• Code: SC545
• Description: Fusing overheat error 2
  The fusing lamp stays on at full power for 30 seconds while in the stand-by condition after warming-up is completed.
• Causes: • Fusing thermistor out of position

• Code: SC546
• Description: Fusing ready temperature malfunction
  The fusing temperature goes 20 °C below or 20 °C over the stand-by temperature after warm-up is completed.
• Causes: • Poor thermistor connector connection • Poor fusing unit connection

• Code: SC547
• Description: Zero cross signal malfunction
  Zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on.
• Causes: • Power supply board defective • Noise on the ac power line

• Code: SC548
• Description: Fusing unit installation error
  The machine cannot detect the fusing unit when the front cover and right cover are closed.
• Causes: • Fusing unit is not installed • Poor fusing unit connection

• Code: SC599
• Description: 1-bin tray motor lock (optional 1-bin tray unit)
  A 1-bin tray motor lock signal is not detected for more than 0.3 seconds during rotation.
• Causes: • 1-bin tray motor defective • Too much load on the drive mechanism • Poor motor connector connection

• Code: SC601
• Description: Communication error between BICU and scanner unit
  The BICU cannot communicate with the BIS board properly.
• Causes: • Poor connection between the SIB and SIFB boards. • Poor connection between the SIFB and BICU boards. • SIB board defective • SIFB board defective • BICU board defective

• Code: SC602
• Description: Communication error between BICU and HDD control board
  The BICU cannot communicate with the HDD control board properly.
• Causes: • Poor connection between the BICU board and HDD control board • HDD control board defective • BICU board defective

• Code: SC620-1
• Description: Communication error between BICU and ADF 1
  The BICU cannot receive a response signal three times when a communication error has occurred.
• Causes: • Poor connection between the BICU board and ADF main board • ADF main board defective • BICU board defective