• Code: E537-8001
• Description: Front alignment error (Finisher-S1)
  The home position sensor does not go on within 2.0 sec when the front aligning plate is moved to home position.
• Remedy: Replace the finisher controller PCB. Replace the front alignment motor. Check the front aligning plate drive mechanism. Check the front alignment home position sensor.

• Code: E537-8002
• Description: Front alignment error (Finisher-S1)
  The home position sensor dos not go off within 1.0 sec when the front aligning plate is shifted from home position.
• Remedy: Replace the finisher controller PCB. Replace the front alignment motor. Check the front aligning plate drive mechanism. Check the front alignment home position sensor.

• Code: E540-0002
• Description: Upper tray ascent/descent motor error (External finisher)
  Upper tray ascent/descent motor clock error
• Remedy: Replace the No. 1 tray shift motor. Replace the finisher controller PCB. Check the tray ascent/descent mechanism.

• Code: E540-0003
• Description: Area error
• Remedy: Replace the No. 1 tray area sensor PCB. Replace the finisher controller PCB.

• Code: E540-0004
• Description: Safety switch activation
• Remedy: Check the No. 1 tray closed detecting switch. Replace the finisher controller PCB.

• Code: E540-8002
• Description: Stack tray motor error (FinisherS1)
  The operation to detect the paper surface of the stack tray does not end within 1.0 sec.
• Remedy: Replace the finisher controller PCB. Replace the tray ascent/descent motor. Check the stack tray drive mechanism. Check the paper surface sensor.

• Code: E540-8003
• Description: Stack tray motor error (FinisherS1)
  An abnormal combination of sensor states has been detected.
• Remedy: Replace the finisher controller PCB. Check the stack tray upper limit sensor. Check the stack tray lower limit sensor. Check the stack tray upper paper surface sensor. Check the stack tray lower paper surface sensor.

• Code: E542-0002
• Description: Lower tray ascent/descent motor error (External finisher)
  Lower tray ascent/descent motor clock error
• Remedy: Replace the No. 2 tray shift motor. Replace the finisher controller PCB. Check the tray ascent/descent mechanism