Description: (1) 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 time. (2) Downloading firmware with an incorrect model. If the error occurs, the exposure lamp lights twice at the same 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 board are abnormal. NO 1) Check if the connector pin is disconnected or the harness is short circuited or open circuited. 2) Check if the conductor pattern on the SLG board is short circuited or open circuited. 3) Replace the SLG board.
Code: C280
Description: Carriage home position sensor not going ON within a specified 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 SLG board 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 circuited or open circuited. 2) Check if the conductor pattern on the SLG board is short circuited or open circuited. 3) 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: C411
Description: Thermistor or heater lamp abnormality at power-ON: Abnormality of 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 power voltage (1) Check if the power voltage is normal.(Is the voltage during the operation ±10% of the rated voltage?) 2.Check the thermistors (1) Check if the connectors are disconnected. (2) Check if the center and side thermistors (front, rear) are in contact with the surface of the fuser roller properly? (3) Check if the harnesses of the center and side thermistors (front, rear) are open circuited. 3. Check the heater (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 control board are disconnected (AC input connector and LGC I/F connectors CN455). (5) Check if the IH control board is abnormal. • Replace the IH control board. 4. Check the LGC board (1) Check if the connectors CN334 are disconnected. (2) Check if the conductor pattern on the LGC board is short circuited or open circuited. (3) Replace the LGC board. 5. Clear the status counter After repairing the matter which caused the error [C411/C412], perform the following: (1) Turn ON the power while [0] and [8] are pressed simultaneously. (2) Key in "400", then press [START]. (3) Change the current status counter value "1" or "2" to "0", then press [ENTER] or [INTERRUPT] (to cancel [C411/C412]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.
Code: C412
Description: Thermistor/heater lamp abnormality at power- ON: Thermistor abnormality is detected at power-ON or the fuser roller temperature does not rise within a specified period of time after power-ON.
Remedy: 1.Check the power voltage (1) Check if the power voltage is normal.(Is the voltage during the operation ±10% of the rated voltage?) 2.Check the thermistors (1) Check if the connectors are disconnected. (2) Check if the center and side thermistors (front, rear) are in contact with the surface of the fuser roller properly? (3) Check if the harnesses of the center and side thermistors (front, rear) are open circuited. 3. Check the heater (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 control board are disconnected (AC input connector and LGC I/F connectors CN455). (5) Check if the IH control board is abnormal. • Replace the IH control board. 4. Check the LGC board (1) Check if the connectors CN334 are disconnected. (2) Check if the conductor pattern on the LGC board is short circuited or open circuited. (3) Replace the LGC board. 5. Clear the status counter After repairing the matter which caused the error [C411/C412], perform the following: (1) Turn ON the power while [0] and [8] are pressed simultaneously. (2) Key in "400", then press [START]. (3) Change the current status counter value "1" or "2" to "0", then press [ENTER] or [INTERRUPT] (to cancel [C411/C412]). (4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.
Code: C443
Description: Heater lamp abnormality after abnormality judgment (not reaching to intermediate temperature)
Remedy: 1,2.3. Check the thermistors, Heater and LGC board Check the above components following the procedures 1, 2 and 3 for [C411/C412]. 4. Clear the status counter Change the current status counter value (08-400) "3", "5" , "6" , "9" , "19" , "21" , "22" , "23" , "24" , "25" , "27" or "29" to "0" for [C44X], taking the same procedure as that for [C41X]. • The status counter value is as follows in the following cases. - The error occurred during warming-up: "3", "5" or "6" - The error occurred after the equipment has become ready: "7" - The temperature detected by the center thermistor is 240°C or higher, the temperature detected by the side thermistor is 250°C or higher or the temperature detected by the edge thermistor is 270°C or higher: "9", "19", "21", "22", "23", "25", "27" or "29". - The error occurred during printing: "24" or "25" - The error occurred during energy saving: "26" or "27" - A paper jam occurred: "28" or "29"