• Code: C47
• Description: IH power voltage is abnormal/IH initialization error
• Remedy: 1. Check the AC input voltage Check if the AC input voltage is within the specified range. (especially when the heater becomes ON after the power is turned ON (the copier is warming up)) 2. Check the thermostat Check if the thermostat is blown. 3. Check the IH control board (1) Check if the AC input connector on the IH control board or the LGC I/F connector J522 is disconnected? (2) Check if the fuse on the IH control board has blown. (3) Replace the IH control board. 4. Check the LGC board (1) Check if the connector J317 is disconnected. (2) Check if the conductor pattern on the board is short- or open-circuited. (3) Replace the LGC board. 5. Clear the status counter Change the values “10”, “11”, “13”, “14” or “17” of the status counter (08-400) to “0”. * The status counter value is as follows in the following cases. Change them to "0" respectively. • The error occurred immediately after the power was turned ON: "10" • The error occurred before the temperature of the fuser roller reaches 40°C: "11" • The error occurred before the temperature of the fuser roller reaches 150°C: "14" • The error occurred before the machine has become ready: "13" • The error occurred when the machine is in the ready state: "17"

• Code: C48
• Description: IGBT high temperature
• Remedy: 1. Check the operation of the IH control board cooling fan Check if the IH control board cooling fan is rotating normally. (Is the connector securely connected?) 2. Check the IH control board (1) Check if the IGBT or IGBT radiation plate are normal. (Is the radiation plate securely attached?) (2) Check if the conductor pattern on the board is short- or open-circuited. (3) Replace the IH control board. 3. Clear the status counter Change the values “12”, “14”, “15” or “18” of the status counter (08-400) to “0”. * The status counter value is as follows in the following cases. Change them to "0" respectively. • The error occurred before the temperature of the fuser roller reaches 40°C: "12" • The error occurred before the temperature of the fuser roller reaches 150°C: "15" • The error occurred before the machine has become ready: "14" • The error occurred when the machine is in the ready state: "18"

• Code: C49
• Description: IH circuit or coil is abnormal
• Remedy: 1. Check the IH control board (1) Check if the conductor pattern on the board is short or open-circuited. (2) Replace the IH control board. 2. Check the IH coil (1) Check if the coil is broken or shorted. (2) Replace the IH coil. 3. Clear the status counter Change the values “13”, “15”, “16” or “19” of the status counter (08-400) to “0”. * The status counter value is as follows in the following cases. Change them to "0" respectively. • The error occurred before the temperature of the fuser roller reaches 40°C: "13" • The error occurred before the temperature of the fuser roller reaches 150°C: "16" • The error occurred before the machine has become ready: "15" • The error occurred when the machine is in the ready state: "19" [C47], [C48] and [C49] can be cleared by turning OFF and ON the main switch as long as the problem was solved, and the status counter does not have to be changed to "0". The value of the status counter remains until the next service call overwrites the value.

• Code: C55
• Description: ADF I/F is abnormal
• Remedy: 1) Check if the harness connecting the ADF control board and SLG board is disconnected or opencircuited. (2) Check the circuits and connectors on the ADF control board, mainly IC1, IC2, IC5 and CN2 for shortand open-circuits. (3) Check the circuits and connectors on the SLG board, mainly IC1, IC5 and J7 for short- or opencircuits. (4) Replace the ADF control board. (5) Replace the SLG board.

• Code: C57
• Description: Communication error between main CPU and IPC board
• Remedy: (1) Check the conductor pattern on the LGC board, mainly IC18, IC19, IC21 and J318 for short- and opencircuits. (2) Check if the conductor pattern on the IPC board is short- or open-circuited. (3) Replace the IPC board. (4) Replace the LGC board.

• Code: C58
• Description: Communication error between IPC board and finisher
• Remedy: (1) Check if the specified finisher is attached. (2) Check if the conductor pattern on the IPC board is short- or open-circuited. (3) Check if the connector pins connected to the connector J2 on the IPC board are disconnected or the harness is open-circuited. (4) Check if the conductor pattern on the finisher controller PC board is short- or open-circuited. (5) Check the connections between the finisher and the copier if the connector pins are disconnected, or the harnesses are open-circuited. (6) Replace the IPC board. (7) Replace the LGC board.

• Code: C71
• Description: ADF feed motor is abnormal
• Remedy: (1) Check if the load on the motor shaft is normal. (2) Check the mechanical load and adjust the drive system. Remove foreign objects. (3) Check if the power is supplied to connector CN11 of the motor. (4) Check the circuits and connectors on the ADF control board, mainly IC6, Q19, Q20, Q21, Q22 and CN11, for short- and open-circuits. (5) Replace the ADF control board. (6) Replace the ADF feed motor.

• Code: C73
• Description: EEPROM initialization error
• Remedy: (1) Check the ADF control board, mainly IC12, for short- and open-circuits. (2) Replace the ADF control board. (3) Initialize the EEPROM and perform the automatic sensor adjustment of the ADF.