Description: IPU White Level Detection Error
The level of the white standard pattern detected by the IPU chip (on the BICU board) is too low.
Causes: • Exposure lamp defective • BICU board defective • Incorrect position of the white standard pattern • Dirty white plate • SBU board defective
Code: SC302
Description: Charge roller current leak
A charge roller current leak signal is detected.
Causes: • Charge roller damaged • Charge high voltage supply board defective • Poor connection of the PCU
Code: SC320
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 200 ms continuously during operation.
Causes: • Polygon mirror motor defective • Poor connection between the polygon mirror motor driver and the BICU board • BICU board defective
Code: SC321
Description: No laser start signal (F-GATE error)
The laser writing signal (F-GATE) is still not LOW when the laser writing area +5 mm has passed since the laser writing start position on the drum.
Causes: • BICU board defective • EMB (Copier feature expander) board defective • The fax controller or printer controller has a poor connection. • Fax controller or printer controller defective
Code: SC322
Description: Laser synchronization error
The main scan synchronization detector board cannot detect the laser synchronization signal for more than 5 consecutive 100 ms intervals.
Causes: • Poor connection between the laser synchronization detector board and the BICU board • Laser synchronization detector board out of position • Laser synchronization detector board defective • BICU board defective • LD unit 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 between the LD unit and the BICU board • BICU board defective