LG 37LD310H / 37LD320H (CHASSIS:LA06A) Service Manual ▷ View online
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.
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
OPT
D1116
+3.3V_Normal
18pF
50V
C1127
10K
R1142
30V
D1113
15K
R1108
DSUB_G-
5.6V
D1117
30V
D1110
EDID_WP
5.6V
OPT
D1114
DSUB_G+
100pF
50V
50V
C1108
68pF
50V
50V
OPT
C1126
30V
D1111
DSUB_HSYNC
18pF
50V
C1128
RGB_DDC_SCL
0
R1138
15K
R1107
0
R1136
470K
R1103
PC_R_IN
0 0 2 : S 1 2
4.7K
R1140
DSUB_R+
10K
R1111
AMOTECH
5.6V
OPT
D1101
470K
R1102
DSUB_B-
AT24C02BN-SH-T
IC1105
ATMEL_D type
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
0 . 1 u F
16V
C1129
4.7K
R1139
1K
R1147
OPT
OPT
OPT
C1123
RGB_DDC_SDA
DSUB_B+
DSUB_VSYNC
30V
D1109
10K
R1110
100pF
50V
C1107
AMOTECH
5.6V
OPT
D1102
OPT
OPT
C1124
68pF
50V
50V
OPT
C1122
+5V_Normal
22
R1143
ENKMC2838-T112
D1115
A1
C
A2
PC_L_IN
0 0 2 : S 1 2
0
R1134
DSUB_DET
30V
D1112
0
R1148
0
R1150
10K
R1146
22
R1141
75
R1133
75
R1135
75
R1137
0
R1112
0
R1113
15pF
50V
50V
C1130
9.1K
R1130
2SC3875S(ALY)
Q1116
E
B
C
CB3216PA501E
L1100
OPT
R1129
3.3K
R1125
1.6K
R1118
6.8K
OPT
R1127
0 . 1 u F
OPT
C1132
1uF
50V
50V
C1136
0
R1122
2SC3052
Q1118
E
B
C
0
R1145
1uF
10V
10V
OPT
C1137
10uF
16V
16V
C1134
1K
R1116
10uF
6.3V
C1131
+5V_Normal
1uF
10V
C1133
2SA1530A-T112-1R
Q1117
E
B
C
4.7K
R1131
R1131
EXT_SPK_L+
009:AF24
390
R1117
TPA6011A4PWPRG4
IC1100
3
PVDD_1
2
ROUT-
4
RHPIN
1
PGND_1
6
RIN
5
RLINEIN
7
VDD
8
LIN
9
LLINEIN
10
LHPIN
11
PVDD_2
12
LOUT-
13
PGND_2
14
LOUT+
15
SHUTDOWN
16
FADE
17
BYPASS
18
AGND
19
SEMAX
20
SEDIFF
21
VOLUME
22
HP/LINE
23
SE/BTL
24
ROUT+
EXT_SPK_L-
0 0 9 : P 2 0
EXT_SPK_L-
009:AF25
SUB_MUTE
009:AC20;016:AE15
1K
R1119
OPT
R1121
0 . 1 u F
C1135
EXT_SPK_L+
009:W21
4.7K
R1132
OPT
R1126
1K
R1124
0
R1144
EXT_SPK
002:V11
SUB_MUTE
0 0 9 : Z 2 5 ; 0 1 6 : A E 1 5
100
R1128
3K
R1115
OPT
R1120
10K
R1114
100
R1123
1uF
10V
10V
OPT
C1138
+5V_Normal
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
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
SPG09-DB-010
P1103
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
AT24C02C-SSHM-T
IC1105-*1
ATMEL_E type
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
COMMON AREA
PC AUDIO
RGB PC (250 APPLY)
EXTERNAL SPEAKER OUT
21
LD320H-UA_LA06A
2 0 1 0 . 0 9 . 0 4
9 ( 8 )
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.
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.
10K
R1021
0
R1002
0 . 1 u F
C1001
RS232_TX010:V16
RESET_high
016:H27
22K
R1040
TP1000
0 . 3 3 u F
C1009
+5V_ST
SPG09-DB-009
P1000
1
2
3
4
5
6
7
8
9
10
PTC_TX_S7
0 0 1 : A J 2 4
22K
R1032
0
R1000
UART_SWA
016:AA21
MC14053BDR2G
IC1000
3
Z1
2
Y0
4
Z
1
Y1
6
INH
5
Z0
7
VEE
8
VSS
9
C
10
B
11
A
12
X0
13
X1
14
X
15
Y
16
VDD
100
R1015
0 . 1 u F
C1010
100
R1013
SDC15
D1004
A1
C
A2
0
R1001
1K
R1027
PTC_RX_S7_3.3V
0 0 1 : A J 2 4
0 . 3 3 u F
C1008
PTC_RX_5V
0 1 0 : R 2 2 ; 0 1 6 : X 7
22K
R1033
22K
R1041
MC14053BDR2G
IC1001
3
Z1
2
Y0
4
Z
1
Y1
6
INH
5
Z0
7
VEE
8
VSS
9
C
10
B
11
A
12
X0
13
X1
14
X
15
Y
16
VDD
100
R1009
JP1001
100
R1005
0
R1003
+5V_ST
2SC3875S(ALY)
Q1001
E
B
C
TP1002
0 . 1 u F
C1000
JP1000
+3.5V_ST
100
R1019
10K
R1022
UART3_TX
0 1 0 : E 2 5 ; 0 1 6 : N 1 5 ; 0 1 6 : Y 2 5 ; 0 1 6 : A A 3
PTC_RX_5V
0 1 0 : K 2 3 ; 0 1 6 : X 7
UART3_TX
0 1 0 : E 1 6 ; 0 1 6 : N 1 5 ; 0 1 6 : Y 2 5 ; 0 1 6 : A A 3
10K
R1030
UART_SWB
016:AA21
RS232_RX010:V16
220pF
C1012
+3.5V_ST
JP1002
100
R1010
+3.5V_ST
100
R1039
1K
R1037
100
R1034
0 . 3 3 u F
C1006
100
R1012
100
R1011
220pF
C1011
SDC15
D1007
A1
C
A2
+3.5V_ST
RS232_TX
010:N16
1K
R1026
2SC3875S(ALY)
Q1003
E
B
C
+5V_ST
S7_TX
001:X17
100
R1035
100
R1006
0
R1007
100
R1008
2SC3875S(ALY)
Q1002
E
B
C
2SC3875S(ALY)
Q1004
E
B
C
1K
R1036
UART3_RX
0 1 0 : K 2 3 ; 0 1 6 : N 1 4 ; 0 1 6 : Y 2 5 ; 0 1 6 : A A 4
S7_RX
001:X17
SDC15
D1005
A1
C
A2
RS232_RX
010:N15
0 . 0 4 7 u F
C1007
10K
R1031
+5V_ST
+3.5V_ST
TP1001
100
R1020
SDC15
D1006
A1
C
A2
2SC3875S(ALY)
Q1005
E
B
C
UART3_RX
0 1 0 : N 1 4 ; 0 1 6 : N 1 4 ; 0 1 6 : Y 2 5 ; 0 1 6 : A A 4
OPT
R1038
2SC3875S(ALY)
Q1000
E
B
C
470K
R1017
SIDE_AV_OPT
30V
SIDE_AV_OPT
D1000
10K
R1018
SIDE_AV_OPT
75
R1014
SIDE_AV_OPT
BLM18PG121SN1D
L3303
SIDE_AV_OPT
5.6V
SIDE_AV_OPT
D1002
P P J 2 3 5 - 0 1
JK1000
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
100pF
C1002
SIDE_AV_OPT
12K
R1028
SIDE_AV_OPT
SIDEAV_R_IN
BLM18PG121SN1D
L3302
SIDE_AV_OPT
5.6V
SIDE_AV_OPT
D1003
470K
R1016
SIDE_AV_OPT
1K
R1023
SIDE_AV_OPT
BLM18PG121SN1D
L3301
SIDE_AV_OPT
SIDEAV_L_IN
SIDEAV_DET
+3.3V_Normal
100pF
50V
C1003
SIDE_AV_OPT
SIDEAV_CVBS_IN
100pF
OPT
C1005
5.6V
D1001
SIDE_AV_OPT
10K
R1025
SIDE_AV_OPT
100pF
50V
C1004
SIDE_AV_OPT
10K
R1024
SIDE_AV_OPT
12K
R1029
SIDE_AV_OPT
0
R1042
0
R1043
0
R1044
0
R1045
MAX3232CDR
IC1003
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
PTC_TX
016:X9
EXT_PTC_RESET
0 0 1 : A J 2 6
10K
R1047
10K
R1048
EXT_PTC_UPDATE
0 0 1 : A J 2 1
Update_SW
0 1 6 : F 2 2
+3.5V_ST
47K
R1046
47K
R1049
RS232C/ETH
X
X
1
SW_A
PC_SIM
0
RxD
X
1
PTC OAD
X
M-STAR DEBUG
COM/MON
0
SELECT PTC OAD OR NOT
1
X
S e r i a l P o r t
1
SELECT PTC OR BCM DEBUG
1
O b j e c t i v e
X
PTC DEBUG
SIMULATION
SW_B
0
0
SIDE_AV
( N e w I t e m D e v e l o p m e n H : 9 . 2 m m )
21
LD320H-UA_LA06A
2 0 1 0 . 0 9 . 0 4
1 0 ( 9 )
150K
1%
1%
TCON_32_FHD
R635-*1
27K
1%
1%
TCON_32_FHD
R636-*1
24K
1%
1%
TCON_32_FHD
R641-*1
510K
TCON_32_FHD
1%
R609-*1
150K
1%
1%
TCON_32_FHD
R610-*1
150K
1%
1%
TCON_37_FHD
R643-*2
20K
TCON_37_FHD
R637-*2
1%
910K
1%
1%
TCON_37_FHD
R635-*2
470K
1%
1%
TCON_37_FHD
R640-*2
56K
1%
1%
TCON_37_FHD
R636-*2
56K
1%
1%
TCON_37_FHD
R641-*2
470K
TCON_37_FHD
1%
R609-*2
510K
TCON_42_FHD
1%
R609-*3
150K
1%
1%
TCON_42_FHD
R635-*3
150K
1%
1%
TCON_42_FHD
R610-*3
150K
1%
1%
TCON_47_FHD_60_LAMP
R610-*4
510K
TCON_47_FHD_60_LAMP
1%
R609-*4
15K
1%
1%
TCON_42_FHD
R641-*3
56K
1%
1%
TCON_42_FHD
R620-*3
20K
1%
1%
TCON_47_FHD_60_LAMP
R641-*4
510K
TCON_47_FHD
1%
R609-*5
150K
1%
1%
TCON_47_FHD
R610-*5
12K
1%
1%
TCON_37_FHD
R622-*2
22K
1%
1%
TCON_32_FHD
R620-*1
20K
1%
1%
TCON_47_FHD
R641-*5
220K
1%
1%
TCON_32_FHD
R621-*1
11K
1%
1%
TCON_32_FHD
R622-*1
51K
1%
1%
TCON_32_FHD
R637-*1
270K
TCON_32_FHD
R643-*1
1%
200K
TCON_32_FHD
R611-*1
1%
47K
1%
1%
TCON_37_FHD
R620-*2
220K
1%
1%
TCON_37_FHD
R621-*2
91K
TCON_37_FHD
R610-*2
1%
220K
1%
1%
TCON_42_FHD
R621-*3
75K
TCON_42_FHD
R636-*3
1%
200K
TCON_42_FHD
R611-*3
1%
11K
1%
1%
TCON_42_FHD
R622-*3
220K
1%
1%
TCON_47_FHD_60_LAMP
R621-*4
11K
1%
1%
TCON_47_FHD_60_LAMP
R622-*4
30K
1%
1%
TCON_47_FHD_60_LAMP
R620-*4
51K
1%
1%
TCON_47_FHD_60_LAMP
R637-*4
270K
TCON_47_FHD_60_LAMP
R643-*4
1%
180K
1%
1%
TCON_47_FHD_60_LAMP
R635-*4
68K
1%
1%
TCON_47_FHD_60_LAMP
R636-*4
220K
TCON_47_FHD_60_LAMP
1%
R611-*4
51K
1%
1%
TCON_47_FHD
R620-*5
220K
1%
1%
TCON_47_FHD
R621-*5
11K
1%
1%
TCON_47_FHD
R622-*5
51K
1%
1%
TCON_47_FHD
R637-*5
270K
TCON_47_FHD
R643-*5
1%
75K
TCON_47_FHD
R636-*5
1%
180K
1%
1%
TCON_47_FHD
R635-*5
220K
TCON_47_FHD
1%
R611-*5
27K
1%
1%
TCON_55_FHD
R637-*6
150K
TCON_55_FHD
1%
R643-*6
180K
TCON_55_FHD
1%
R609-*6
68K
1%
1%
TCON_55_FHD
R610-*6
56K
TCON_55_FHD
1%
R611-*6
510K
1%
1%
TCON_55_FHD
R620-*6
27K
1%
1%
TCON_55_FHD
R622-*6
68K
1%
1%
TCON_55_FHD
R621-*6
150K
1%
1%
TCON_55_FHD
R635-*6
75K
TCON_55_FHD
1%
R636-*6
15K
1%
1%
TCON_55_FHD
R641-*6
27K
1%
1%
TCON_42_FHD
R637-*3
150K
TCON_42_FHD
R643-*3
1%
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.
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.
1K
1%
1%
R601-*1
TCON_32_FHD
1K
1%
1%
R652-*1
TCON_32_FHD
1K
1%
1%
R602-*1
TCON_32_FHD
1K
1%
1%
TCON_37_FHD
R602-*2
1K
1%
1%
TCON_37_FHD
R601-*2
1K
1%
1%
TCON_42_FHD
R652-*3
1K
1%
1%
TCON_42_FHD
R602-*3
1.5K
5%
5%
TCON_37_FHD
R652-*2
1K
1%
1%
TCON_47_FHD
R602-*5
1K
1%
1%
TCON_47_FHD
R652-*5
1K
1%
1%
TCON_47_FHD
R601-*5
0
5%
5%
TCON_55_FHD
R652-*6
1K
1%
1%
TCON_42_FHD_60_LAMP
R602-*4
1K
1%
1%
TCON_42_FHD_60_LAMP
R652-*4
T-CON Power Table
VGH
VGL
VDD
HVDD
32_FHD
R640 OPEN
R611 OPEN
VGH
VGL
VDD
HVDD
37_FHD
VGH
VDD
42_FHD
VGL
R640 OPEN
HVDD
HVDD
VDD
R640 OPEN
47_FHD_60_LAMP
VGL
47_FHD
VGH
HVDD
VDD
VGL
R640 OPEN
VGH
VGH
HVDD
VDD
VGL
55_FHD
( W i t h o u t 6 0 H z L a m p )
( W i t h o u t 6 0 H z L a m p )
R640 OPEN
VCOM FEED BACK
VCOM FEED BACK
VCOM FEED BACK
R601 OPEN
VCOM FEED BACK
VCOM FEED BACK
R601 OPEN
R602 OPEN
VCOM FEED BACK
VGH
VGL
R601 OPEN
VDD
VCOM FEED BACK
42_FHD_60_LAMP
HVDD
SHEET7
SHEET7
SHEET7
SHEET7
SHEET7
2 0 1 0 . 0 9 . 0 4
LD320H-UA_LA06A
21
1 5 ( 1 3 )
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