• Code: C262
• Description: Communication error between the CCD board and the SYS board. Peak detection error (the light source is extremely light)
• Causes: Lens unit SYS board Harnesses
• Remedy: 1 Lens unit 1. Check if the connector is properly connected all the way in the CCD board. 2. Check if there is any abnormality in the appearance of parts mounted on the CCD board. 3. Check if +5V is output to the lens unit. 4. Check if the voltage is output from the CCD board. 5. Replace the Lens unit. 2 SYS board 1. Check if the connector is properly connected all the way in the SYS board. (CN120) 2. Check if there is any abnormality in the appearance of parts mounted on the SYS board. 3. Check if +5V is output to the SYS board. 4. Replace the SYS board. 3 Harnesses 1. Check if the harness has any scratch on it or is open circuited or caught anywhere. 2. Check if there is any abnormality in the connector terminal or the contacting surface of the flat harness. 3. Replace the harness between the SYS board and the CCD board.

• Code: C270
• Description: Carriage home position sensor not going OFF within a specified time / Downloading firmware with an incorrect model
• Causes: CCD board Carriage home position sensor Carriage home position sensor harness. SYS board Scan motor Scan motor harness
• Remedy: 1 Carriage locking Check if the carriage locking screw for packaging is attached. 2 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 CCD board are abnormal. No 3 3 CCD board • Check if the connector pin is disconnected or the harness is short circuited or open circuited. (CN001) • Check if the conductor pattern on the CCD board is short circuited or open circuited. • If the model of the firmware downloaded is incorrect, a C270 error (exposure lamp blinks twice) occurs. If the exposure lamp blinks twice, download the correct firmware. 4 Carriage home position sensor 1. Check if the harness of the carriage home position sensor is connected properly. (CN121, J002) 2. Check if the harness is caught or open circuited. 5 SYS board 1. Check if the connector of the SYS board (CN120, CN121, CN124, CN105) is connected properly. 2. Check if the mounted parts on the SYS board are damaged or abnormal. 3. Check if 24 V (CN105) on the SYS board is short circuited. 4. Check if 24 V is supplied to the SYS board (CN105). 6 Scan motor 1. Check if the belt tension is loosened. 2. Check if the motor fixing screw is loosened. 3. Check if the carriage wire and the timing belt come off. 4. Check if the connector (CN124) is connected to the motor properly. 5. Check if the harness of the motor is caught or open circuited. 7 Setting Clear the SRAM.

• Code: C280
• Description: Carriage home position sensor not going ON within a specified time
• Causes: Carriage home position sensor Carriage home position sensor harness SYS board Scan motor Scan motor harness
• Remedy: 1 Carriage locking Check if the carriage locking screw for packaging is attached. 2 Carriage hole position sensor 1. Check if the harness is properly connected to the sensor. 2. Check if the harness is caught or open circuited. 3 SYS board 1. Check if the harness (CN121, J002) of the carriage home position sensor is connected properly. 2. Check if the mounted parts on the SYS board are damaged or abnormal. 3. Check if 24 V (CM105) on the SYS board is short circuited. 4. Check if 24 V is supplied to the SYS board (CN105). 4 Scan motor 1. Check if the belt tension is loosened (if the motor screw is loosened). 2. Check if the carriage wire and the timing belt come off. 3. Check if the connector (CN124) is connected to the motor properly. 4. Check if the harness of the motor is caught or open circuited.

• Code: C290
• Description: The scanning system does not operate due to a blowout of the fuse in the scanning system.
• Causes: SYS board Fuse (F203) Power supply harness LVPS
• Remedy: Is 24V supplied to the SYS board? Yes Check the following because the signal for checking 24V on the SYS board is abnormal. 1. Check if the scanner CPU (IC26) is damaged or abnormal. 2. Check if the mounted parts on the SYS board are damaged or abnormal. 3. Check if 24V on the SYS board is short circuited. 4. Check if 24V is supplied to the SYS board (CN125). No 1. Check if the 24V supply harness is properly connected to the connector (CN125). 2. Check if 24V and SG on the SYS board are short circuited. 3. Check if the power supply is short circuited by pulling out the supply harness on the SYS board (CN125). 4. Check if the fuse on the LVPS (F203) is open circuited. 5. Check if there is no abnormality on the LVPS.

• Code: C3D0
• Description: EPU board memory overwriting error
• Causes: EPU memory board LGC board
• Remedy: Process unit Check if the process unit is properly installed, and check if the connector pins that are connected to the equipment are disconnected or have any abnormality such as deformation. EPU memory board Check if the harness connected to the connector J451 on the EPU board has any abnormality.

• Code: C3D1
• Description: EPU board memory new parts detection error
• Causes: EPU memory board LGC board
• Remedy: Process unit 1. If the process unit has been replaced with a new one before the equipment is started, turn the power OFF and then back ON in the EPU replacement mode. 2. If the process unit has not been replaced, check the following. 3. Check if the process unit is properly installed, and check if the connector pins that are connected to the equipment are disconnected or have any abnormality such as deformation. 4. Check if the harness connected to the connector J451 on the EPU board has any abnormality.

• Code: C3D2
• Description: EPU board memory old parts detection error
• Causes: EPU memory board LGC board
• Remedy: Process unit EPU memory board 1. Check if the process unit is a new one. If it is a new one, check the following: 2. Check if the process unit is properly installed, and check if the connector pins that are connected to the equipment are disconnected or have any abnormality such as deformation. 3. Check if the harness connected to the connector J451 on the EPU board has any abnormality.

• Code: C411, C412
• Description: Thermistor / heater lamp abnormality at power-ON
• Causes: Power supply unit. Thermistor LGC board
• Remedy: 1 Fuser unit • Check that the fuser unit is installed properly. • Check if the drawer connector of the fuser unit is damaged or its connection is detected. 2 Power voltage Check if the power voltage is normal.(Is the voltage during the operation ±10% of the rated voltage?) 3 Thermistor • Check if the center, side and front thermistor are installed properly. • Check if the harnesses of the center, side and front thermistor are open circuited. • Check if the connectors of the center, side and front thermistor are disconnected (J623, J621, CN308). 4 Power supply unit and fuser unit • Is the fuser unit installed correctly? • Check if the heater lamp is broken. • Check if the terminal of the heater lamp is attached securely. • Check if the center and side thermostat are blown • Check if the drawer connector is damaged or its connection is detected. • Check if the connectors of the power supply unit are disconnected (CN504, CN508). • Check if the power supply unit is abnormal. 5 LGC board • Check if the connectors CN301 and CN308 are disconnected. • Check if the conductor pattern on the LGC board is short circuited or open circuited. 6 Status counter After repairing the matter which caused the error [C411/ C412], perform the following: • Perform FS-08-2002. • Change the current status counter value “1“, “2“ or “4“ to “0”. • Turn the power OFF and then back ON. Make sure that the equipment enters the normal ready state.