• Code: E450
• Description: LCF side cover open jam: The LCF side cover has opened during printing.
• Remedy:

• Code: E480
• Description: Bridge unit open jam: The bridge unit has opened during printing.
• Remedy: Is the Bridge unit open? YES Remove the paper if there is any, then close the unit. NO Is the bridge unit cover opening/closing detection switch working? (Perform the input check: 03-[FAX]ON/[0]/[B]) NO 1. Check if the connector of the bridge unit cover opening/closing detection switch is disconnected. 2. Check if the connector CN351 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the bridge unit cover opening/closing detection switch. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E510
• Description: Stop jam in the ADU: The paper does not reach the ADU exit sensor after it has passed the ADU entrance sensor.
• Remedy: Open the ADU. Is there any paper in front of the ADU exit sensor? YES Remove the paper. NO Is the ADU exit sensor working? (Perform the input check: 03-[FAX]OFF/[8]/[H]) NO 1. Check if the connector of the ADU exit sensor is disconnected. 2. Check if either of the connectors CN211 or CN213 on the ADU board is disconnected. 3. Check if the connector CN340 on the LGC board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor patterns on the ADU board and LGC board are short- or open- circuited. 6. Replace the ADU exit sensor. 7. Replace the ADU board. 8. Replace the LGC board. YES Is the ADU clutch working? (Perform the output check: 03-222) NO 1. Check if the connector of the ADU clutch is disconnected. 2. Check if the connector CN340 on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the ADU clutch. 6. Replace the LGC board. YES Check the rollers in the ADU. Replace them if they are worn out.

• Code: E520
• 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: Open the ADU. Is there any paper in front of the ADU entrance sensor? YES Remove the paper. NO Is the ADU entrance sensor working? (Perform the input check: 03-[FAX]OFF/[8]/[G]) NO 1. Check if the connector of the ADU entrance sensor is disconnected. 2. Check if either of the connectors CN211 or CN214 on the ADU board is disconnected. 3. Check if the connector CN340 on the LGC board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor patterns on the ADU board and LGC board are short- or open- circuited. 6. Replace the ADU entrance sensor. 7. Replace the ADU board. 8. Replace the LGC board. YES Is the exit motor (rotating in reverse) working? (Perform the output check: 03-121/171) NO 1. Check if the connector of the exit motor is disconnected. 2. Check if the connectors CN437 and J434 on the DRV board is disconnected. 3. Check if the connector CN360 on the LGC board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor patterns on the DRV board and LGC board are short- or open-circuited. 6. Replace the exit motor. 7. Replace the DRV board. 8. Replace the LGC board. YES Is the ADU motor working? (Perform the output check: 03-110/160) NO 1. Check if the connector of the ADU motor is disconnected. 2. Check if any of the connectors CN211, CN212 and CN215 on the ADU board is disconnected. 3. Check if the connector CN340 on the LGC board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor patterns on the ADU board and LGC board are short- or open- circuited. 6. Replace the ADU board. 7. Replace the LGC board. YES Check the rollers in the ADU and the exit roller of the equipment. Replace them if they are worn out.

• 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: Open the cover of the unit/area whose picture is flashing on the control panel. Is there any paper on the transport path? YES Remove the paper. NO Is the sensor in the jamming area working? (Perform the input check: Refer to the following table) NO 1. Check if the connector of the sensor is disconnected. 2. Check if any of the connectors on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the sensor. 6. Replace the LGC board. YES Replace the LGC board.
  Registration area Exit area ADU Bypass unit Feeding area (equipment) LCF PFP Bridge unit Finisher Test Mode/Input check 03-[FAX]ON/[9]/[E] 03-[FAX]ON/[3]/[H] 03-[FAX]OFF/[7]/[H] 03-[FAX]OFF/[8]/[H] 03-[FAX]OFF/[8]/[G] 03-[FAX]ON/[9]/[D] 03-[FAX]ON/[3]/[G] 03-[FAX]OFF/[5]/[G] 03-[FAX]OFF/[2]/[D] 03-[FAX]OFF/[4]/[D] 03-[FAX]ON/[0]/[C] 03-[FAX]ON/[0]/[A] - Cover Jam access cover Fuser cover ADU Bypass unit Side cover LCF side cover PFP side cover Bridge unit Finisher door Sensor Registration sensor Upper drawer feed sensor Exit sensor ADU entrance sensor ADU exit sensor Bypass feed sensor Lower drawer feed sensor LCF feed sensor PFP upper drawer feed sensor PFP lower drawer feed sensor Bridge unit transport sensor-1 Bridge unit transport sensor-2 Sensors in the finisher

• Code: E711
• Description: Jam not reaching the original length sensor: The original fed from the original feeding tray does not reach the original length sensor.
• Remedy: Are the pickup roller, feed roller and separation roller stained or worn out? YES Clean the rollers or replace them. NO Is the original excessively curled or folded? YES Flatten and set it again. NO Are the original length sensor and registration sensor working? (Perform the input check: 03-[FAX]ON/[8]/[E], [7]/[H]) NO 1. Check if the connectors of the original length sensor and registration sensor are disconnected. 2. Check if the connector CN3 on the RADF board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the RADF board is short- or open-circuited. 5. Replace the original length sensor and registration sensor. 6. Replace the RADF board. YES Replace the RADF board. [E714] Feed signal reception jam Is the empty sensor working? (Perform the input check: 03-[FAX]ON/[7]/[B]) NO 1. Check if the lever of empty sensor is working normally. 2. Check if the connector of the empty sensor is disconnected. 3. Check if the connector CN5 on the RADF board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor pattern on the RADF board is short- or open-circuited. 6. Replace the empty sensor. 7. Replace the RADF board. YES Replace the RADF board.

• Code: E712
• Description: Jam not reaching the registration sensor: The original fed from the original feeding tray does not reach the registration sensor.
• Remedy: Are the pickup roller, feed roller and separation roller stained or worn out? YES Clean the rollers or replace them. NO Is the original excessively curled or folded? YES Flatten and set it again. NO Are the original length sensor and registration sensor working? (Perform the input check: 03-[FAX]ON/[8]/[E], [7]/[H]) NO 1. Check if the connectors of the original length sensor and registration sensor are disconnected. 2. Check if the connector CN3 on the RADF board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the RADF board is short- or open-circuited. 5. Replace the original length sensor and registration sensor. 6. Replace the RADF board. YES Replace the RADF board. [E714] Feed signal reception jam Is the empty sensor working? (Perform the input check: 03-[FAX]ON/[7]/[B]) NO 1. Check if the lever of empty sensor is working normally. 2. Check if the connector of the empty sensor is disconnected. 3. Check if the connector CN5 on the RADF board is disconnected. 4. Check if the connector pins are disconnected or the harnesses are open-circuited. 5. Check if the conductor pattern on the RADF board is short- or open-circuited. 6. Replace the empty sensor. 7. Replace the RADF board. YES Replace the RADF board.

• Code: E713
• Description: Stop jam at the original length sensor: The trailing edge of the original does not pass the original length sensor after its leading edge has reached this sensor.
• Remedy: Are the pickup roller, feed roller and separation roller stained or worn out? YES Clean the rollers or replace them. NO Is the original excessively curled or folded? YES Flatten and set it again. NO Are the original length sensor and registration sensor working? (Perform the input check: 03-[FAX]ON/[8]/[E], [7]/[H]) NO 1. Check if the connectors of the original length sensor and registration sensor are disconnected. 2. Check if the connector CN3 on the RADF board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are open-circuited. 4. Check if the conductor pattern on the RADF board is short- or open-circuited. 5. Replace the original length sensor and registration sensor. 6. Replace the RADF board. YES Replace the RADF board.