SC500 (Engine: Paper transport 1: Paper Feed, Duplex, Transport)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC501-01	B	1st Tray Lift Error (Main Machine)
		The 1st tray lift motor error detection count reaches 3 times. (Up to 2 times, reset instruction is displayed)
		1st tray upper limit sensor connector missing, malfunction, dirt 1st tray lift motor connector missing, disconnection, malfunction. Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor. Paper set incorrectly
		Reload the paper. Remove the foreign object. 1st tray upper limit sensor, 1st tray lift motor Check the harness. Reset the connector. Replace 1st paper feed unit, 1st tray Replace Paper transport IOB Replace
SC501-02	B	1st Tray Descent Error (Main Frame)
		The 1st tray descent motor error detection count reaches 5. (Up to 4, reset instruction is displayed.)
		1st tray upper limit sensor connector missing, malfunction, dirt 1st tray lift motor connector missing, disconnection, malfunction Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor. Paper set incorrectly Paper overload
		Reset the paper. Remove the foreign object. 1st tray upper limit sensor, 1st tray lift motor Check the harness. Reset the connector. Replace 1st paper feed unit, 1st tray Replace Paper transport IOB Replace

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC502-01	B	2nd Tray Lift Error (Main Frame)
		The 2nd tray lift motor error detection count reaches 3. (Up to 2, reset is displayed.)
		2nd tray upper limit sensor connector missing, malfunction, dirt 2nd tray lift motor connector missing, disconnection, malfunction Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Reset the paper. Remove the foreign object. 2nd tray upper limit sensor, 2nd tray lift motor Check the harness. Reset the connector. Replace 2nd paper feed unit, 2nd tray Replace Paper transport IOB Replace
SC502-02	B	2nd Tray Descent Error (Main Frame)
		The detection count of 2nd tray descent motor descent errors reaches a total of 5. (Up to 4, reset is displayed.)
		The 2nd paper feed tray upper limit sensor connector missing, malfunction, and dirt 2nd tray lift motor connector missing, disconnection, malfunction Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly Paper overload
		Reset the paper. Remove the foreign object. 2nd tray upper limit sensor, 2nd tray lift motor Check the harness. Reset the connector. Replace 2nd paper feed unit, 2nd tray Replace Paper transport IOB Replace

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC503-01	B	3rd Tray Lift Error (Paper Feed Unit PB3250)
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, and the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-02	B	3rd Tray Descent Error (Paper Feed Unit PB3250)
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, and the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-11	B	3rd Tray Lift Error (Upper tray of Paper Feed Unit PB3240)
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, and the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the LCIT transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken LCIT control board defective Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-12	B	3rd Tray Descent Error (Upper tray of Paper Feed Unit PB3240)
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position; the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-31	B	3rd Tray Lift Error (LCIT PB3260)
		Upper limit detection error (during descent) During tray initialization (upper limit detection/lower limit not detected), the tray base plate is lowered to check the tray base plate position, and the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. Upper limit detection error (during ascent) During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, and the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the LCIT transmits "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the right tray and the tray lift motor Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/not horizontal Paper feed roller missing item Pickup arm damage Foreign object, such as a paper scrap, is caught inside the right tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-32	B	3rd Tray Descent Error (LCIT PB3260)
		Lower limit detection error (during descent) During tray initialization (upper limit not detected/lower eject limit detection), the tray base plate is lowered to check the tray base plate position, and the lower limit sensor is not detected although a predetermined time elapsed. Alternatively, at paper end, the tray base plate is lowered, but the lower limit sensor is not detected although a predetermined time elapsed. Lower limit error (during ascent) During tray initialization (upper limit eject detection/lower limit detection), the tray base plate is raised to check the tray base plate position, and the lower limit sensor is detected although a predetermined time elapsed. *If an error occurs 3 times consecutively: LCIT transmits "3rd tray lower limit detection error" to the main machine. Up to 2 times consecutively, LCIT transmits "tray set incorrectly" to the main machine.
		Lift motor error/connector missing Lower limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the right tray and the tray lift motor Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/not horizontal Foreign object, such as a paper scrap, is caught inside the right tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-33	B	3rd Tray Paper Overload Error (LCIT PB3260)
		During tray initialization, both the upper limit and lower limit are detected 3 times consecutively. (Up to 2 times consecutively, LCIT transmits "tray set incorrectly" to the main machine
		Paper overload Paper set incorrectly Upper limit sensor error/connector missing Lower limit sensor error/connector missing Harness broken LCIT control board defective Foreign object, such as a paper scrap, is caught inside the right tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-34	B	3rd Tray Paper Position Error (LCIT PB3260)
		During left/right tray set, or when power is switched ON, or when transfer is complete, "open" is detected 3 times consecutively by end fence open/closed detection. (Up to 2 times consecutively, LCIT transmits "tray set incorrectly" to the main machine.)
		Paper set incorrectly (paper is offset from position for pushing end fence) Foreign object entry (foreign object is caught in the position for pushing end fence) End fence open/closed sensor error/connector missing Harness broken LCIT control board defective
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-35	B	3rd Tray Transfer Error (LCIT PB3260)
		Transfer end detection error At right tray paper end (right tray lower limit detection, left tray paper detection), left tray paper is transferred to the right tray, but the left tray paper sensor is detected although a predetermined time elapsed (paper missing is not detected), for 3 times consecutively. (Up to 2 times consecutively, LCIT transmits "tray set incorrectly" to the main machine.)
		Transfer motor error/connector missing Left tray paper sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the left tray and the tray transfer motor Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Transfer fence defective Foreign object, such as a paper scrap, is caught inside the left tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-36	B	3rd Tray Transfer HP Error (LCIT PB3260)
SC503-36	B	HP detection error (during transfer start) At right tray paper end (right tray lower limit detection, left tray paper detection), left tray paper is transferred to the right tray, but the left tray transfer fence HP sensor is detected although a predetermined time elapsed (HP sensor missing cannot be detected). HP detection error (during transfer fence HP return) During left tray transfer fence HP not detected (stop after paper transfer, during power supply ON, during left tray set), the left tray transfer fence is moved to HP, but the left tray HP sensor is not detected although a predetermined time elapsed. *If an error occurs 3 times consecutively: LCIT transmits "3rd paper feed tray transfer HP error" to the main machine. (Up to 2 times consecutively, LCIT transmits "tray set incorrectly" to the main machine.)
		Transport motor error/connector missing Left tray transfer fence HP sensor error/connector missing Harness broken LCIT control board defective Paper overload Foreign object, such as a paper scrap, is caught between the left tray and the tray transport motor Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Transfer fence defective Foreign object, such as a paper scrap, is caught inside the left tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC504-11	B	4th Tray Lift Error (Upper tray of Paper Feed Unit PB3240)* *When equipped with 1-tray paper feed unit and 2-tray paper feed unit
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC504-22	B	4th Tray Descent Error (Upper tray of Paper Feed Unit PB3240)* *When equipped with 1-tray paper feed unit and 2-tray paper feed unit
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC504-21	B	4th Tray Lift Error (Lower tray of Paper Feed Unit PB3240)
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC504-22	B	4th Tray Descent Error (Lower tray of Paper Feed Unit PB3240)
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC505-21	B	5th Tray Lift Error (Lower tray of Paper Feed Unit PB3240)* *When equipped with 1-tray paper feed unit and 2-tray paper feed unit
		Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 5 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 5. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC505-22	B	5th Tray Descent Error (Upper tray of Paper Feed Unit PB3240)* *When equipped with 1-tray paper feed unit and 2-tray paper feed unit
		Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the tray transmits a "tray set incorrectly" to the main machine.)
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper overload Foreign object, such as a paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 5 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 5. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC505-41	B	Side LCIT Limit Detection Error (LCIT RT3030)
		Upper limit detection error (during descent) During tray initialization (upper limit detection/lower limit not detected), the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed. Upper limit detection error (during ascent) During tray initialization (upper limit not detected /lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed. *If an error occurs for 3 times consecutively: the side LCIT transmits a "5th paper feed tray upper limit detection error" to the main machine. Up to 2 times consecutively, the side LCIT transmits a "tray set incorrectly" to the main machine.
		Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Tray control board defective Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/not horizontal Paper feed roller missing item Pickup arm defective Foreign object, such as a paper scrap, is caught inside the tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in the side LCIT are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in the side LCIT. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC505-42	B	Side LCIT Lower Limit Detection Error (LCIT RT3030)
		Lower limit detection error (during descent) During tray initialization (upper limit not detected /lower limit eject detection), the tray base plate is lowered to check the tray base plate position, but the lower limit sensor is not detected although a predetermined time elapsed. Alternatively, at paper end, the tray base plate is lowered, but the lower limit sensor is not detected although a predetermined time elapsed. Lower limit detection error (during ascent) During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the lower limit sensor is detected although a predetermined time elapsed. *If an error occurs for 3 times consecutively: the side LCIT transmits a "5th paper feed tray upper limit detection error" to the main machine. Up to 2 times consecutively, the side LCIT transmits a "tray set incorrectly" to the main machine.
		Lift motor error/connector missing Lower limit sensor error/connector missing Harness broken Tray control board defective Paper set incorrectly Timing belt damage/dropout Timing pulley damage/dropout Base plate damage/not horizontal Foreign object, such as a paper scrap, is caught inside the tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in the side LCIT are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in the side LCIT. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC505-43	B	Side LCIT Paper Overload Error (LCIT RT3030)
		During tray initialization, both the upper limit and lower limit are detected for 3 times consecutively (up to 2 times consecutively, the side LCIT transmits a "tray set incorrectly" to the main machine).
		Paper overload Paper set incorrectly Upper limit sensor error/connector missing Lower limit sensor error/connector missing Harness broken Tray control board defective Foreign object, such as a paper scrap, is caught inside the tray
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in the side LCIT are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in the side LCIT. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC508-00	B	Bypass Tray Size Detection Error
		The paper size detected on the bypass tray is different from any of the pattern of automatic size detection.
		Bypass Length Sensor or Bypass Width Sensor malfunction Bypass Length Sensor or Bypass Width Sensor harness disconnected
		Replace the Bypass Length Sensor, or Bypass Width Sensor. Replace the harness for Bypass Length Sensor, or Bypass Width Sensor.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC520-01	C	Registration Motor: Lock
SC520-02	C	Paper feed Motor: Lock
SC520-03	C	Transport Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken IOB defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC521-01	C	Duplex Entrance Motor: Lock
SC521-02	C	Duplex By-pass Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken IOB defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC522-00	C	Paper Exit Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 500msec, the error state of either register was detected at least 5 times.
		Motor defective Connector disconnected Harness broken IOB defective Encoder defective
		Replace the motor. Reset the connector. Replace the harness. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC530-00	D	Fusing Exhaust Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken IOB defective
		Replace the fusing exhaust fan. Reconnect the connector. Replace the harness. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC531-01	D	Development Intake Fan/Right Lock
SC531-03	D	Drive Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken IOB defective
		Replace the development intake fan/right for SC531-01, or drive cooling fan for SC531-03. Reconnect the connector. Replace the harness. Replace the Imaging IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC533-03	D	PSU Cooling Fan Lock
SC533-04	D	Controller Box Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken IOB defective
		Replace the PSU exhaust fan for SC533-01, PSU cooling fan for SC533-04 or controller box cooling fan for SC533-04. Reconnect the connector. Replace the harness. Replace the Paper Transport IOB (for SC533-01, -03). Replace the Imaging IOB (for SC533-04).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC534-01	D	Main Exhaust Fan Lock
SC534-02	D	Toner Supply Cooling Fan Lock
SC534-03	D	Ozone Exhaust Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken IOB defective
		Replace the development intake fan/right for SC534-01, or drive cooling fan for SC534-03. Reconnect the connector. Replace the harness. Replace the Imaging IOB (SC534-01, -02). Replace the Paper Transport IOB (for SC534-03).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC535-00	D	Paper Exit Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 100msec. If a lock signal is not obtained for 50 times consecutively.
		Motor defective Connector disconnected Harness broken IOB defective
		Replace the paper exit cooling fan. Reconnect the connector. Replace the harness. Replace the Imaging IOB.