• Code: C-1003
• Description: The communication between FS and PK fails. It shows an abnormal condition after 4 retries.
• Causes: Relay board (RB) FNS control board (FNSCB) Punch drive board (PDB)

• Code: C-1004
• Description: The communication fails when the sub-CPU on the FNS control board (FNSCB) receives data.
• Causes: FNS control board (FNSCB)

• Code: C-1005
• Description: The communication fails when the main-CPU on the FNS control board (FNSCB) receives data.
• Causes: FNS control board (FNSCB)

• Code: C-1101
• Description: The shift unit does not reach the shift position or HP after the shift roller motor (M2) starts its operation.
• Causes: FNS control board (FNSCB) Shift roller motor (M2) Shift roller home sensor (PS18)

• Code: C-1101
• Description: The shift motor (PS702) does not turn ON within a specified period of time after the shift motor (M703) starts operations.
• Causes: SF control board (SFCB) Shift motor (M703) Shift home sensor (PS702)

• Code: C-1102
• Description: The main tray upper limit sensor (PS2) or the stapler paper exit upper limit sensor (PS7) does not turn ON within a specified period of time after the main tray lift motor (M3) starts its operation.
• Causes: FNS control board (FNSCB) Main tray up down motor (M3) Main tray upper limit sensor (PS2) Stapler paper exit upper limit sensor (PS7)

• Code: C-1102
• Description: The tray upper limit sensor (PS703) or the tray lower limit sensor (PS704) does not turn ON within a specified period of time after the tray lift motor (M702) starts its operation. Or, PS703 does not turn ON within a specified period of time after it turns OFF.
• Causes: SF control board (SFCB) Tray up/down motor (M702) Tray upper limit sensor (PS703) Tray lower limit sensor (PS704)

• Code: C-1103
• Description: The alignment home sensor /Up (PS8) does not turn OFF within a specified period of time after the alignment motor /Up (M5) starts its operation. Or, PS8 does not turn ON within a specified period of time after it turns OFF.
• Causes: FNS control board (FNSCB) Relay board (RB) Alignment motor /Up (M5) Alignment home sensor /Up (PS8)