• Code: 321
• Description: F-Gate error: No laser writing signal
  • The laser writing signal (F-GATE) does not go to LOW for more than 30 seconds after the copy paper reaches the registration sensor.
• Causes: • BICU board defective • PCI harness between the controller board and the BICU defective or disconnected

• Code: 322
• Description: 1st laser synchronization error
  • The 1st laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated.
• Causes: • Poor cable connection between the laser synchronization detector board and the LD unit. • Laser synchronization detector board out of position and angle of reflection not correct • Laser synchronization detector board defective • LD unit defective

• Code: 323
• Description: LD drive current too high
  • 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 defective

• Code: 326
• Description: 2nd laser synchronization error
  The 2nd laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated.
• Causes: • Poor connection between the laser synchronization detector board and the LD unit. • Laser synchronization detector board out of position • Laser synchronization detector board defective • LD unit defective

• Code: 327
• Description: LD unit home position error 1
  The LD unit home position sensor does not detect an on condition when the LD unit moves to its home position.
• Causes: • HP sensor/harness defective • LD unit home position sensor defective • LD positioning motor harness defective • LD unit movement blocked because of incorrect connector routing

• Code: 328
• Description: LD unit home position error 2
  The LD unit home position sensor does not detect an off condition when the LD unit moves from its home position.
• Causes: • HP sensor/harness defective • LD positioning/harness motor defective • LD unit movement blocked because of incorrect connector routing

• Code: 329
• Description: LD unit beam pitch adjusted incorrectly
  The LD unit HP sensor does not detect the ON condition while changing the LD unit position for correcting the LD position or changing the dpi.
• Causes: • After initialization of the SP modes, SP2-109-3 or SP2-109-4 was not executed. • The harness is blocking the LD drive (PCB), preventing adjustment of the pitch.

• Code: 335
• Description: Polygonal Mirror Motor Error 1: ON Timeout
  The XSCRDY signal is not issued (LOW: Active) within 25 s after the polygonal mirror motor switches on.
• Causes: • I/F harness of the polygonal mirror motor disconnected or defective. • Polygonal mirror motor or polygonal mirror motor driver defective. • Polygonal mirror motor drive pulse is not output incorrectly. • GABIC cannot monitor XSCRDY signal.