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). Remedy: 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 Is the sensor in the jamming area working? (Perform the input check in the test mode: refer to the following table) NO.. 1) Check if the connector of the sensor is disconnected. 2) Check if any of the connectors 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 sensor. 6) Replace the LGC board. YES Replace the LGC board. Registration area Transfer cover Registration sensor 03-[FAX]ON/[2]/[A] 1st transport sensor 03-[FAX]OFF/[6]/[E] Exit area Transfer cover Exit sensor 03-[FAX]ON/[2]/[B]

  Code:  E520 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. Remedy: Open the ADU. Is there any paper in front of the ADU entrance sensor? YES Remove the paper. NO Is the ADU entrance sensor working? (Perform the input check in the test mode: 03-[FAX]OFF/[1]/[H]) NO 1) Check if the connector of the ADU entrance sensor is disconnected. 2) Check if either of the connectors CN562 or CN214 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 entrance sensor. 7) Replace the ADU board. 8) Replace the LGC board. YES Is the exit motor (rotating in reverse) working? (Perform the output check in the test mode: 03-121/171) NO 1) Check if the c

  Code:  E510 Description: Stop jam in the ADU: The paper does not reach the ADU exit sensor after it has passed the ADU entrance sensor. Remedy: Open the ADU. Is there any paper in front of the ADU exit sensor? YES Remove the paper. NO Is the ADU exit sensor working? (Perform the input check in the test mode: 03-[FAX]OFF/[1]/[G]) NO 1) Check if the connector of the ADU exit sensor is disconnected. 2) Check if either of the connectors CN562 or CN213 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 exit sensor. 7) Replace the ADU board. 8) Replace the LGC board. YES Is the ADU clutch working? (Perform the output check in the test mode: 03-222) NO 1) Check if the connector of the ADU clutch is disconnected. 2) Check if the connecto

  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.

  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:  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