Panasonic tc-22lh1 technical guide Service Manual
Chapter 4 Audio Circuit Explanations
Figure 17
Audio Signal Block Diagram
Figure 17 provides a functional overview of the audio processing circuit. It contains an
MTS decoder that handles stereo separation of the multiplex audio signal received by
the tuner. The A/V switch IC3004 selects the desired audio signal from one of the A/V
inputs or the tuner. The selected signal is output to the audio control circuit. The audio
control circuit handles the surround sound application, volume, bass and treble control
of the unit. The equalizer circuit, when activated, enhances the
MTS decoder that handles stereo separation of the multiplex audio signal received by
the tuner. The A/V switch IC3004 selects the desired audio signal from one of the A/V
inputs or the tuner. The selected signal is output to the audio control circuit. The audio
control circuit handles the surround sound application, volume, bass and treble control
of the unit. The equalizer circuit, when activated, enhances the
frequency response of
everything you listen to. The Audio Amp IC amplifies the audio signal to a suitable level
for driving the speakers or headphone. The A/V input switch provides an output for use
with an external amplifier
for driving the speakers or headphone. The A/V input switch provides an output for use
with an external amplifier
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