• Code: SC557
• Description: Pressure roller temperature does not increase Type: 1 - Description - The main control board notifies the SCU when the output of the pressure roller thermistor increases by no more than 3°C for a minute during warming up after the power switch is turned on. - Detection Timing - When the power switch is turned on
• Causes: • Pressure roller thermistor • Main control board SP-Log: 7-402-5

• Code: SC558
• Description: Zero cross signal abnormal Type: 1 - Description - The main control board notifies the SCU when the number of zero cross signals generated within a certain period of time does not reach a predetermined number. - Detection Timing - At all times
• Causes: • Main control board SP-Log: 7-402-5

• Code: SC600
• Description: Communication error between the SCU and operation panel boards Type: 3 - Description - The input value used by the SCU to send the test signal to the operation panel does not match the expected value. - Detection Timing - When the power switch is turned on When the operation panel is used
• Causes: • SCU (System Control Unit) SP-Log: 7-402-6

• Code: SC601
• Description: Communication error between SCU and scanner IPU boards Type: 3 - Description - The SCU detects a communication error in the scanner module during communication with the scanner IPU board based on the SCSI connection protocol. - Detection Timing - At all times
• Causes: • Scanner IPU • SCU (System Control Unit) • SCSI cable SP-Log: 7-402-6

• Code: SC603
• Description: Communication error between SCU and printer main control board Type: 3 - Description - The SCU detects a communication error in the printer module during communication with the main control board based on the SCSI connection protocol. - Detection Timing - Always
• Causes: • Main control board • SCU (System Control Unit) • SCSI cable SP-Log: 7-402-6

• Code: SC604
• Description: Communication error between scanner and IDU Type: 2 - Description - The scanner IPU board detects a communication error in the IDU during communication with the IDU based on the IDU connection protocol. - Detection Timing - When the power switch is turned on When the IDU is active
• Causes: • Scanner IPU • IDU SP-Log: 7-402-6

• Code: SC605
• Description: Printer internal communication error Type: 2 - Description - (1) When the Fgate signal (LD on/off control) is not sent. (2) When the sequence reaches an impossible value. (3) When the Fgate OFF command is received for a process that has not started - Detection Timing - Always
• Causes: • Main control board SP-Log: 7-402-6

• Code: SC606
• Description: Printer SCSI communication error Type: 2 - Description - The main control board detects an error or hardware-related noise during communication between the SCU or SCN and the main control board. - Detection Timing - Always
• Causes: • Main control board • SCU (System Control Unit) • Scanner IPU • SCSI cable SP-Log: 7-402-6