• Code: C-6101
• Description: While in the exposure unit initial search, the scanner home sensor (PS30) does not turn on within a specified period of time. And also, while in the return scan, PS30 does not turn on within a specified period of time.
• Causes: Scanner motor (M2) Scanner home sensor (PS30) Printer control board (PRCB)

• Code: C-6201
• Description: Exposure lamp (L1) abnormality.
  - A specified period of time after L1 turns on, an L1 abnormality signal is detected in succession for a specified period of time.
• Causes: Exposure lamp (L1) L1 inverter (L1 INVVB) Printer control board (PRCB)

• Code: C-6701
• Description: AOC abnormality.
  - AOC counter overflow
• Causes: CCD board (CCDB) Exposure lamp (L1) L1 inverter (L1 INVVB) Scanner motor (M2) Overall control board (OACB)

• Code: C-6702
• Description: AGC abnormality.
  - AGC counter overflow
• Causes: CCD board (CCDB) Exposure lamp (L1) L1 inverter (L1 INVVB) Scanner motor (M2) Overall control board (OACB)

• Code: C-8001
• Description: DF control board (DFCB) communication abnormality.
  - Communication abnormality between the printer control board (PRCB) and DFCB.
• Causes: DF control board (DFCB) Printer control board (PRCB)

• Code: C-8301
• Description: Cooling fan (FM3) abnormality.
• Causes: Cooling fan (FM3) DF control board (DFCB)