Read LG 42LH70YR (CHASSIS:LP91D) 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.
0.1uF
C411
+3.3V_MST
KEY2
120ohm
L403
2SC3052
Q404
IR-OUT
E
B
C
+5VST_MST
IR
+3.3V_MST
2SC3052
Q405
IR-OUT
E
B
C
KEY1
22
IR-OUT
R430
ZD401 ESD_READY
47pF
C403
4.7K
R420
0.1uF
C408
470pF
C404
+3.3V_MULTI_MST
120ohm
L406
10K
IR-OUT
R428
IR_OUT
500-ohm
L411
0
R403
4.7K
R421
SUB_SDA
0
R400
ZD400 ESD_READY
120ohm
L402
0.1uF
C407
READY
500-ohm
L410
ZD402 ESD_READY
SUB_SCL
+5VST_MST
10
K
IR-OUT
R427
47K
IR-OUT
R426
470pF
C412
+5VST_MST
10
K
IR-OUT
R429
0.1uF
C414
SPK_N
10K
R404
0
R401
READY
0
R402
47uF
16
V
C406
6630V90141J
P400
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
120-ohm
L404
120-ohm
L407
PC_AUD_R
PC_B
SIDE_LIN
S_VIDEO_DET
COMP2_L
COMP1_L
PC_AUD_L
M_SCL
TV_MAIN
COMP1_Y
MNT_LOUT
+5V_TUNER
COMP2_PR
MUTE_LINE
MNT_ROUT
IR_OUT
COMP2_R
COMP2_PB
DSUB_SDA
PC_G
PC_VS
COMP1_R
COMP2_Y
SIDE_V
SIDE_Y
+5V_MULTI
+3.3V_MST
CVBS_RIN
M_SDA
TXD
PC_R
COMP1_PR
PC_HS
SIDE_RIN
SIDE_C
502500-7011
P401
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
62
63
64
65
66
67
68
69
70
71
CVBS_VIN
MNT_VOUT
MAIN_SIF
RXD
DSUB_SCL
COMP1_PB
CVBS_LIN
CONTROL KEY
EAX58298501 Mstar LCD LH70
2008/09/20
H6 LH70
3 9
CONTROL & INTERFACE
INTERFACE
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