4. Troubleshooting► Error CodeM1-3122► Error messageTray 1 cassette is pulled out. Insert it properly.► SymptomTray 1 is pulled out or the auto size sensor connector is not connected or broken.► Troubleshooting method1) Remove and insert Tray1 correctly.2) If Tray1 is not locked or pulled out without holding the locking lever, remove Tray1.3) Check if foreign substance or paper is inside the space between Tray1,2. If so, please remove it.4) If the problem persists, check that the auto size sensor is connected properly.(Refer to 3.3.20. Auto Size sensor)5) If the problem persists, replace the main board(JC92–02452A).Copyright© 1995-2016 SAMSUNG. All rights reserved. 4-150