Service manual

SC Tables
D127/D128 6-10 SM
No.
Definition
Symptom Possible Cause
490 B
Toner bottle motor overcurrent
Detecting "Low" for more than
200msec while the motor on.
Motor locked up due to overcurrent
to the drive section.
 Defective the motor drive.
500 B
Main motor error
Detecting “High” condition twenty
times in series during watching
each lock signal after switching
motor on.
 Overload
 Defective main motor drive
541 A
Fusing thermistor disconnection
Detecting the temperature remains
lower than 0 degrees Celsius for 5
seconds.
 Thermistor disconnection
 Defective connector part
542 Fusing reload failed
-001 A
Fusing temperature warm-up error
 The fusing temperature doesn’t
rise by more than 7 degrees for
two seconds; and this happens
5 times consecutively.
The measure is start in 3.5 seconds
after activation of the heater.
This monitoring will stop in the case
of reaching the reload temperature.
 Defective thermistor
 Power source is out of warranty