Description: Original paper jam in the exit area of scanner
Causes: Jam has occurred inside the RADF unit.
Remedy: 1) Open the RADF cover. If there is jammed paper, remove it. 2) If this error occurs continually, check the following: a) Check if the exit actuator operates normally. b) Check if the exit sensor cable is connected correctly. c) If the connection is OK, replace the exit sensor.
Code: U3-4210
Description: Top door of scanner is open.
Causes: RADF cover is open.
Remedy: 1) Close the RADF cover properly. 2) If this error occurs continually, Check the following: a) Check the RADF cover open sensor and its harness. If there is a defective part, replace it. b) If both of them are normal, check the Cover-Open Rib. If it is broken, replace the Cover-Open.