CHASSIS : LD01B MODEL : 42LD420/420N 42LD420/420N-ZA MODEL : 42LD428/420C 42LD428/420C-ZA BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. LG 42LD420 service manual (servis klavuzu)nun içinde elektronik devre şemasıda mevcuttur..