Common Area - LG 42LD450 Service Manual

COMMON AREA

New Item Development
EARPHONE BLOCK
HP_LOUT EXCEPT_CHINA_HOTEL_OPT
C1118
090:V9 10uF
16V C1115
1000pF
50V
R1125
C
OPT 1K
Q1101 B
MMBT3904-(F)
E
HP_ROUT
EXCEPT_CHINA_HOTEL_OPT
C1119
10uF
090:V8
16V
C1116
C
1000pF
50V
Q1102 B
R1128
OPT
1K MMBT3904-(F)
E
PC AUDIO
JK1102
PEJ027-01
E_SPRING
3
T_TERMINAL1
6A
B_TERMINAL1
7A
D1101
R_SPRING C1107
4 AMOTECH
100pF R1102
5.6V 50V 470K
OPT
T_SPRING
5
B_TERMINAL2
7B
D1102
T_TERMINAL2 C1108 R1103
6B
AMOTECH
100pF 470K
5.6V 50V
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 © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
E
JK3301
+3.3V_Normal
MMBT3904-(F) KJA-PH-0-0177
B Q1104
GND 5
C
L 4
R1155
1K
DETECT 3
HP_DET
R 1
E
MMBT3904-(F)
SPK_R+_HOTEL
B Q1103
052:I22
C
SPK_R-_HOTEL
052:I22
SPDIF OPTIC JACK
5.15 Mstar Circuit Application
SPDIF_OUT
PC_R_IN
090:S13
R1107 R1112
090:T20
15K 0
R1110
10K
R1108
15K
PC_L_IN 090:S13
R1113
0
R1111
10K
+3.5V_ST
C
R1129
B
3.3K
SIDE_HP_MUTE
Q1106
2SC3052
E
+3.3V_Normal
IC1104
OPT
NL17SZ00DFT2G
R1152
4.7K
A VCC
OPT GND
1 5
C1117
0.1uF
B
16V VCC
2
OPT
R1126
GND Y
22 VINPUT
3 4
OPT C1131
C1121
0.1uF
100pF
16V
50V
R1127
0
RGB PC
D1115
ENKMC2838-T112
A1
C
A2
R1140
IC1105 R1139
4.7K
AT24C02BN-10SU-1.8 4.7K
A0 VCC
1 8
A1 WP
2 7
A2 SCL
3 6
GND SDA
4 5
C1127 C1128 R1141
18pF 18pF 22
50V 50V
DSUB_VSYNC
R1150
0
DSUB_HSYNC
R1148
C1126
C1122 0 D1113
D1109
68pF D1114
68pF
30V
50V
50V 5.6V
OPT 30V
OPT OPT
DSUB_B+
OPT
C1123
R1133 D1110
OPT
75 30V
DSUB_B-
DSUB_G+
OPT
R1135 D1111
C1124
75 30V
OPT
DSUB_G-
DSUB_R+
OPT
D1112
C1125
R1137
OPT 30V
75
DSUB_R-
GP2_Saturn7M
COMMON AREA
+5V_Normal
C1129
R1142
0.1uF
10K
16V
EDID_WP
RGB_DDC_SCL
RGB_DDC_SDA
R1143
22
D1116
5.6V
OPT
+3.3V_Normal
R1146
10K
DSUB_DET
R1147
1K
D1117
5.6V
Ver. 1.0
9
LGE Internal Use Only