VD Tech PD196I93R1 free download

File name VD TECH PD196I93R1.pdf

COLOR TFT-LCD TV SERVICE MANUAL MODEL : PDI-P23LCD CAUTION !! BEFORE SERVICING THE TFT-LCD TV, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. PDI-P23LCD SERVICE MANUAL Document Number: PD196-093 Rev 1 CONTENTS Contents ------------------------------------------------------------------------- 2 Safety precautions ----------------------------------------------------------- 3 Servicing precautions ------------------------------------------------------- 4 Specifications ------------------------------------------------------------------ 5 Location of control ----------------------------------------------------------- 8 External input / output -------------------------------------------------------11 Inspection instructions ------------------------------------------------------12 Deassembly procedure ---------------------------------------------------- 13 Wire dressing ------------------------------------------------------------------ 21 Part appearance ---------------------------------------------------------------23 Trouble Shooting ------------------------------------------------------------- 25 Schematic Diagram -----------------------------------------------------------27 Block Diagram ----------------------------------------------------------------- 28 PCB Layout --------------------------------------------------------------------- 29 Wave form -----------------------------------------------------------------------34 Adjustment instruction with Default Factory Data----------------- 37 Packing instructions ---------------------------------------------------------39 Mechnical exploded view ---------------------------------------------------40 Replacement part list -------------------------------------------------------- 41 Circuit descriptions ---------------------------------------------------------- 47 PDI-P23LCD SERVICE MANUAL PAGE: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. Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet. Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug of the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS, which is, corresponds to 0.5mA. In case any measurement is out of the limits specified,