LG 42LV375H Service Manual page 37

D4107
5.6V
OPT
D4101
30V
OPT
D4106
30V
D4102
OPT
5.6V
OPT
D4103
30V
OPT
R4168
0
D4109
5.6V
OPT
D4108
5.6V
D4105
5.6V
OPT
D4100
5.6V
OPT
EARPHONE BLOCK
EARPHONE AMP
C4135
1uF
10V
HP_LOUT_N
C4136
1uF
10V
HP_LOUT_P
C4137
1uF
10V
HP_ROUT_N
C4138
1uF
10V
HP_ROUT_P
R4106
4.7K
R4169
OPT
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.
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+3.3V_NORMAL
R4126
10K
R4129
1K
C4116
0 . 1 u F
16V
R4123
R4164
12 0
C4115
220pF
R4115
50V
62
OPT
R4112
75
R e v ( 4 )
C4114
R207
100uF
68=>75
16V
R4122
22
SC1_R
R4111
R4104
75
75
1%
R4108
0
SC1_G
R4101
75
1%
OPT
D4111
SC1_B
30V
D4110
R4102
30V
75
OPT 1%
C4105
1uF R4116
25V
0
SC1_L_IN
C4112
R4103
100pF
470K
50V
C4104
1uF
R4113
25V
0
SC1_R_IN
C4111
R4100
100pF
470K
OPT 50V
R4105
0
DTV/MNT_L_OUT
1/16W
5%
R4107
0
DTV/MNT_R_OUT
1/16W
5%
F o r F r e q u e n c y R e s p o n s e
+3.3V_NORMAL
L4102
10uH
C4140 C4142
0 . 1 u F
10uF
16V
10V
R4119
0
1/16W
C4139
C l o s e t o t h e I C
1uF
10V
R4172
C4143 100K
2 . 2 u F
16 15 14 13 OPT
10V
INL- HPVDD
1 12
INL+ CPP
2 11
Q4117
IC4102 C4144 2SC3052
TPA6132A2 2 . 2 u F
INR+ PGND
10V
3 10
INR- CPN
4 EAN60724701 9
5 6 7 8
R4170
4.7K
R4173
0
R4171
OPT
1/16W
C4141
2 . 2 u F
10V
SCART1_DET
ISA1530AC1
SC1_CVBS_IN
R4127
15K
R4130
3.9K
L4104
BG2012B080TF
HP_LOUT
C4146
0 . 2 2 u F
16V
+3.3V_NORMAL
R4109
OPT
4.7K
R4174
0
C
R4175
1K
B
SIDE_HP_MUTE
E
L4103
BG2012B080TF
HP_ROUT
C4145
0 . 2 2 u F
16V
+5V_NORMAL
+12V
C4134 R4163
0 . 1 u F
10K
16V
L4105
E C4119
R4135 C4118
0 . 1 u F
470 0 . 1 u F
Q4104
16V 16V
B
C R4136
Q4105
47K
2SC3052
C
R4133
C4117
390
B 47uF
16V
R4132 E
390
R4138
0
Rf
R4134 R4137
Gain=1+Rf/Rg
Rg
180 15K
R4131
0
OPT
Audio Out Amp
EU_SCART [OPT]
R4146
1K
DTV/MNT_L_OUT
C4126
C4123
6800pF
10uF
50V
16V
+12V
OPT
R4141
68K
OPT
C4122
R4142 R4148
33pF
68K 5.6K
SCART1_Lout_N
OPT
R4147
5.6K
SCART1_Lout_P
C4120 R4143
5.6K
0 . 1 u F
SCART1_Rout_P
50V
+12V
OPT SCART1_Rout_N
R4139 R4144
68K 5.6K
C4121 R4140
33pF 68K
OPT OPT
R4145
1K
DTV/MNT_R_OUT
C4124
C4125
10uF
6800pF
16V
50V
DTV/MNT_L_OUT
R4151
Q4106
2SC3052
2K
1/16W
DTV/MNT_R_OUT
R4153
Q4107
2K
2SC3052
1/16W
DTV_ATV_SELECT
IC4101
NLASB3157DFT2G
SELECT B1
6 1
ATV_OUT
VCC GND
5 2
A B0
4 3
DTV/MNT_V_OUT
R4178
75
S e l e c e = H i g h = = > A = B 1
S e l e c e = L o w = = > A = B 0
R4149
20K
C4127
33pF
IC4100
LM324D
R4176
10K
OUT1 OUT4
1 14
I N 1 - I N 4 -
2 13
IN1+ IN4+
3 12
VCC VEE/GND
4 11
IN2+ IN3+
5 10
I N 2 - I N 3 -
6 9
R4177
10K
OUT2 OUT3
7 8
R4150
20K
C4128
33pF
RT1P141C-T112
Q4109
SCART1_MUTE
3 1
C4130
2
0 . 1 u F
Chameleon(EU_GP2_BCM3556)
xxLV375H-ZA 2 0 1 0 . 1 2 . 2 0
41
SCART&HP
LGE Internal Use Only