LG 42LX6500 Service Manual page 31

FIX-TER
11 [GN]GND
10
[GN]G
9
[GN]C_DET
8
[BL]B
7
[RD]R
6
[WH]L_IN
5
[RD]R_IN
4
[RD]MONO
13
PPJ-230-01
JK4101
CN
[SCART2 PIN 8]
+12V
EU_SCART [OPT]
R4156
10K
R4157 R4160
EU
0 EU 0
B
R4152
4.7K EU
R4159
EU
EU 12K
C
EU
EU
B Q4110
SC_RE1
2SC3052
R4154
1K E
C
EU
EU
B Q4108
SC_RE2
2SC3052
R4155
1K
E
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 © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
D4107
5.6V
CN
D4101
30V
EU
OPT
R4164
12
AV_DET
22
COM_GND
21
SYNC_IN
20
SYNC_OUT
19
SYNC_GND2
D4106
18
30V
D4102
SYNC_GND1
17 5.6V OPT
RGB_IO OPT
16
R_OUT
15
RGB_GND D4103
EU
14
5.6V EU
R4104 270nH CN
R_GND CN 75
13 R4108-*1
R4168 0 1% CM2012FR27KT
D2B_OUT
12 EU
G_OUT
11
CN D4104 EU CN R4108 CN
D2B_IN R4101 C4147 0 EU C4148
10 D4113 5.1V
5.1V 75 27pF 27pF
CN
G_GND 1% 50V 50V
9
ID
8
B_OUT
7
EU
AUDIO_L_IN
6 D4110
R4102
5.6V 75
B_GND
5 CN 1%
AUDIO_GND
4
C4105
AUDIO_L_OUT
3
AUDIO_R_IN 1uF
2
R4103
D4109
AUDIO_R_OUT
470K
1 5.6V
CN
C4104
PSC008-01
JK4100
1uF
EU
D4108
R4100
5.6V
470K
CN
L4100
BLM18PG121SN1D R4105
0
EU
EU 1/16W EU
5%
C4100 C4107
D4105 EU 4700pF
1000pF
C 5.6V 50V
50V
EU
OPT
Q4111 EU
L4101
2SC3052
BLM18PG121SN1D R4107
0
E
1/16W
EU
5%
C4101 C4108
EU 1000pF EU 4700pF
D4100
50V 50V
5.6V
OPT
For Frequency Response
REC_8
EARPHONE BLOCK
EARPHONE AMP - Spec out
+3.3V_NORMAL
R4126
10K
SCART1_DET
R4129
1K
C4116
0.1uF
16V
EU
SC1_CVBS_IN
R4123
EU C4113 C4115
0
EU 220pF
R4115 47pF
50V
62 50V
OPT
EU
EU
R4112
75 C4114
100uF
16V
EU
SC1_FB
R4122
22
SC1_R
R4111
75
1%
EU
SC1_G
EU 30V
REC_8
R4128 D4112
0
SC1_ID
OPT
EU
D4111 EU
R4127
SC1_B
30V 15K R4130
3.9K
R4116
0
SC1_L_IN
C4112
100pF
50V
R4113
0
002:C6
SC1_R_IN
C4111
100pF
50V
DTV/MNT_L_OUT 041:F4;041:G2
DTV/MNT_R_OUT
041:F3;041:G2
+5V_NORMAL
+12V
EU
C4134
0.1uF
EU 16V
L4105
EU
EU EU
EU E C4119
C4118
ISA1530AC1 R4135
0.1uF
470 0.1uF
Q4104
16V
16V
B
EU
C EU
Q4105
EU R4136
2SC3052 47K
C EU
R4133
C4117
390 B
47uF
16V
E
EU EU
R4132 R4138
0
390
EU
Rf EU
R4137
Rg
R4134 15K
180
Gain=1+Rf/Rg
R4131
0
OPT
DTV/MNT_L_OUT
OPT OPT
+12V
R4141 R4142
68K 68K
C4122
OPT
33pF
SCART1_Lout_N
SCART1_Lout_P
C4120
EU 0.1uF
16V SCART1_Rout_P
SCART1_Rout_N
+12V
OPT OPT
R4139 R4140
68K 68K
DTV/MNT_R_OUT
C4121
OPT
33pF
DTV/MNT_L_OUT
Q4106
2SC3052
DTV/MNT_R_OUT
Q4107
2SC3052
ETC SUB BOARD I/F
EU
R4163
10K
DTV_ATV_SELECT
IC4101
NLASB3157DFT2G
SELECT B1
6 1
ATV_OUT
EU
VCC GND
5 2
A B0
4 3
DTV/MNT_V_OUT
Selece = High ==> A = B1
Selece = Low ==> A = B0
Audio Out Amp
EU_SCART [OPT]
EU
IC4100
R4146
EU 1K LM324D
EU
C4126 EU R4149
C4123
33K 1 14
10uF 6800pF
1 14
16V 50V
C4127
33pF
2 13
2 13
R4176
EU
EU 10K EU
5.6K 3 12
R4148
3 12
5.6K
R4147
4 11
EU
4 11
EU
5.6K R4143 5 10
5 10
EU EU
R4150
5.6K R4144 33K 6 9
6 9
C4128 33pF 7 8
7 8
R4177
R4145 10K EU
EU 1K
EU
C4124
C4125
10uF
EU 6800pF
16V
50V
EU
EU
R4151
2K
1/16W
RT1P141C-T112
Q4109
EU
SCART1_MUTE
3 1
EU C4130
EU
EU
R4153
2 0.1uF
2K
1/16W
EUROBBTV 2009.06.18
41
LGE Internal Use Only