With the Panasonic LS50 portable DVD player error codes can sometimes be solved by turning on your device, taking out any disk, closing the tray and pushing the back skip, pause, and play buttons at the same time. Hold this for about 4 seconds and the screen will go blank then "initializing" will appear and your player will read your disks again. Hopefully. Alternatively you need to remove the back cover being careful not to damage the cables. You will find the servo motor and laser lamp on a metal structure connected to the body by three rubber suspensions, remove the whole structure and turn it upside down. Slowly move the small black rotating joints up or down, you will notice the shaft will start rotating and the laser lamp will move away from the servo motor releasing it from where it can get stuck. Return the back cover and screw the 12 screws and you are done.