• Code: 581
• Description: IH inverter input voltage error
  The IH inverter detects 70 V or less/150 V or more for 10 seconds. The IH inverter detects 160 V or less/300 V or more for 10 seconds.
• Causes: • Unusual input voltage • Defective IH inverter
• Remedy: 1. Check if the power supply voltage of the customer site is within the proper power voltage range. 1. Check CN981 on the IH inverter. 2. Replace the IH inverter.

• Code: 582
• Description: IH inverter current error at power on
  The output current from the IH inverter does not reach the proper value when the IH inverter turns on.
• Causes: • Disconnected power input terminal 1 and 2 • Defective IH inverter • Defective IH coil unit • Defective fusing unit
• Remedy: 1. Check the power input terminals 1 and 2. 2. Replace the IH inverter. 3. Replace the IH coil unit. 4. Replace the fusing unit.

• Code: 585
• Description: IH coil unit full power (1250W) error
  The IH coil unit full power (1250W) continues for 200 seconds or more.
• Causes: • Defective IH inverter • Defective BICU • Defective IOB • Broken connection between IH inverter and IOB • Defective thermopile
• Remedy: 1. Replace the IH inverter. 2. Replace the BICU. 3. Replace the IOB. 4. Check the connection between IH inverter and IOB. 5. Replace the thermopile.

• Code: 610
• Description: Mechanical counter error: K
  This SC is only for NA models. The machine detects the mechanical counter error when SP5987-001 is set to "1".
• Causes: • Disconnected mechanical counter • Defective mechanical counter
• Remedy: 1. Check or replace the mechanical counter.

• Code: 611
• Description: Mechanical counter error: FC
  This SC is only for NA models. The machine detects the mechanical counter error when SP5987-001 is set to "1".
• Causes: • Disconnected mechanical counter • Defective mechanical counter
• Remedy: 1. Check or replace the mechanical counter.

• Code: 620
• Description: ARDF communication error
  After the ARDF is detected, the break signal occurs or communication timeout occurs.
• Causes: • Incorrect installation of ARDF • ARDF defective • BICU board defective • External noise
• Remedy: 1. Check the cable connection of the ARDF. 2. Shut out the external noise. 3. Replace the ARDF. 4. Replace the BICU board.

• Code: 621
• Description: Finisher communication error
  While the IOB communicates with an optional unit, an SC code is displayed if one of following conditions occurs. • The IOB receives the break signal which is generated by the peripherals only just after the main switch is turned on. • When the IOB does not receive an OK signal from a peripheral 100ms after sending a command to it. The IOB resends the command. The IOB does not receive an OK signal after sending the command 3 times.
• Causes: • Cable problems • IOB problems • BICU problems • PSU problems in the machine • Main board problems in the peripherals
• Remedy: 1. Check if the cables of peripherals are correctly connected. 2. Replace the IOB or main board of peripherals. 3. Replace the BICU if no power is supplied to peripherals.

• Code: 622
• Description: Paper tray unit communication error
  While the IOB communicates with an optional unit, an SC code is displayed if one of following conditions occurs. • The IOB receives the break signal which is generated by the peripherals only just after the main switch is turned on. • When the IOB does not receive an OK signal from a peripheral 100ms after sending a command to it. The IOB resends the command. The IOB does not receive an OK signal after sending the command 3 times.
• Causes: • Cable problems • IOB problems • BICU problems • PSU problems in the machine • Main board problems in the peripherals
• Remedy: 1. Check if the cables of peripherals are correctly connected. 2. Replace the IOB or main board of peripherals. 3. Replace the BICU if no power is supplied to peripherals.