Read LG 42LN549C / 42LN549E (CHASSIS:LJ3AC) Service Manual online
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.
390pF
50V
C531
0.1uF
50V
C519
10K
R502
NON_LIPS
AUD_MASTER_CLK
10uF
35V
35V
C524
12
R511
0.1uF
50V
C540
AMP_SCL
0.1uF
50V
50V
C520
10uF
10V
OPT
C511
100
R504
12
R508
10.0uH
L505
AUD_LRCH
CIS21J121
L501
10.0uH
L503
0.1uF
50V
C539
10.0uH
L504
12
R509
SPK_R-
+24V_AMP
0.1uF
50V
50V
C522
SPK_R+
100pF
50V
C503
AUD_LRCK
22000pF
50V
C527
3 . 3
OPT
R507
22000pF
50V
C526
0
LIPS_ONLY
R522
1N4148W
100V
OPT
D504
1N4148W
100V
OPT
D501
SPK_L-
33pF
50V
C507
4.7K
R519
AMP_RESET
+24V_AMP
1000pF
50V
C504
WAFER-ANGLE
P501
1
2
3
4
AUD_SCK
THERMAL
NTP-7500L
IC501
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
1
3
SC
L
1
4
/F
A
U
L
T
1
5
M
O
N
IT
O
R
0
1
6
M
O
N
IT
O
R
1
1
7
M
O
N
IT
O
R
2
1
8
B
ST
2B
1
9
PG
N
D
2B
2
0
O
U
T
2B
_1
2
1
O
U
T
2B
_2
2
2
PV
D
D
2_
1
2
3
PV
D
D
2_
2
2
4
PV
D
D
2_
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
3
7
PV
D
D
1_
1
3
8
PV
D
D
1_
2
3
9
PV
D
D
1_
3
4
0
1_
A1
T
U
O
4
1
O
U
T
1A
_2
4
2
PG
N
D
1A
4
3
B
ST
1A
4
4
/R
E
S
E
T
4
5
A
D
4
6
G
N
D
_I
O
4
7
C
L
K
_I
4
8
V
D
D
_I
O
49
[E
P
]
0.1uF
16V
C514
12
R514
33pF
50V
C509
MMBT3904(NXP)
Q501
NON_LIPS
E
B
C
10K
R521
10uF
10V
C510
4.7K
R518
+24V_AMP
SPK_L+
12
R515
0.1uF
50V
C501
1uF
25V
C529
10uF
35V
C523
1000pF
50V
C516
BLM18PG121SN1D
L502
10uF
10V
C515
SPK_L-
390pF
50V
C533
390pF
50V
C532
10.0uH
L506
100
R503
POWER_DET
AMP_SDA
0.1uF
50V
C521
1uF
25V
C528
12
R512
10K
R501
NON_LIPS
SPK_R+
1uF
25V
C534
+3.5V_ST
10uF
10V
C506
AMP_MUTE
22000pF
50V
C518
0.1uF
50V
C502
0.1uF
16V
C512
0.1uF
16V
C508
+24V
SPK_L+
+3.3V_Normal
1000pF
50V
C505
1N4148W
100V
OPT
D502
4.7K
R516
100
R506
NON_LIPS
4.7K
R517
390pF
50V
C530
SPK_R-
0.1uF
16V
C513
2
2
0
0
0
p
F
50
V
C
51
7
1N4148W
100V
OPT
D503
0.47uF
50V
C535
0.47uF
50V
C536
0.1uF
50V
C538
0.1uF
50V
C537
3.3K
R505
10K
R520
NON_LIPS
12
R510
12
R513
0.01uF
50V
OPT
C525
SPEAKER_L
SPEAKER_R
NTP-7500
Audio amp(NTP-7500)
5
LA2AW
2 0 1 2 . 0 9 . 1 1
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