• Code: 302
• Description: Charge roller current leak
  Charge leak detected when charge was applied to the charge roller. The upper limit of PWM duty was detected (65%) for 60 ms.
• Causes: • Charge roller damaged • HVPS pack defective • PCU harness defective or disconnected

• Code: 304
• Description: Charge roller current correction error
  The charge roller bias correction was done twice but maximum charge was not detected even after the maximum charge roller bias (–2kV) was applied to the roller.
• Causes: • Charge roller defective due to excessive wear

• Code: 321
• Description: F-Gate error
  No laser signal. The laser write signal (FGATE) did not go to LOW within 60 sec. after the copy paper reached the registration sensor.
• Causes: • BICU board defective • PCI harness between the controller board and the BICU defective or disconnected

• Code: 322
• Description: Synchronization error
  The synchronization signal was not issued within 500 ms after the LD fired while the polygon motor was turning at the prescribed number of revolutions.
• Causes: • Laser synchronization board connectors or harness loose, disconnected, or damaged • Laser synchronization board defective or out of position • LD drive board defective

• Code: 323
• Description: LD drive current too high
  The LD drive board output to the LD exceeded 100 mA .
• Causes: • LD unit defective (not enough power, due to aging) • Poor connection between the LD unit and the BICU board • BICU defective

• Code: 327
• Description: LD unit home position error 1
  The LD unit home position sensor did not detect the ON condition when the LD unit moved to its home position.
• Causes: • LD unit HP sensor/harness defective • LD unit home position sensor defective • LD positioning motor connector or harness loose, broken, defective • LD unit or LD unit motor blocked • LD unit motor defective

• Code: 328
• Description: LD unit home position error 2
  The LD unit home position sensor did not detect the OFF condition when the LD unit moved from its home position.
• Causes: • LD unit HP sensor/harness defective • LD unit home position sensor defective • LD positioning motor connector or harness loose, broken, defective • LD unit or LD unit motor blocked • LD unit motor defective

• Code: 329
• Description: LD unit beam pitch adjusted incorrectly
  The LD unit HP sensor did not detect the ON condition while changing the LD unit position to correct the LD position or change the resolution (dpi).
• Causes: • After initialization of the SP modes, SP2-109-3 or SP2-109-4 did not execute. • If this SC code appears at power on or during a print job, do these two SP codes then turn the main power off/on. • If executing these two SP codes does not solve the problem, check the LD unit drive mechanism (the harness of the LD board or other object could be blocking the LD drive mechanism, preventing adjustment of the pitch). • Do SP 5801, then do SP2109 3 and SP2109 4 again.