• Code: E503-0042
• Description: Error in communication between the finisher - integration unit (Finisher-A1). Communication failed between finisher - integration unit
• Remedy: 1. The connector on the cable between the finisher and the integration unit is disconnected. 2. The cable between the finisher and the integration unit is faulty. 3. The integration controller PCB is faulty. 4. The finisher controller PCB is faulty.

• Code: E503-0042
• Description: Error in communication between the finisher - integration unit (Finisher-A1). Communication failed between finisher - integration unit
• Remedy: 1. The connector on the cable between the finisher and the integration unit is disconnected. 2. The cable between the finisher and the integration unit is faulty. 3. The integration controller PCB is faulty. 4. The finisher controller PCB is faulty

• Code: E503-0051
• Description: Error in communication between the integration unit - professional puncher(Finisher-A1). Communication failed between the integration unit - professional puncher
• Remedy: 1. The connector on the cable between the integration unit and the professional puncher is disconnected. 2. The cable between the integration unit and the professional puncher is faulty. 3. The integration controller PCB is faulty. 4. The professional puncher controller PCB is faulty.

• Code: E503-0053
• Description: Error in communication between the integration unit - professional puncher.
• Remedy: 1. The connector on the cable between the integration unit and the professional puncher is disconnected. 2. The cable between the integration unit and the professional puncher is faulty. 3. The integration controller PCB is faulty. 4. The professional puncher controller PCB is faulty.

• Code: E503-0061
• Description: Error in communication between the finisher - paper folding unit(Finisher-A1). Communication failed between the finisher - paper folding unit
• Remedy: 1. The connector on the cable between the finisher and the paper folding unit is disconnected. 2. The cable between the finisher and the paper folding unit is faulty. 3. The finisher controller PCB is faulty. 4. The paper folding unit controller PCB is faulty.

• Code: E503-0062
• Description: Error in communication between the finisher - paper folding unit(Finisher-A1). Communication failed between the finisher - paper folding unit
• Remedy: 1. The connector on the cable between the finisher and the paper folding unit is disconnected. 2. The cable between the finisher and the paper folding unit is faulty. 3. The finisher controller PCB is faulty. 4. The paper folding unit controller PCB is faulty

• Code: E503-0081
• Description: Error in communication between the saddle stitcher - trimmer(Finisher-A1). Communication failed between the finisher - trimmer
• Remedy: 1. The connector on the wiring between the saddle stitcher and the trimmer is disconnected. 2. The wiring between the saddle stitcher and the trimmer is faulty. 3. The trimmer controller PCB is faulty. 4. The saddle stitcher controller PCB is faulty. 5. The finisher controller PCB is faulty.

• Code: E503-0082
• Description: Error in communication between the saddle stitcher - trimmer(Finisher-A1). Communication failed between the finisher - trimmer
• Remedy: 1. The connector on the wiring between the saddle stitcher and the trimmer is disconnected. 2. The wiring between the saddle stitcher and the trimmer is faulty. 3. The trimmer controller PCB is faulty. 4. The saddle stitcher controller PCB is faulty. 5. The finisher controller PCB is faulty