Remedy: Is the cassette pushed in properly to the copier? N: Push in the cassette properly to the copier. Y: Is the harness between the LGC board and the cassette tray-up limit sensor open-circuited? Is the harness between the LGC board and the cassette tray-up motor open-circuited? Is the cassette tray-up limit sensor connector, cassette tray-up motor connector, or connector J106 on the LGC board disconnected? Y: 1. Reconnect the connector. 2. Replace the harness. N: Is the gear of the cassette tray-up motor unit broken? Y: Replace the gear. N: 1. Replace the cassette tray-up motor. 2. Replace the cassette tray-up limit sensor. 3. Replace the paper feed unit. 4. Replace the LGC board.
Code: C15
Description: 3rd cassette tray operation abnormal
Remedy: Is the cassette pushed in properly to the copier? N: Push in the cassette properly to the copier. Y: Is the harness between the LGC board and the cassette tray-up limit sensor open-circuited? Is the harness between the LGC board and the cassette tray-up motor open-circuited? Is the cassette tray-up limit sensor connector, cassette tray-up motor connector, or connector J106 on the LGC board disconnected? Y: 1. Reconnect the connector. 2. Replace the harness. N: Is the gear of the cassette tray-up motor unit broken? Y: Replace the gear. N: 1. Replace the cassette tray-up motor. 2. Replace the cassette tray-up limit sensor. 3. Replace the paper feed unit. 4. Replace the LGC board.
Code: C16
Description: 4th cassette tray operation abnormal
Remedy: Is the cassette pushed in properly to the copier? N: Push in the cassette properly to the copier. Y: Is the harness between the LGC board and the cassette tray-up limit sensor open-circuited? Is the harness between the LGC board and the cassette tray-up motor open-circuited? Is the cassette tray-up limit sensor connector, cassette tray-up motor connector, or connector J106 on the LGC board disconnected? Y: 1. Reconnect the connector. 2. Replace the harness. N: Is the gear of the cassette tray-up motor unit broken? Y: Replace the gear. N: 1. Replace the cassette tray-up motor. 2. Replace the cassette tray-up limit sensor. 3. Replace the paper feed unit. 4. Replace the LGC board.
Code: C18
Description: LCF tray operation abnormal
Remedy: Is the harness between the LGC board and the LCF unit open-circuited? Is the relay connector of the harness between the LGC board and the LCF unit or the connector J105 on the LGC board disconnected? Y: Reconnect the connector. Replace the harness. N: Are the switches and sensors in the LCF unit working properly? Y: 1. Replace the LCF tray motor. 2. Replace the LGC board. N: 1. Replace the sensors and switches. 2. Replace the LCF drive PC board or the LCF tray-down switch PC board. 3. Replace the LGC board.
Code: C27
Description: Carriage home position sensor not turning OFF within a fixed time
Remedy: Are the carriages stuck at a point other than the home position? Y: Check the SCM and SDV boards for any abnormal circuit. N: 1. Check if any connector pin is disconnected, or any harness is open- or short-circuited. 2. Check the scan motor drive pulley if its screws are loose. 3. Check if any conductor pattern on the SDV board is open- or short-circuited. 4. Check if any conductor pattern on the SCM board is open- or short-circuited. 5. Replace the SDV board. 6. Replace the SCM board.
Code: C28
Description: Carriage home position sensor not turning ON within a fixed time
Remedy: Do the carriages, after arriving at its home position, make a big noise? Y: Since the carriage home position sensor has not been turned ON, 1. Check if the sensor connector is disconnected. 2. Check the SDV and SCM boards for any abnormal circuit. N: Since the carriages do not move, 1. Check if any connector pin is disconnected, or any harness is open- or short-circuited. 2. Check if any conductor pattern on the SDV board is open- or short-circuited. 3. Check if any conductor pattern on the SCM board is open- or short-circuited. 4. Replace the SDV board. 5. Replace the SCM board