• Code: SC77-34
• Description: The 3 holes/4 holes punch home sensor (PS9) does not turn OFF within a specified period of time after the 3 holes/4 holes punch home position return operation starts. Or, after the punch motor (M10) turns ON, the 3 holes/4 holes punch home sensor (PS9) does not turn OFF.
• Causes: Punch motor (M10) Punch drive board (PDB) 3 holes/4 holes punch home sensor (PS9)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-35
• Description: The alignment plate home sensor (PS10) does not turn ON within a specified period of time after the alignment plate home position return operation starts. Or, after the alignment motor (M12) turns ON, the alignment plate home sensor (PS10) does not turn OFF.
• Causes: Alignment motor (M12) Punch drive board (PDB) Alignment plate home sensor (PS10)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-36
• Description: The punch registration home sensor (PS11) does not turn ON within a specified period of time after the punch registration claw home position return operation starts. Or, after the punch registration motor (M13) turns ON, the punch registration home sensor (PS11) does not turn OFF.
• Causes: Punch registration motor (M13) Punch drive board (PDB) Punch registration home sensor (PS11)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-37
• Description: The main tray upper limit sensor (PS20) does not turn ON within a specified period of time after the main tray home position search starts. Or, after the tray up down motor (M11) turns ON, the main tray upper limit sensor (PS20) does not turn OFF.
• Causes: Tray up down motor (M11) Main tray upper limit sensor (PS20) Punch drive board (PDB)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-38
• Description: The main tray lower limit sensor (PS22) does not turn ON within a specified period of time after the tray up down motor (M11) is in the down operation.
• Causes: Tray up down motor (M11) Punch drive board (PDB) Main tray lower limit sensor (PS22)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-39
• Description: After the FD paper lift motor /Up (M8) is in the down operation, the PI lift plate home sensor /Up (PS34) does not turn ON within a specified period of time. Or, after the paper lift motor /Up (M8) is in the up operation, the PI tray upper limit sensor /Up (PS32) does not turn ON.
• Causes: Paper lift motor /Up (M8) PI drive board (PIDB) PI lift plate home sensor /Up (PS34) PI tray upper limit sensor / Up (PS32)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-40
• Description: After the FD paper lift motor /Lw (M9) is in the down operation, the PI lift plate home sensor /Lw (PS40) does not turn ON within a specified period of time. Or, after the paper lift motor /Lw (M9) is in the up operation, the PI tray upper limit sensor /Lw (PS38) does not turn ON.
• Causes: Paper lift motor /Lw (M9) PI drive board (PIDB) PI lift plate home sensor /Lw (PS40) PI tray upper limit sensor / Lw (PS38)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-41
• Description: The entrance conveyance motor (M1) detects an error detection signal for a specified period of time in succession.
• Causes: Entrance conveyance motor (M1) Punch drive board (PDB)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).