LG 42LV375H Service Manual page 36

+24V +24V_AMP
L3800
MLB-201209-0120P-N2
C3800
0 . 1 u F
50V
+1.8V_AMP
+3.3V_NORMAL
IC504
AP1117E18G-13
R474
IN ADJ/GND 1
3 Vd=1.4V 1
2
OUT
C548 C550
C549
0 . 1 u F 0 . 1 u F
10uF
16V 10V 16V
AMP_RESET_N
AUD_MASTER_CLK
+1.8V_AMP
+1.8V_AMP
L502
L501
OPT
C501 C502
10uF 0 . 1 u F
10V
16V
AUD_LRCH
AUD_LRCK
AUD_SCK
SDA1_3.3V
SCL1_3.3V
R542
R540
1K
27K
1%
1%
C551 39pF
R500 33K 1%
EXT_ROUT_N
R501 33K 1%
EXT_ROUT_P
R502 33K 1%
EXT_LOUT_P
R509 33K 1%
EXT_LOUT_N
C533 39pF
R518
27K R541
1K
1%
1%
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.
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Edge_LED 32~47 Inch = 20V
5 5 I n c h & I O P M o d u l e = 2 4 V
+24V_AMP
120 mA
C515
0 . 1 u F
50V
+3.3V_NORMAL
L504
C506
1000pF
50V
BST1A
1
VDR1A THERMAL
2
57
/RESET
C509 3
0 . 1 u F AD
4
DGND_1
5
GND_IO
6 IC501
NTP7000
CLK_I
7
C508 VDD_IO
8
C504 1000pF
EAN60969601
50V DGND_PLL
9
100pF
R508 AGND_PLL
50V 10
3.3K LF
11 NTP-7000
AVDD_PLL
12
DVDD_PLL
13
GND
14
OPT
C503 C505
10uF
0 . 1 u F
10V
+1.8V_AMP
OPT
C511
10uF C513
10V 0 . 1 u F
R503 100
R504 100
R505 100
C516
R506 100
1000pF
R507 100 50V
C507 C510 C546 C544 C545
18pF 18pF 22pF 22pF 22pF
50V 50V 50V 50V 50V
EMI EMI EMI
C553 10uF
EXT_R_AMP
+5V_NORMAL
R543
100
C552
22uF
16V
SUBAMP_MUTE
C554 10uF
EXT_L_AMP
CCFL = 20V
D501
1N4148W R519 R526
EMI
100V 12 12
AD-9060
R535
OPT
2S
3 . 3
C529
390pF
EMI 50V
C521
C519
C547
10uF 1S
0 . 1 u F
0 . 0 1 u F
35V
50V
D502
1N4148W
R520 R524
100V 12 12
OPT
C518
22000pF
50V
C520
1uF
25V
42 NC
C525
VDR2A
41 22000pF
50V
40 BST2A
R525
R521
PGND2A_2 12
39 D503 12
1N4148W AD-9060
38 PGND2A_1
100V 2S
OUT2A_2 C531
37 OPT
390pF
36 OUT2A_1 50V
PVDD2A_2
35 1S
C532
D504
34 PVDD2A_1
390pF
1N4148W
50V
PVDD2B_2
33 100V
OPT
PVDD2B_1 R522 R523
32
12 12
OUT2B_2
31
OUT2B_1 +24V
30
PGND2B_2
29
C528
C526 C527
10uF
0 . 1 u F 0 . 1 u F 35V
C524
22000pF
50V
R513
0
POWER_DET
+3.5V_ST
OPT
R515
10K
R514
100
C
R517
B
Q501
AMP_MUTE
2SC3052
10K
E
+24V
EXT_SPEAKER_DClass_AMP
L500
CB3216UA121
C561
0 . 1 u F
50V
IC502
TPA3124D2PWPR
PVCCL_1 PGNDL_2
1 24
R546
SD PGNDL_1
100
2 23
PVCCL_2 LOUT
3 22
C540 C562
R531 1uF
0 . 2 2 u F
MUTE BSL
100
50V 50V
4 21
LIN AVCC_2
5 20
EXT_L_AMP
C558
1uF RIN AVCC_1
6 19
BYPASS GAIN0
7 18
AGND_1 GAIN1
8 17
AGND_2 BSR
9 16
C563
0 . 2 2 u F
PVCCR_1 ROUT 50V
10 15
C541
1uF
VCLAMP PGNDR_2
50V 11 14
C559 PVCCR_2 PGNDR_1
12 13
1uF
16V
SPK_L+
L507
C536
2F 0 . 1 u F
C534
0 . 4 7 u F
1F 50V
C537
0 . 1 u F R528
15uH
4.7K
SPK_L-
SPK_R+
L506 C538 R529
0 . 1 u F 4.7K
2F
SPEAKER_R
C535
0 . 4 7 u F
1F 50V
C539 R530
15uH
0 . 1 u F 4.7K
SPK_R-
NTP7100
BST1A 1 42 NC
VDR1A THERMAL VDR2A
2 41
/RESET 57 BST2A
3 40
AD 4 39 PGND2A_2
DGND_1 5 38 PGND2A_1
GND_IO OUT2A_2
6 IC501-*1 37
CLK_I OUT2A_1
7 NTP-7100 36
VDD_IO 8 35 PVDD2A_2
DGND_PLL 9 34 PVDD2A_1
AGND_PLL PVDD2B_2
10 33
LF PVDD2B_1
11 32
AVDD_PLL 12 31 OUT2B_2
DVDD_PLL 13 30 OUT2B_1
GND PGND2B_2
14 29
C565
C573 C574
10uF 4 . 7 u F 4 . 7 u F
35V
50V 50V
EXT_OUT_R
EXT_OUT_L
C570
100uF
25V
EXT_OUT_L
L510
C566 C568
22.0uH R552
1uF 0 . 4 7 u F
4.7K
50V 50V
C567
1uF
L511
50V
22.0uH
C571
100uF
25V
R549
10K
OPT
Chameleon(EU_GP2_BCM3556)
xxLV375H-ZA
AUDIO AMP
WAFER-ANGLE
R536
0 SPK_L+
SPK_L+
4
SPK_L-
3
R538
0
SPK_R+
SPK_R+
2
R539
0
SPK_R-
1
P501
SPEAKER_L
EXT_SPEAKER
JK500
PEJ027-01
E_SPRING
3
T_TERMINAL1
6A
B_TERMINAL1
7A
R_SPRING
4
T_SPRING
5
OPT
OPT
B_TERMINAL2
C575 7B
C572
1uF
1uF
10V
10V
T_TERMINAL2
6B
2 0 1 0 . 1 2 . 2 0
38
LGE Internal Use Only