LG lg 42pc51 chassis pp-78a sm free download

File name lg_42pc51_chassis_pp-78a_sm.pdf

website:http://biz.LGservice.com PLASMA TV SERVICE MANUAL CHASSIS : PP78A MODEL : 42PC51 42PC51-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS CONTENTS ... 2 SAFETY PRECAUTIONS ...3 SPECIFICATION ...4 ADJUSTMENT INSTRUCTION ...6 TROUBLE SHOOTING ...16 BLOCK DIAGRAM...24 EXPLODED VIEW ... 26 EXPLODED VIEW PARTS LIST ... 27 REPLACEMENT PARTS LIST ... 28 SVC. SHEET ... PRINTED CIRCUIT DIAGRAM ... -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 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 or more sensitivity. It will also protect t