• Code: E450
• Description: LCF side cover open jam: The LCF side cover has opened during printing.
• Causes: LCF side cover opening/ closing switch LCF board LGC board
• Remedy: LCF side cover opening/ closing switch • Is the PFP side cover opening/closing switch working? (Perform the input check: 03-[FAX] ON[0]/[D]) • Connector check (CN349, CN1, CN6) • Harness check LCF board • Board check • Connector check (CN1, CN6) • Harness check LGC board • Board check • Connector check (CN349) • Harness check

• Code: E480
• Description: Bridge unit open jam: The bridge unit has opened during printing.
• Causes: Bridge unit cover opening/ closing detection switch LGC board
• Remedy: closing detection switch • Is the PFP side cover opening/closing switch working? (Perform the input check: 03-[FAX] OFF[5]/[E]) • Connector check (CN334) • Harness check LGC board • Board check • Connector check (CN334) • Harness check

• Code: E4A0
• Description: Waste toner cover open jam: The waste toner cover has opened during printing.
• Causes: Waste toner cover open/close detection switch LGC board
• Remedy: Waste toner cover open/close detection switch • Is the waste toner cover open/close detection switch working? (Perform the input check: 03-[FAX] OFF[1]/[H]) • Connector check (CN359) • Harness check LGC board • Board check • Connector check (CN359) • Harness check

• 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.
• Causes: ADU entrance sensor Exit motor ADU motor LGC board ADU board Rollers in the ADU Replace it if it is worn out. Exit roller Replace it if it is worn out. Pressure spring
• Remedy: Paper falling on the inner tray ADU Check if the connector between the ADU and equipment is connected. Paper jamming at the exit gate section Drawer Check that paper is not skewed in the side guides of the drawer. Change the setting value of 08-4564 from "0" to "1".Check the setting size and paper size. Example: Check if the paper size is A4 though A3 is set. Fuser Unit Check that springs are securely attached to the separation finger. Stop in the fuser unit / scratches on the leading edge of paper Fuser Unit Check if the bracket or jam releasing guide of the fuser unit is deformed. Replace it if needed. All ADU entrance sensor • Sensor check (Perform the input check: 03- [FAX]ON/[4]/[B]) • Connector check (CN338, CN440, CN441) • Harness check Exit motor • Motor check (Perform the output check: 03-121/ 171) • Connector check (CN332) • Harness check ADU motor • Motor check (Perform the output check: 03-110/ 160) • Connector check (CN338, CN440, CN445) • Harness check LGC board • Board check • Connector check (CN338) • Harness check ADU board • Board check • Connector check (CN440, CN441, CN445) • Harness check

• Code: E520
• Description: Stop jam in the ADU: The paper does not reach the ADU exit sensor after it has passed the ADU entrance sensor.
• Causes: ADU entrance sensor ADU clutch LGC board ADU board Rollers in the ADU Replace it if it is worn out.
• Remedy: ADU entrance sensor • Sensor check (Perform the input check: 03-[FAX]ON/[4]/[A]) • Connector check (CN440, CN442, CN338) • Harness check ADU clutch • Clutch check (Perform the output check: 03-222) • Connector check (CN338, J564) • Harness check LGC board • Board check • Connector check (CN338) • Harness check ADU board • Board check • Connector check (CN440, CN442) • Harness check

• Code: E550
• Description: Paper remaining jam on the transport path: The paper is remaining on the transport path when printing is finished.
• Causes: 1st drawer feed sensor LGC board
• Remedy: 1st drawer feed sensor • Sensor check (Perform the input check: 03-[FAX]ON/[1/[G]) • Connector check (CN337) • Harness check LGC board • Board check • Connector check (CN337) • Harness check

• Code: E551
• Description: Paper remaining jam on the transport path (when a service call occurs)
• Causes: Feed or transport roller possibly causing multiple feeding Sensor in the jamming area Refer to the table below. LGC board
• Remedy: 1 Jamming transport path Open the cover of the unit/area whose picture is flashing on the control panel and remove any paper on the transport path. 2 Sensor in the jamming area • Sensor check (Refer to the table below) • Harness check • Connector check 3 LGC board • Harness check • Connector check • Board check Notes: If the jam is occurring in the ADU, LCF or PFP, check the board in each unit.
  Registration area Jam access cover Registration sensor 03-[FAX][COPY]OFF/[7]/[F] Paper clinging detection sensor 03-[FAX][COPY]OFF/[7]/[E] 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) Side cover 2nd drawer feed sensor 03-[FAX]ON/[1]/[F] LCF LCF side cover LCF feed sensor 03-[FAX][COPY]OFF/[0]/[G] PFP PFP side cover PFP upper drawer feed sensor 03-[FAX][COPY]OFF/[2]/[D] PFP lower drawer feed sensor 03-[FAX][COPY]OFF/[8]/[D] Bridge unit Bridge unit Bridge unit transport sensor-1 (Entrance sensor) 03-[FAX][COPY]OFF/[5]/[F] Bridge unit transport sensor-2 (Exit sensor) 03-[FAX][COPY]OFF/[5]/[D] Finisher Finisher door Sensors in the finisher

• Code: E552
• Description: Paper remaining jam on the transport path (when the cover is closed)
• Causes: Feed or transport roller possibly causing multiple feeding Sensor in the jamming area Refer to the table below. LGC board
• Remedy: 1 Jamming transport path Open the cover of the unit/area whose picture is flashing on the control panel and remove any paper on the transport path. 2 Sensor in the jamming area • Sensor check (Refer to the table below) • Harness check • Connector check 3 LGC board • Harness check • Connector check • Board check Notes: If the jam is occurring in the ADU, LCF or PFP, check the board in each unit.
  Registration area Jam access cover Registration sensor 03-[FAX][COPY]OFF/[7]/[F] Paper clinging detection sensor 03-[FAX][COPY]OFF/[7]/[E] 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) Side cover 2nd drawer feed sensor 03-[FAX]ON/[1]/[F] LCF LCF side cover LCF feed sensor 03-[FAX][COPY]OFF/[0]/[G] PFP PFP side cover PFP upper drawer feed sensor 03-[FAX][COPY]OFF/[2]/[D] PFP lower drawer feed sensor 03-[FAX][COPY]OFF/[8]/[D] Bridge unit Bridge unit Bridge unit transport sensor-1 (Entrance sensor) 03-[FAX][COPY]OFF/[5]/[F] Bridge unit transport sensor-2 (Exit sensor) 03-[FAX][COPY]OFF/[5]/[D] Finisher Finisher door Sensors in the finisher