Interconnect Diagram - LG RP-29FA40-M Service Manual

Lg color tv service manual
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The FA chassis was developed for consumer market pur-
pose. This manual covers 27v True Flat CRT only. The
chassis is divided in two sections, the large signal board
is containing the deflection, dynamic focus, power sup-
ply circuitry & shutdown circuit. A second board, lo-
cated on the left side of the figure, is employed for
processing the RF, audio, communication (main BUS),
deflection, IF and video signals, this chassis does not
require any other daughter board.
The Analog Flat chassis features a total of 9 IC's on the
small signal board, for RGB signal, video switching, (HV
sync signal processing included). This chassis only sup-
ports the NTSC-U (USA) video format and this is made
trough the IC2200, P221-01519, main video processor
located on the middle of the small signal board, which is
taking care of the IF, AGC, OSD switching, YUV process-
ing, Automatic Contrast Level Control Systems, SVM sup-
port, Audio/ Video & Chorma demodulation, including
Horizontal (East/West correction & X-ray protection) and
Vertical deflection signals. The IF signal come from the
WT1201, which is the main tuner.
OVERVIEW
CON2K6

Interconnect Diagram

A relationship between IC2200 and IC2990, P221-01438,
is linked, this last one is used for switching the video
signal inputs from the Front and Rear jacks. Also in-
volved is the digital comb filter IC2400, 221-01449,
which is used to separate the Y and C signals from any
composite video (RF or Video In). The YUV input is pro-
cessing directly through the IC2200.
The audio channels are applied to the audio processor
IC1400, 221-01127. The IC1400 is also processing the
TV- RF composite audio, this IC features function such
audio demodulation, SAP (second audio program), and
the audio processing for BASS, TREBLE and BALANCE ad-
justments, also includes the Surround and Soundrite fea-
tures.
Once the audio is processed by IC1400, both channels
are applied to the main stereo amplifier. The IC800, P221-
1488, is the final audio stage and its signal is applied
to the speakers.
1-1
SVM COIL
FA - GENERAL

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