LG 37LH4000 / 37LH4010 / 37LH4020 (CHASSIS:LD91G) 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.
0.1uF
C729
50V
0.1uF
C749
50V
0.1uF
C735
50V
SPK_R+
AB11
R734
3.3
C732
22000pF
50V
C746 0.47uF 50V
SPK_R-
AB12
MS_LRCK
2:X21
AMP_VCC
0.01uF
C758
50V
R736
3.3
0.1uF
C728
5
0V
0.01uF
C756
50V
R730
4.7K
0.1uF
C733
50V
0.01uF
C757
50V
L704
DA-8580
EAP38319001
2S
1S
1F
2F
SDA_SUB/AMP
1:L22;11:AG10
SPK_L-
AB11
0.1uF
C750
50V
R737
3.3
R732
4.7K
MS_LRCH
2:X21
SPK_L+
AB10
MS_SCK
2:X21
AUDIO_MASTER_CLK
2:X21
0.1uF
C734
50V
C731
22000pF 50V
+1.8V_AMP
C726 22000pF 50V
+1.8V_AMP
C745 0.47uF 50V
0.1uF
C752
50V
0.1uF
C751
50V
AMP_RST
1:AA21
L705
DA-8580
EAP38319001
2S
1S
1F
2F
0.01uF
C755
50V
R735
3.3
SCL_SUB/AMP
1:L22;11:AG9
R733
4.7K
C716
22000pF
50V
R731
4.7K
+1.8V_AMP
SPK_R-
AE9
SPK_L-
AE5
SPK_L+
AE3
SPK_R+
AE7
HP_ROUT
2:X19
C719
100uF
16V
HP_LOUT
2:X19
IC700
TPA6110A2DGNRG4
3
SHUTDOWN
2
GND
4
IN2-
1
BYPASS
5
VO2
6
VDD
7
VO1
8
IN1-
C718
100uF
16V
Q700
2SC3052
E
B
C
+5V_EARPHONE
P700
WAFER-ANGLE
1
2
3
4
C703 0.22uF 16V
C717
0.22uF
16V
+3.3V
Q701
2SC3052
E
B
C
+3.3V_ST
AMP_VCC
JK700
DJ-S3600LM
BOTTOM_EARPHONE
1
2
3
4
5
+3.3V
HP_DET
SIDE_HP_MUTE
1:AJ19
D708
ENKMC2838-T112
A1
C
A2
SB_MUTE
1:AA19;R15;9:AI24;9:AI25
SB_MUTE
1:AA19;G25;9:AI24;9:AI25
NTP_MUTE
1:AA22
D709
ENKMC2838-T112
A1
C
A2
R722
100
R720
100
R721
100
D704
100V
1N4148W
OPT
D705
100V
1N4148W
OPT
D706
100V
1N4148W
OPT
D707
100V
1N4148W
OPT
D710
5.6V
AMOTECH
D711
5.6V
AMOTECH
L700
BLM18PG121SN1D
L701
BLM18PG121SN1D
C712
33pF
50V
C714
33pF
50V
R710
100
R709
100
R726
12
R727
12
R725
12
R728
12
R716
12
R705
12
R713
12
R719
12
C725
10uF
35V
C736
10uF
35V
+5V_EARPHONE
Q705
2SC3052
E
B
C
R740
0
R703
0
0.1uF
C709
C710
0.1uF
16V
C702 0.1uF
16V
0.1uF
C715
16V
0.1uF
C706
16V
R704
100
C741 1000pF 50V
C707 1000pF
50V
C708 1000pF 50V
C743 1000pF 50V
C742 1000pF 50V
C744 1000pF 50V
C705
100pF
50V
R700
10K
R724 10K
R729
10K
R707 10K
R741
10K
R714
1K
R715
1K
C701 1uF
6.3V
R708
3.3K
R717
33K
OPT
+5V_GENERAL
+5V_EARPHONE
C711
100uF
16V
D700
ENKMC2838-T112
A1
C
A2
R742
10K
R701 10K
R711
20K
R702
20K
R712
20K
R706
20K
IC701
NTP-3100L
EAN60664001
1
BST1A
2
VDR1A
3
RESET
4
AD
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
19
BCK
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
C723
0.1uF
C722
0.1uF
JK701
PEJ026-01
TOP_EARPHONE_out_of_stock
3
TRANSFER[L]
4
BREAK[L]
5
C-LUG-EL
6
C-LUG-ES
7
C-LUG-ER
8
BREAK[R]
9
TRANSFER[R]
10
FIX-TER
L709
120-ohm
L706
120-ohm
L708
120-ohm
L707
120-ohm
C727 0.1uF 16V
C7
1
3
0.
1uF
16V
C7
2
4
0.
1uF
16V
C7
3
0
0.
1uF
16V
C700 1uF 10V
C704 1uF 10V
C760
1uF
10V
R718
100
C721
0.1uF
16V
0.1uF
C720
50V
SPEAKER_L
SPEAKER_R
EARPHONE AMP
2A => 5A
MCLK SDATA WCK BCK TP is necessory
Monitor0_1_2 TP is necessory
AMP