Description: Polygon motor error
The polygon motor does not reach its operating speed within 10 seconds after the polygon motor on signal, or the lock signal is not detected for more than 40 ms continuously during operation.
Causes: • Polygon motor defective • Poor connection of the interface harness which connects the polygon motor driver and the IOCSS board • IOCSS board defective
Code: SC321
Description: No laser start signal (F-GATE error)
The CPU does not detect the laser start signal (F-GATE) after the copy paper reaches the registration sensor.
Description: Laser synchronization error
The laser synchronization signal cannot be detected by the main scan synchroniziation detector board for more than 5 consecutive 100 intervals.
Causes: • Poor connection of the interface harness which connects the laser synchronization detector board and the BiCU board • Laser synchronization detector board out of position • Laser synchronization detector board defective • BiCU board defective
Code: SC324
Description: LD drive current over
The LD drive board applies more than 100 mA to the LD.
Causes: • LD unit defective (not enough power, due to aging) • Poor connection of the interface harness which connects the LD unit and the BiCU board • Temperature around the LD unit is too high
Code: SC390
Description: TD sensor error 1
The TD sensor outputs less than 0.5V, 20 s after the TD sensor initial setting has been performed.
Causes: • TD sensor abnormal • Poor connection of the PCU