LG液晶电视机维修手册基板（CHASSIS__LD91A）.pdfVIP

Internal Use Only North/Latin America Europe/Africa Asia/Oceania LCD TV SERVICE MANUAL CHASSIS : LD91A MODEL : 37LH3000 37LH3000-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 14 BLOCK DIAGRAM17 EXPLODED VIEW 18 SVC. SHEET Copyright ©2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE 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. General Guidance Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet. An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC Do not use