• Code: C465 ... C468
• Description: [C465/C466/C467/C468] Pressure roller thermistor abnormality after entering ready status
• Causes: Power supply unit LGC board
• Remedy: Pressure roller thermistor • Connector check • Check if the pressure roller center/rear thermistor is installed properly. • Check if the harnesses of the pressure roller center and rear thermistors are open circuited. Power supply unit and fuser unit • Check if the fuser unit is installed properly. • Check if the pressure roller lamp is open circuited. (Check if the pressure roller lamp has electric continuity.) • Check if the connector of the pressure roller lamp is disconnected. • Check if the thermistor is open circuited. • Check if the connectors of the power supply (CN404, CN405, CN408, CN409) are disconnected. • Check if the power supply unit is broken. LGC board • Connector check (CN333, CN345, CN361) • Check if the conductor pattern on the board is short circuited or open circuited. Status counter Change the current status counter value (08-2002) "5", "6", "8", "18", "20", "26", "28", "33" or "34" to "0" • The status counter value is set as follows in the following cases. • The error occurred during warming-up: "5" or "6" • The error occurred after the equipment has become ready: "33" • Regardless of the equipment’s status (i.e. during warmingup, printing, paper jam or in ready status), when the temperature detected by the pressure roller thermistor is 210°C or higher: "8", "18", "20", "26" or "28". • The error occurred during printing: "34"

• Code: C4B0
• Description: IGBT overheating abnormality
• Causes: LGC board
• Remedy: LGC board • Check if the conductor pattern on the board is short circuited or open circuited. • Check if SRAM is mounted. Status counter Change the values “52“ or above, “4“, "10", "11", "12", "13", "14", "15", "16", "17", "35", "36", "37", "40", "43", "44", "45", "46" or "47" of the status counter (08-2002) to “0“.

• Code: C4B1
• Description: Fuser unit destination selection abnormality
• Causes: LGC board
• Remedy: The first occurrence of the error C4B1 is not the determination of the error. When the error C4B1 occurred, turn the power of the equipment OFF and then back ON following the instruction shown in the touch panel. If the abnormality is resolved, the value of the fuser unit status counter is automatically reset to “0“. When the error C4B1 occurred twice or more consecutively, the error is determined and recorded in the error history.
  Fuser unit • Check if the fuser unit is installed correctly or if its destination is correct. • Check if any harness in the fuser unit is caught. LGC board • Check if the destination of the SRAM is correct.

• Code: C4D0
• Description: Fuser belt thermopile abnormality
• Causes: Thermopile LGC board
• Remedy: Thermopile • Connector check • Check if the harnesses of the fuser belt center thermopile and the fuser belt side thermopile are open circuited. LGC board • Connector check (CN333) • Check if the conductor pattern on the LGC board is open circuited or short circuited. Cancel the service call After repairing the matter which caused the error [C4D0], turn the power OFF and then back ON to cancel the service call. However, the counter value will be stored until it is written over by the value of the other service call.

• Code: C550
• Description: RADF I/F error
• Causes: RADF board SLG board
• Remedy: RADF board • Check if the harness connecting the RADF board and SLG board is disconnected or open circuited. • Check if the conductor pattern on the RADF board is short circuited or open circuited. SLG board Check if the conductor pattern on the SLG board is short circuited or open circuited.

• Code: C551
• Description: RADF model detection error. Incorrect RADF installed to the equipment
• Causes: RADF
• Remedy: RADF • Replace the RADF with the correct one.

• Code: C570
• Description: Communication error between Engine-CPU and IPC board
• Causes: LGC board IPC board
• Remedy: LGC board • Check if the LGC board and IPC board are connected properly. • Check if the conductor pattern on the LGC board is short circuited or open circuited. IPC board Check if the conductor pattern on the IPC board is short circuited or open circuited.

• Code: C580
• Description: Communication error between IPC board and finisher
• Causes: IPC board Finisher controller PC board
• Remedy: Finisher Check if the specified finisher is attached. IPC board • Check if the harness connecting the IPC board and the finisher controller PC board is disconnected or open circuited. • Check if the conductor pattern on the IPC board is short circuited or open circuited. Finisher controller PC board Check if the conductor pattern on the finisher controller PC board is short circuited or open circuited.