• Code: 220
• Description: Laser synchronizing detection error: start position LD0
  The laser synchronizing detection signal for the start position of the LDB is not output for two seconds after LDB unit turns on while the polygon motor is rotating normally
• Causes: • The Copy Data Security Unit card not installed • The Copy Data Security Unit card is installed, but it is not the correct type for the machine.

• Code: 221
• Description: Laser synchronizing detection error: start position LD1
  The laser synchronizing detection signal for the start position of the LDB is not output for two seconds after LDB unit turns on while the polygon motor is rotating normally.
• Causes: • The Copy Data Security Unit card not installed • The Copy Data Security Unit card is installed, but it is not the correct type for the machine.

• Code: 230
• Description: FGATE ON error
  The FGATE signal does not assert within the prescribed time. (The BICU generates the FGATE signal and sends it to the LD unit when the registration sensor switches on.)
• Causes:

• Code: 231
• Description: FGATE OFF error
  The FGATE signal does not assert within the prescribed time. (The BICU generates the FGATE signal and sends it to the LD unit when the registration sensor switches on.)
• Causes: • BICU defective • BICU, Controller board harness loose or broken • Controller board defective.

• Code: 240
• Description: LD errorThe IPU detected a problem at the LD unit.
• Causes: • Worn-out LD • Disconnected or broken harness of the LD.

• Code: 26
• Description: Shift jogger motor 1 error
  The side fence does not retract within the prescribed time after the shift jogger motor 1 switches on. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: • Shift jogger motor 1 disconnected, defective • Shift jogger motor 1 overloaded due to obstruction • Shift jogger 1 HP sensor disconnected, defective

• Code: 302
• Description: Charge roller bias leak
  A charge roller bias leak signal was detected.
• Causes: • Charge roller damaged • High voltage supply board defective • PCDU harness defective or disconnected

• Code: 304
• Description: Charge roller bias correction leak
  The charge roller bias correction is performed twice even if the maximum charge roller bias (-2000V) is applied to the roller.
• Causes: • ID sensor defective • Worn charge roller • Charge roller damaged