Ricoh M016 Service Manual page 154

Service Call Conditions
SC 5xx (Motor and Fusing Error)
Main motor error
The machine does not detect a main motor lock signal within 2sec after the main
motor started to rotate.
-or-
The machine does not release a main motor lock signal within 2sec after the main
motor switched off.
-or-
The machine detects a main motor lock signal every 100ms for seven times
500
consecutively, after the main motor started to rotate stably.
Overload of
Torque load overload
Defective main motor
Disconnect or defective motor harness
1. Turn the machine's main power off, and then on.
2. Check or replace the main motor if the torque load is normal.
3. Replace the motor harness.
Fusing Fan Motor Error
The FAN lock signal – High for 10 seconds, after the fan motor started to rotate.
530
Disconnected or defective motor harness.
1. Turn the machine's main power off, and then on.
M016/M017 6-4 SM