LG 42LH40 (CHASSIS:LA92G) 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.
RMLV1N
11:Z37
0
R1428
OPT
GMA10
G16;M16
VGL
(-5V)
GMA13
G16;Y6
0.1uF
50V
C1452
0
R1417
VGHM
(+24V)
0
R1419
GMA18
G15;Y10
VDD_LCM
(+16V)
DPM
11:AJ22;U20
GMA4
M23;O8
VDD_LCM
(+16V)
POL
11:AJ23;G21
10uF
10V
C1423
0
OPT
R1416
100pF
50V
C1410
GMA3
G23;M23
GMA10
M16;O5
0
OPT
R1437
0.1uF
50V
C1411
LTD_R
AG3
VDD_LCM
(+16V)
22000pF
50V
C1431
GMA15
M15;Y7
RMLV2P
11:Z37
RMLV5N
11:AA37
VLCD_LCM
(+12V)
P_VCOM
U21;Y10
LMLV5N
11:AG27
GMA16
G15;M15
VDD_LCM_PG
(+16V)
10K
OPT
R1402
10uF
25V
C1455
FLK
11:AG30
H_CONV
11:AJ22;G21
BAV99RWT1
D1400
GSC
11:AJ24;M21
VCC_LCM
(+3.3V)
GMA15
G16;M15
1uF
25V
C1400
VDD_LCM_PG
(+16V)
0
OPT
R1418
3.9K
1%
R1441
56K
1%
R1421
VLCD_LCM_OUT
(+16V)
SOE_L
11:AW15
68pF
50V
C1415
LMLV8N
11:AJ25
0.047uF
50V
C1426
OPT
GSP
11:AJ24;M21
RMLV7N
11:AB37
GMA12
G16;Y6
FRC_SDA
1:AI6;11:W37;11:AU38
22UH
L1300
0
R1436
GMA14
G16;Y7
RMLV0P
11:Y37
GMA1
G24;O10
RMLV7P
11:AB37
VGH_M
(+24V)
VLCD_LCM_OUT
(+16V)
GMA13
M15;Y6
GMA17
M15;Y9
LMLV1N
11:AG28
GMA16
G15;Y9
0.1uF
16V
C1402
LMCLKN
11:AG27
VGH
(+24V)
RMLV2N
11:Z37
GMA12
G16;M16
VCOMR_OP
AA24
1uF
25V
C1421
GMA10
G16;O5
10K
OPT
R1409
RMLV6N
11:AB37
VLCD_LCM
(+12V)
RMCLKP
11:AA37
33
R1400
0
OPT
R1444
VLCD_LCM
(+12V)
GMA5
G23;M22
VGL
(-5V)
VCC_LCM
(+3.3V)
GMA6
M22;O7
0.1uF
50V
C1409
VCOM_L
G24
DPM
11:AJ22;AI20
OPT_N
11:AG30;M16
0
R1440
GMA7
G23;O6
VCOM_L
AG5
7.5K
R1446
10uF
10V
C1424
GMA14
M15;Y7
RMLV3N
11:Z37
0.1uF
16V
C1456
GSC
11:AJ24;G22
LTD_L
G15
GMA18
G15;M14
5.6K
R1443
0.1uF
16V
C1408
VGHM
(+24V)
OPT_P
11:AG30
RMLV0N
11:Y37
OPT_N
11:AG30;G17
GMA9
G22;M22
GMA16
M15;Y9
GMA7
M22;O6
LTD_L
AK3
10K
OPT
R1401
LMLV7N
11:AG26
VDD_LCM
(+16V)
0
OPT
R1439
33
R1410
GMA6
G23;O7
P_VCOM
Y10;AK6
0.1uF
50V
C1405
RMLV5P
11:AA37
GMA1
M23;O10
LMLV2P
11:AG28
RMCLKN
11:AA37
VCOM_R
M14
0
R1429
22000pF
50V
C1432
GSP_R
11:AJ24;M21
VCOML_OP
U20
GMA9
M22;O5
GSP_R
11:AJ24;G22
LMLV3N
11:AG27
VCC_LCM
(+3.3V)
5.1K
R1447
VCOMR_OP
AK7
0.01uF
25V
C1407
RMLV1P
11:Y37
RMLV8P
11:AG31
10K
OPT
R1406
LMLV0N
11:AG29
GMA9
G22;O5
VCC_LCM
(+3.3V)
GOE
11:AJ25;M22
GMA2
G24;M23
GMA2
G24;O9
GMA5
M22;O8
GMA15
G16;Y7
0
R1438
SOE_R
11:AW15
VLCD_LCM_OUT
(+16V)
VDD_LCM
(+16V)
VCOM_R
AG6
LMLV5P
11:AG27
GMA7
G23;M22
FRC_SCL
1:AI6;11:W37;11:AU38
VGH_M
(+24V)
RMLV6P
11:AB37
GMA14
G16;M15
GMA12
M16;Y6
RMLV3P
11:Z37
LMLV7P
11:AG26
BAV99RWT1
D1401
GMA3
M23;O9
GMA6
G23;M22
GMA4
G23;M23
0
R1403
1uF
25V
C1422
LMCLKP
11:AG27
VGL
(-5V)
LMLV2N
11:AG28
GMA17
G15;M15
VCOM_FB
G24
82K
R1407
GMA18
M14;Y10
1uF
25V
C1404
GMA3
G23;O9
VGH_M
(+24V)
5.6K
R1434
GOE
11:AJ25;G22
VCOM_FB
AA24
LMLV0P
11:AG29
RMLV8N
11:AG31
VGH
(+24V)
GMA1
G24;M23
22UH
L1301
P_VCOM
U21;AK6
4.7K
1%
R1432
POL
11:AJ23;M21
22000pF
50V
C1436
GMA13
G16;M15
10uF
10V
C1418
GMA4
G23;O8
LMLV6P
11:AG26
LMLV3P
11:AG28
LMLV8P
11:AJ25
0.1uF
16V
C1406
LMLV1P
11:AG28
H_CONV
11:AJ22;M21
GSP
11:AJ24;G21
LTD_R
M23
GMA17
G15;Y9
VCOML_OP
AK4
1K
R1442
LMLV6N
11:AG26
0.01uF
25V
C1403
10uF
25V
C1453
GMA2
M23;O9
GMA5
G23;O8
0.1uF
16V
C1427
680
R1411
680
R1412
330K
1%
R1408
180
1%
R1404
0.47uF
50V
C1412
150K
1%
R1414
22K
1%
R1413
11K
1%
R1415
0.47uF
50V
C1416
0.47uF
50V
C1419
1K
1%
R1423
0.47uF
50V
C1417
120K
1%
R1420
100K 1%
R1425
0.22uF
16V
C1425
1.3K
1%
R1430
470pF
50V
C1428
470pF
50V
C1460
OPT
22uF
16V
C1439
22uF
16V
C1445
10uF
16V
OPT
C1450
1uF
25V
C1429
VLCD_LCM
(+12V)
820pF
50V
C1433
4.7K
1%
R1435
24K
1%
R1427
47K
1%
R1426
0
R1448
OPT
0
R1449
10uF
35V
C1438
10uF
35V
C1444
0.1uF
50V
C1434
10uF
35V
C1437
10uF
35V
C1442
10uF
35V
C1443
10uF
35V
C1448
10uF
35V
C1451
22uF
25V
C1430
22uF
25V
C1435
10uF
35V
C1413
10uF
35V
C1414
0.1uF
50V
C1401
18K
R1405
18K
R1450
22uF
25V
C1458
22uF
25V
C1459
10
R1445
0.1uF
50V
C1461
KP20A-60S-0.5SH
P1400
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
KP20A-60S-0.5SH
P1401
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
TPS65162RGZR
IC1300
1
POS1
2
OUT1
3
VDD
4
CE
5
VFLK
6
VDPM
7
RE
8
VGHM
9
VGH
10
FBP
11
GND
12
DRVP
13
SUP
14
D R
V N
15
A G
N D
16
F B
N
17
REF
18
D L
Y 1
19
NC_1
20
NC_2
21
FBB
22
C B
O O
T
23
SWB_1
24
SWB_2
25
PVIN_1
26
PVIN_2
27
VIN
28
FREQ
29
DLY2
30
SS
31
VC
32
EN2
33
EN1
34
PGND1
35
PGND2
36
PGND3
37
SW_1
38
SW_2
39
SWI
40
NC_3
41
FB
42
S W
O
43
AVIN
44
N E
G 2
45
POS2
46
O U
T 2
47
O G
N D
48
N E
G 1
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
MBRA340T3G
40V
D1403
MBRA340T3G
40V
D1402
OPT_N
GND
GND
LMLV3P
LMLV5N
RMLV6P
GMA9
LMLV3N
[LEFT FFC CONNECTOR]
NON GIP(for 42", 47")
POL
VDD
GSC
RMLV5P
VCC
GMA15
OPT_N
GMA14
GMA7
LMLV6P
GMA2
RMLV1P
GMA3
GND
GND
RMLV2P
GOE
GMA10
GMA5
VDD
LMCLKP
GND
GND
LTD_R
[P-GAMMA BLOCK]
LMLV0P
GMA14
GMA12
GND
LMLV8P
GMA5
GSP_R
GND
LTD_L
VDD
LMLV8N
GMA3
SOE_L
RMLV8N
H_CONV
VCOM_L
RMLV5N
VGH
RML0P
RMLV6N
GND
GMA1
VCC
GND
VDD
GMA13
GMA15
GSP
RMCLKP
[Power Block]
VGL
GMA6
[RIGHT FFC CONNECTOR]
NON GIP(for 42", 47")
GMA7
RMLV2N
H-CONV
GMA2
POL
GAM16
LMLV1P
GND
GMA4
RMLV7N
I2C Slave Address : 0x74
RMLV7P
GMA1
GMA17
SOE
VGH_M
RML0N
GMA4
OPT_P
GSC
GMA16
GMA9
LMLV2P
GND
RMCLKN
VDD
LMLV6N
GSP
LMLV7P
LMLV1N
GND
GSP_Rev
LMLV7N
VDD
GOE
LMLV2N
LMLV5P
GMA10
RMLV3N
LMLV0N
GND
GMA18
RMLV1N
RMLV8P
VGL
GAM18
GND
VCC
GMA13
GMA6
VCC
VCOM_FB
RMLV3P
NC
GMA12
LMCLKN
GAM17
VCOM_R
P-GAMMA/ MINI LVDS DC-DC CONVERTER
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.
BG2012B080TF
L1202
CDS3C05HDMI1
5.6V
ZENER D1203
10K
R1223
OPT
0
R1220
5.6B
D1240
ZENER
1000pF
50V
OPT
C1248
+5V_EXT
ADMC5M03200L_AMODIODE
5.6V
D1233
OPT
SDA_SUB/AMP
001:AI5;006:D12
100
R1200
LED_MOVING/LED_R
001:AR32
USB_DM
001:AR34
5.6B
D1239
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1201
ZENER
5.6B
D1238
ZENER
+5V_ST
BG2012B080TF
L1204
CB3216PA501E
L1219
4.7K
R1227
10K
R1224
OPT
0
R1239
Except_LU30
10K
R1216
USB_DP
001:AR34
100pF
50V
C1207
+5V_USB_1
001:I2
+3.3V_ST
+3.3V_ST
120K
OPT
R1213
4.7K
R1219
OPT
+3.3V
47
R1217
SCL_SUB/AMP
001:AI5;006:D11
1000pF
50V
OPT
C1249
0
R1229
0
R1225
OPT
100
R1201
USB DOWN STREAM
KJA-UB-4-0004
JK1204
1
2
3
4
5
180
R1218
0
LU30 R1214
+5V_USB_1
001:I2
100uF
16V
C1209
BG2012B080TF
L1203
CB3216PA501E
L1201
0.1uF
16V
C1208
0.1uF
16V
C1200
1000pF
50V
C1205
CB3216PA501E
L1200
0.1uF
16V
C1202
IR
001:AB22;004:AD4
100
R1231
OPT
10K
R1228
USB_OCD
LED_MOVING/LED_R
001:AR32
1000pF
50V
C1201
0.1uF
C1203
ADMC5M03200L_AMODIODE
5.6V
D1202
ZENER
KEY1
001:AB23
0
R1230
+3.3V_ST
LED_B
12507WS-12L
P1200
1
SCL
2
SDA
3
GND
4
KEY1
5
KEY2
6
5V_ST
7
GND
8
WARM_ST
9
IR
10
GND
11
3.3V_ST
12
PWR_ON
13
GND
KEY2
001:AB23
4.7K
R1203
MIC2009YM6-TR
IC1202
3
ENABLE
2
GND
4
FAULT/
1
VIN
6
VOUT
5
ILIMIT
0.1uF
C1244
ENKMC2838-T112
D1204
A1
C
A2
LED_B
001:AR32
0.1uF
OPT
C1253
+3.3V_ST
0
R1222
0.1uF
C1204
4.7K
R1202
USB_CTL
10uF
10V
C1245
0
R1221
2SC3052
Q1201
E
B
C
ADMC5M03200L_AMODIODE
5.6V
D1232
OPT
USB JACK
USB +5V Over Current Protection --> USB Jack
[CONTROL IR & LED]
For testing LU30 & Small model
Pin to Pin Replacable with T-MIC2019YM6
USB
ETC SUB BOARD I/F
Jan., 2009
P/NO : MFL41946808
Jan., 2009
P/NO : MFL41946808