Read LG 42LM3400 (CHASSIS:LT21C) Service Manual online
THERMAL
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.
AMP_SCL
D501
100V
1N4148W
OPT
R517
4.7K
0.1uF
C538
50V
+24V_AMP
C505
1000pF
50V
R520
10K
NON_LIPS
0.1uF
C519
50V
SPK_L-
SPK_L+
R502
10K
NON_LIPS
AMP_MUTE
0.1uF
C508
16V
OPT
C504
1000pF
50V
C526
22000pF
22000pF
50V
0.1uF
C501
50V
C518
22000pF
50V
R506
100
NON_LIPS
R507
3.3
3.3
OPT
0.1uF
C537
50V
+3.5V_ST
L505
10.0uH
10.0uH
+24V
R519
4.7K
D503
100V
1N4148W
OPT
0.1uF
C513
16V
L502
BLM18PG121SN1D
AUD_LRCH
AUD_LRCK
C535
0.47uF
50V
0.1uF
C521
50V
C534
1uF
25V
1uF
25V
AMP_RESET
C527
22000pF
50V
22000pF
50V
C517
22000pF
50V
D502
100V
1N4148W
OPT
L504
10.0uH
10.0uH
0.1uF
C514
16V
C509
33pF
50V
33pF
50V
SPK_R+
R518
4.7K
C510
10uF
10V
OPT
C529
1uF
25V
25V
R521
10K
0.1uF
C522
50V
P501
WAFER-ANGLE
1
2
3
4
R501
10K
NON_LIPS
AMP_SDA
SPK_R-
C532
390pF
50V
AUD_SCK
+24V_AMP
L506
10.0uH
10.0uH
D504
100V
1N4148W
OPT
0.1uF
C539
50V
SPK_R-
0.1uF
C540
50V
C531
390pF
50V
AUD_MASTER_CLK
0.1uF
C502
50V
R503
100
C515
10uF
10V
10uF
10V
SPK_R+
C523
10uF
35V
10uF
35V
C507
33pF
50V
33pF
50V
C516
1000pF
50V
C503
100pF
50V
SPK_L-
R516
4.7K
+24V_AMP
C528
1uF
25V
1uF
25V
C511
10uF
10uF
10V
OPT
R504
100
0.1uF
C520
50V
C512
0.1uF
16V
R505
3.3K
C536
0.47uF
50V
C533
390pF
50V
C530
390pF
50V
L503
10.0uH
10.0uH
+3.3V_Normal
C524
10uF
35V
SPK_L+
R522
0
0
LIPS_ONLY
POWER_DET
C506
4.7uF
16V
C525
0.01uF
50V
0.01uF
50V
OPT
R508
12
R509
12
R510
12
R511
12
R512
12
R514
12
R513
12
R515
12
Q501
MMBT3904(NXP)
NON_LIPS
E
B
C
L501
CIS21J121
IC501
NTP-7500L
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
AGND
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
NTP-7500
2011.10.04
16
GP4L_S7LR2
SPEAKER_L
SPEAKER_R
Audio amp(NTP-7500)
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