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.
I2S_MCLK
SPK_L+
4.7K
R663
I2S_SCK
0.01uF
C671
M_SCL
0.1uF
C643
1uF
C614
0
R676
+1.8V_DVDD
0.01uF
C672
0.01uF
C647
I2S_WS
1000pF
C603
22000pF
C616
+1.8V_AVDD
SPK_R+
0.1uF
C607
SPK_L+
SPK_L-
4.7K
R628
0.1uF
C629
100
R603
0.1uF
C610
100
R601
390pF
C621
SPK_L-
0.1uF
C644
0.1uF
C626
+1.8V
1000pF
C606
+1.8V_AVDD
0
R656
READY
3.3
R604
SPK_R+
+1.8V_DVDD
0.1uF
C605
+1.8V_DVDD
MULTI_PW_SW
0.1uF
C602
0.47uF
C673
0
R673
390pF
C630
100
R602
SPK_R-
1uF
C624
22000pF
C625
4.7K
R623
0.01uF
C648
0.1uF
C615
0.1uF
C669
+16V_NTP
1000pF
C651
22000pF
C611
100pF
C601
22000pF
C623
0.01uF
C613
0.1uF
C617
+16V_NTP
390pF
C619
+1.8V_AVDD
SPK_R-
0.47uF
C632
1uF
C608
M_SDA
0
R678
SW_RESET
1uF
C618
0
R677
3.3K
R600
4.7K
R667
0.1uF
C637
I2S_SDO
390pF
C634
+3.3V_MULTI_MST
+3.3V_MULTI_AUD
+3.3V_MULTI_AUD
3.3
R626
3.3
R635
3.3
R625
3.3
R671
12
R605
12
R606
12
R608
12
R610
12
R621
12
R658
12
R622
12
R624
10uF
16
V
C600
10uF
16
V
C604
68uF
35
V
C622
68uF
35
V
C620
68uF
35
V
C612
68uF
35
V
C627
10uF
16
V
C609
NTP-3100L
EAN60664001
IC600
1
BST1A
2
VDR1A
3
RESET
4A
D
5
DVSS_1
6
VSS_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LFM
12
AVDD_PLL
13
DVDD_PLL
14
TEST0
15
DVSS_2
16
DVDD
17
SDATA
18
WCK
19B
CK
20
SDA
21
SCL
22
MONITOR_0
23
MONITOR_1
24
MONITOR_2
25
FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
120-ohm
L601
120-ohm
L605
120-ohm
L606
RT1C3904-T112
Q601
READY
E
B
C
10K
R611
READY
10K
READY
R607
+3.3V_MST
0
R609
0
R682
READY
MULTI_PW_SW
SMAW250-04Q
P600
1
2
3
4
5
33pF
50V
READY
C639
33pF 50V
READY
C638
AD-8770
EAP60684501
L607
2S
1S
1F
2F
AD-8770
EAP60684501
L603
2S
1S
1F
2F
22K
READY
R612
6800pF
C701
5.6K
R705
5.6K
R706
LM324D
IC701
3
INPUT1+
2
INPUT1-
4
VCC
1
OUT1
6
INPUT2-
5
INPUT2+
7
OUT2
8
OUT3
9
INPUT3-
10
INPUT3+
11
GND
12
INPUT4+
13
INPUT4-
14
OUT4
1K
R703
MNT_L_AMP
BLT_DP
+12V_AUDIO
RT1C3904-T112
Q700
E
B
C
MNT_LOUT
MNT_ROUT
0
R744
0.1uF
C709
0.01uF
C704
4.7K
R700
+3.3V_MULTI_MST
0
R733
RT1C3904-T112
Q701
E
B
C
6.8K
R708
0
R734
+12V_AUDIO
6.8K
R709
10K
R707
33pF
C703
1K
R702
12507WR-06L
P700
1
2
3
4
5
6
7
4.7K
R701
BLT_DN
0.1uF
C707
+12V_AUDIO
33pF
C702
6800pF
C700
MNT_R_AMP
10K
R704
SPK_L-
EAX58298501 Mstar LCD LH70
4 9
AUDIO
H6 LH70
2008/09/20
AUDIO MAIN AMP
AMP :GAIN X 4
Chinese Hotel & BLUETOOTH Option(LH70)
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