Sc5Xx: Paper Feed And Fusing - Ricoh M052 Service Manual

SC5xx: Paper Feed and Fusing

Main motor lock
The machine does not detect motor lock signal for 250 ms during motor's
500 B
operating.
The machine does not detect motor lock signal for 1 second at rotating the
main motor.
An obstruction has blocked operation of the main motor
Main motor harness loose or broken
Main motor or main motor driver board defective
530 D Exhaust fan error
531 D Duplex exhaust fan error
532 D PSU fan 1 error
533 D PSU fan 2 error
534 D AIO fan error
535 D Controller fan error
The motor lock signal error is detected for 2 seconds after the motor lock
signal was first detected.
Disconnected or defective harness
Defective each fan
541 A Fusing thermistor open (center)
The temperature of the hot roller remained below 0
center of the hot roller.
Fusing thermistor out of its position because of incorrect installation
Fusing thermistor disconnected or defective
542 A Fusing temperature warm-up error (center)
SM
o
C for 7 sec at the
6-9
Service Call Conditions
M052/M053/M054