• Code: 231-03
• Description: FGATE OFF error: Ma
  The PFGATE ON signal still asserts within 5 seconds after processing finish timing for black (-01), cyan (-02), magenta (-03) or yellow (-04) color writing. The PFGATE ON signal still asserts when the next job starts.
• Causes: Defective ASIC (Lupus). Poor connection between controller and BICU. Defective BICU
• Remedy: 1. Check the connection between the controller board and the BICU. 2. Replace the BICU. 3. Replace the controller board.

• Code: 231-04
• Description: FGATE OFF error: Ye
  The PFGATE ON signal still asserts within 5 seconds after processing finish timing for black (-01), cyan (-02), magenta (-03) or yellow (-04) color writing. The PFGATE ON signal still asserts when the next job starts.
• Causes: Defective ASIC (Lupus). Poor connection between controller and BICU. Defective BICU
• Remedy: 1. Check the connection between the controller board and the BICU. 2. Replace the BICU. 3. Replace the controller board.

• Code: 240-01
• Description: LD error: Bk or Cy
  The BICU detects an LD error a few times consecutively when the LDB unit turns on after LDB initialization.
• Causes: Worn-out LD. Disconnected or broken harness of the LD
• Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.

• Code: 240-03
• Description: LD error: Ma or Ye
  The BICU detects an LD error a few times consecutively when the LDB unit turns on after LDB initialization.
• Causes: Worn-out LD. Disconnected or broken harness of the LD
• Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.

• Code: 260-01
• Description: Writing temperature thermistor error: Bk - Cy
  The temperature thermistor output is no more than 0.81 V or no less than 2.95 V.
• Causes: No thermistor is installed or disconnected connectors. Defective thermistor
• Remedy: 1. Check the connection of the connectors. 2. Replace the thermistor.

• Code: 260-03
• Description: Writing temperature thermistor error: Ma - Ye
  The temperature thermistor output is no more than 0.81 V or no less than 2.95 V.
• Causes: No thermistor is installed or disconnected connectors. Defective thermistor
• Remedy: 1. Check the connection of the connectors. 2. Replace the thermistor.

• Code: 285
• Description: MUSIC error
  Line position adjustment fails four consecutive times.
• Causes: Pattern sampling error (insufficient image density). Defective TM sensors. Defective image transfer belt unit. Defective PCDU(s). Defective laser optics housing unit.
• Remedy: 1. Check and reinstall the image transfer belt unit and PCDUs. 2. Check if each toner bottle has enough toner. 3. Replace the TM sensor. 4. Replace the image transfer belt unit. 5. Replace the PCDU(s). 6. Replace the laser optics housing unit.

• Code: 312
• Description: Charge P.P. output error: Bk
  The feedback voltage of the charge AC for each color is 0.3 V or less for 0.2 seconds after the charge AC has turned on.
• Causes: Disconnected or broken harnesses of the HVPS. Defective PCDU. Defective HVPS.
• Remedy: 1. Check or replace the harnesses of the HVPS. 2. Reinstall or replace the PCDU. 3. Replace the HVPS.