LG lg ml042a chassis 15lw1r lcd tv sm 321 free download

File name lg_ml042a_chassis_15lw1r_lcd_tv_sm_321.pdf

website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : ML-042A MODEL: 15LW1R (15LW1R-ZD) CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS CONTENTS ... 2 PRODUCT SAFETY ...3 SPECIFICATION ...6 DISASSEMBLY ...10 SERVICE TEST PROGRAM ...12 TROUBLE SHOOTING ...15 BLOCK DIAGRAM...24 WIRING DIAGRAM ...29 EXPLODED VIEW ... 30 REPLACEMENT PARTS LIST ... 34 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 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 Do not use a line Isolation Transformer during this check. servicing of a receiver whose chassis is not isolated from the AC Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor power line. Use a transformer of adequate power rating as this between a known good earth ground (Water Pipe, Conduit, etc.) protects the technician from accidents resulting in personal injury and the exposed metallic parts. from electrical shocks. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt