DOWNLOAD LG 52LG50FD-SA (CHASSIS:LJ82B) Service Manual ↓ Size: 5.28 MB | Pages: 62 in PDF or view online for FREE

Model
52LG50FD-SA (CHASSIS:LJ82B)
Pages
62
Size
5.28 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
52lg50fd-sa-chassis-lj82b.pdf
Date
PREV: LG 52LG50DC-UA (CHASSIS:LA84Z) Service Manual

LG 52LG50FD-SA (CHASSIS:LJ82B) Service Manual ▷ View online

C
2008
- 25 -
Flash
(32MB)
DDR1(128MB)
(16Mx16x4)
DDR1(128MB)
(16Mx16x4)
TEA6420
Audio 
SW
MT
V416
(Micom)
NTP3000
(Digital AMP)
64Bit I/F
RGB-
P
C
HDM
I
1/2
/3
COMP 1
COMP 2
AV1
AV2
RGB-
P
C
I2S
MCLK
Digital out
COMP1
COMP2
AV1
AV2
B
C
M
7412
(MPEG4 
D
eco
de
r)
Analog 
/Digital 
Tuner
TC
9051
2
DVI
I2S
SIF
SPDIF Out
CVB
S
CVBS/Y/C
Y/Cb/Cr
R/G/B 
DDR1
(64MB)
CS5340
L/
R
Se
ria
l TP
20b
its
12b
it YC
 4
:2:2
NIM TUNER
TMDS_
RX+-
EPM240F
MNT out (Audio Only
)
T
M
D
S
341
A
(3x1
,S
/W
)
CVBS/Y/C
MC33078
(A
M
P
)
L/
R
R
S
232
RX/TX
DVI
4:
2:2 20bit YC
Full H
D
(1080
P)
WXGA(
7
6
8
P
)
RF
Sw
it
c
h
DM1/DP
1
Se
ria
l
TP
74HC
04
SPDIF Out
(Co
axi
al)
Video 
Fro
nt
 
End
Du
al
HDMI
Rx
HD/SD
Video
Encoder
Aud
io
DSP
USB2.0
PKT
HSX
PCI/
EBI
HD-DVI
IB
0
Pa
rs
e2
RSBUF
XCBUF
RMX0
BCM3553
Local KEY
24
C16
74LV
C
14AP
W
X-tal(54M)
R
eset
K
IA7029
NVRAM
I2C
Digital TV V
ideo
C
2008
- 26 -
Check RF Cable
Check TP Clock, Data, Sync
R925 (38.1MHz), R804, R803
Maybe Tuner(TU800) has problems
Check BCM3553 Output TP Clock, 
Data, Sync
R153, R155, R152
Check BCM7412 Clock, Hsync, 
Vsync
R1088 (Typ. 74.25MHz), R1087, 
R1086
Y
Y
N
Check Tuner 5V Power
IC810 #3 Pin
Replace IC810
Y
N
Y
Maybe BCM3553(IC100) has 
problems
N
Maybe BCM7412(IC1000) has 
problems
N
Check PLD Clock, Hsync, Vsync
R1102 (Typ. 74.25MHz), R1100, 
R1101
Y
Redownload PLD file or replace
N
Maybe BCM3553(IC100) has 
problems
Y
Check D805 color
Bad Tuner. Replace Tuner.
None
red
Check BCM7412 Input Clock
R107 (27MHz)
Replace it
N
Y
Digital TV Video
C
2008
- 27 -
Flash
(32MB)
DDR1(128MB)
(16Mx16x4)
DDR1(128MB)
(16Mx16x4)
TEA6420
Audio 
SW
MT
V416
(Micom)
NTP3000
(Digital AMP)
64Bit I/F
RGB-
P
C
HDM
I
1/2
/3
COMP 1
COMP 2
AV1
AV2
RGB-
P
C
I2S
MCLK
Digital out
COMP1
COMP2
AV1
AV2
B
C
M
7412
(MPEG4 
D
eco
de
r)
Analog 
/Digital 
Tuner
TC
9051
2
DVI
I2S
SIF
SPDIF Out
CVB
S
CVBS/Y/C
Y/Cb/Cr
R/G/B 
DDR1
(64MB)
CS5340
L/
R
Se
ria
l TP
20b
its
12b
it YC
 4
:2:2
NIM TUNER
TMDS_
RX+-
EPM240F
MNT out (Audio Only
)
T
M
D
S
341
A
(3x1
,S
/W
)
CVBS/Y/C
MC33078
(A
M
P
)
L/
R
R
S
232
RX/TX
DVI
4:
2:2 20bit YC
Full H
D
(1080
P)
WXGA(
7
6
8
P
)
RF
Sw
it
c
h
DM1/DP
1
Se
ria
l
TP
74HC
04
SPDIF Out
(Co
axi
al)
Video 
Fro
nt
 
End
Du
al
HDMI
Rx
HD/SD
Video
Encoder
Aud
io
DSP
USB2.0
PKT
HSX
PCI/
EBI
HD-DVI
IB
0
Pa
rs
e2
RSBUF
XCBUF
RMX0
BCM3553
Local KEY
24
C16
74LV
C
14AP
W
X-tal(54M)
R
eset
K
IA7029
NVRAM
I2C
Analog TV V
ideo
C
2008
- 28 -
Check RF Cable
Check CVBS signal
TU800 #17 Pin
Maybe Tuner(TU800) has problems
Check CVBS signal
IC808 #8 Pin
Check CVBS signal
C658
Y
Y
N
Check Tuner 5V Power
IC810 #3 Pin
Replace it
Y
N
Y
Replace IC808 or check L800 5V 
power
N
Replace it
N
Y
Maybe BCM3553(IC100) has 
problems
Analog TV Video
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