• Code: E410
• Description: Front cover open jam: The front cover has opened during printing.
• Causes: Front cover opening/closing switch LGC board
• Remedy: 1 Is the front cover open? Yes Close the cover. No 2 2 Is the front cover opening/ closing switch working? (Perform the input check in the test mode: 03- [FAX]ON/[9]/[D]) Yes 3 No • Check if the connector of the front cover opening/closing switch is disconnected. • Check if the connector CN310 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the LGC board is short circuited or open circuited. • Replace the front cover opening/closing switch. • Replace the LGC board. 3 Is the voltage of 24V being supplied from the power supply unit? (Perform the input check in the test mode: 03-[FAX] ON/[2]/[A]) Yes 4 No • Check if the connector for 24 V power supply is disconnected. • Check if the connector CN301 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the LGC board is short circuited or open circuited. • Replace the LGC board. 4 LGC board • Replace the LGC board.

• Code: E420
• Description: PFP side cover open jam: The PFP side cover has opened during printing.
• Causes: PFP side cover opening/closing switch PFP board LGC board
• Remedy: 1 Is the PFP side cover open? Yes Remove the paper if there is any, then close the cover. No 2 2 Is the PFP side cover opening/closing switch working? (Perform the input check in the test mode: 03- [FAX]OFF/[2]/[A]) Yes 3 No • Check if the connector of the PFP side cover opening/closing switch is disconnected. • Check if either of the connectors CN241 or CN243 on the PFP board is disconnected. • Check if the connector CN318 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the PFP board and LGC board are short circuited or open circuited. • Replace the PFP side cover opening/ closing switch. • Replace the PFP board. • Replace the LGC board. 3 Replacing board • Replace the PFP board. • Replace the LGC board.

• Code: E430
• Description: ADU open jam: The ADU has opened during printing
• Causes: ADU opening/closing switch LGC board
• Remedy: 1 Is the ADU open? Yes Remove the paper if there is any, then close the ADU. No 2 2 Is the ADU opening/ closing switch working? (Perform the input check in the test mode: 03- [FAX]ON/[9]/[F]) Yes 3 No • Check if the connector of the ADU opening/ closing switch is disconnected. • Check if the connector CN311 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the LGC board are short circuited or open circuited. • Replace the ADU opening/closing switch. • Replace the LGC board. 3 Replacing board • Replace the LGC board.

• Code: E440
• Description: Feed cover open jam: The feed cover has opened during printing.
• Causes: Feed cover opening/closing detection sensor LGC 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- [FAX]ON/[9]/[E]) Yes 3 No • Check if the connector of the feed cover opening/closing detection sensor is disconnected. • Check if the connector CN311 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the LGC board is short circuited or open circuited. • Replace the feed cover opening/closing detection sensor. • Replace the LGC board. 3 Replacing board • Replace the LGC board.

• 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: 1 Is the LCF side cover open? Yes Remove the paper if there is any, then close the cover. No 2 2 Is the LCF side cover opening/closing switch working? (Perform the input check in the test mode: 03- [FAX]OFF/[4]/[B]) Yes 3 No • Check if the connector of the LCF side cover opening/closing switch is disconnected. • Check if either of the connectors CN1 or CN7 on the LCF board is disconnected. • Check if the connector CN318 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the LCF board and LGC board are short circuited or open circuited. • Replace the LCF side cover opening/ closing switch. • Replace the LCF board. • Replace the LGC board. 3 Replacing board • Replace the LCF board. • Replace the LGC board.

• Code: E480
• Description: Bridge unit open jam: The bridge unit has opened during printing.
• Causes: The bridge unit opening/closing switch LGC board
• Remedy: 1 Is the bridge unit open? Yes Remove the paper if there is any, then close the unit. No 2 2 Is the bridge unit opening/ closing switch working? (Perform the input check in the test mode: 03-[FAX]ON/[3]/[E]: e-STUDIO206L/256/306 / 03-[FAX]ON/[4]/[E]: e-STUDIO356/456/506) Yes 3 No • Check if the connector of the bridge unit opening/closing switch is disconnected. • Check if the connector CN302 / CN400 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor pattern on the LGC board is short circuited or open circuited. • Replace the bridge unit opening/closing switch. • Replace the LGC board. 3 Replacing board • Replace the LGC board.

• Code: E490
• Description: Job separator cover open jam: The job separator cover has opened during printing.
• Causes: JSP cover switch JSP board LGC board
• Remedy: 1 Is the JSP cover open? Yes Remove the paper if there is any, then close the cover. No 2 2 Is the JSP cover switch working? (Perform the input check in the test mode: 03- [FAX]ON/[3]/[E]) Yes 3 No • Check if the connector of the JSP cover switch is disconnected. • Check if either of the connectors CN260 or CN261 on the JSP board is disconnected. • Check if the connector CN302 on the LGC board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the JSP board and LGC board are short circuited or open circuited. • Replace the JSP cover switch. • Replace the JSP board. • Replace the LGC board. 3 Replacing board • Replace the JSP board. • Replace the LGC board.

• Code: E491
• Description: Offset tray cover open jam: The offset tray cover has opened during printing.
• Causes: OCT cover switch OCT board. LGC board
• Remedy: 1 Is the OCT cover open? Yes Remove the paper if there is any, then close the cover No 2 2 Is the OCT cover switch working? (Perform the input check in the test mode: 03- [FAX]ON/[3]/[E]) Yes 3 No • Check if the connector of the OCT cover switch is disconnected? • Check if either of the connectors CN260 or CN261 on the OCT board is disconnected. • Check if the connector CN302 on the OCT board is disconnected. • Check if the connector pins are disconnected and the harnesses are open circuited. • Check if the conductor patterns on the OCT board and LGC board are short circuited or open circuited. • Replace the OCT cover switch. • Replace the OCT board. • Replace the LGC board. 3 Replacing board • Replace the OCT board. • Replace the LGC board.