LG EzSign 42LD452B, Service Manual

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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.
OPT
OPT
C1125
DSUB_R-
5.6V
OPT
D1116
SPDIF_OUT
2:X18
+3.3V_Normal
18pF
50V
C1127
10K
R1142
30V
D1113
SPG09-DB-010 JK1104
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
15K
R1108
DSUB_G-
5.6V
D1117
30V
D1110
EDID_WP
5.6V
OPT
D1114
100pF
50V
C1108
68pF
50V
OPT
C1126
30V
D1111
22
R1126
OPT
DSUB_HSYNC
18pF
50V
C1128
RGB_DDC_SCL
0
R1138
15K
R1107
0
R1136
470K
R1103
PC_R_IN
2 : S 1 6
4.7K
R1140
10K
R1111
AMOTECH
5.6V
OPT
D1101
0 . 1 u F
16V
C1117
OPT
470K
R1102
DSUB_B-
AT24C02BN-10SU-1.8
IC1105
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
Fiber Optic
JST1223-001
JK1103
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
0 . 1 u F
16V
C1129
4.7K
R1139
+3.3V_Normal
100pF
50V
C1121
1K
R1147
OPT
OPT
C1123
RGB_DDC_SDA
DSUB_VSYNC
30V
D1109
10K
R1110
100pF
50V
C1107
AMOTECH
5.6V
OPT
D1102
OPT
OPT
C1124
68pF
50V
OPT
C1122
+5V_Normal
22
R1143
ENKMC2838-T112
D1115
A1
C
A2
PC_L_IN 2 : S 1 6
NL17SZ00DFT2G
IC1104
OPT
3
GND
2
B
4
Y
1
A
5
VCC
0
R1134
DSUB_DET
30V
D1112
0
R1148
0
R1150
10K
R1146
0
R1127
0 . 1 u F
16V
C1131
22
R1141
4.7K
OPT
R1152
75
R1133
75
R1135
75
R1137
P E J 0 2 7 - 0 1
JK1102
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
0
R1112
0
R1113
GND
IR
0 1 4 : J 2 2
GND
TX
0 0 8 : A B 2 2 ; 0 0 1 : L 4
0
R1016
GND
10
R1024
47K
R1022
GND
P E J 0 2 7 - 0 1
JK1100
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
0 R1021
0
R1017
+3.5V_ST
510 R166
2 . 2 u F
16V
C120
510 R164
3.9K R163
47uF
25V
C114
10K
R114
5.1V
D104
10K
R130
0.01uF
C117
AO3407A
Q102
G
D S
RJP_CTRL3 008:AR28
MJ-657PT-8-SD
JK1105
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
RJP_CTRL4
008:AE21
510 R153
OPT
+12V/+15V
3.9K R152
0.01uF
C116
0.01uF
C119
5.1V
D101
5.1V
D103
5.1V
D102
510 R154
+3.3V_Normal
RJP_CTRL1
008:AD19
10K
R131
0.01uF
C115
MLB-201209-0120P-N2
L101
1uF
25V
OPT
C113
3.9K R165 OPT
510 R167
3.9K R161
5.1V
D105
0.01uF
C118
RJP_CTRL0 008:AP15
RJP_CTRL2 008:AD20
3.9K R162
SIDEAV_L_IN
12K
R3309
SIDE_AV_OPT
10K
R3306
SIDE_AV_OPT
5.6V
SIDE_AV_OPT
D3303
P P J 2 3 5 - 0 1
JK3302
SIDE_AV_OPT
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
SIDEAV_R_IN
470K
R3303
SIDE_AV_OPT
100pF
50V
C3302
SIDE_AV_OPT
SIDEAV_CVBS_IN
+3.3V_Normal
SIDEAV_DET
12K
R3308
SIDE_AV_OPT
100pF
OPT
C3304
30V
SIDE_AV_OPT
D3301
5.6V
SIDE_AV_OPT
D3304
75
R3301
SIDE_AV_OPT
BLM18PG121SN1D
L3301
SIDE_AV_OPT
BLM18PG121SN1D
L3303
SIDE_AV_OPT
BLM18PG121SN1D
L3302
SIDE_AV_OPT
1K
R3305
SIDE_AV_OPT
100pF
C3301
SIDE_AV_OPT
5.6V
D3302
SIDE_AV_OPT
10K
R3307
SIDE_AV_OPT
100pF
50V
C3303
SIDE_AV_OPT
470K
R3304
SIDE_AV_OPT
10K
R3302
SIDE_AV_OPT
0 R1452
+3.3V_Normal
USB DOWN STREAM
KJA-UB-4-0004
JK1450
1
2
3
4
5
SIDE_USB_DM
CDS3C05HDMI1
5.6V
OPT
D1452
0 R1456
10K
R1454
USB1_CTL
CDS3C05HDMI1
5.6V
OPT
D1451
TP1451
4.7K
OPT
R1455
MLB-201209-0120P-N2
120-ohm
L1451
AP2191SG-13
IC1450
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
47 R1451
+5V_USB
USB1_OCD
0 . 1 u F
C1453
/RST_HUB
0 R1453
SIDE_USB_DP
10uF
10V
C1452
470pF
C1109
470pF
OPT C1110
5.1V
D1103
22uF
16V
C1451
COMMON AREA
GP2_Saturn7M
5 . 1 5 M s t a r C i r c u i t A p p l i c a t i o n
PC AUDIO
RGB PC
SPDIF OPTIC JACK
COMMON AREA
V e r . 1 . 0
9
IR
RJP
SIDE_AV
$ 0 . 0 7 7
USB_DIODES
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