Description: Charge wire cleaner error
The charge wire cleaner is detected over the image processing area.
Causes: • Charge wire cleaner drive motor defective • Insufficient lubrication for the charge wire cleaner drive mechanism (G501 grease)
Code: SC305
Description: Time out error (memory)
The BCU cannot receive the memory access ready signal from the EX-IPU
Causes:
Code: SC320
Description: Polygon motor error
The polygon motor does not reach its operating speed within 20 seconds after sending the polygon motor ON signal, or the motor speed does not decrease within 20 seconds after sending the polygon motor OFF signal.
Causes: • 24V line abnormal (blown fuse condition) • Polygon motor defective • Polygon motor driver defective • Poor connection of the interface harness which connects the polygon motor driver and the EX-IPU board • EX-IPU board defective • FU103 on the DC power supply board is blown
Code: SC321
Description: No laser start signal (F-GATE error)
The laser start signal (F-GATE) is not sent within 20 seconds after the copy paper reaches the registration sensor.
Causes: • BCU board defective • EX-IPU board defective • Poor connection of the interface harness which connects the BCU board and the EX-IPU board
Code: SC322
Description: Laser synchronization error 1
The laser synchronization signal can not be detected by the main scan synchroniziation detector board -1 just after the LD is turned on while the polygon mirror is rotating at operating speed.
Causes: • Poor connection of the interface harness which connects the laser synchronization detector board -1 and the EX-IPU board • Laser synchronization detector board -1 out of position • Laser synchronization detector board -1 defective • EX-IPU board defective • LD unit defective
Code: SC323
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 EX-IPU board • Temperature around the LD unit is too high