• Code: E410
• Description: Front cover open jam: The front cover has opened during printing.
• Remedy: Is the front cover open? → YES → Remove the paper if there is any, then close the cover. NO Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[FAX] ON/[9]/[H]) ↓ → NO → 1. Check if the connector for 24 V power supply is disconnected. 2. Check if the connector CN344 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short circuited or open circuited. 5. Replace the LGC board. YES Replace the LGC board.

• Code: E440
• Description: Right lower cover (feed cover) open jam: The feed cover has opened during printing.
• Remedy: Is the feed cover open? → YES → Remove the paper if there is any, then close the cover. NO Is the side door switch working? (Perform the input check in the test mode: 03-[FAX]ON/[2]/[A]) ↓ → NO → 1. Check if the connector of the feed cover sensor is disconnected. 2. Check if the connector CN304 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short circuited or open circuited. 5. Replace the feed cover sensor. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E450
• Description: Option LCF side cover open jam: The side cover of the Option LCF has opened during printing.
• Remedy: Is the LCF front cover open? → YES → Remove the paper if there is any, then close the cover. NO Is the LCF side cover opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]OFF/[5]/[B]) ↓ → NO → 1. Check if the connector of the LCF side cover opening/closing switch is disconnected. 2. Check if either of the connectors CN100 or CN106 on the LCF board is disconnected. 3. Check if the connector CN338 on the LGC board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are open circuited. 5. Check if the conductor patterns on the LCF board and LGC board are short circuited or open circuited. 6. Replace the LCF side cover opening/closing switch. 7. Replace the LCF board. 8. Replace the LGC board. YES 1. Replace the LCF board. 2. Replace the LGC board.

• Code: E460
• Description: Right center cover (bypass feed unit cover) open jam: The bypass feed unit cover has opened during printing.
• Remedy: Is the bypass feed unit cover open? → YES → Remove the paper if there is any, then close the bypass feed unit cover. NO Is the bypass feed unit cover sensor working? (Perform the input check in the test mode: 03-[ENERGY SAVER]OFF/[6]/[H]) ↓ → NO → 1. Check if the connector of the bypass feed unit cover sensor is disconnected. 2. Check if the connector CN338 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open-circuited. 4. Check if the conductor patterns on the LGC board are short- or opencircuited. 5. Replace the bypass feed unit cover sensor. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E470
• Description: Left lower cover (exit cover) open jam: The exit cover has opened during printing.
• Remedy: Is the exit cover close? → YES → Remove paper if there is any, then close the cover. NO Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[FAX] ON/[9]/[H]) ↓ → NO → 1. Check if the connector for 24V power supply is disconnected. 2. Check if the connector CN344 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short- or opencircuited. 5. Replace the LGC board. YES Is the exit cover switch working? (Perform the input check in the test mode: 03-[FAX]OFF/[7]/[A] ↓ → NO → 1. Check if the connector of the exit cover switch is disconnected. 2. Check if the connector CN335 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short- or opencircuited. 5. Replace the exit cover switch. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E510
• Description: Transport jam during duplex printing (paper not reaching reverse sensor-2): Paper which has passed the reverse sensor-1 does not reach the reverse sensor-2 during duplex printing.
• Remedy: Open the exit cover. Is there any paper in front of the reverse sensor-2? → YES → Remove the paper. NO Is the reverse sensor-1 working? (Perform the input check in the test mode: 03-[FAX]OFF/[1]/[G]) ↓ → NO → 1. Check if the connector of the reverse sensor-1 is disconnected. 2. Check if the connector CN335 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor patterns on LGC board are short circuited or open circuited. 5. Replace the reverse sensor-1. 6. Replace the LGC board. YES Is the horizontal transport section driving clutch working? (Perform the output check in the test mode: 03-222) ↓ → NO → 1. Check if the connector of the horizontal transport section driving clutch is disconnected. 2. Check if the connector CN334 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are open circuited. 4. Check if the conductor pattern on the LGC board is short circuited or open circuited. 5. Replace the horizontal transport section driving clutch. 6. Replace the LGC board. YES Is the Mylar at the reverse section normal? → NO → Replace the Mylar. YES Check the condition of the roller at the horizontal transport section and clean or replace it.

• Code: E511
• Description: Transport jam during duplex printing (paper not reaching horizontal transport sensor-1): Paper which has passed the reverse sensor-2 does not reach the horizontal transport sensor-1 during duplex printing.
• Remedy: Is there any paper at the reverse section when the exit cover is opened? → YES → Remove the paper. NO Is the Horizontal transport sensor-1 working? (Perform the input check in the test mode: 03-[FAX]OFF/[9]/[F]) ↓ → NO → 1. Check if the connector of the Horizontal transport sensor-1 is not disconnected. 2. Check if the connector CN334 on the LGC board is not disconnected. 3. Check if the connector pins are not disconnected and the harness is not open circuited. 4. Check if the conductor pattern on the LGC board is not short circuited or open circuited. 5. Replace the Horizontal transport sensor-1. 6. Replace the LGC board. YES Is the transport roller 1/2 at the horizontal transport section rotating? (Perform the output check in the test mode: 03-110/220) ↓ → NO → 1. Check if the connectors of the and horizontal transport section driving clutch-1 and horizontal transport section driving clutch-2 are not disconnected. 2. Check if the connectors of the and horizontal transport section driving clutch-1 and and horizontal transport section driving clutch-2 are not misconnected (drive clutch: black-black, transport clutch 1: bluepurple). 3. Check if the connector CN334 on the LGC board is not disconnected. 4. Check if the connector pins are not disconnected and the harness is not open circuited. 5. Check if the conductor pattern on the LGC board is not short- or open circuited. 6. Replace the transport drive clutch and transport clutch 1. 7. Replace the LGC board. 8. Check if the front side timing belt is put on properly. 9. Check the installation state of the horizontal transport section driving clutch-1. YES Check the condition of the rollers at the horizontal transport section and clean or replace them.

• Code: E512
• Description: Transport jam during duplex printing (paper not reaching horizontal transport sensor-2): Paper which has passed the horizontal transport sensor-1 does not reach the horizontal transport sensor-2 during duplex printing.
• Remedy: Is there any paper at the reverse section when the exit cover is opened? → YES → Remove the paper. NO Is the Horizontal transport sensor-2 working? (Perform the input check in the test mode: 03-[FAX]OFF/[9]/[G]) ↓ → NO → 1. Check if the connector of the Horizontal transport sensor-2 is not disconnected. 2. Check if the connector CN334 on the LGC board is not disconnected. 3. Check if the connector pins are not disconnected and the harness is not open circuited. 4. Check if the conductor pattern on the LGC board is not short- or open-circuited. 5. Replace the Horizontal transport sensor-2. 6. Replace the LGC board. YES Is the transport roller 3/4 at the horizontal transport section rotating? (Perform the output check in the test mode: 03-110/221) ↓ → NO → 1. Check if the connectors of the horizontal transport section driving clutch-1 and horizontal transport section driving clutch-3 are not disconnected. 2. Check if the connectors of the horizontal transport section driving clutch-1 and horizontal transport section driving clutch-3 are not misconnected (drive clutch: black-black, transport clutch 2: blackblue) 3. Check if the connector CN334 on the LGC board is not disconnected. 4. Check if the connector pins are not disconnected and the harness is not open circuited. 5. Check if the conductor pattern on the LGC board is not short- or open-circuited. 6. Replace the and horizontal transport section driving clutch-1 and and horizontal transport section driving clutch-2. 7. Replace the LGC board. 8. Check if the front side timing belt is put on properly. YES Check the condition of the rollers at the horizontal transport section and clean or replace them