Read LG 52LG72-UA (CHASSIS:LA86B) Service Manual online
- 19 -
C
2008
Audio L/R
Flash
(1
6MB)
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
74LVC14APW
TEA6420D
(Audio SW)
MC
33078
(AMP)
C
S
5340
(A/D)
MTV416
(Micom)
NTP
3
0
0
0
(D-AMP)
X200
X-tal(54
)
PI
3HDMI
3
4
1
ATR
(3x1,S/W
)
EEPROM
A
T
/NT Tune
r
64Bit I/F
R
eset
CVBS
CVBS/Y/C
Y/Cb/Cr
R/G/B
H/V Sy
nc
Audio L/R
I2S
MNT out
(L/R)
SPDIF
OUT
I2S
Dual LVDS
Connector (FHD)
Full H
D
(1080
P)
RS-232
C
Dead IC
w
h
e
n
Standby
A
li
v
e IC
w
h
en
Standby
Video
Fro
nt
End
Du
al
HDMI
Rx
HD/SD
Video
Encoder
Aud
io
DSP
BCM3552(HD)
BCM3553(FHD)
MCLK
MCLK
HDMI CEC
HDMI CEC(To
M
ico
m)
To Micom
SDA
SCL
SIF
IF(AT)
Buffer
Digital out
Single LVDS
Connector(HD)
Digital out
W
X
GA
(768P)
IR & Local
KEY
Buffer
Buffer
24
C16
AGC CTL (F
ro
m BCM)
USB2.
0
I2S Audio Input
VSB/
QAM/NTSC/S
IF
AV
1
AV
2
COMP
1
COMP
2
CVBS
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
DDR(
3
2
MB)
(4x16x
4
)
DDR (1
2
8
MB)
RGB
Y/Cb/Cr
HDMI1
HDMI2
HDMI3
AV
1
AV
2
COMP
1
COMP
2
RGB
C
o
axia
l
OUT (L
G
5
0)
USB
LG30: HD
LG50: FHD
X400
X-tal(24
)
NVRAM
24
C512
EE
PRO
M
EE
PRO
M
EE
PRO
M
TROUBLESHOOTING & BLOCK DIAGRAM
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