• Code: C-2403
• Description: Toner bottle phase detection abnormality.
  - While in the power switch (SW2) ON, the toner bottle position sensor (PS28) does not turn ON within a specified period of time after the toner bottle motor (M10) turns ON.
• Causes: Toner bottle motor (M10) Toner bottle position sensor (PS28) Printer control board (PRCB)

• Code: C-2701
• Description: Charging abnormality.
  - An error signal is detected 5 times in succession at prescribed intervals.
• Causes: Charging corona High voltage unit (HV) Printer control board (PRCB)(FS

• Code: C-2702
• Description: Transfer lightning abnormality.
  - There occurs a phenomenon 5 times in a job, in which an error signal is detected 3 times in succession at prescribed intervals.
• Causes: Transfer/separation charger High voltage unit (HV) Printer control board (PRCB)

• Code: C-2703
• Description: Separation lightning abnormality.
  - There occurs a phenomenon 5 times in a job, in which an error signal is detected 5 times in succession at prescribed intervals.
• Causes: Transfer/separation charger High voltage unit (HV) Printer control board (PRCB)

• Code: C-2801
• Description: TCR output abnormality.
  - When the TCR output is in excess of 3.0 V.
• Causes: TCR sensor (TCRS) Printer control board (PRCB)

• Code: C-2802
• Description: TCR output abnormality.
  - When the TCR sensor (TCRS) maximum output is 1.0 V or less.
• Causes: TCR sensor (TCRS) Printer control board (PRCB)

• Code: C-2803
• Description: TCR output abnormality.
  - When the output ripple voltage of the TCR sensor (TCRS) is less than 0.5 V.
• Causes: TCR sensor (TCRS) Printer control board (PRCB)

• Code: C-2804
• Description: Toner density abnormality.
  - When the L detection output is in excess of 2.6 V before the toner remaining sensor (PZS) detects a no toner condition, toner density does not recover even when toner is automatically supplied.
• Causes: Toner remaining sensor (PZS) TCR sensor (TCRS) Printer control board (PRCB)