Mitsubishi Electronics WS-48513, WS-55513, WS-65513, WS-73513, WS-48613, WS-55613, WS-65613, WS-65713, WS-73713, WS-55813, WS-65813 Projection Television User Manual


 
8-1
Chapter 8
Sound Circuitry
The V23 Sound Circuitry is shown above in the Over-
all Block Diagram, Figure 8-1.
The Sound Source Select circuitry selects the sound
source for both the main and sub pictures. The
sources correspond to the Video Inputs:
Main Tuner
Sub Tuner (monaural only)
Three External NTSC Inputs
Two Component Inputs (DVD)
DTV
DVI
VGA
DM (Analog Audio from a digital source)
The sound signal from the DM Module is initially
received in a digital format, from the ATSC/QAM
Tuner or the IEEE 1394 inputs.
The remainder of the circuitry is conventional:
MCS Decoder circuitry decodes the Main
Tuner sound signal, generating mono, stereo,
or SAP signals when broadcast.
Main picture sound from the Select circuitry
takes two paths:
1) To Audio Control circuitry
2) To the Monitor Outputs
The Audio Control circuitry performs adjust-
ments to the Volume, Treble, Bass, etc. The
outputs from Audio Control circuit are
directed to the Audio Amplifier, and then to
the set’s speakers.
Sub picture (PIP) sound, from the Source
Select circuit is directed to the PIP Sound
Output Jacks.
Figure 8-1: Sound Circuitry - Overall Block Diagram