LG LN-15A15, Service Manual

Page: 22 / 22

PRINTED CIRCUIT BOARD
MAIN(TOP)
MAIN(BOTTOM)
BLOCK DIAGRAM
PC INPUT
..
. .
H/P S-INPUT VIDEO INPUT
DC INPT
(12V)
V L R Y PB PR
POWER
DC to DC Converter
(SI786,SI4808DY,T801)
POWER
DC to DC Converter
(SI786,SI4808DY,T801)
IC302
H- FILTER
(DRP Processor)
LGTV-1001
IC302
H- FILTER
(DRP Processor)
LGTV-1001
IC301
Color Decoder/
A/D Converter
VPC-3230D
( 20.25MHz)
. COMB/ FIL : 4H
< INPUT >
. 4 CVBS
. 1 S- VHS
. 2 RGB/ YCrCb
. 1 F/B
. 1 CVBS OUTPUT
. Y/ Cr/ Cb OUTPUT
D4 Terminal DVD/DTV INPUT
(480i/480p/720p/1080i )
3.3V
IC601
Audio Processor
MSP-3440
SIF_IN
SC2_IN
SC2_OUT
SC3_IN
I2S : 2
------18.432MHz---
L-SPK/WOOFER
H/P, I2S
IC601
Audio Processor
MSP-3440
SIF_IN
SC2_IN
SC2_OUT
SC3_IN
I2S : 2
------18.432MHz---
L-SPK/WOOFER
H/P, I2S
8.0V 5.0V
L R
TUNER TUNER
ANT (RF) INPUT
CVBS
IC1
MICOM
(TXT/CAPTION)
6MHZ
IC1
MICOM
(TXT/CAPTION)
6MHZ
IC904
EPROM
AT27C020
IC904
EPROM
AT27C020
IC902
CPU
80C652
IC902
CPU
80C652
IC901
JAGASM
(SCALER / A/D Converter )
IC901
JAGASM
(SCALER A/D Converter / )
MEMORY MEMORY
IC912
SIL140
IC912
SIL140
TMDS TMDS
Audio AMP
LA4282
12V
L-SPK
R-SPK
MEMORY MEMORY
SYNC
SEP.
SYNC
SEP.
Y
H/V
A1
A2
C
SIF
SCL/SDA
8bit
8bit
5.0V 3.3V
LVDS LVDS
5.0V
. . . .
. . . .
. . .
3.3V
12V
5V
3.3V
5V
3.3V 2.5V
R/G/B
8/8/8BIT
PC-AUDIO
INPUT
CLK
H- sync
AGC
CAPTION
R/ G/ B/ FB
5.0V
Y/ U/ V
4:2:2
Y/ U/ V
4:2:2
S
C
L
/S
D
A
S
C
L
/S
D
A
33V
TO INVERTER
SCL
SDA
DVD/DTV-AUDIO
INPUT
33V
5V
S
C
L
/S
D
A
CONTROL(TOP)
CONTROL(BOTTOM)
WIRING DIAGRAM
CN2
CN3
P001B
MAIN1 PWB
P902
CN1
P1
P2
P602
P601
P201