• Code: E4A0
• Description: Waste toner cover open jam (printing)
• Remedy: 1. Close the waste toner cover if it is opened. Remove if there is any paper before closing it. 2. Is the waste toner detection sensor working? (Perform the input check: 03-[FAXON]/[1]/[C]) 3. Check if the connector CN331 on the LGC board is disconnected from the waste toner detection sensor or the harnesses are open circuited. Correct if any. 4. Replace the waste toner detection sensor. 5. Replace the LGC board.

• Code: E4B0
• Description: Bridge unit open jam (printing): The bridge unit has opened during printing.
• Remedy: 1. Close the bridge unit if it is opened. Remove if there is any paper before closing it. 2. Is the bridge unit connecting detection switch working? (Perform the input check: 03-[COPYON]/ [7]/[B]) 3. Check if the connector CN308 on the LGC board is disconnected from the bridge unit connecting detection switch or the harnesses are open circuited. Correct if any. 4. Replace the bridge unit connecting detection switch. 5. Replace the LGC board.

• Code: E510
• Description: Jam not reaching the ADU entrance sensor: The paper does not reach the ADU entrance sensor after it is switchbacked in the exit section.
• Remedy: 1. Open the ADU and check if there is any paper in front of the ADU entrance sensor. * If the error still occurs, check the following. 2. Is the ADU entrance sensor working? (Perform the input check: 03-[FAX]ON/[4]/[B]) * If it is working properly, proceed to 7. If not, check 3 to 6 below. 3. Check if the connectors CN511 on the PFC board is disconnected from the ADU entrance sensor or the harnesses are open circuited. Check if the connectors CN491 and CN492 on the ADU board are disconnected. Correct if any. 4. Replace the ADU entrance sensor. 5. Replace the ADU board. 6. Replace the PFC board. 7. Is the reverse motor working? (Perform the output check: 03-132/134) * If it is working properly, proceed to 11. If not, check 8 to 10 below. 8. Check if the connector CN515 on the PFC board is disconnected from the reverse motor or the harnesses are open circuited. Correct if any. 9. Replace the reverse motor. 10.Replace the PFC board. 11.Is the ADU motor working? (Perform the output check: 03-144) * If it is working properly, proceed to 16. If not, check 12 to 15 below. 12.Check if the connectors CN511 on the PFC board is disconnected from the ADU motor or the harnesses are open circuited. Check if the connectors CN495 and CN491 on the ADU board are disconnected. Correct if any. 13.Replace the ADU motor. 14.Replace the ADU board. 15.Replace the PFC board. 16.Check the rollers in the ADU, the exit roller and the pressure spring of the equipment. Replace them if they are worn out.

• Code: E511
• Description: ADU misfeeding (Paper not reaching the ADU transport sensor-1)
• Remedy: 1. Is the duplexing unit path entrance sensor working? (Perform the input check: 03-[SCAN]ON/[3]/ [H].) * If it is working properly, proceed to 6. If not, check 2 to 5 below. 2. Check if the connector CN511 on the PFC board is disconnected from the duplexing unit path entrance sensor or the harnesses are open circuited. Correct if so (including CN491 and CN492 on the ADU board). 3. Check if the duplexing unit path entrance sensor is correctly installed or the actuator is properly moved. 4. Replace the duplexing unit path entrance sensor. 5. Replace the PFC board. 6. Are the reverse motor and the ADU motor-1 working? (Perform the output check: 03-134, 03- 146.) * If they are working properly, proceed to 11. If not, check 7 to 10 below. 7. Check if the connector CN515 on the PFC board is disconnected from the reverse motor or the ADU motor-1, or the harnesses are open circuited. Correct if so (including CN537 and CN539 on the DRV board). 8. Replace the reverse motor or the ADU motor-1. 9. Replace the DRV board. 10.Replace the PFC board. 11.Check if there is any abnormality on the driving section of each motor or the roller. Correct if any.

• Code: E540
• Description: ADU misfeeding (Paper not reaching the ADU feed sensor): Paper does not reach the duplexing unit path exit sensor after it has passed the duplexing unit path entrance sensor.
• Remedy: 1. Is the duplexing unit path exit sensor working? (Perform the input check: 03-[SCAN]ON/[3]/[G].) * If it is working properly, proceed to 6. If not, check 2 to 5 below. 2. Check if the connector CN511 on the PFC board is disconnected from the duplexing unit path exit sensor or the harnesses are open circuited. Correct if so (including CN491 and CN492 on the ADU board). 3. Check if the duplexing unit path exit sensor is correctly installed or the actuator is properly moved. 4. Replace the duplexing unit path exit sensor. 5. Replace the PFC board. 6. Are the ADU motor-1 and the ADU motor-2 working? (Perform the output check: 03-146, 03- 144.) * If they are working properly, proceed to 11. If not, check 7 to 10 below. 7. Check if the connector CN511 on the PFC board is disconnected from the ADU motor-1 or the ADU motor-2, or the harnesses are open circuited. Correct if so (including CN491 and CN495 on the ADU board). 8. Replace the ADU motor-1 or the ADU motor-2. 9. Replace the ADU board. 10.Replace the PFC board. 11.Check if there is any abnormality on the driving section of the two motors or the roller. Correct if any.

• Code: E550
• Description: Paper remaining jam on the transport path: The paper is remaining on the transport path when printing is finished (caused by a multiple paper feeding).
• Remedy: 1. Open the cover of the unit/area whose picture is flashing on the control panel and remove if there is any paper on the transport path. 2. Is the sensor in the jamming area working? (Perform the input check: Refer to the following table) 3. Check if the connector on the LGC board is disconnected from the corresponding sensor in the jamming area or the harnesses are open circuited. Correct if any. 4. Replace the sensor. 5. Replace the LGC board. Relation between the jamming area and the corresponding sensors/covers (If a jam is occurring in the ADU, LCF or PFP, check the board in each unit.)
  Registration area paper feed cover Registration sensor 03-[FAX]OFF/[7]/[F] 1st drawer feed sensor 03-[FAX]ON/[1]/[G] Exit area Fuser cover Exit sensor 03-[FAX]ON/[1]/[B] ADU ADU ADU entrance sensor 03-[FAX]ON/[4]/[B] ADU exit sensor 03-[FAX]ON/[4]/[A] Bypass unit Bypass unit Bypass feed sensor 03-[FAX]ON/[4]/[D] Feeding area (equipment) Paper feed cover 2nd drawer feed sensor 03-[FAX]ON/[1]/[F] 3rd drawer feed sensor 03-[FAX]OFF/[2]/[D] 4th drawer feed sensor 03-[FAX]OFF/[8]/[D] LCF LCF side cover LCF feed sensor 03-[FAX]OFF/[0]/[G] Bridge unit Bridge unit Bridge unit transport sensor-1 (Entrance sensor) 03-[FAX]OFF/[5]/[F] Bridge unit transport sensor-2 (Exit sensor) 03-[FAX]OFF/[5]/[D] Finisher Finisher door Sensors in the finisher

• Code: E570
• Description: Jam not reaching the bridge unit.
• Remedy: 1. Is the reverse sensor working? (Perform the input check: 03-[SCAN]ON/[3]/[E].)) * If it is working properly, proceed to 6. If not, check 2 to 5 below. 2. Check if the connector CN514 on the PFC board is disconnected from the reverse sensor or the harnesses are open circuited. Correct if so (including CN538 and CN539 on the DRV board). 3. Check if the reverse sensor is correctly installed or its detecting element is not damaged or stained. 4. Replace the reverse sensor. 5. Replace the PFC board. 6. Are the bridge unit transport entrance motor and the fuser motor working? (Perform the output check: 03-130, 03-129.) * If they are working properly, proceed to 11. If not, check 7 to 10 below. 7. Check if the connector CN515 on the PFC board is disconnected from the bridge unit transport entrance motor or the fuser motor, or the harnesses are open circuited. Correct if so (including CN537 and CN539 on the DRV board). 8. Replace the bridge unit transport entrance motor or the fuser motor. 9. Replace the DRV board. 10.Replace the PFC board. 11.Check if there is any abnormality on the driving section of each motor or the roller. Correct if any.

• Code: E580
• Description: Stop jam at the bridge unit
• Remedy: 1. Is the reverse sensor working? (Perform the input check: 03-[SCAN]ON/[3]/[E].)) * If it is working properly, proceed to 6. If not, check 2 to 5 below. 2. Check if the connector CN514 on the PFC board is disconnected from the reverse sensor or the harnesses are open circuited. Correct if so (including CN538 and CN539 on the DRV board). 3. Check if the reverse sensor is correctly installed or its detecting element is not damaged or stained. 4. Replace the reverse sensor. 5. Replace the PFC board. 6. Are the bridge unit transport exit motor and the reverse motor working? (Perform the output check: 03-132-134, 03-136.) * If they are working properly, proceed to 11. If not, check 7 to 10 below. 7. Check if the connector CN515 on the PFC board is disconnected from the bridge unit transport exit motor or the reverse motor, or the harnesses are open circuited. Correct if so (including CN537 and CN539 on the DRV board). 8. Replace the bridge unit transport exit motor or the reverse motor. 9. Replace the DRV board. 10.Replace the PFC board. 11.Check if there is any abnormality on the driving section of each motor or the roller. Correct if any.