• Code: E410
• Description: Front cover open jam: The front cover has opened during printing.
• Remedy: Is the front cover open? YES Close the cover. NO Is the front cover opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]ON/[2]/[D]) NO 1) Check if the connector of the front cover opening/closing switch is disconnected. 2) Check if the connector CN303 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 front cover opening/closing switch. 6) Replace the LGC board. YES Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[FAX] ON/[1]/[C]) NO 1) Check if the connector for 24 V power supply is disconnected. 2) Check if the connector CN303 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: E420
• Description: PFP side cover open jam: The PFP side cover has opened during printing.
• Remedy: Is the PFP side cover open? YES Remove the paper if there is any, then close the cover. NO Is the PFP side cover opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]OFF/[2]/[F]) NO 1) Check if the connector of the PFP side cover opening/closing switch is disconnected. 2) Check if either of the connectors CN241 or CN243 on the PFP board is disconnected. 3) Check if the connector CN310 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 PFP board and LGC board are short circuited or open circuited. 6) Replace the PFP side cover opening/closing switch. 7) Replace the PFP board. 8) Replace the LGC board. YES 1) Replace the PFP board. 2) Replace the LGC board.

• Code: E430
• Description: ADU open jam: The ADU has opened during printing.
• Remedy: Is the ADU open? YES Remove the paper if there is any, then close the ADU. NO Is the ADU opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]OFF/[1]/[F]) NO 1) Check if the connector of the ADU opening/closing switch is disconnected. 2) Check if either of the connectors CN562 or CN217 on the ADU board is disconnected. 3) Check if the connector CN304 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 ADU board and LGC board are short circuited or open circuited. 6) Replace the ADU opening/closing switch. 7) Replace the ADU board. 8) Replace the LGC board. YES 1) Replace the ADU board. 2) Replace the LGC board.

• Code: E440
• Description: Side cover open jam: The side cover has opened during printing.
• Remedy: Is the side 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]/[F]) NO 1) Check if the connector of the side door switch 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 side door switch. 6) Replace the LGC board. YES Replace the LGC board.

• Code: E450
• Description: LCF side cover open jam: The LCF side cover has opened during printing.
• Remedy: Is the LCF side 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]/[D]) 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 CN310 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: 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 opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]ON/[3]/[F]) NO 1) Check if the connector of the bridge unit opening/closing switch is disconnected. 2) Check if the connector CN306 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 bridge unit opening/closing switch. 6) Replace the LGC board. YES Replace the LGC board

• Code: E490
• Description: Job separator cover open jam: The job separator cover has opened during printing.
• Remedy: Is the JSP cover open? YES Remove the paper if there is any, then close the cover. NO Is the JSP cover switch working? (Perform the input check in the test mode: 03-[FAX]ON/[3]/[F]) NO 1) Check if the connector of the JSP cover switch is disconnected. 2) Check if either of the connectors CN260 or CN261 on the JSP board is disconnected. 3) Check if the connector CN306 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 JSP board and LGC board are short circuited or open circuited. 6) Replace the JSP cover switch. 7) Replace the JSP board. 8) Replace the LGC board. YES 1) Replace the JSP board. 2) Replace the LGC board

• Code: E491
• Description: Offset tray cover open jam: The offset tray cover has opened during printing.
• Remedy: Is the OCT cover open? YES Remove the paper if there is any, then close the cover. NO Is the OCT cover switch working? (Perform the input check in the test mode: 03-[FAX]ON/[3]/[F]) NO 1) Check if the connector of the OCT cover switch is disconnected? 2) Check if either of the connectors CN260 or CN261 on the OCT board is disconnected. 3) Check if the connector CN306 on the OCT 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 OCT board and LGC board are short circuited or open circuited. 6) Replace the OCT cover switch. 7) Replace the OCT board. 8) Replace the LGC board. YES 1) Replace the OCT board. 2) Replace the LGC board.