Description: Thermistor or heater abnormality at power-ON: Abnormality of service call the thermistor is detected when power is turned ON or the temperature of the fuser roller does not rise in a specified period of time after power is turned ON.
Remedy: 1. Check the thermistors (1) Check if the connectors are disconnected. (2) Check if the main and edge thermistors are in contact with the surface of the fuser roller properly? (3) Check if the harnesses of the main and edge thermistors are open-circuited. 2. Check the IH board and IH coil (1) Check if the IH coil is broken. (2) Check if the connector of the IH coil is disconnected. (3) Check if the thermostat is blown. (4) Check if the connectors on the IH board are disconnected (AC input connector and LGC I/F connector CN455/456). (5) Check if the IH board or the switching power supply unit are abnormal. • Replace the IH board. 3. Check the LGC board (1) Check if the connectors CN316 are disconnected. (2) Check if the conductor pattern on the LGC board is short- or open-circuited. (3) Replace the LGC board. 4. Clear the status counter After repairing the matter which caused the error [C410], perform the following: (1) Turn ON the power while [0] and [8] are pressed simultaneously. (2) Key in “400” with the digital keys, then press [START]. (3) Change the current status counter value “1” or “2” to “0”, then press [ENTER] or [INTERRUPT] (to cancel [C410]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.
Code: C440
Description: Heater abnormality after abnormality judgment: The temperature of the fuser roller has exceeded the range of control (in this case, the main switch turns OFF automatically) or does not even reach the range.
Remedy: 1,2.3. Check the thermistors, IH board, IH coil and LGC board Check the above components following the procedures 1, 2 and 3 for [C410]. 4. Clear the status counter Change the current status counter value (08-400) “5”, “7” or “9” to “0” for [C440], taking the same procedure as that for [C410]. * The status counter value is as follows in the following cases. Change them to "0" respectively. • The error occurred during warming-up: "5" • The error occurred after the equipment has become ready: "7" • The temperature detected by the main thermistor is 230°C or higher: "9" • The temperature detected by the edge thermistor is 280°C or higher: "9"
Code: C450
Description: Thermistor abnormality during printing: Abnormality of the thermistor is detected during printing.
Remedy: 1. Check the edge thermistor (1) Check if the connector is disconnected. (2) Check if the edge thermistor is in contact with the surface of the fuser roller properly. (3) Check if the harness of the edge thermistor is open-circuited. 2. Check the LGC board (1) Check if the connector CN302 is disconnected. (2) Check if the conductor pattern on the board is short- or open-circuited. (3) Replace the LGC board. 3. Clear the status counter Change the current status counter value (08-400) “6” to “0”.
Code: C470
Description: IH initialization or IH power voltage abnormality: The AC input is not applied to the IH control circuit normally, or the input voltage is too high/low.
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 equipment is warming up)) 2. Check the thermostat Check if the thermostat is blown. 3. Check the IH board (1) Check if the AC input connector on the IH board or the LGC I/F connector CN455/456 is disconnected? (2) Check if the fuse on the IH board has blown. (3) Replace the IH board. 4. Check the LGC board (1) Check if the connector CN316 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”, “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 equipment has become ready: "14" • The error occurred when the equipment is in the ready state or during printing: "17"
Code: C480
Description: Overheating of IGBT: The temperature of the IGBT rises abnormally.
Remedy: 1. Check the operation of the IH board cooling fan Check if the IH board cooling fan is rotating normally. (Is the connector securely connected?) 2. Check the IH 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 board. 3. Clear the status counter Change the values “12”, “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 equipment has become ready: "15" • The error occurred when the equipment is in the ready state or during printing: "18"
Code: C490
Description: IH control circuit or IH coil abnormality: Abnormality is detected in IH control circuit or IH coil is broken/shorted.
Remedy: 1. Check the IH board (1) Check if the conductor pattern on the board is short or open-circuited. (2) Replace the IH 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”, “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 equipment has become ready: "16" • The error occurred when the equipment is in the ready state or during printing: "19"