• 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]OFF/[8]/[H]) NO 1. Check if the connector of the bridge unit opening/closing switch is disconnected. 2. Check if the connector CN302 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- 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]OFF/[8]/[H]) 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 CN302 on the LGC board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are opencircuited. 5. Check if the conductor patterns on the JSP board and LGC board are shortor 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]OFF/[8]/[H]) 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 CN302 on the OCT board is disconnected. 4. Check if the connector pins are disconnected and the harnesses are opencircuited. 5. Check if the conductor patterns on the OCT board and LGC board are shortor 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: 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 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 CN211 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 opencircuited. 5. Check if the conductor patterns on the ADU board and LGC board are shortor 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 connector of the exit motor is disconnected. 2. Check if the connector CN3 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the exit motor. 6. Replace the LGC board. YES Is the ADU motor working? (Perform the output check in the test mode: 03-110/160) NO 1. Check if the connector of the ADU motor is disconnected. 2. Check if any of the connectors CN211, CN212 and CN215 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 opencircuited. 5. Check if the conductor patterns on the ADU board and LGC board are shortor open-circuited. 6. Replace the ADU motor. 7. Replace the ADU board. 8. Replace the LGC board. YES Check the rollers in the ADU and the exit roller of the equipment. Replace them if they are worn out.

• 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 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 CN211 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 opencircuited. 5. Check if the conductor patterns on the ADU board and LGC board are shortor 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 connector CN304 on the LGC board is disconnected. 3. Check if the connector pins are disconnected and the harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the ADU clutch. 6. Replace the LGC board. YES Check the rollers in the ADU. Replace them if they are worn out.

• 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 opencircuited. 4. Check if the conductor pattern on the LGC board is short- or open-circuited. 5. Replace the sensor. 6. Replace the LGC board. YES Replace the LGC board.

• Code: E711
• Description: Jam not reaching the original length sensor: The original fed from the original feeding tray does not reach the original length sensor.
• Remedy: Are the pickup roller, feed roller and separation roller stained or worn out? YES Clean the rollers or replace them. NO Is the original excessively curled or folded? YES Flatten and set it again. NO Are the original length sensor and registration sensor working? (Perform the input check: 03-[FAX]ON/[8]/[E], /[2]/[A]) NO 1. Check if the connectors of the original length sensor and registration sensor are disconnected. 2. Check if the connector CN3 on the RADF board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are opencircuited. 4. Check if the conductor pattern on the RADF board is short- or open-circuited. 5. Replace the original length sensor and registration sensor. 6. Replace the RADF board. YES Replace the RADF board.

• Code: E712
• Description: Jam not reaching the registration sensor: The original fed from the original feeding tray does not reach the registration sensor.
• Remedy: Are the pickup roller, feed roller and separation roller stained or worn out? YES Clean the rollers or replace them. NO Is the original excessively curled or folded? YES Flatten and set it again. NO Are the original length sensor and registration sensor working? (Perform the input check: 03-[FAX]ON/[8]/[E], /[2]/[A]) NO 1. Check if the connectors of the original length sensor and registration sensor are disconnected. 2. Check if the connector CN3 on the RADF board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are opencircuited. 4. Check if the conductor pattern on the RADF board is short- or open-circuited. 5. Replace the original length sensor and registration sensor. 6. Replace the RADF board. YES Replace the RADF board.