• Code: 797-4
• Description: Trimmings Buffer HP Sensor: Right (S100) Error PB (D391) Trimmings buffer did not reach the trimmings dump port because: The trimmings buffer sensor: right (S100) did not go OFF within the prescribed time because it failed to leave the HP sensor. -or- The trimmings buffer sensor: right (S103) did not go ON within the prescribed time because it failed to arrive at the HP sensor.
• Causes: • Trimmed scraps in or around the trimmings buffer • Trimmings buffer motor (M37) defective • Right trimmings buffer sensor (S100) defective • Sensor or motor harness loose, broken, defective
• Remedy:

• Code: 797-40
• Description: Cutter Entrance Sensor Error PB (D391) The cutter entrance sensor (S65) went ON at power on after the finisher initialized. -or- The signature exit senor remained ON after the power on jam recovery.
• Causes: • Detected a signature jam at power on.
• Remedy:

• Code: 797-41
• Description: Signature Registration Sensor Lag Error PB (D391) The signature registration sensor went ON at warm-up after power on. -or- When the signature exited and the lift tray lowered, the sensor went ON.
• Causes: • Detected a jammed book at power on. • Motor or sensor harness loose, broken, defective
• Remedy:

• Code: 797-42
• Description: Book Arrival Sensor (S76) PB (D391) After the book output operation ended, the book arrival sensor remained ON because the book failed to move from the buffer tray to the output tray.
• Causes: • Trimmings buffer motor (M37) defective • Book arrival sensor (S76) defective • Motor or sensor harness loose, broken, defective
• Remedy:

• Code: 797-43
• Description: Trimming Jam Scrap Error PB (D391) The strips cut from the book could not be dumped into the trimmings box or the strips jammed between the trimmings buffer and edge press plate and trimming stopped. Three attempts failed to restore operation, then the jam alert was issued.
• Causes: • Strips jammed between the edge press plate and trimmings buffer. • Trimmings buffer motor (M37) defective • Trimmings buffer HP sensors: right or left (S100, S103) defective • Motor or sensor harness loose, broken, defective
• Remedy: Note: Trimming strips wider that 29 mm at the bottom and top edges (1st and 2nd cuts) and wider than 41 mm at the fore edge (3rd cut) will cause the trimming unit to jam.

• Code: 797-44
• Description: Sub Grip Signature Sensor (S39) Lag Error PB (D391) The sub grip signature sensor did not go OFF after the sub grippers released the signature to the main grip because the signature did not move.
• Causes: • Signature jammed in sub grip unit • Sub grip signature sensor defective • Sensor connector loose, broken, defective
• Remedy:

• Code: 797-45
• Description: Main Grip Signature Sensor (S55) Lag Jam PB (D391) The main grip signature sensor did not go OFF after the main grippers released the signature to the trimming unit because the book did not move.
• Causes: • Book jammed in main grip unit • Main grip signature sensor (S55) defective • Sensor connector loose, broken, defective
• Remedy:

• Code: 797-46
• Description: Signature Thickness Sensor (S50) Error PB (D391) The size of the signature measured by the signature thickness sensor was smaller than the minimum.
• Causes: • Signature thickness sensor (S50) defective • Sensor connector loose, broken, defective
• Remedy: