• Code: 557
• Description: Zero cross frequency error
  When the zero cross signal is 66 or more and it is detected 10 times or more in 11 detections, the machine determines that input 60 Hz and SC557 occurs.
• Causes: • Noise (High frequency)
• Remedy: Check the power supply source.

• Code: 559
• Description: Consecutive fusing jam
  The paper jam counter for the fusing unit reaches 3 times. The paper jam counter is cleared if the paper is fed correctly. This SC is activated only when SP1159-001 is set to "1" (default "0").
• Causes: • Paper jam in the fusing unit.
• Remedy: Remove the paper that is jammed in the fusing unit. Then make sure that the fusing unit is clean and has no obstacles in the paper feed path.

• Code: 561
• Description: Heating roller thermopile error
  The temperature measured by the thermopile does not reach 0 °C for 20 seconds.
• Causes: • Loose connection of the thermopile • Defective thermopile
• Remedy: 1. Check if the thermopile is firmly connected. 2. Replace the thermopile.

• Code: 563
• Description: Heating roller overheat 3 (software error)
  The detected fusing roller temperature stays at 230°C or more for 1 second.
• Causes: • Defective PSU • Defective IOB • Defective BICU
• Remedy: 1. Replace the thermistor. 2. Replace the PSU. 3. Replace the IOB. 4. Replace the BICU.

• Code: 564
• Description: Heating roller overheat 3 (hardware error)
  The thermopile detects 250°C or more.
• Causes: • Defective PSU • Defective IOB • Defective BICU • Defective fusing control system
• Remedy: 1. Replace the thermistor. 2. Replace the PSU. 3. Replace the IOB. 4. Replace the BICU.

• Code: 565
• Description: Heating lamp consecutive full power 3
  When the fusing unit is not running in the ready condition, the pressure roller-fusing lamp keeps ON full power for 120 seconds or more.
• Causes: • Broken heating roller fusing lamp
• Remedy: 1. Replace the heating roller lamp. 2. Replace the PSU.

• 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: 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: Check or replace the mechanical counter.