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.
10uF
25V
C1355
Z_OUT
004:N20
0.1uF
50V
C1305
CLK5
004:E37;004:AP10
150pF
50V
C1338
0
R1332
GMA6
004:E35;004:T13
1/10W
0
5%
R1317
RMLV6P
001:AV37
GVDD_EVEN
SOE
RMLV0N
001:AT37
VGH_I
(+24V)
RMLV5P
001:AU37
1/16W
10K
5%
R1355
GCLK4
EN1
001:BB21;004:U35;004:BC4
1/8W
75K
1 %
R1318
0.1uF
50V
OPT
C1380
GCLK2_I
V C
O M
O U
T FB
004:AK16
VDD_LCM
(+16V)
CLK3
RMLV8P
001:BB30
KTA1552T
Q1302
E
B
C
GMA4
0.1uF
16V
C1351
BAV99RWT1
D1303
LMCLKP
001:BB26
15pF
50V
OPT
C1347
1uF
25V
C1375
0.1uF
16V
C1359
READY
RMLV2N
001:AT37
0.1uF
50V
C1301
VDD_LCM_PG
(+16V)
1/16W
2K
5 %
R1311
VDD_LCM_O
(+16V)
GMA18
1uF
25V
C1377
GVST_I
VGL
(-5V)
0.1uF
16V
C1360
READY
GCLK6_I
0.
47
uF
50V
C1325
10uF
35V
C1321
LMLV1P
001:BB28
GMA9
004:L34;004:T10
VGH_I
(+24V)
CLK2
004:E38;004:AP9
0.1uF
16V
C1358
READY
FREQ
004:AN31
H_CONV
001:BB21;004:E30
VDD_EVEN
004:E37;004:AP11
GMA12
004:E29;004:AC11
VCOM
004:AM16
GMA7
004:L35;004:T12
GVST_I
001:BE23;004:C4;004:E29
VCOMLFB
004:AJ15
0.1uF
50V
C1366
VCC_LCM
(+3.3V)
VDD_EVEN
004:L37;004:AP11
LMLV5P
001:BB26
1/10W
10
5%
R1339
KTC3552T-RTK
Q1301
E
B
C
GMA10
004:E29;004:T10
1/10W
2.7K
1%
R1377
LMLV2P
001:BB27
GMA18
004:L28;004:AC15
0
R1308
0
OPT
R1357
GVDD_ODD
GCLK5_I
1/16W
330
1 %
R1345
CLK4
RMCLKN
001:AU37
0.1uF
16V
C1368
READY
10uF
35V
C1383
VGH
(+24V)
1/8W
51K
1%
R1326
0
R1333
GCLK1_I
KP20A-60S-0.5SH
P1300
1
GND
2
CLK1
3
CLK2
4
CLK3
5
CLK4
6
CLK5
7
CLK6
8
VGH
9
VDD_ODD
10
VDD_EVEN
11
VGL
12
VST
13
VCOMFB
14
VCOMIN
15
GMA1_B
16
GMA3
17
GMA4
18
GMA6
19
GMA7
20
GMA9
21
POL
22
SOE
23
GND
24
LMLV8N
25
LMLV8P
26
LMLV7N
27
LMLV7P
28
LMLV6N
29
LMLV6P
30
LMLV5N
31
LMLV5P
32
LMLVCLKN
33
LMLVCLKP
34
LMLV3N
35
LMLV3P
36
LMLV2N
37
LMLV2P
38
LMLV1N
39
LMLV1P
40
LMLV0N
41
LMLV0P
42
GND
43
CHGSHR
44
H_CONV
45
GVST
46
GMA10
47
GMA12
48
GMA13
49
GMA15
50
GMA16
51
GMA18
52
GND
53
VCC
54
VCC
55
GND
56
VDD
57
VDD
58
VDD
59
Z_OUT_L
60
GND
61
GND
10uF
35V
C1382
GMA12
004:L29;004:AC11
22uF
25V
C1309
10pF
50V
OPT
C1356
10nF
50V
C1324
SOE_L
LMLV0P
001:BB28
LMLV7N
001:BB25
FBP
004:AN30
GMA13
0.1uF
50V
C1339
1/10W
100K
5%
R1350
0.1uF
16V
C1370
READY
SOE_L
004:K19
RMLV2P
001:AT37
0.
1u
F
50V
C1330
EN1
004:AX4
0
R1340
0.1uF
16V
C1363
READY
GMA3
004:L35;004:T14
CLK2
BAV99RWT1
D1302
GMA4
004:E35;004:T13
15pF
50V
OPT
C1349
0
R1360
R1360
VGH
(+24V)
Z_OUT
004:K20
GMA3
004:E35;004:T14
10
R1346
FB
004:AN37
15pF
50V
OPT
C1342
CHGSHR
004:L29
GMA10
VGL_I
(-5V)
H_CONV
001:BB21;004:L34
VGH_I
10
R1347
10uF
35V
C1323
MBRA340T3G
40V
D1304
0
R1334
GVDD_ODD_I
V C
O M
O U
T FB
0
R1322
REF
004:AD23
0.1uF
16V
C1302
1uF
25V
C1300
GCLK3_I
VST
GMA1
004:E35;004:T15
VCOMLOUT
004:BD11
22uF
25V
C1310
FBP
004:AA28
1/8W
5.1K
1%
R1327
CHGSHR
004:E30
VCOMLOUT
004:E36
VST
004:L38;004:AP12
CLK2
004:L37;004:AP9
VCOMROUT
004:BD12
22uF
16V
C1340
1/10W
0
5%
R1338
EN2
004:AN33
4.7uF
10V
C1313
VCC_LCM
(+3.3V)
4700pF
50V
C1328
0.1uF
16V
C1361
READY
LMLV6N
001:BB25
1/10W
360
1%
R1358
VGH_I
(+24V)
GCLK2_I
RMLV7P
001:AW37
CLK3
004:E38;004:AP10
1uF
25V
C1304
VDD_EVEN
LMLV5N
001:BB26
2.4K
R1313
CLK4
004:E37;004:AP10
GMA13
004:E29;004:AC12
SOE_R
GVST_I
001:BE23;004:C4;004:L34
0
R1335
0.1uF
16V
C1371
READY
POL
001:BE23;004:L34
BUF16821AIPWPR
IC1301
3
OUT2
2
OUT1
4
OUT3
1
VCOM2
6
OUT5
5
OUT4
7
OUT6
8
GNDA_1
9
VS_1
10
OUT7
11
OUT8
12
OUT9
13
VSD
14
SCL
15
SDA
16
AO
17
BKSEL
18
GNDD
19
OUT10
20
OUT11
21
OUT12
22
OUT13
23
VS_2
24
GNDA_2
25
OUT14
26
OUT15
27
OUT16
28
VCOM1
1/10W
10K
5%
R1371
4.7uF
16V
C1379
10nF 50V
C1331
10uF
10V
C1322
REF
004:AT35
0.1uF
16V
C1369
READY
GMA7
POL
001:BE23;004:E34
0
R1331
GCLK3
GCLK2
GCLK6
CLK1
VGL_I
(-5V)
0.1uF
16V
C1372
READY
10uF
35V
C1316
10uF
35V
C1318
1nF
50V
C1378
RMLV7N
001:AW37
VGL
(-5V)
0
R1321
VCC_LCM
(+3.3V)
GMA15
004:E29;004:AC12
GCLK1
1/10W
0
5%
R1349
GVST
GD
004:Z33
22UH
2.8A
L1301
10uF
35V
C1312
1/8W
13K
1%
R1324
RMLV1P
001:AT37
VDD_LCM
(+16V)
LMLV3P
001:BB27
18K
R1378
0
R1330
0
R1329
VCOMLFB
GMA16
GMA9
004:E34;004:T10
0
R1336
GVST_I
0.1uF
50V
C1352
0.047uF
50V
C1319
VCC_LCM
(+3.3V)
0.1uF
16V
C1373
READY
10uF
10V
C1314
VDD_ODD
004:L37;004:AP11
33
R1342
GMA16
004:E28;004:AC14
VGH_I
VLCD_LCM
(+12V)
0
R1354
GMA9
0
R1353
RMCLKP
001:AU37
VDD_LCM_O
(+16V)
33
R1343
0
R1337
FRC_SCL
GMA3
1uF
50V
C1374
KDS226
D1301
A
AC
C
GCLK6_I
VDD_ODD
004:E36;004:AP11
GCLK5_I
LMLV7P
001:BB25
GVDD_EVEN_I
VLCD_LCM
(+12V)
15pF
50V
OPT
C1344
CLK3
004:L36;004:AP10
0.01uF
25V
C1303
LMLV8N
001:BE24
0
OPT
R1370
0.1uF
16V
C1364
READY
V C
O M
GCLK3_I
1/8W
47K
1%
R1373
GCLK5
RMLV5N
001:AV37
FREQ
004:AU4
22UH
L1300
0.047uF
50V
OPT
C1317
0.1uF
16V
C1362
READY
VDD_LCM_PG
(+16V)
GCLK4_I
1/10W
0
5%
R1320
GMA10
004:L29;004:T10
LMLV8P
001:BE24
GMA15
004:L29;004:AC12
1/10W
39K
1%
R1325
18K
R1309
CLK1
004:E38;004:AP9
1/8W
47K
1%
R1372
CLK5
1/10W
18K
1%
R1376
FRC_SDA
RMLV3N
001:AU37
22uF
25V
C1336
1/10W
18K
1%
R1374
VST
004:E36;004:AP12
P_VCOM
VDD_ODD
15pF
50V
OPT
C1343
1/10W
910
1%
R1375
LMCLKN
001:BB26
1uF
50V
C1376
VDD_LCM
(+16V)
LMLV0N
001:BB28
15pF
50V
OPT
C1346
1/16W
1.2K
5%
OPT
R1351
LMLV2N
001:BB27
0.
47
uF
50V
C1326
1/16W
4.7K
5%
R1359
OPT
LMLV1N
001:BB27
VLCD_LCM
(+12V)
GMA7
004:E35;004:T12
LMLV3N
001:BB27
1/16W
1K
5%
R1344
GVDD_ODD_I
0.1uF
50V
C1315
FB
004:AG33
0.47uF
50V
C1329
0.1uF
50V
C1367
1/16W
10K
5%
R1356
CLK1
004:L37;004:AP9
GMA16
004:L28;004:AC14
0
R1328
0.01uF
25V
C1307
GD
004:AT36
VDD_LCM
(+16V)
10uF
35V
C1334
DPM
001:BB21;004:U35;004:X29
LMLV6P
001:BB26
GMA1
004:L35;004:T15
1/10W
10K
5 %
R1352
VDD_LCM
(+16V)
15pF
50V
OPT
C1348
GVDD_EVEN_I
RMLV6N
001:AV37
1/8W
10K
1 %
R1319
RSR025P03
Q1300
Q1300
S
D
G
VGL_I
CLK6
GMA6
004:L35;004:T13
22uF
25V
C1308
10uF
10V
C1353
KDS226
D1300
A
AC
C
22uF
16V
C1341
GCLK1_I
VDD_LCM
(+16V)
GMA6
KP20A-60S-0.5SH
P1301
1
GND
2
LTD
3
VDD
4
VDD
5
VDD
6
GND
7
VCC
8
VCC
9
GND
10
GMA1
11
GMA2
12
GMA3
13
GMA4
14
GMA5
15
GMA6
16
GMA7
17
GMA9
18
GOE
19
GSP_Rev
20
GSC
21
H-CONV
22
GSP
23
POL
24
SOE
25
GND
26
RMLV8N
27
RMLV8P
28
RMLV7N
29
RMLV7P
30
RMLV6N
31
RMLV6P
32
RMLV5N
33
RMLV5P
34
RMCLKN
35
RMCLKP
36
RMLV3N
37
RMLV3P
38
RMLV2N
39
RMLV2P
40
RMLV1N
41
RMLV1P
42
RMLV0N
43
RMLV0P
44
GND
45
OPT_N
46
OPT_P
47
GMA10
48
GMA12
49
GMA13
50
GMA14
51
GMA15
52
GMA16
53
GMA17
54
GMA18
55
VCOMROUT
56
VCOMFB
57
VGH
58
GND
59
VGL
60
GND
61
GND
GMA15
GMA18
004:E28;004:AC15
RMLV3P
001:AU37
GMA1
RMLV0P
001:AS37
MBRA340T3G
40V
D1305
CLK5
004:L36;004:AP10
15pF
50V
OPT
C1345
P_VCOM
100
R1348
10nF 50V
C1333
TPS_DLY1
10pF
50V
OPT
C1357
RMLV1N
001:AT37
CLK4
004:L36;004:AP10
0.047uF
50V
C1311
VGL_I
(-5V)
15pF
50V
OPT
C1350
0
R1341
CLK6
004:E37;004:AP11
RMLV8N
001:BB30
VCOMROUT
004:L38
1uF
25V
C1327
10nF 50V
C1332
GCLK4_I
GMA4
004:L35;004:T13
EN1
004:AT31
EN2
004:BD4
22uF
25V
C1337
SOE_R
004:K18
GMA13
004:L29;004:AC12
0.1uF
16V
C1365
GMA12
0.047uF
50V
OPT
C1320
CLK6
004:L36;004:AP11
0.1uF
16V
C1306
EN2
001:BB21;004:X29;004:BC4
TPS65161PWPR
IC1300
3
OS
2
COMP
4
SW_1
1
FB
6
PGND_1
5
SW_2
7
PGND_2
8
SUP
9
EN2
10
DRP
11
DRN
12
FREQ
13
FBN
14
FBP
15
FBB
16
EN1
17
BOOT
18
SWB
19
NC
20
VINB_1
21
VINB_2
22
AVIN
23
GND
24
REF
25
DLY1
26
DLY2
27
GD
28
SS
MAX17108
IC1302
1
A9
3
A7
7
A3
9
A1
10
G O
N 1
11
G O
F F
12
G O
N 2
13
Y1
14
Y2
15
Y3
16
Y4
17
Y5
18
Y6
19
Y7
20
Y8
21
Y9
22
Y10
23
G N
D
24
A V
D D
25
V C
O M
26
N E
G
27
POS
28
A10
5
A5
8
A2
6
A4
4
A6
2
A8
29
V G
L
10uF
35V
C1354
18K
R1314
47K
R1316
4.7k-ohm
TH1300
[PWM IC ENABLE]
[GIP LEVEL SHIFTER]
[SIGNAL FILTER]
[RIGHT FFC CONNECTOR]
I2C Slave Address : 0x74
[LEFT FFC CONNECTOR]
[P-GAMMA BLOCK]
GIP (for 37)
[PUSH-PULL]
GIP (for 37)
[Power Block]
THERMAL PAD : VGL
C
2009
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