LG 32LD340H Service Manual page 35

AUDIO AMP
+1.8V_AMP
+3.3V_Normal
IC404
AP1117E18G-13
IN ADJ/GND
3 Vd=1.4V 1
2
OUT
C434 C421 C446
0 . 1 u F 10uF 0 . 1 u F
16V 16V
10V
AMP_RESET
AUD_MASTER_CLK
+1.8V_AMP
+1.8V_AMP
L502
L501
OPT
OPT
C501 C502
10uF 0 . 1 u F C503
10V 10uF
16V
10V
R503
AUD_LRCH
R504
AUD_LRCK
R505
AUD_SCK
R506
AMP_SDA
R507
AMP_SCL
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.
120 mA +24V
C515 C519
0 . 1 u F 0 . 1 u F
50V
+3.3V_Normal
C514
22000pF
C518
50V
22000pF
L504
50V
C520
1uF
25V
C506
1000pF
50V
BST1A
1
VDR1A THERMAL
2
57
/RESET
3
AD
C509 4
0 . 1 u F
DGND_1
5
GND_IO
6 IC501
CLK_I
7
C508 VDD_IO
8
C504 1000pF
EAN60969603
50V DGND_PLL
9
100pF
R508 AGND_PLL
50V 10
3.3K LF
11 NTP-7100
AVDD_PLL
12
DVDD_PLL
13
GND
14
C505
0 . 1 u F
+1.8V_AMP
OPT
C511
10uF C513
0 . 1 u F
10V
100
100
100
C516
33
1000pF
33 50V
C507 C510 C546 C544 C545
18pF 18pF 22pF 22pF 22pF
50V 50V 50V 50V 50V
OPT OPT OPT
D501
1N4148W R519 R526
OPT 12 12
100V
R535
OPT
3 . 3 C529
390pF
OPT 50V
C547
C521
0 . 0 1 u F
10uF
C530
50V
35V 390pF
D502 50V
1N4148W
R520 R524
100V
12 12
OPT
42 NC
VDR2A C525
41
22000pF
40 BST2A
D503 R525
R521
50V
PGND2A_2 1N4148W 12
39 12
100V
38 PGND2A_1
OPT
OUT2A_2 C531
37
390pF
36 OUT2A_1 50V
PVDD2A_2
35
C532
34 PVDD2A_1
390pF
50V
PVDD2B_2 D504
33
1N4148W
PVDD2B_1 R522 R523
32
100V
12 12
OUT2B_2 OPT
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
OPT_Only_32"Hos.Power
+3.5V_ST
R515
R514 100
10K
C
R517
B
Q501
AMP_MUTE
2SC3052
10K
E
C540 OPT
0 . 0 1 u F
L507
50V
AD-9060 R527
C536
R531 OPT
2S 2F 0 . 1 u F
4.7K
3 . 3
C534
0 . 4 7 u F
1S 1F 50V
R532 OPT
C537 3 . 3
0 . 1 u F R528
15uH C541 OPT
4.7K 0 . 0 1 u F
50V
C542 OPT
L506
0 . 0 1 u F
AD-9060 C538 R529
50V
2S 2F
R533 OPT
0 . 1 u F 4.7K
C535
3 . 3
0 . 4 7 u F
50V
1S 1F
R534 OPT
3 . 3
C539 R530
15uH C543 OPT
0 . 1 u F 4.7K 0 . 0 1 u F
50V
R536
0
SPK_L+
R537
0
SPK_L-
R538
0
SPK_R+
R539
0
SPK_R-
SPK_L+
SPEAKER_L
SPK_L-
SPK_R+
SPEAKER_R
SPK_R-
WAFER-ANGLE
4
4
3
3
2 2
1
1
P501
SMAW250-04
P502
37LD320H 2 0 1 0 . 1 2 . 2 2
38
AMP