• Code: SC322
• 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 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: SC323
• Description: LD drive current over
  The LD drive board applies more than 110 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: SC326
• 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: SC327
• 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: • LD unit home position sensor defective • LD positioning motor defective • LD unit movement blocked because of incorrect connector routing

• Code: SC328
• 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: • LD unit home position sensor defective • LD positioning motor defective • LD unit movement blocked because of incorrect connector routing

• Code: SC329
• Description: Laser beam pitch adjustment error
  The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the dpi.
• Causes: • The laser beam pitch adjustment (SP2-109-3 and 4) was not done after replacing the NVRAM or doing an NVRAM clear. • The laser beam pitch adjustment (SP2-109-1 ~ 4) was not done after replacing the LD unit. • LD unit movement blocked because of incorrect connector routing

• Code: SC350-1
• Description: ID sensor error 1
  One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsp >= 2.5V 2) Vsg <= 2.5V 3) Vsp = 0V 4) Vsg = 0V
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • High voltage supply board defective • Dirty ID sensor • Defect at ID sensor pattern writing area of the drum

• Code: SC350-2
• Description: ID sensor error 2
  The ID sensor output voltage is 5.0V and the PWM signal input to the ID sensor is 0 when checking the ID sensor pattern.
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • High voltage supply board defective • Dirty ID sensor • Defect at the ID sensor pattern writing area of the drum