• Code: E400
• Description: Duplexing unit open jam
• Causes: Fuse LGC board Switching regulator Interlock switch
• Remedy: Duplexing unit • Close the duplexing unit if it is opened. Remove if there is any paper before closing it 24V power • 24V check (Perform the input check: 03-[COPY] ON/[6]/[A]) • Connector check • Harness check Fuse • Fuse check (F201, F202, F203, F204) • Board check LGC board • Connector check (CN312) • Board check Interlock switch • Switch check (Perform the input check: 03-[SCAN] ON/[4]/[G]) • Connector check • Harness check

• Code: E430
• Description: ADU open jam: The ADU has opened during printing.
• Causes: ADU opening/closing switch ADU board LGC board
• Remedy: ADU • Close the ADU if it is opened. Remove if there is any paper before closing it ADU opening/closing switch • Switch check (Perform the input check: 03-[SCAN]ON/[4]/[F]) • Connector check • Harness check ADU board • Connector check (CN211, CN217) • Board check LGC board • Connector check (CN338) • Board check

• Code: E440
• Description: Paper feed cover open jam: The paper feed cover has opened during printing.
• Causes: ADU opening/closing switch LGC board
• Remedy: Paper feed cover • Close the paper feed cover if it is opened. • Remove if there is any paper before closing it. Side door switch • Switch check (Perform the input check: 03-[COPY]ON/[8]/[H]) • Connector check • Harness check LGC board • Connector check (CN348) • Board check

• 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: Option LCF • Connect the LCF in the equipment. Option LCF installation sensor • Switch check (Perform the input check: 03-[SCAN]ON/[5]/[C]) • Connector check • Harness check LCF board • Connector check • Board check LGC board • Connector check (CN349) • Board 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: Bridge unit • Close the bridge unit if it is opened. • Remove if there is any paper before closing it. Bridge unit cover opening/closing detection switch • Switch check (Perform the input check: 03-[COPY]ON/[7]/[B], 03- [COPY]ON/[8]/[E]) • Connector check • Harness check LGC board • Connector check (CN334) • Board check

• Code: E4A0
• Description: Waste toner cover open jam (printing)
• Causes: Waste toner detection sensor LGC board
• Remedy: Waste toner cover • Close the waste toner cover if it is opened. • Remove if there is any paper before closing it. Waste toner detection sensor • Sensor check (Perform the input check: 03-[FAXON]/[1]/[C]) • Connector check • Harness check LGC board • Connector check (CN331) • Board check

• Code: E4B0
• Description: Bridge unit open jam (printing): The bridge unit has opened during printing.
• Causes: Bridge unit connecting detection switch LGC board
• Remedy: Reverse path cover • Close the bridge unit if it is opened. • Remove if there is any paper before closing it. Reverse path cover switch • Switch check (Perform the input check: 03-[COPYON]/[8]/[A]) • Connector check • Harness check LGC board • Connector check (CN331) • Board 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: Duplexing unit path entrance sensor Reverse motor ADU motor-2 PFC board ADU board DRV board Rollers
• Remedy: Duplexing unit path entrance sensor • Sensor check (Perform the input check: 03-[SCAN]ON/[3]/[H]) • Connector check • Harness check Reverse motor • Motor check (Perform the output check: 03-132/134) • Connector check • Harness check ADU motor-2 • Motor check (Perform the output check: 03-144) • Connector check • Harness check PFC board • Connector check (CN511, CN515) • Board check DRV board • Connector check (CN537, CN539) • Board check Drive unit, Rollers • Gear check • Roller check