• Code: SC547
• Description: Zero cross signal malfunction
  Zero cross signals are not detected within a certain period.
• Causes: • Power supply board defective • IOB defective • BICU defectivechanism

• Code: SC590
• Description: Exhaust fan motor error
  The CPU detects an exhaust fan lock signal for more than 3.5 seconds.
• Causes: • Poor connection of the exhaust fan motor • Too much load on the motor drive

• Code: SC610
• Description: Communication error between IOB and duplex unit
  The IOB cannot communicate with the duplex unit properly.
• Causes: • Poor connection between the IOB and duplex unit • IOB defective • Duplex control board defective

• Code: SC620
• Description: Communication error between IOB and ADF
  The IOB cannot receive a response from the ADF main board for 4 seconds or more.
• Causes: • Poor connection between the IOB and ADF main board (DF connector) • ADF main board defective • IOB defective

• Code: SC691
• Description: Communication error between BICU and fax controller
  The BICU board cannot communicate with the fax controller properly.
• Causes: • Poor connection between the BICU board and the fax controller • BICU board defective • Fax controller defective

• Code: SC692
• Description: Communication error between BiCU and printer controller
  The BICU board cannot communicate with the printer controller properly.
• Causes: • Poor connection between the BICU board and the mother board. • Poor connection between the mother board and the printer controller • BICU board defective • Printer controller defective • Mother board defective

• Code: SC694
• Description: Communication error between BICU and scanner controller
  The BICU board cannot communicate with the scanner controller properly.
• Causes: • Poor connection between the BICU board and the mother board. • Poor connection between the mother board and the scanner controller • BICU board defective • Scanner controller defective • Mother board defective

• Code: SC696
• Description: Communication error between IOB and finisher
  The IOB cannot communicate with the finisher properly.
• Causes: • Poor connection between the IOB and finisher • IOB defective • Finisher main board defective