Read LG 37LH40 / 37LH41 (CHASSIS:LA92G) Service Manual 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.
URSA_A[0-12]
12:V19
M_SPI_DI
AJ20
0.
1u
F
C1129
W25X20AVSNIG
IC1101
3
WP
2
DO
4
GND
1
CS
5
DIO
6
CLK
7
HOLD
8
VCC
M E
M C
_ R
X E
1 +
1:
R3
9
URSA_DQSB0
12:Y11
100
R1113
10uF
C1133
0.1uF
C1152
M E
M C
_ R
X E
4 -
1:
R3
7
+3.3V_MEMC
+5V_GENERAL
12MHz
X1100
M E
M C
_ R
X O
1 +
1:
R3
6
R M
L V
7 P
13:M19
+1.26V_MEMC
+3.3V_MEMC
1K
R1134
R M
L V
7 N
13:M20
M E
M C
_ R
X O
4 +
1:
R3
5
0.
1u
F
C1130
R M
L V
5 P
13:M19
100
R1110
SOE
AR15
33
R1152
R M
C L
K P
13:M18
10uF
C1147
M E
M C
_ R
X E
1 -
1:
R3
9
LMLV7P
13:G20
GVST
13:G21;13:M21
M E
M C
_ R
X E
3 -
1:
R3
8
10uF
C1116
R M
L V
3 N
13:M18
M_XTALI
008:P27
15pF
C1156
4.7K
R1165
M E
M C
_ R
X E
2 -
1:
R3
8
RMLV8N
13:M20
10pF
50V
OPT
C1122
M E
M C
_ R
X E
2 +
1:
R3
8
0.1uF
C1118
URSA_DQS2
12:Q12
0.1uF
C1119
120-ohm
L1103
10uF
C1104
0.
1u
F
C1127
120-ohm
L1106
+3.3V_MEMC
URSA_MCLKZ
12:Q14
G C
L K
4
100
R1109
LMLV0P
13:G17
100
R1118
H_CONV
13:G21;13:M21
+3.3V_MEMC
33
R1138
M_XTALO
008:P27
0.
1u
F
C1128
1uF
C1113
+3.3V_MEMC
33
R1128
0.
1u
F
C1134
0.
1u
F
C1151
33
R1126
M E
M C
_ R
X O
3 -
1:
R3
5
33
R1127
+3.3V_MEMC
100
R1117
M_XTALI
AV33
M E
M C
_ R
X E
C -
1:
R3
7
0.
1u
F
C1112
0.
1u
F
C1108
10uF
C1146
+1.8V_MEMC
M_SPI_DI
AZ26
33pF
C1158
LED CAP
U R
S A
_ D
Q M
0
12:Y12
1KOPT
R1135
120-ohm
L1100
URSA1.26_BEAD
120-ohm
L1102
10uF
C1106
M E
M C
_ R
X O
0 +
1:
R3
6
10pF
50V
OPT
C1123
0.1uF
C1114
1K
R1162
M E
M C
_ R
X O
C +
1:
R3
4
RK7002T116
Q1100
S
D
G
R M
L V
1 P
13:M17
LMLV5P
13:G19
10uF
C1105
33
R1129
URSA_DQS1
12:Y12
M E
M C
_ R
X E
4 +
1:
R3
8
10K
R1125
OPT
0.1uF
C1142
1K
R1100
0.
1u
F
C1110
100
R1112
U R
S A
_ W
E Z
12
:T
9;
12
:V
10
M_SPI_CK
AJ20
LMLV7N
13:G20
R M
L V
6 P
13:M19
1KOPT
R1137
RMLV8P
13:M20
10pF
50V
OPT
C1125
M E
M C
_ R
X E
C +
1:
R3
7
LMCLKN
13:G19
10K
R1102
MEMC_SCL
AJ21
0.1uF
C1139
G C
L K
2
1K
R1136
M_SPI_CZ
AS28
M E
M C
_ R
X E
3 +
1:
R3
8
10uF
C1100
R M
L V
2 P
13:M17
GCLK3
13:G22;13:M21
LMLV3P
13:G18
LMLV2P
13:G18
U R
S A
_ M
C L
K Z
1
12:Y14
1M
R1142
0.
1u
F
C1132
0.1uF
C1137
33
R1166
OPT
M E
M C
_ R
X O
4 -
1:
R3
5
M E
M C
_ R
X E
0 -
1:
R3
9
R M
L V
2 N
13:M18
1K
OPT
R1163
LMLV2N
13:G18
URSA_DQSB3
12:Q11
URSA_DQS3
12:Q12
U R
S A
_ D
Q M
1
12:Y12
M_SPI_CZ
AJ21
M_SPI_DO
AS27
M E
M C
_ R
X O
0 -
1:
R3
6
POL
13:G21;13:M21
GCLK1
13:G22;13:M22
10uF
C1144
+3.3V_ST
URSA_RASZ
12
:S
16
;1
2:
W1
6
120-ohm
L1104
URSA_BA1
12
:T
9;
12
:V
10
URSA_ODT
12:Q14;12:Y14
100
R1116
LED_LCM_FRC
AS20
R M
L V
0 P
13:M17
URSA_DQM2
12:Q12
URSA_DQSB1
12:Y11
0.
1u
F
C1109
0.1uF
C1135
LMLV1P
13:G17
LMLV3N
13:G18
0.1uF
C1140
M E
M C
_ R
X O
C -
1:
R3
4
MEMC_SCL
1:AI7
TP1119
10uF
C1143
10uF
C1115
0.1uF
C1138
WP_FLASH_FRC
13:G21;13:M21
15pF
C1155
M_SPI_DO
AJ20
1K
OPT
R1101
10uF
C1149
M E
M C
_ R
X O
1 -
1:
R3
6
33
R1139
100
R1150
R M
L V
3 P
13:M18
10uF
C1150
1N4148W
100V
D1100
33
R1151
1K
R1160
33
R1130
LMLV8N
13:G20
+3.3V_MEMC
100
R1115
0.
1u
F
C1131
100
R1114
LMCLKP
13:G19
FRC_DQ[0-31]
12:E20;12:AL20
DPM
13:U20;13:AI20
M_SPI_CK
AZ27
URSA_CASZ
12
:S
16
;1
2:
W1
6
R M
L V
5 N
13:M19
10K
R1103
10pF
50V
OPT
C1120
100
R1111
GCLK5
13:M20
M E
M C
_ R
X O
3 +
1:
R3
5
G V
D D
_ O
D D
120-ohm
L1101
G V
D D
_ E
V E
N
10pF
50V
OPT
C1121
+3.3V_MEMC
LMLV6P
13:G19
R M
C L
K N
13:M18
10uF
C1103
URSA_DQM3
12:Q12
LMLV6N
13:G20
JTP-1127WEM
SW1100
12
4
3
33
R1131
M E
M C
_ R
X E
0 +
1:
R3
9
LMLV5N
13:G19
33
R1107
MEMC_RESET
1:AB21
+3.3V_MEMC
TJC2508-4A
P1100
1
2
3
4
MEMC_SDA
L31
10uF
C1107
10K
R1144
R M
L V
0 N
13:M17
10K
R1158
820
R1123
10uF
C1101
URSA_DQS0
12:Y12
MEMC_SDA
1:AI7
U R
S A
_ M
C L
K 1
12:Y15
10uF
C1148
R M
L V
1 N
13:M17
LED_LCM_FRC
AJ21
100
R1124
0.
1u
F
C1111
0.1uF
C1141
33
R1106
URSA_BA0
12
:T
9;
12
:V
10
10uF
C1145
0.1uF
C1157
10uF
C1117
R M
L V
6 N
13:M19
URSA_MCLK
12:Q15
M E
M C
_ R
X O
2 +
1:
R3
6
10pF
50V
OPT
C1124
M E
M C
_ R
X O
2 -
1:
R3
5
M _X
T A
L O
AR33
WP_FLASH_FRC
AJ21
URSA_DQSB2
12:Q11
120-ohm
L1105
0.1uF
C1154
GCLK6
13:M20
BL-HB533A-AV-TRB
LD1100
100
R1120
0.1uF
C1153
1K
OPT
R1161
LMLV0N
13:G17
U R
S A
_ M
C L
K E
12
:T
9;
12
:V
10
1uF
C1136
100
R1119
10uF
C1102
LMLV1N
13:G18
LMLV8P
13:G20
LGE7327N [ MST7327N(FRC Tcon) ]
IC1100
SDAS
E1
SCLS
D1
GPIO[8]
F1
GPIO[9]
G1
GND_14
K8
VDDC_1
E5
GPIO[10]
E2
GPIO[11]
F2
GPIO[12]
F3
GPIO[13]
G2
GPIO[22]
M4
GPIO[23]
M5
GPIO[14]
G3
GPIO[15]
E4
GPIO[16]
F4
GPIO[17]
G4
GPIO[18]
H4
GPIO[19]
J4
GPIO[20]
K4
GPIO[21]
L4
VDDP_2
J6
GND_7
H9
GND_15
K9
VDDC_2
F6
MDATA[20]
H1
MDATA[19]
H2
MDATA[17]
H3
MDATA[22]
J1
MDATA[27]
J2
MDATA[28]
J3
MDATA[25]
K1
MDATA[30]
K2
AVDD_DDR_2
K6
DDR2_DQM[3]
K3
DDR2_DQM[2]
L1
GND_10
J8
DDR2_DQS[2]
L2
DDR2_DQSB[2]
L3
AVDD_DDR_4
L6
VDDP_3
L8
GND_8
H10
DDR2_DQS[3]
M1
DDR2_DQSB[3]
M2
AVDD_DDR_5
L7
MDATA[31]
M3
MDATA[24]
N1
GND_11
J9
MDATA[26]
N2
MDATA[29]
N3
AVDD_DDR_6
L10
MDATA[23]
P1
MDATA[16]
R1
MDATA[18]
T1
MDATA[21]
T2
MCLK[0]
R2
MCLKZ[0]
P2
GND_1
G7
AVDD_MEMPLL
L9
MVREF
N5
ODT
N4
R A
S Z
T3
C A
S Z
R3
MADR[0]
P3
MADR[2]
T4
MADR[4]
R4
GND_12
J1
0
MADR[6]
P4
MADR[8]
T5
MADR[11]
R5
W E
Z
P5
BADR[1]
T6
BADR[0]
R6
MADR[1]
P6
MADR[10]
T7
A V
D D
_ D
D R
_ 7
L11
MADR[5]
R7
MADR[9]
P7
MADR[12]
T8
MADR[7]
R8
MADR[3]
P8
M C
L K
E
N8
GND_16
K10
V D
D C
_ 3
F7
MDATA[4]
T9
MDATA[3]
R9
GND_13
K7
MDATA[1]
P9
MDATA[6]
T10
A V
D D
_ D
D R
_ 3
K11
MDATA[11]
R10
MDATA[12]
P10
MDATA[9]
T11
MDATA[14]
R11
A V
D D
_ D
D R
_ 1
J1
1
DDR2_DQM[1]
P11
DDR2_DQM[0]
T12
DDR2_DQS[0]
R12
DDR2_DQSB[0]
P12
GND_9
J7
VDDP_1
H11
DDR2_DQS[1]
T13
DDR2_DQSB[1]
R13
MDATA[15]
P13
MDATA[8]
T14
MDATA[10]
R14
MDATA[13]
P14
MDATA[7]
T15
MDATA[0]
R15
MDATA[2]
P15
MDATA[5]
T16
MCLK[1]
R16
MCLKZ[1]
P16
GPIO[26]
N9
GPIO[27]
N10
GND_17
N11
RESET
M11
V D
D C
_ 4
G6
GPIO_3
D8
GPIO_5
D10
GPIO_9
E10
GPIO_8
E3
GPIO_1
D2
LAV8P
C15
LAV8N
B15
WPWM
A15
OPTP
A16
OPTN
B16
FLK
C16
GCLK6
D15
GCLK5
D16
AVDD_33_2
F9
GND_4
G10
LBV0P
E15
LBV0N
E16
LBV1P
E14
LBV1N
F14
LBV2P
F16
LBV2N
F15
LBV3P
G15
LBV3N
G16
LBVCKP
G14
LBVCKN
H14
LBV5P
H16
LBV5N
H15
LBV6P
J15
LBV6N
J16
LBV7P
J14
LBV7N
K14
GND_3
G9
LBV8P
L14
LBV8N
L15
GOE
L16
GSC
M16
AVDD_33_1
F8
GSPR
M15
GSP
M14
SOE
N16
POL
N15
VDDC_5
H6
GPIO[24]
N6
GPIO[7]
E12
GPIO[6]
D14
GPIO[5]
F12
GPIO[4]
E13
HCONV
F13
SPM
G13
LEDON
H13
GPIO[0]
J13
PWM0
K12
PWM1
L12
CSZ
K13
SDO
M12
SDI
M13
SCK
L13
GPIO[30]
N14
GPIO[29]
N13
GPIO[28]
N12
RE4P
B1
RE4N
A1
RE3P
C1
RE3N
C2
R E
C K
P
A2
R E
C K
N
B2
RE2P
B3
RE2N
A3
RE1P
C3
RE1N
C4
RE0P
A4
RE0N
B4
A V
D D
_ L
V D
S _1
F11
GND_6
H8
RO4P
B5
R O
4 N
A5
RO3P
C5
R O
3 N
C6
R O
C K
P
A6
R O
C K
N
B6
RO2P
B7
R O
2 N
A7
RO1P
C7
R O
1 N
C8
RO0P
A8
R O
0 N
B8
A V
D D
_ L
V D
S _2
G11
GND_5
H7
S C
A N
_ B
L K
K15
SCAN_BLK1
K16
X O
U T
D4
XIN
D3
V D
D _E
V E
N
B14
V D
D _O
D D
A14
S D
A M
D5
S C
L M
D6
GPIO[25]
N7
GPIO_10
E11
GPIO_7
D13
GPIO_6
D11
GND_2
G8
A V
D D
_ P
L L
F10
LAV0P
B9
L A
V 0N
A9
LAV1P
C9
L A
V 1N
C10
LAV2P
A10
L A
V 2N
B10
LAV3P
B11
L A
V 3N
A11
L A
V C
K P
C11
L A
V C
K N
C12
LAV5P
A12
L A
V 5N
B12
GPIO_4
D9
GPIO_2
D7
LAV6P
B13
L A
V 6N
A13
LAV7P
C13
L A
V 7N
C14
R E
X T
D12
4.7K
R1167
GVDD_ODD
1K
OPT
R1168
+3.3V_MEMC
0
L1100-*1
URSA1.26_0OHM
10K
C1158-*1
LED PULL DOWN
FRC_DQ[31]
URSA_A[3]
FRC_DQ[17]
FRC_DQ[28]
FRC_DQ[26]
FRC_DQ[14]
URSA_A[7]
URSA_A[6]
FRC_DQ[12]
FRC_DQ[15]
FRC_DQ[3]
FRC_DQ[29]
URSA_A[10]
FRC_DQ[19]
URSA_A[4]
FRC_DQ[9]
URSA_A[12]
FRC_DQ[13]
URSA_A[9]
FRC_DQ[21]
URSA_A[11]
FRC_DQ[25]
URSA_A[1]
FRC_DQ[11]
URSA_A[2]
FRC_DQ[27]
URSA_A[8]
URSA_A[5]
FRC_DQ[10]
FRC_DQ[0]
URSA_A[0]
FRC_DQ[23]
FRC_DQ[22]
FRC_DQ[2]
FRC_DQ[1]
FRC_DQ[30]
FRC_DQ[5]
FRC_DQ[0-31]
FRC_DQ[8]
FRC_DQ[6]
FRC_DQ[20]
FRC_DQ[7]
FRC_DQ[24]
FRC_DQ[16]
FRC_DQ[4]
FRC_DQ[18]
XTAL
HIGH
HIGH
HIGH
I2C
LOW
GPIO8
SPI FLASH(2Mbit)
LOW
URSA2 MINI LVDS TYPE
VENUS (MST7329N)
M+S NORMAL 42"(MST7327N)
HIGH
M+S GIP 37"(MST7327N)
URSA2 LVDS TYPE
HIGH
GPIO12
[ISP & I2C Port for FRC]
HIGH
HIGH
EEPROM
LOW
URSA2 MINI LVDS TYPE
LOW
LOW
HIGH
[LCM LED Block]
SPI
GPIO14
HIGH
LOW
M+S NORMAL 47"(MST7327N)
HIGH
PWM0
HIGH
URSA2 MINI LVDS TYPE
PWM1
C
2009
Click on the first or last page to see other 37LH40 / 37LH41 (CHASSIS:LA92G) service manuals if exist.