LG 32LN549C Service Manual page 30

Audio amp(NTP-7500)
+24V_AMP
+24V
L501
CIS21J121
C501 C502 C508
C506
0 . 1 u F 0 . 1 u F
10uF 0 . 1 u F
50V 50V
10V
C504
1000pF
50V
C503
R505
100pF
50V 3.3K
AUD_LRCH
AUD_LRCK
AUD_SCK
R503 100
AMP_SDA
R504 100
AMP_SCL
C507 C509
+3.5V_ST
33pF 33pF
50V 50V
NON_LIPS
R502
10K
R520 R506
10K
NON_LIPS
NON_LIPS C 100
C505
R501 1000pF
B
Q501
AMP_MUTE 50V
MMBT3904(NXP)
10K
NON_LIPS
NON_LIPS E
R522
0
POWER_DET
LIPS_ONLY
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 © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+3.3V_Normal AMP_RESET
R521 C516
10K 1000pF
50V
L502
BLM18PG121SN1D
AUD_MASTER_CLK
C515
C514
10uF
0 . 1 u F
10V
C510 C512
10uF 0 . 1 u F
10V
16V
AGND_PLL
1
AVDD_PLL
2
THERMAL
DVDD_PLL
3 49
LF
4
IC501
DGND_PLL
5
OPT
GND_1 NTP-7500L
C511 6
10uF
C513
10V 0 . 1 u F
DGND
7
DVDD
8
SDATA
9
WCK
10
BCK
11
SDA
12
C518
22000pF
50V
+24V_AMP
OPT
R507
3 . 3
OPT
C525
C519 C521 C523
0 . 0 1 u F
0 . 1 u F 0 . 1 u F 10uF
50V
50V 35V
D501
1N4148W R508 R515
100V 12 12
OPT
C530
390pF
50V
C531
OUT1B_2 390pF
36
D502 50V
1N4148W
R509 R513
OUT1B_1
100V 12 12
35
OPT
PGND1B
34 C526
22000pF
BST1B
50V
33
VDR1
32
VCC_5
31
AGND
30
VDR2
29
C534
BST2A
1uF
28
25V
PGND2A
C527
27
22000pF
OUT2A_2 50V
26
OUT2A_1
25
+24V_AMP
D503 R514
R510
1N4148W 12
12
100V
OPT
C532
390pF
50V
C520 C522 C524
C533
0 . 1 u F 0 . 1 u F 10uF
390pF
50V
35V D504
1N4148W
R511 R512
100V 12 12
OPT
SPK_L+
L505
R516
10.0uH C537
0 . 1 u F
4.7K
L506
C535
10.0uH 0 . 4 7 u F
50V SPEAKER_L
C538
0 . 1 u F R517
4.7K
SPK_L-
SPK_L+
SPK_L-
SPK_R+
SPK_R-
SPK_R+
L503
10.0uH C539 R518
0 . 1 u F 4.7K
C536
L504
0 . 4 7 u F
10.0uH 50V SPEAKER_R
C540 R519
0 . 1 u F 4.7K
SPK_R-
LA2AW
NTP-7500
WAFER-ANGLE
4
3
2
1
P501
2 0 1 2 . 0 9 . 1 1
5
LGE Internal Use Only