Read LG 42LH90QR (CHASSIS:LP91C) Service Manual online
100
R1336
10K
R1394
READY
100
R1347
22uF
C1318
0
R1322
+3.3V_DIMMING
0
READY
R1378
0
READY
R1377
4.7K
READY
R1358
LVDS_SEL
+5V_MULTI
4.7K
R1321
DIMMING_SCL
+3.3V_DIMMING
100
R1343
MDS61887701
READY
M8
0.1uF
C1326
0
R1407
READY
100
R1306
+1.8V_DIMMING
TMS
0.1uF
C1342
DIMMING_WP
0
R1325
M_SDA
+3.3V_MULTI_MST
TF05-51S
P1301
1
VCC
2
VCC
3
VCC
4
VCC
5
NC
6
GND
7
GND
8
GND
9
GND
10 GND
11 CH2_E+
12 CH2_E-
13 CH2_D+
14 CH2_D-
15 GND
16 CH2_CLK+
17 CH2_CLK-
18 GND
19 CH2_C+
20 CH2_C-
21 CH2_B+
22 CH2_B-
23 CH2_A+
24 CH2_A-
25 BIT_SEL
26 GND
27 CH1_E+
28 CH1_E-
29 CH1_D+
30 CH1_D-
31 GND
32 CH1_CLK+
33 CH1_CLK-
34 GND
35 CH1_C+
36 CH1_C-
37 CH1_B+
38 CH1_B-
39 CH1_A+
40 CH1_A-
41 GND
42 OPC_EN
43 OPC_OUT
44 PWM_IN
45 LVDS_SEL
46 NC
47 NC
48 NC
49 NC
50 NC
51 GND
52
GND
0.1uF
C1334
100
R1361
10
0
READY
R1342
24LC32AT-I/SNG
IC1306
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
M_SCL
4.7K
R1330
100
R1345
+3.3V_DIMMING
LED_DEMO
LED_S_SCLK
MDS61887701
READY
M9
0
R1406
READY
0.1uF
C1344
+1.8V_DIMMING_RX
100
R1359
0
R1408
READY
0
R1400
22uF
C1317
0
R1357
READY
+3.3V_DIMMING
0 READY
R1318
+1.8V_DIMMING_PLL
100
R1346
0.1uF
C1320
+3.3V_DIMMING
0.1uF
C1311
DIMMING_RESET
CB3216PA501E
L1306
0
R1402
EEPROM_A1
DIMMING_SCL
0
R1413
100 READY
R1367
1000pF
C1347
100
R1348
TDI
0
READY
R1332
0.1uF
C1303
0 READY
R1388
LG5110
IC1304
1
DIG3.3_1
2
DIG1.8_1
3
GND_1
4
RXANAGND_1
5
R2A1M
6
R2A1P
7
R2B1M
8
R2B1P
9
R2C1M
10
R2C1P
11
RXANA1.8_1
12
R2CLK1M
13
R2CLK1P
14
R2D1M
15
R2D1P
16
R2E1M
17
R2E1P
18
RXANAGND_2
19
R2A2M
20
R2A2P
21
R2B2M
22
R2B2P
23
R2C2M
24
R2C2P
25
RXANA1.8_2
26
R2CLK2M
27
R2CLK2P
28
R2D2M
29
R2D2P
30
R2E2M
31
R2E2P
32
RXANAGND_3
33
DIG3.3_2
34
DIG1.8_2
35
GND_2
36
TDO
37
TRST_N
38
EEPROM_A1_TDI
39
TMS
40
TCK
41
TMODE[0]
42
TMODE[1]
43
TMODE[2]
44
SCLKO
45
SCLKI
46
S_SCLK
47
S_MOSI
48
S_VS
49
S_SCLKN
50
S_SCLKP
51
S_MOSIN
52
S_MOSIP
53
T2E2P
54
T2E2N
55
T2D2P
56
T2D2N
57
TXANAGND_1
58
TXANA3.3_1
59
T2CLK2P
60
T2CLK2N
61
T2C2P
62
T2C2N
63
TXANA3.3_2
64
T2B2P
65
T2B2N
66
T2A2P
67
T2A2N
68
TXANAGND_2
69
TXANA3.3_3
70
T2E1P
71
T2E1N
72
T2D1P
73
T2D1N
74
TXANA3.3_4
75
T2CLK1P
76
T2CLK1N
77
T2C1P
78
T2C1N
79
TXANAGND_3
80
TXANA3.3_5
81
T2B1P
82
T2B1N
83
T2A1P
84
T2A1N
85
TXANA3.3_6
86
TXANAGND_4
87
GND_3
88
DIG1.8_3
89
DIG3.3_3
90
TXANAGND_5
91
TXANA3.3_7
92
TXANAGND_6
93
TXANA3.3_8
94
REXT
95
T1E2P
96
T1E2N
97
T1D2P
98
T1D2N
99
TXANAGND_7
100
TXANA3.3_9
101
T1CLK2P
102
T1CLK2N
103
T1C2P
104
T1C2N
105
TXANA3.3_10
106
T1B2P
107
T1B2N
108
T1A2P
109
T1A2N
110
TXANAGND_8
111
TXANA3.3_11
112
T1E1P
113
T1E1N
114
T1D1P
115
T1D1N
116
TXANA3.3_12
117
T1CLK1P
118
T1CLK1N
119
T1C1P
120
T1C1N
121
TXANAGND_9
122
TXANA3.3_13
123
T1B1P
124
T1B1N
125
T1A1P
126
T1A1N
127
M_SCLKN
128
M_SCLKP
129
M_MOSIN
130
M_MOSIP
131
PLLGND
132
PLL1.8
133
M_SCLK
134
M_MOSI
135
M_VS
136
EEPROM_NA
137
EEPROM_WP
138
M_SCL
139
M_SDA
140
S_SDA
141
S_SCL
142
PORES_N
143
XTALI
144
XTALO
145
DIG1.8_4
146
GND_4
147
DIG3.3_4
148
RXANAGND_4
149
R1A1M
150
R1A1P
151
R1B1M
152
R1B1P
153
R1C1M
154
R1C1P
155
RXANA1.8_3
156
R1CLK1M
157
R1CLK1P
158
R1D1M
159
R1D1P
160
R1E1M
161
R1E1P
162
RXANAGND_5
163
R1A2M
164
R1A2P
165
R1B2M
166
R1B2P
167
R1C2M
168
R1C2P
169
RXANA1.8_4
170
R1CLK2M
171
R1CLK2P
172
R1D2M
173
R1D2P
174
R1E2M
175
R1E2P
176
RXANAGND_6
100
R1344
0
R1331
0
R1405
READY
120-ohm
L1307
MDS61887701
GAS
M6
0.1uF
C1348
EEPROM_A1
0.1uF
C1322
LED_S_MOSI
0
R1411
READY
0.1uF
C1321
LED_M_MOSI
0
R1320
0
R1396
READY
LED_M_VS
100uF 16V
C1302
LED_M_MOSI
+1.8V_DIMMING_RX
12507WS-08L
P1304
1 GND
2 GND
3 SCLK
4 GND
5 MOSI
6 RESERVED
7 RESERVED
8 VSYNC
9
GND
0.1uF
C1304
4.7K
READY
READY
R1416
+1.8V_DIMMING_PLL
100
R1340
0.1uF
C1337
100
R1314
0.1uF
C1333
100 READY
R1364
100
R1307
120-ohm
L1302
100
R1350
120-ohm
L1304
0
R1398
66.5
R1303
DIMMING_WP
+3.3V_DIMMING
100
R1316
0
R1403
1M
R1352
0
R1329
0
R1412
0
R1353
0
R1362
LED_M_SCLK
100
R1360
LED_S_MOSI
0
READY
R1414
0
R1327
0.1uF
C1329
0
R1404
+3.3V_DIMMING_TX
100
R1313
0.1uF
C1327
100 READY
R1365
0.1uF
C1309
10uF
C1346
100
R1312
100
R1311
0.1uF
C1314
TF05-41S
P1302
1
GND
2
GND
3
CH4_E+
4
CH4_E-
5
CH4_D+
6
CH4_D-
7
GND
8
CH4_CLK+
9
CH4_CLK-
10 GND
11 CH4_C+
12 CH4_C-
13 CH4_B+
14 CH4_B-
15 CH4_A+
16 CH4_A-
17 GND
18 GND
19 CH3_E+
20 CH3_E-
21 CH3_D+
22 CH3_D-
23 GND
24 CH3_CLK+
25 CH3_CLK-
26 GND
27 CH3_C+
28 CH3_C-
29 CH3_B+
30 CH3_B-
31 CH3_A+
32 CH3_A-
33 GND
34 NC
35 NC
36 NC
37 NC
38 NC
39 NC
40 NC
41 GND
42
GND
20pF
50V
C1330
0.1uF
C1310
100
R1310
100
R1309
AZ7027RTRE1
IC1305
2
GND
3
OUT
1
VCC
DIMMING_SDA
56
R1302
4.7K
R1368
DIMMING_SDA
LED_S_VS
MDS61887701
READY
M10
100
R1337
0
R1395
READY
0
R1319
TMS
0.1uF
C1335
0
R1401
0.1uF
C1328
0.1uF
C1324
0
R1409
READY
10
0
READY
R1341
4.7K
R1417
+3.3V_DIMMING
0 READY
R1328
TDI
2K
READY
R1356
22uF
C1319
0
R1323
0
R1324
LED_M_SCLK
12507WS-10L
READY
P1305
1 NC
2 NC
3 GND
4 GND
5 SCLK
6 GND
7 MOSI
8 RESERVED
9 RESERVED
10 VSYNC
11
0.1uF
C1325
10K
R1393
READY
+3.3V_DIMMING_TX
10uF
C1301
0.1uF
C1349
TCK
1K
R1415
READY
120-ohm
L1305
0.1uF
C1341
100
R1354
LED_S_SCLK
TDO
MDS61887701
READY
M7
0.1uF
C1313
100
R1315
0
R1371
0
R1410
READY
56
R1301
10
0
READY
R1338
10K
R1391
+3.3V_DIMMING
100
R1335
22uF
C1315
0
READY
R1363
10K
READY
READY
R1397
0 READY
R1304
100
R1355
LED_M_VS
100
R1308
0.1uF
C1323
10
0
READY
R1339
0.1uF
C1345
22uF
C1316
100
R1351
0
R1399
0
READY
R1372
25MHz
X1301
0.1uF
C1332
0
R1326
100
R1317
+1.8V_DIMMING
47K
R1369
100
R1334
0.1uF
C1339
TCK
0.1uF
C1336
AZ1085S-ADJTR/E1
IC1302
1
ADJ/GND
2
OUTPUT
3
INPUT
100 READY
R1366
LED_S_VS
10K
R1392
100
R1333
0.1uF
C1312
20pF
50V
C1331
0.1uF
C1340
4.7K
R1305
AZ1117D-3.3TRE1
IC1301
1
ADJ/GND
2
OUTPUT
3
INPUT
+3.3V_DIMMING
100
R1349
+12V_LCD
0.1uF
C1338
TDO
+3.3V_DIMMING
22
R1390
0.1uF
C1343
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.
LVDS_CH2_E_P
LVDS_CH2_E_N
LVDS_CH2_D_P
LVDS_CH2_D_N
LVDS_CH2_C_P
LVDS_CH2_C_N
LVDS_CH2_B_P
LVDS_CH2_B_N
LVDS_CH2_A_P
LVDS_CH2_A_N
LVDS_CH1_CLK_N
LVDS_CH1_CLK_P
LVDS_CH1_E_P
LVDS_CH1_E_N
LVDS_CH1_D_P
LVDS_CH1_D_N
LVDS_CH1_C_P
LVDS_CH1_C_N
LVDS_CH1_B_P
LVDS_CH1_B_N
LVDS_CH1_A_P
LVDS_CH1_A_N
LVDS_CH2_CLK_P
LVDS_CH2_CLK_N
LVDS_CH4_E_P
LVDS_CH4_E_N
LVDS_CH4_D_N
LVDS_CH4_D_P
LVDS_CH4_CLK_N
LVDS_CH4_CLK_P
LVDS_CH4_C_N
LVDS_CH4_C_P
LVDS_CH4_B_N
LVDS_CH4_B_P
LVDS_CH4_A_N
LVDS_CH4_A_P
LVDS_CH3_E_N
LVDS_CH3_E_P
LVDS_CH3_D_N
LVDS_CH3_D_P
LVDS_CH3_CLK_N
LVDS_CH3_CLK_P
LVDS_CH3_C_N
LVDS_CH3_C_P
LVDS_CH3_B_N
LVDS_CH3_B_P
LVDS_CH3_A_N
LVDS_CH3_A_P
LVDS_CH1_A_N
LVDS_CH1_A_P
LVDS_CH1_B_N
LVDS_CH1_B_P
LVDS_CH1_A_P
LVDS_CH1_B_N
LVDS_CH1_B_P
LVDS_CH1_C_N
LVDS_CH1_C_P
LVDS_CH1_CLK_N
LVDS_CH1_CLK_P
LVDS_CH1_C_P
LVDS_CH1_CLK_N
LVDS_CH1_CLK_P
LVDS_CH1_D_N
LVDS_CH1_D_P
LVDS_CH1_E_N
LVDS_CH1_E_P
LVDS_CH1_D_P
LVDS_CH1_E_N
LVDS_CH1_E_P
LVDS_CH2_A_N
LVDS_CH2_A_P
LVDS_CH2_B_N
LVDS_CH2_B_P
LVDS_CH2_A_P
LVDS_CH2_B_N
LVDS_CH2_B_P
LVDS_CH2_C_N
LVDS_CH2_C_P
LVDS_CH2_CLK_N
LVDS_CH2_CLK_P
LVDS_CH2_C_P
LVDS_CH2_CLK_N
LVDS_CH2_CLK_P
LVDS_CH2_D_N
LVDS_CH2_D_P
LVDS_CH2_E_N
LVDS_CH2_E_P
LVDS_CH2_D_P
LVDS_CH2_E_N
LVDS_CH2_E_P
LVDS_CH3_A_N
LVDS_CH3_A_P
LVDS_CH3_B_N
LVDS_CH3_B_P
LVDS_CH3_C_N
LVDS_CH3_C_P
LVDS_CH3_CLK_N
LVDS_CH3_CLK_P
LVDS_CH3_D_N
LVDS_CH3_D_P
LVDS_CH3_E_N
LVDS_CH3_E_P
LVDS_CH4_A_N
LVDS_CH4_A_P
LVDS_CH4_B_N
LVDS_CH4_B_P
LVDS_CH4_C_N
LVDS_CH4_C_P
LVDS_CH4_CLK_N
LVDS_CH4_CLK_P
LVDS_CH4_D_N
LVDS_CH4_D_P
LVDS_CH4_E_N
LVDS_CH4_E_P
URSA_C+[0]
URSA_C-[0]
URSA_C+[1]
URSA_C-[1]
URSA_C+[2]
URSA_C-[2]
URSA_CCK+
URSA_CCK-
URSA_C+[3]
URSA_C-[3]
URSA_C+[4]
URSA_C-[4]
URSA_D+[0]
URSA_D-[0]
URSA_D+[1]
URSA_D-[1]
URSA_D+[2]
URSA_D-[2]
URSA_DCK+
URSA_DCK-
URSA_D+[3]
URSA_D-[3]
URSA_D+[4]
URSA_D-[4]
URSA_B-[4]
URSA_B+[4]
URSA_B-[3]
URSA_B+[3]
URSA_BCK-
URSA_BCK+
URSA_B-[2]
URSA_B+[2]
URSA_B-[1]
URSA_B+[1]
URSA_B-[0]
URSA_B+[0]
URSA_A-[4]
URSA_A+[4]
URSA_A-[3]
URSA_A+[3]
URSA_ACK-
URSA_ACK+
URSA_A-[2]
URSA_A+[2]
URSA_A-[1]
URSA_A+[1]
URSA_A-[0]
URSA_A+[0]
22
R1389
12507WS-10L
P1303
READY
1
2
3
4
5
6
7
8
9
10
11
JTP-1127WEM
SW1301
1
2
4
3
AFLC_EN
0 READY
R1387
0 VESA
R1384
4.7K
JEIDA
R1382
+3.3V_DIMMING
E-DIM
22
R1376
0 READY
R1386
OPC_OUT1
22
R1375
0
R1381
RT1C3904-T112
Q1301
READY
E
B
C
0 READY
R1374
+3.3V_MULTI_MST
470
R1373
READY
22
READY
R1370
OPC_EN
OPC_OUT2
22
READY
R1380
0
R1385
0
R1383
READY
4.7K
R1379
+3.3V_DIMMING
120-ohm
L1301
0.1uF
C1307
0.1uF
C1308
120-ohm
L1303
+1.8V_DIMMING
MK2302S-01LFTR
IC1307
3 GND
2 ICLK
4 S0
1 FBIN
5
S1
6
CLK1
7
VDD
8
CLK2
110
R1420
0.1uF
C1350
500
L1308
+6.8V_DIMMING
100uF
16V
C1351
AP1117EG-13
IC1303
1
ADJ/GND
2 OUT
3
IN
330
R1419
0
R1418
READY
0
R1421
0
READY
READY
R1422
+5V_DIMMING
+5V_DIMMING
22uF
C1305
22uF
C1306
0 READY
R1423
0 R1300
4.7K
R1425
10K
R1426
DDC_WP
+3.3V_MULTI_MST
RT1C3904-T112
Q1302
E
B
C
0
READY
R1424
100pF
C1352
100pF
C1353
100pF
C1354
100pF
READY
READY
C1355
100pF
READY
READY
C1356
100pF
READY
READY
C1357
JTAG
LOCAL DIMMING DDC
SMD Gasket
2 0 0 9 / 0 3 / 0 4
EAX61087201
Mstar LCD LH90
Mstar LCD LH90
H6 LH90
1 2 1 2
LOCAL DIMMING
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
3
28
8
11
39
18
17
7
26
24
15
23
13
4
25
19
5
20
29
30
6
31
1
14
22
41
21
12
2
32
16
33
34
38
37
10
9
40
27
36
35
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