LG lg ml04ab chassis rz20la90 lcd tv sm 450 free download

File name lg_ml04ab_chassis_rz20la90_lcd_tv_sm_450.pdf

website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : ML-041B MODEL : RZ-20LA90/RT-20LA90 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS CONTENTS ... 2 PRODUCT SAFETY ...3 SPECIFICATION ...6 ADJUSTMENT INSTRUCTION ...10 HOTEL MODE...12 TROUBLE SHOOTING ...15 BLOCK DIAGRAM...20 WIRING DIAGRAM ...22 EXPLODED VIEW ... 23 EXPLODED VIEW PARTS LIST ...24 REPLACEMENT PARTS LIST ... 26 SVC. SHEET ... -2- 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 Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. General Guidance Before returning the receiver to the customer, An isolation Transformer should always be used during the always perform an AC leakage current check on the exposed servicing of a receiver whose chassis is not isolated from the AC metallic parts of the cabinet, such as antennas, terminals, etc., to power line. Use a transformer of adequate power rating as this be sure the set is safe to operate without damage of electrical protects the technician from accidents resulting in personal injury shock. from electrical shocks. Leakage Current Cold Check(Antenna Cold Check) It will also protect the receiver and it's components from being With the instrument AC plug removed from AC sour