• Code: E400
• Description: Right cover open jam (When ADU is not installed): The right cover has opened during printing.
• Causes: Right cover opening/closing switch MAIN board
• Remedy: 1 Is the right cover open? Yes Remove paper if there is any, then close the cover. No 2 2 Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[6]/[A]) Yes 3 No • Check if the connector for 24 V power supply is disconnected. • Check if the connector CN25 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the right cover opening/closing switch. 3 MAIN board • Replace the MAIN board.

• Code: E410
• Description: Toner supply cover open jam: The toner supply cover has opened during printing.
• Causes: Toner supply cover opening/ closing switch MAIN board
• Remedy: 1 Is the toner supply cover open? Yes Close the cover. No 2 2 Is the toner supply cover opening/closing switch working? (Perform the input check in the test mode: 03-[A]/ [D]) Yes 3 No • Check if the connector of the toner supply cover opening/closing switch is disconnected. • Check if the connector CN15 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the toner supply cover opening/ closing switch. • Replace the MAIN board. 3 Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[6]/ [A]) Yes 4 No • Check if the connector for 24 V power supply is disconnected. • Check if the connector CN25 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. 4 MAIN board • Replace the MAIN board.

• Code: E430
• Description: Right cover open jam (When ADU is installed): The right cover has opened during printing.
• Causes: Right cover opening/closing switch MAIN board
• Remedy: 1 Is the right cover open? Yes Remove paper if there is any, then close the cover. No 2 2 Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[6]/[A]) Yes 3 No • Check if the connector for 24 V power supply is disconnected. • Check if the connector CN25 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the right cover opening/closing switch. 3 MAIN board • Replace the MAIN board.

• Code: E440
• Description: Feed cover open jam: The feed cover has opened during printing.
• Causes: Feed cover opening/closing detection sensor MAIN board
• Remedy: 1 Is the feed cover open? Yes Remove the paper if there is any, then close the cover. No 2 2 Is the feed cover opening/ closing detection sensor working? (Perform the input check in the test mode: 03-[A]/ [E]) Yes 3 No • Check if the connector of the feed cover opening/closing detection sensor is disconnected. • Check if the connector CN27 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the feed cover opening/closing detection sensor. 3 Replacing board • Replace the MAIN board.

• Code: E510
• Description: Jam not reaching the ADU transfer sensor: The paper does not reach the ADU transfer sensor after it is switchbacked in the exit section.
• Causes: ADU transfer sensor MAIN board Exit motor ADU exit sensor Rollers in the ADU Exit roller
• Remedy: 1 Open the right cover. Is there any paper in front of the ADU transfer sensor? Yes Remove the paper. No 2 2 Is the ADU transfer sensor working? (Perform the input check in the test mode: 03-[FAX]OFF/[1]/ [C]) Yes 3 No • Check if the connector of the ADU transfer sensor is disconnected. • Check if the connector CN17 on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the MAIN board are short circuited or open circuited. • Replace the ADU transfer sensor. • Replace the MAIN board. 3 Is the exit motor (rotating in reverse) working? (Perform the output check in the test mode: 03-121/ 171) Yes 4 No • Check if the connector of the exit motor is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Replace the exit motor. • Replace the MAIN board. 4 ADU • Check the rollers in the ADU and the exit roller of the equipme

• 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)
• Causes: .
• Remedy: 1 Open the cover of the unit/ area whose picture is blinking on the control panel. Is there any paper on the transport path? Yes Remove the paper. No 2 2 Is the sensor in the jamming area working? (Perform the input check in the test mode: refer to the following table) Yes 3 No • Check if the connector of the sensor is disconnected. • Check if any of the connectors on the MAIN board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the MAIN board is short circuited or open circuited. • Replace the sensor. 3 MAIN board • Replace the MAIN board.

• Code: E552
• Description: Paper remaining jam on the transport path (when the cover is closed)
• Causes: Sensor in the jamming area. MAIN 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 MAIN board • Harness check • Connector check • Board check Notes: If the jam is occurring in the PFU, check the board in each unit. Registration area Right cover Registration sensor 03-[A]/[A] Exit area Right cover Exit sensor 03-[A]/[B] ADU Right cover ADU transfer sensor 03-[1]/[C] PFU PFU side cover PFU drawer feed sensor 03-[4]/[A]

• Code: E714
• Description: Feed signal reception jam: The feed signal is received even no original exists on the original feeding tray.
• Causes: Original empty sensor RADF board
• Remedy: Original empty sensor • Sensor check (Perform the input check: 03-[8]/[B]) • Lever check • Connector check • Harness check RADF board • Board check • Connector check (PA5) • Harness check