• Code: C1B0
• Description: LCF transport motor abnormality: The LCF transport motor is not rotating normally.
• Remedy: Is the LCF transport motor working? (Perform the output check in the test mode: 03-122/ 172) NO 1) Check if the connector CN1 of the LCF transport motor is disconnected. 2) Check if the connector CN102 on the LCF board is disconnected. 3) Check if the signal line connector CN100 on the LCF board is disconnected. 4) Check if the power line connector CN101 on the LCF board is disconnected. 5) Check if the connector CN310 on the LGC board is disconnected. 6) Check if the connector pins are disconnected and the harnesses are open circuited. 7) Check if the conductor patterns on the LCF transport motor board, LCF board and LGC board are short circuited or open circuited. 8) Replace the LCF transport motor. 9) Replace the LCF board. 10)Replace the LGC board. YES 1) Check if the connector pins are disconnected and the harnesses are open circuited. 2) Check if the conductor patterns on the LCF transport motor board, LCF board and LGC board are short circuited or open circuited. 3) Check if the PLL lock signal CN102-3 output from the LCF board is always “L” level. 4) Check if the voltage supplied to the microcomputer input terminal IC103-17 is always “L” level. 5) Replace the LCF transport motor. 6) Replace the LCF board. 7) Replace the LGC board.

• Code: C260
• Description: Peak detection error: Lighting of the exposure lamp (white reference) is not detected when power is turned ON.
• Remedy: Does the exposure lamp light? (Perform the output check in the test mode: 03-267) YES 1) Check if the connectors on the CCD and SLG boards are disconnected. 2) Check if the shading correction plate is dirty. 3) Check if the conductor pattern on the CCD board is short circuited or open circuited. 4) Check if the conductor pattern on the SLG board is short circuited or open circuited. 5) Replace the lens unit. 6) Replace the SLG board. NO 1) Check if the connectors of the exposure lamp and inverter are disconnected. 2) Check the SLG board if the connector pin CN9 is disconnected and the harness is short circuited or open circuited. 3) Check if the conductor pattern on the SLG board is short circuited or open circuited. 4) Replace the SLG board. 5) Replace the inverter. 6) Replace the exposure lamp.

• Code: C270
• 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 1) Check if the connector of the scan motor is disconnected. 2) Check if the connector pin is disconnected and the harness is short circuited or open circuited. 3) Replace the SLG board. NO 1) Check if the connector pin is disconnected and 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 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) Replace the carriage home position sensor. 3) Replace the SLG board. NO The carriages are stopped at the home position and do not move. 1) Check if the connector pins are disconnected and 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: 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 center, side and edge thermistors are in contact with the surface of the fuser roller properly? (3) Check if the harnesses of the center, side and edge thermistors are open circuited. 2. Check the heater (1) Check if the heater is broken. (2) Check if the connector of the heater is disconnected. (3) Check if the thermostat is blown. 3. Check the LGC board (1) Check if the connectors CN308 are disconnected. (2) Check if the conductor pattern on the LGC board is short circuited 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 [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: 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 state).
• Remedy: 1,2.3. Check the thermistors, Heater 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) “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 center thermistor is 230°C or higher: “9” • The temperature detected by the side thermistor is 230°C or higher: “9” • The temperature detected by the edge thermistor is 230°C or higher: “9” only during printing.

• 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, Heater 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) “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 center thermistor is 230°C or higher: “9” • The temperature detected by the side thermistor is 230°C or higher: “9” • The temperature detected by the edge thermistor is 230°C or higher: “9” only during printing.

• 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 CN308 is disconnected. (2) Check if the conductor pattern on the board is short circuited or open circuited. (3) Replace the LGC board. 3. Clear the status counter Change the current status counter value (08-400) “6” to “0”.