• Code: E535-8001
• Description: There is a swing error. (finisher)
  The home position sensor does not go off even when the swing motor has rotated for a specific period of time.
• Remedy: 1. Check the swing home position sensor. Is it normal? 2. Check the wiring between the finisher controller PCB and the swing motor. Is it normal? 3. Is there a fault in the swing mechanism? 4. Try replacing the swing motor. Is the problem corrected?

• Code: E535-8002
• Description: There is a swing error. (finisher)
  The home position sensor does not go on even when the swing motor has rotated for a specific period of time.
• Remedy: 1. Check the swing home position sensor. Is it normal? 2. Check the wiring between the finisher controller PCB and the swing motor. Is it normal? 3. Is there a fault in the swing mechanism? 4. Try replacing the swing motor. Is the problem corrected?

• Code: E537-8001
• Description: There is a rear alignment error. (finisher)
  The home position sensor does not go off even when the swing motor has rotated for a specific period of time.
• Remedy: 1. Check the aligning plate rear home position sensor. Is it normal? 2. Check the wiring between the finisher controller PCB and the aligning plate rear motor. Is it normal? 3. Is there a mechanical obstacle in the path of the aligning plate? 4. Try replacing the aligning plate rear motor. Is the problem corrected?

• Code: E537-8002
• Description: There is a rear alignment error. (finisher)
  The home position sensor does not go on even when the swing motor has rotated for a specific period of time.
• Remedy: 1. Check the aligning plate rear home position sensor. Is it normal? 2. Check the wiring between the finisher controller PCB and the aligning plate rear motor. Is it normal? 3. Is there a mechanical obstacle in the path of the aligning plate? 4. Try replacing the aligning plate rear motor. Is the problem corrected?

• Code: E540-8001
• Description: There is an upper tray ascent/decent error. (finisher)
  - If the tray does not return to home position when the tray 1 shift motor is driven for 20 seconds. - If the tray does not move to other area when tray 1 shift motor is driven for 4 seconds.
• Remedy: 1. Check the No. 1 tray area sensors 1 through 3. Are they normal? 2. Check the wiring between the finisher controller PCB and the No. 1 tray shift motor. Is it normal? 3. Is there a fault in the tray ascent/descent mechanism? 4. Try replacing the No. 1 tray 1 paper surface sensor tray shift motor. Is the problem corrected?

• Code: E540-8002
• Description: There is an upper tray ascent/decent error. (finisher)
  - The dangerous area is reached before the tray 1 paper surface sensor detects paper surface during the paper surface detection operation. - A discontinuous area is detected during tray operation
• Remedy: 1. Check the No. 1 tray area sensors 1 through 3. Are they normal? 2. Check the wiring between the finisher controller PCB and the No. 1 tray shift motor. Is it normal? 3. Is there a fault in the tray ascent/descent mechanism? 4. Try replacing the No. 1 tray 1 paper surface sensor tray shift motor. Is the problem corrected?

• Code: E540-8003
• Description: There is an upper tray ascent/decent error. (finisher)
  The tray 1 closing detect switch is activated while the tray 1 is operating.
• Remedy: 1. Check the No. 1 tray area sensors 1 through 3. Are they normal? 2. Check the wiring between the finisher controller PCB and the No. 1 tray shift motor. Is it normal? 3. Is there a fault in the tray ascent/descent mechanism? 4. Try replacing the No. 1 tray 1 paper surface sensor tray shift motor. Is the problem corrected?

• Code: E540-8004
• Description: There is an upper tray ascent/decent error. (finisher)
  Clock signal input cannot be detected when the tray 1 shift motor has been driven for 0.2 second.
• Remedy: 1. Check the No. 1 tray area sensors 1 through 3. Are they normal? 2. Check the wiring between the finisher controller PCB and the No. 1 tray shift motor. Is it normal? 3. Is there a fault in the tray ascent/descent mechanism? 4. Try replacing the No. 1 tray 1 paper surface sensor tray shift motor. Is the problem corrected?