Description: Carriage home position sensor not turning OFF within a specified period of time: The carriage does not shift from its home position in a specified period of time.
Remedy: Are the carriages slightly moved to the feeding direction?/Are the carriages staying at a position other than home position? YES Check if the circuits of the SLG and SDV boards are abnormal. NO 1. Check if the connector pin is disconnected or the harness is short- or open-circuited. 2. Check if the conductor pattern on the SDV board is short- or open-circuited. 3. Check if the conductor pattern on the SLG board is short- or open-circuited. 4. Replace the SDV board. 5. Replace the SLG board.
Code: C280
Description: Carriage home position sensor not turning ON within a specified period of time: The carriage does not reach to its home position in a specified period of time.
Remedy: Do the carriages make a big noise after they arrive at the home position? YES The carriage home position sensor is not turned ON. 1. Check if the connector of the sensor is disconnected. 2. Check if the circuits of the SDV and SLG boards are abnormal. NO The carriages are stopped at the home position and do not move. 1. Check if the connector pins are disconnected or the harnesses are short- or open-circuited. 2. Check if the conductor pattern on the SDV board is short- or open-circuited. 3. Check if the conductor pattern on the SLG board is short- or open-circuited. 4. Replace the SDV board. 5. Replace the SLG board.
Code: C360
Description: Charger cleaner motor abnormality: Charger cleaner motor is not rotating or wire cleaner is not moving normally.
Remedy: (1) Check if the main charger is installed normally. (2) Check if the charger wire is broken. (3) Check if any of the connector pins of the charger cleaner front/rear position detection switch is disconnected. (4) Check if the cleaning pads are damaged or removed. (5) Check if any of the connector pins of the charger cleaner motor is disconnected. (6) Replace the charger cleaner motor. (7) Replace the LGC board.
Code: C410
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, sub and front edge thermistors are in contact with the surface of the fuser belt properly? (3) Check if the harnesses of the main, sub and front edge thermistors are open-circuited. 2. Check the IH control 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 thermostats are blown. (4) Check if the connectors on the IH control board are disconnected (AC input connectors CN450, 451 and LGC I/F connectors CN455, 456). (5) Check if the IH control board or the switching power supply unit is abnormal. 3. Check the LGC board (1) Check if the connector CN358 is 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”, then press the [START] button. (3) Change the current status counter value “1” or “2” to “0”, then press the [ENTER] button or [INTERRUPT] button (to cancel [C410]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.
Code: C430
Description: Thermistor abnormality after abnormality judgment: Abnormality of the thermistor is detected after a specified period of time has passed from power-ON (including ready time or energy saving mode).
Remedy: 1.2.3. Check the thermistors, IH control board, IH coil and LGC board Check the above components following the procedure 1, 2 and 3 for [C410]. 4. Clear the status counter Change the current status counter value (08-400) “4” to “0” for [C430] and “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 : "4" or "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 sub thermistor is 230°C or higher: "9"
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 control board, IH coil and LGC board Check the above components following the procedure 1, 2 and 3 for [C410]. 4. Clear the status counter Change the current status counter value (08-400) “4” to “0” for [C430] and “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 : "4" or "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 sub thermistor is 230°C or higher: "9"