47LD750, 47LD750N, 47LD751, 47LD780, 47LD790 (CHASSIS:LD03B) - LG TV Service Manual (repair manual). Page 23

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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.
2009.06.18
EUROBBTV
SC_RE1
2SC3052
Q4107
EU
Q4104
ISA1530AC1
EU
E
B
C
R4127
15K
EU
SCART1_Lout_N
DTV/MNT_R_OUT
R4133
390
EU
D4101
30V
OPT
C4120
0.1uF
16V
EU
+3.3V_NORMAL
R4160
0
EU
R4130
3.9K
EU
R4149
33K
EU
R4132
390
EU
R4152
4.7K
EU
D4112
30V
EU
Q4110
2SC3052
EU
E
B
C
R4154
1K
EU
SCART1_Rout_P
SCART1_MUTE
SC_RE2
C4123
10uF
16V
EU
D4103
30V
OPT
SC1_G
Q4105
2SC3052
EU
E
B
C
D4107
5.6V
OPT
R4137
15K
EU
D4106
30V
OPT
SC1_B
R4143
5.6K
EU
SCART1_Rout_N
DTV/MNT_R_OUT
041:F3;041:G2
R4139
68K
OPT
Q4111
2SC3052
EU
E
B
C
R4159
12K
EU
D4110
30V
OPT
SC1_R_IN
002:C6
C4114
100uF
16V
EU
R4157
0
EU
+12V
R4136
47K
EU
Q4109
RT1P141C-T112
EU
1
2
3
R4148
5.6K
EU
D4109
5.6V
OPT
SC1_CVBS_IN
DTV/MNT_L_OUT
D4100
5.6V
OPT
R4156
10K
EU
SCART1_Lout_P
D4108
5.6V
OPT
R4153
2K
1/16W
EU
C4127
33pF
EU
C4130
0.1uF
EU
SC1_R
R4150
33K
EU
L4105
EU
R4147
5.6K
EU
+12V
C4128
33pF
EU
REC_8
R4144
5.6K
EU
DTV/MNT_L_OUT
041:F4;041:G2
Q4108
2SC3052
EU
E
B
C
REC_8
R4135
470
EU
+12V
D4102
5.6V
OPT
R4151
2K
1/16W
EU
D4111
30V
OPT
DTV/MNT_R_OUT
D4105
5.6V
OPT
R4138
0
EU
DTV/MNT_L_OUT
C4124
10uF
16V
EU
R4128
0
EU
C4117
47uF
16V
EU
SC1_L_IN
2SC3052
Q4106
EU
+12V
JK4100
PSC008-01
EU
1
AUDIO_R_OUT
2
AUDIO_R_IN
3
AUDIO_L_OUT
4
AUDIO_GND
5
B_GND
6
AUDIO_L_IN
7
B_OUT
8
ID
9
G_GND
10
D2B_IN
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
22
AV_DET
SC1_ID
SC1_FB
R4155
1K
EU
D4104
30V
OPT
C4107
4700pF
50V
EU
C4108
4700pF
50V
EU
L4100
BLM18PG121SN1D
EU
L4101
BLM18PG121SN1D
EU
C4100
1000pF
50V
EU
C4101
1000pF
50V
EU
C4113
47pF
50V
EU
IC4100
LM324D
3
3
2
2
4
4
1
1
6
6
5
5
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
DTV/MNT_V_OUT
SCART1_DET
JK4101
PPJ-230-01
CN
9
[GN]G
10
[GN]GND
8
[GN]C_DET
7
[BL]B
6
[RD]R
5
[WH]L_IN
4
[RD]R_IN
11
FIX-TER
13
[RD]MONO
R6166
0
CN
C4125
6800pF
50V
EU
C4126
6800pF
50V
EU
R4126
10K
R4129
1K
0
R4123
EU
R4112
75
EU
R4104
75
1%
R4102
75
1%
R4101
75
1%
R4100
470K
R4103
470K
R4107
0
1/16W
5%
EU
R4105
0
1/16W
5%
EU
R4108
0
R4122
22
EU
R4111
75
1%
EU
C4115
220pF
50V
OPT
C4116
0.1uF
16V
C4119
0.1uF
16V
EU
C4118
0.1uF
16V
EU
R4131
0
OPT
R4145
1K
EU
R4146
1K
EU
ATV_OUT
IC4101
NLASB3157DFT2G
EU
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
DTV_ATV_SELECT
R4163
10K
EU
+5V_NORMAL
R4134
180
EU
12
R4164
EU
R4115
62
EU
C4134
0.1uF
16V
EU
C4105
1uF
25V
R4116
0
C4112
100pF
50V
C4111
100pF
50V
R4113
0
C4104
1uF
25V
R4168
0
EU
C4138
1uF
10V
C4137
1uF
10V
Q4117
2SC3052
E
B
C
SIDE_HP_MUTE
R4171
OPT
R4169
OPT
C4139
1uF
10V
R4174
0
OPT
C4141
2.2uF
10V
C4144
2.2uF
10V
C4140
10uF
10V
+3.3V_NORMAL
R4170
4.7K
R4109
4.7K
L4104
BG2012B080TF
C4136
1uF
10V
R4175
1K
C4142
0.1uF
16V
R4172
OPT
100K
IC4102
TPA6132A2
EAN60724701
3
INR+
2
INL+
4
INR-
1
INL-
5
OUTR
6
G0
7
G1
8
HPVSS
9
CPN
10
PGND
11
CPP
12
HPVDD
13
EN
14
VDD
15
SGND
16
OUTL
R300
4.7K
L4102
10uH
+3.3V_NORMAL
C4135
1uF
10V
C4143
2.2uF
10V
L4103
BG2012B080TF
HP_ROUT
HP_LOUT
HP_LOUT_P
HP_LOUT_N
HP_ROUT_P
HP_ROUT_N
R4176
10K EU
R4177
10K EU
R4178
75
1%
C4121
33pF
OPT
R4173
0
1/16W
R4119
0
1/16W
C4145
0.22uF
16V
C4146
0.22uF
16V
C4122
33pF
OPT
R4140
68K
OPT
R4141
68K
OPT
R4142
68K
OPT
41
ETC SUB BOARD I/F
[SCART2 PIN 8]
Gain=1+Rf/Rg
Rg
Rf
EU_SCART [OPT]
Audio Out Amp
EU_SCART [OPT]
For Frequency Response
Selece = High ==> A = B1
Selece = Low  ==> A = B0
EARPHONE BLOCK
Close to the IC
EARPHONE AMP
Display
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