LG 42LD452B Service Manual page 23

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+3.3V_Normal
IC404
AP1117E18G-13
IN ADJ/GND
Vd=1.4V
3 1
2
OUT
C434
0 . 1 u F
16V
+3.5V_ST
EXT_AMP_SD
008:AO27
SUB_MUTE
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.
+1.8V_AMP
120 mA
C421 C446
0 . 1 u F
10uF
10V 16V
+3.3V_Normal
AMP_RESET_N
C506
1000pF
50V
AUD_MASTER_CLK
DGND_1
GND_IO
C508 VDD_IO
C504 1000pF
50V DGND_PLL
100pF
AGND_PLL
50V
AVDD_PLL
DVDD_PLL
OPT
C501 C502 OPT
10uF 0 . 1 u F C503
10V 10uF
16V
10V
OPT
C511
10uF
10V
AUD_LRCH
AUD_LRCK
AUD_SCK
AMP_SDA
AMP_SCL
C507 C510 C546 C544
18pF 18pF 22pF 22pF
50V 50V 50V 50V
OPT OPT
+24V
L509
CB3216UA121
CB3216UA121
C550
L508
22uF
35V
IC502
TPA3124D2PWPR
PVCCL_1
1
C
OPT
SD
2
OPT 1K B Q5006
2SC3052
R540
PVCCL_2
E 3
MUTE
4
C551
008:R28
1uF LIN
5
EXT_SPK_L
C552
008:R28
1uF RIN
6
EXT_SPK_R
BYPASS
7
AGND_1
8
AGND_2
9
PVCCR_1
10
VCLAMP
11
PVCCR_2
C553 C554
12
1uF 1uF
16V 16V
C555
10uF
35V
OPT
R535
3 . 3
OPT
C547
C521
0 . 0 1 u F
10uF
50V
35V
50V
C520
1uF
25V
BST1A NC
1 42
VDR1A THERMAL 41 VDR2A
2
/RESET BST2A
3 40
AD 39 PGND2A_2
4
PGND2A_1
5 38
37 OUT2A_2
6 IC501
CLK_I OUT2A_1
7 36
35 PVDD2A_2
8
EAN60969601
PVDD2A_1
9 34
33 PVDD2B_2
10
LF PVDD2B_1
11 NTP-7000 32
OUT2B_2
12 31
OUT2B_1
13 30 +24V
GND PGND2B_2
14 29
R513
0
POWER_DET
C516 OPT
1000pF
50V
+3.5V_ST
C545
22pF
50V
R515
OPT
R514 100 10K
C
R517
B
Q501
2SC3052
10K
E
PGNDL_2
24
PGNDL_1
23 L510
AD-9060
C563 C565
EAP61008401 R551
2 . 2 u F 2 . 2 u F
LOUT
2S 2F
22 50V 50V
C558
0 . 2 2 u F
BSL
1S 1F
21 25V
C564 C566
2 . 2 u F 2 . 2 u F
AVCC_2
50V 50V
20
AVCC_1
19
R552
GAIN0
18
GAIN1
17
BSR
16
C559
0 . 2 2 u F
ROUT
25V
15
PGNDR_2
14
PGNDR_1
13
C560
C561
0 . 1 u F 10uF
50V 35V
D501
1N4148W L507
100V AD-9060
OPT 2S 2F
C529
390pF
50V C534
0 . 4 7 u F
1S 1F 50V
C530
390pF
D502 50V 15uH
1N4148W
100V
OPT
D503
1N4148W L506
100V AD-9060
OPT 2S 2F
C531
390pF C535
50V 0 . 4 7 u F
1S 1F
C532
390pF
50V
D504 15uH
1N4148W
100V
OPT
C528
10uF
35V
R536
0
SPK_L+
R537
0
SPK_L-
R538
0
SPK_R+
R539
0
SPK_R-
AMP_MUTE
EXT_OUT_L
10K
EXT_OUT_R
10K
SPK_L+
OPT
OPT
SPEAKER_L
OPT
OPT
SPK_L-
SPK_R+
OPT
OPT
SPEAKER_R
50V
OPT
OPT
SPK_R-
WAFER-ANGLE
4 4
3 3
2
2
1 1
P501
SPK_SLIM
SMAW250-04
P502
SPK_NORMAL
GP2_Saturn7M
10
AMP/NTP7000