Panasonic tc-22lh1 technical guide Service Manual

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Block Diagram Overview 
 
igure 10 contains a Block Layout overview of the LCD TV. The following is a 
 Board 
rd is comprised of the following, an AV switch responsible for switching all 
V Switch 
ch IC, located on the H board, handles the selection of the Composite, 
cted 
Figure 10 
F
description of each of the boards that are depicted in the block. 
 
H
The H boa
audio and video input signals, an audio control circuit which handles all available soun
adjustments and stereo sound separation (MTS decoder), a DC-to-DC converter and 
power input to the AP board.  
 
A
The AV Swit
Component, S -Video inputs and the output of the Tuner (B1) board. The Audio is 
switched through this IC to a Control Amplifier, which drives the speakers. The sele
video signals are output to the DG Board. 
 
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