (rear)
The fusing temperature is
553 A
over 230°C for 1 second
(detected by the
thermistor).
Fusing lamp overheat error (rear)
After the fusing temperature
reaches the target
555 A
temperature, the fusing
lamp does not turn off for 20
consecutive seconds.
Unstable fusing temperature (rear)
The fusing temperature
556 A
varies 50°C or more within
1 second, and this occurs 2
consecutive times.
Jam error detected 3 times in succession
The exit sensor and the
duplex sensor detect a
paper jam 3 times in
559
succession
This condition can occur
when SP 1159 1 is set to
'on'. The default is 'off'.
Left exhaust fan motor error
The CPU detects an
590 B
exhaust fan lock signal for
more than 5 seconds.
SM Appendix
Service Call Conditions
Fusing thermistor defective
Power supply board defective
Fusing thermistor defective or out of
position
Power supply board defective
Thermistor defective or out of position
Power supply unit defective
Paper jams can occur for the following
reasons.
Dampness
Paper curl
Incorrect paper setting in the paper
tray
Stripper pawls coming apart
Loose connection of the exhaust fan
motor
Too much load on the motor drive
3-9 D096