• Code: SC77-04
• Description: The main tray paper exit motor (M7) operates for more than the allowed time at a speed out of the specified one.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Main tray exit motor (M7)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-05
• Description: The paper exit opening unit does not get to the specified opening position within a specified period of time after the paper exit opening motor (M8) starts operations.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Paper exit opening motor (M8) Paper exit opening sensor (PS12)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-06
• Description: The stapler movement home sensor (PS11) does not turn ON within a specified period of time after the home position search operation of the stapler movement motor (M11) starts.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Stapler movement motor (M11) Stapler movement home sensor (PS11)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-07
• Description: The stapler rotation home sensor (PS14) does not turn ON within a specified period of time after the home position search operation of the stapler rotation motor (M4) starts.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Stapler rotation motor (M4) Stapler rotation home sensor (PS14)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-08
• Description: The stapler rotation home sensor (PS14) does not turn OFF within a specified period of time after the home position search operation of the stapler rotation motor (M4) starts.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Stapler rotation motor (M4) Stapler rotation home sensor (PS14)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-11
• Description: After the stapler motor /Fr (M31) starts operations, it does not complete operations within a specified period of time, and the stapler home sensor /Fr (PS41) does not turn ON.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Stapler board (SB) Stapler motor /Fr (M31) Stapler home sensor /Fr (PS41)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-12
• Description: After the stapler motor /Rr (M30) starts operations, it does not complete operations within a specified period of time, and the stapler home sensor /Rr (PS40) does not turn ON.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Stapler board (SB) Stapler motor /Rr (M30) Stapler home sensor /Rr (PS40)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC77-15
• Description: After the paper exit arm motor (M23) starts operations, it does not complete operations within a specified period of time, and the paper exit arm sensor (PS9) does not turn ON. Or, it operates for more than the allowed time at a speed out of the specified one.
• Causes: FNS control board (FNSCB) FNS drive board (FNSDB) Paper exit arm motor (M23) Paper exit arm home sensor (PS9)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).