LG RT-20LA30, Service Manual

Page: 26 / 31

BLOCK DIAGRAM
TUNERTUNER
... .
DC OUT (12V)
DVD/DTV (480I/480P)
H/P S-
VIDEO
A/V IN
A/V OUT
DC IN (15V)
ANT (RF)
Y PB PR L R V L R
V L R
SCART JACK
R/G/B/FB L/
Rin
TV/L/R out
Y/U/V in
VIDEO RAM
2M
EEP
ROM EEP
ROM
SCALER(Format Converter)
MX88L-284FC-V
14.318MHz
AD Converter AD9884AKS Multi-Component Processor(BBVSP) CXA 2101AQ YCrCb : 2 / 4 RGB : 4 / 2 OUT RGB :1, TUV : 1
Audio Processor MSP-34XX RF : 2, SCART : 4 MONO : 1 I2S : 2 ------18.432MHz--- L-SPK/WOOFER H/P, I2S SCART OUT : 2
IC302
SCAN Converter
SDA-9410
27.0MHz
IC301
H- FILTER
(DRP Processor)
LGTV-1001
IC201
Color Decoder/ A/D Converter VPC-3230D
. COMB/FIL : 4H INPUT . 4 CVBS . 1 S-VHS . 2 RGB/
YCrCb
. 1 F/B . 1 CVBS OUTPUT . Y/
Cr
/Cb
OUTPUT
IC1
MICOM / TXT
6.0MHz
POWER
DC to DC Converter (SI786,SI4808DY,T801)
30
V
5V SCL SDA CVBS SIF IF AGC
5V 3.3V 33V
Y/U/V (480P)
Y/U/V (480P) 0.5-0.7
Y/U/V 4:2:2
4:2:2
Y/U/V
Analog R/G/B/H/V
Dual Audio AMP LA4282
L-SPK R-SPK
R/G/B/FB TEXT
H/V (2H)
CLK
5
V
3.3V
3.3
V
9V
3.3
V
3.3
V
5V(FOR RESET IC 3,3V)
3.3
V
3.3
V
8.0
V
15
V
H-sync
H-Sync. SEP
3.3
V
5.0
V
SCART(R/G/B/FB)
DVD-U/V in
AV2 in(CVBS)
S-VHS(VIN1 : Y/C))
M/O(CVBS)
RF(VIN3 : CVBS)
SCL1/SDA1
R/G/B 24
RESET 4.2V
SCL/SDA
SCL/SDA
SCL/SDA
SCL/SDA
SCL /SD A
SCL /S DA
20.25
MHz
DC to AC INVEERTER
BRI-ADJ
TO MICOM
POWER-ON/OFF
TO MICOM
15
V
15
V
480
I/P
Detect
R / G / B
8 /8 /8bit
L
C
2 0 1
V
1
-
A
3
LCD PANNEL
IC3
SWITCHING CXA2040AQ
V-OUT
RF-IN
DVD-Y in(SCART-Vin)
M/O(CVBS)
TV/OUT(CVBS)
12V REG.