LG 37LD840 (CHASSIS:LJ03B) Service Manual ▷ View online
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THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2009.06.18
EUROBBTV
DSUB_R
JK8401
PEJ027-01
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
D8407
5.6V
AMOTECH
RGB_DDC_SDA
+3.3V_NORMAL
D8409
ENKMC2838-T112
A1
C
A2
EDID_WP
RGB_HSYNC
C8409
100pF
100pF
50V
IC8401
M24C02-RMN6T
RGB_EDID_ST
0IMMR00014A
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
R8412
470K
470K
RGB_DDC_SCL
D8406
5.6V
AMOTECH
+5V_NORMAL
RGB_VSYNC
R8418
0
0
PC_R_IN
IC8400
74F08D
74F08D
3
Q0
2
D0B
4
D1A
1
D0A
6
Q1
5
D1B
7
GND
8
Q2
9
D2A
10
D2B
11
Q3
12
D3A
13
D3B
14
VCC
JK8402
SPG09-DB-010
1
R
E
D
2
G
R
E
E
N
3
B
L
U
E
4
G
N
D
_
1
5
D
D
C
_
G
N
D
6
R
E
D
_
G
N
D
7
G
R
E
E
N
_
G
N
D
8
B
L
U
E
_
G
N
D
9
N
C
1
0
S
Y
N
C
_
G
N
D
1
1
G
N
D
_
2
1
2
D
D
C
_
D
A
T
A
1
3
H
_
S
Y
N
C
1
4
V
_
S
Y
N
C
1
5
D
D
C
_
C
L
O
C
K
1
6
S
H
I
L
E
D
R8401
22
DSUB_B
PC_L_IN
+5V_NORMAL
R8414
2.7K
R8411
470K
470K
R8419
0
0
DSUB_G
R8402
22
DSUB_DET
R
8
4
1
3
2
.
7
K
R8423
0
OPT
R8425
1K
R8424
10K
10K
R8421
0
R8417
0
C8402
22pF
50V
OPT
C8403
22pF
50V
OPT
R8405
22
R8406
22
C8401
0.1uF
0.1uF
C8404
0.1uF 16V
C8405
18pF
50V
C8406
18pF
50V
R8416
22
R8415
22
R8422
100
R8420
10K
D8401
30V
ADUC30S03010L_AMODIODE
D8403
30V
ADUC30S03010L_AMODIODE
D8402
30V
D8404
30V
D8405
30V
D8408
5.6V
CDS3C05HDMI1
OPT
D8410
5.6V
CDS3C05HDMI1
OPT
D8411
5.6V
5.6V
ADMC5M03200L_AMODIODE
OPT
R8407
75
75
R8404
75
75
R8403
75
75
C8407
1uF
25V
C8408
1uF
25V
JP8401
+3.3V_NORMAL
JP8402
JK8400
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
JP8400
D8400
30V
30V
OPT
SPDIF_OUT
C8400
0.1uF
0.1uF
16V
R8400
1K
IC8401-*1
R1EX24002ASAS0A
RGB_EDID_RENESAS
DEV
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
L8408 60-ohm
RGB_BEAD
L8410 60-ohm
RGB_BEAD
L8409 60-ohm
RGB_BEAD
L8408-*1
0
0
RGB_0OHM
L8409-*1
0
0
RGB_0OHM
L8410-*1
0
0
RGB_0OHM
9
ETC SUB BOARD I/F
RGB AUDIO IN
RGB PC
RGB IN
BCM Reference
BCM Reference
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SIDE_AV
R8500
470K
SIDE_AV
D8502
5.6V
SIDE_AV
C8504
100pF
SIDE_AV
+3.3V_NORMAL
D8500
5.6V
SIDE_AV
R8505
0
SIDE_AV
R8501
470K
470K
SIDE_AV
R8504
1K
SIDE_AV
JK8500
PPJ235-01
SIDE_AV
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]O-SPRING
3C
[RD]CONTACT
4C
[RD]O-SPRING
5C
[RD]E-LUG
D8501
5.6V
SIDE_AV
R8502
2.7K
SIDE_AV
C8503
47pF
50V
SIDE_AV
C8502
1uF
25V
SIDE_AV
C8501
1uF
25V
SIDE_AV
C8505
100pF
SIDE_AV
C8500
100pF
50V
SIDE_AV
R8506
0
SIDE_AV
R8503
0
SIDE_AV
SIDE_AV_R_IN
SIDE_AV_DET
SIDE_AV_CVBS
SIDE_AV_L_IN
D8505
5.1V
SIDE_AV
D8053
5.1V
5.1V
SIDE_AV
(New Item Developmen H:9.2mm)
SIDE_AV
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
WIRELESS
BCM_RXD1
R8705
2.2K
2.2K
C8702
0.01uF
50V
+3.5V_ST
JK8700
KJA-PH-3-0168
14
GND_3
13
I2C_SDA
5
VCC[24V/20V/17V]_5
12
I2C_SCL
11
GND_2
2
VCC[24V/20V/17V]_2
19
GND_5
18
IR
10
RESET
4
VCC[24V/20V/17V]_4
1
VCC[24V/20V/17V]_1
17
GND_4
9
GND_1
8
INTERRUPT
3
VCC[24V/20V/17V]_3
16
UART_TX
7
DETECT
6
VCC[24V/20V/17V]_6
15
UART_RX
20
GND_6
21
SHIELD
TP8700
+24V
R8700
0
NON_3DTV
C8701
2.2uF
R8711
4.7K
OPT
C8703
0.1uF
R8713
1K
IC8700
MC14053BDR2G
WIRELESS
3
Z1
2
Y0
4
Z
1
Y1
6
INH
5
Z0
7
VEE
8
VSS
9
C
10
B
11
A
12
X0
13
X1
14
X
15
Y
16
VDD
R8704
22K
22K
R8712
47K
OPT
R8706
0 NON_WIRELESS
0 NON_WIRELESS
R8708
0
NON_3DTV
C8700
0.1uF
50V
0.1uF
50V
WIRELESS_TX
WIRELESS_SCL
R8714
10K
TP8701
R8707
0
WIRELESS
WIRELESS_DL_RX
+3.3V_NORMAL
+3.5V_ST
IR_PASS
R8701
0
WIRELESS
WIRELESS_DETECT
R8702
10K
10K
WIRELESS_RX
R8703
0
NON_WIRELESS
WIRELESS_PWR_EN
Q8700
E
B
C
WIRELESS_SW_CTRL
BCM_RX
BCM_TX
Q8701
AO3407A
G
D
S
WIRELESS_RX
WIRELESS_TX
BCM_TXD1
WIRELESS_DL_TX
WIRELESS_SDA
C8704
10uF
35V
10uF
35V
C8705
10uF
35V
10uF
35V
L8700
MLB-201209-0120P-N2
RS232C & Wireless
LOW
WIRELESS_SW_CTRL
Wireless power
WIRELESS Dongle connect --> WIRELESS RS232
HIGH
SELECT PIN
WIRELESS Dongle Dis_con --> S7 RS232
X0/Y0/Z0
X1/Y1/Z1
WIRELESS READY MODEL
STATUS
12
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2009.06.18
NTP7000
BCM (EUROBBTV)
+1.8V_AMP
0.1uF
C8820
50V
IC8800
AP1117E18G-13
2
OUT
3
IN
1
ADJ/GND
C8810
1000pF
50V
C8840
0.47uF
50V
R8803
100
C8808
1000pF
50V
R8822
4.7K
+1.8V_AMP
C8800
0.1uF
16V
0.1uF
16V
+1.8V_AMP
Q8800
2SC3052
E
B
C
R8819
12
R8821
4.7K
R8809
3.3
3.3
EMI
C8826
10uF
35V
10uF
35V
R8811
10K
R8814
12
C8802
10uF
10V
10uF
10V
C8837
390pF
50V
L8801
BLM18PG121SN1D
C8806
100pF
50V
0.1uF
C8824
50V
AUD_LRCK
C8805
10uF
10V
OPT
AUD_LRCH
C8830
22000pF
50V
R8815
12
SCL1_3.3V
0.1uF
C8818
16V
D8802
100V
1N4148W
OPT
R8826
0
0
AUD_SCK
C8825
1uF
25V
0.1uF
C8807
16V
AMP_MUTE
C8832
0.01uF
50V
0.01uF
50V
EMI
SPK_L+
0.1uF
C8842
50V
AMP_RESET_N
0.1uF
C8831
50V
SPK_L-
R8818
12
D8801
100V
1N4148W
OPT
C8809
33pF
50V
33pF
50V
SPK_R+
R8806
3.3K
C8803
0.1uF
16V
0.1uF
16V
+3.3V_NORMAL
SPK_R-
C8823
22000pF
50V
R8812
12
+1.8V_AMP
SPK_L+
C8829
22000pF
50V
C8812
33pF
50V
33pF
50V
P8800
WAFER-ANGLE
1
2
3
4
AUD_MASTER_CLK
C8839
0.47uF
50V
R8800
1
R8827
0
0
L8802
BLM18PG121SN1D
+24V_AMP
SPK_R+
+3.5V_ST
C8838
390pF
50V
R8823
4.7K
L8800
BLM18PG121SN1D
R8805
100
D8803
100V
1N4148W
OPT
C8815
10uF
10uF
10V
OPT
0.1uF
C8843
50V
0.1uF
C8844
50V
+3.3V_NORMAL
R8808
100
R8801
100
POWER_DET
R8813
12
R8816
12
C8801
10uF
10V
OPT
0.1uF
C8833
50V
R8817
12
C8835
390pF
50V
R8807
0
0
OPT
0.1uF
C8841
50V
R8824
0
0
R8802
100
SDA1_3.3V
R8804
100
C8804
0.1uF
16V
D8800
100V
1N4148W
OPT
R8810
10K
C8821
1000pF
50V
1000pF
50V
C8828
1uF
25V
C8834
10uF
35V
10uF
35V
0.1uF
C8811
C8816
1uF
25V
+24V_AMP
C8822
1uF
25V
R8820
4.7K
C8819
22000pF
50V
SPK_R-
R8825
0
0
SPK_L-
C8836
390pF
50V
IC8801
NTP-7000
EAN60969601
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
DGND_1
6
GND_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LF
12
AVDD_PLL
13
DVDD_PLL
14
GND
15
DGND_2
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
MONITOR0
23
MONITOR1
24
MONITOR2
25
/FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
57
EP_PAD
+24V
L8803
MLB-201209-0120P-N2
+24V_AMP
0.1uF
C8827
50V
L8805
AD-9060
15uH
2S
1S
1F
2F
L8804
AD-9060
15uH
2S
1S
1F
2F
C8813
47pF
50V
47pF
50V
EMI
C8814
47pF
50V
47pF
50V
EMI
C8817
47pF
50V
47pF
50V
EMI
38
KIM JONG HYUN
120 mA
SPEAKER_L
SPEAKER_R
Vd=1.4V
CCFL = 20V
Edge_LED 32~47 Inch = 20V
55 Inch & IOP Module = 24V
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