LG 47LX9550-CA (CHASSIS:LC03M) Service Manual ▷ View online
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6. Audio
Measurement condition:
1. RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
2. CVBS, Component: 1 KHz sine wave signal 0.4 Vrms
3. RGB PC: 1 KHz sine wave signal 0.7 Vrms
1. RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
2. CVBS, Component: 1 KHz sine wave signal 0.4 Vrms
3. RGB PC: 1 KHz sine wave signal 0.7 Vrms
7. USB S/W download
(option, service only)
1) Put the USB Stick to the USB socket
2) Automatically detecting update file in USB Stick
1) Put the USB Stick to the USB socket
2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low,
it didn’t work. But your downloaded version is High, USB
data is automatically detecting
data is automatically detecting
3) Show the message “Copying files from memory”
4) Updating is starting.
5) Updating Completed, The TV will restart automatically
6) If your TV is turned on, check your updated version and
6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL OPTION again.
1) Push "IN-START" key in service remote control.
2) Select "Tool Option 1" and Push “OK” button.
3) Punch in the number. (Each model has their number.)
2) Select "Tool Option 1" and Push “OK” button.
3) Punch in the number. (Each model has their number.)
No.
Item
Min. Typ. Max. Unit
1. Audio practical max
9.0
10.0 12.0
W
EQ Off
Output, L/R
AVL Off
(Distortion=10 %
8.5
8.9
9.8
Vrms Clear Voice Off
max Output)
2. Speaker
(8
Ω
10.0 15.0
W
EQ
On
Impedance)
AVL On
Clear Voice On
LGE
3556C
P
(IC100
)
Comp1
_JK10
0
Comp2
_JK300
0
AV
1
_JK
10
1
4
: CVBS,
DET
A
V_L/R_IN
9
: Y,
Pb
, Pr,
COMP1_DET
, COMP1
_ L/
R_IN
9
: Y,
Pb,
Pr,
COMP2_DET,
COMP2_
L/R_IN
4:
CVBS,
DET
SIDEA
V_L/R_IN
Sid
e
A
V
(G
end
er)
JK8
60
0
RGB
Audio_
JK84
01
2
: PC_
L
/R_
IN
Digital
Audio
(O
pt
ic
)_
JK
84
00
1
: SPDIF
_OUT
RS-232C
:
Ctrl&
SVC
2
: DB
G
_R
X/T
X
MICOM
2
:NEC_RXD
/T
XD
DDR3
(1
G
,
IC40
1
)
35
:
DDR2_D
[0
:1
5
],…
DDR3
(1
G,
IC40
0
)
35
: DDR2_D[0:15],
…
BCM
3
D
TV
Aud
io
A
M
P
(NTP700
0,
IC880
1)
4
: I2
S,
MC
LK
, …
2
: SDA1/SCL1
_3.3V
Audio
HDMI
Switch
TDA1999
7
IC830
0
10
: HDMI_SD
A
/SCL(+5V_
NORM
A
L)
HDMI_CLK-/CLK+,D
AT
A
…
2
: SC
L2_3.3V(
+5V_NOR
M
A
L)
HDMI_3 JK8
30
0
HDMI_2 JK8
30
1
HDMI_1 JK8
30
2
HDMI_4_Sid
e
JK8
30
3
10
: DDC_
SD
A
1/SC
L1
CLK1,
D
A
TA
1…
10
: DDC_
SD
A
2/SC
L2
CLK2,
D
A
TA
2…
10
: DDC_
SD
A
3/SC
L3
CLK3,
D
A
TA
3…
10
: DDC_
SD
A
4/SC
L4
CLK4,
D
A
TA
4…
4:
SIDE_COMP_Y,
Pb,
Pr,
D
ET
Side
Comp
(Ge
nde
r)
_JK860
1
6
: EPHY_TDP/TDN,
EPHY_RDP/
RDN,
EPHY_LINK,
EPHY_
AC
TIVITY
RG
B
JK8402
1
: EDID_
W
P
6:
DSUB_B/R/G,
DET,
RGB_DDC_SCL/SDA
2
: R
G
B_DDC_
SCL/SD
A
EEPR
OM
2K
,
IC8401
74F08D
IC840
0
2
:R
G
B_H
SY
NC
/VSYNC
Sp
eak
er
MI
C2009Y
M
6
IC2202/
3
USB
Switch
USB2512
A
IC220
1
U
SB
po
w
er
+5
V
u
sb
2:U
SB
_D
M1
/D
P1
2:USB_DM2/DP
2
2:
Si
de_U
SB
_D
M/
D
P
USB1 (Side)
USB2 (Side)
2:USB_CT
L2
/USB_O
CD1/2
DDR3
(1
G,
IC402
)
DDR3
(1
G
,
IC40
3
)
35
: DDR2_D[0:15],
…
35
: DDR2_D[0:15],
…
NVRAM
IC10
2
Address
:
A8’h
35
: DDR2_D[0:15],
…
LAN_
JK
82
00
MAX3232CDR
IC820
0
- 14 -
BLCOK DIAGRAM
LGE3556CP
(IC100
)
TU270
1
(T
DF
R_C155
D
)
Vertical
1
: RF
_SWIT
C
H_
C
TL
1
: BOSTER_CT
L
2
: +SCL0/SDA0_3.3V
( +3.3v
normal
pull
up)
1
: TU_SIF
+5v
TU
1
: TU_CVBS
+5v
TU
1
:TUNER_RESET
+3
.3V
T
U
SIF
V
ide
o
CI
Slot
P4500(1006
79
72-
00
0L
F)
11:CI_OUTCLK,
CI_OUTDATA[0-7],
CI_OUTSTART,
CI_OUTVALID
15:CI_A[0-13]
…
BCM
3DTV
Powe
r Suppl
y
Voltage
fo
r T
une
r :
+5V_
TU/+3
.3
V_
TU
/+2
.5V_
TU/+1
.2
V_
TU
2
: +SCL2/SDA2_3.3V
(+3.3v
normal
pull
up)
4:
TS_SYNC
, VAL_
ERR,
TS_DATA_CLK/
FE_
TS_SERIAL
FE_TS_SYNC/VAL_
ERR/DATA_CLK
Serial
8:FE_TS_DATA[
0-3]
Pa
ra
llel
AR451
9
AR450
5
AR451
6
8:FE_TS_DATA[
4-7]
6:
/CI
_C
E1/
C
E2
…
2:/EBI_CS/RW
8:/NAND_DATA[0-7]
NAND
FLASH
(4
Gbit
, 512
M
b
IC
101
)
3:/NA
ND
_RBb/CE
b/CL
E
6:/CI_SEL,EBI_CS,NAND_ WEb,EBI_WE,
NAND_REb,
NAND_ALE
MODEL_
OPT
LG5111
IC9701
LVDS_T
X_0_DAT
A[
0-4]
LVDS
_T
X
_0
_C
LK
LVDS_T
X_1_DAT
A[
0-4]
LVDS
_T
X
_1
_C
LK
P7901
(O
nly
55
’)
M
2/
M
3_
M
OS
I/SC
LK
IC970
3
EEPROM
M_SCL_SD
A
EEP
R
OM
_A1/
WP
SDA3
/SC
L3_
3.
3V
P680
0
3D_D
IM
/V-
SYNC
RPXA[
+/-0
-4
],RPXACK[
+/-0
-4
]
RPXB[+/-0-4],RPX
BCK
[+/-0-4]
IC810
1
NEC
MICO
M
Audio
A
M
P
N
TP7000
,
IC8801
SYS_RESET
POWER_DET
AMP_RESET_N
AMP_MUTE
EEPR
OM
IC8100
2
: N
EC_
EE
PR
O
M
_SDA
/S
C
L
_3
.3
V
2
: SDA1/SCL1
_3
.3
V
IR&KEY
P8200
M
C
74
LCX541D
TR
2G
IC450
0
CI_CTL_BUFFER
74LVC2
45A
IC450
1
CI_DATA
_B
U
FF
ER
KEY1
/KEY2
/IR/LED_
R
/LED_
B
Debu
g
P8100
NEC_ISP_RxD/TxD/FLMD0/OCD1A
HDMI_
JK8
30
0
/1/2/3
CEC_REMOTE
DC/DC
IC
IC8002
POWER_ON/OFF1
POWER_ON/OFF2_1
DC/DC
IC
IC8000
&
IC8001
DC/DC
IC
IC8003
&
IC8005
&
IC2701
POWER_ON/OFF2_2
24P
Po
w
er
P8000
INV_CTL/RL_ON
INV_CTL/RL_ON
M
A
X232
IC8200
RS23
2
JK8201
NAND
Flash
IC10
1
8
: NAND_DATA[
0-7]
6:NAND_RBb/REb/CEb/CLE/ALE/WEb
FLASH_WP
8:/CI_D[0-7]
- 15 -
200
541
810
530
540
521
400
820
120
880
122
510
570
320
LV2
LV1
800
900
910
710
500
501
A2
A9
A23
A10
310
: Module +T
-con B/D
300
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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