Read LG 32LG3DCH (CHASSIS:LA76B) Service Manual online
R_SOUND_P
005:AC8
1000pF
50V
C558
1000pF
50V
C557
R_SOUND_N
005:AC11
1000pF
50V
C562
L_SOUND_P
005:AC13
L_SOUND_N
005:AC15
1000pF
50V
C559
R_SOUND+
012:E20
R_SOUND-
012:E18
L_SOUND+
012:E18
L_SOUND-
012:E18
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.
TPA6011A4PWPRG4
IC501
3
PVDD_1
2
ROUT-
4
RHPIN
1
PGND_1
6
RIN
5
RLINEIN
7
VDD
8
LIN
9
LLINEIN
10
LHPIN
11
PVDD_2
12
LOUT-
13
PGND_2
14
LOUT+
15
SHUTDOWN
16
FADE
17
BYPASS
18
AGND
19
SEMAX
20
SEDIFF
21
VOLUME
22
HP/LINE
23
SE/BTL
24
ROUT+
2SC3875S
Q502
E
B
C
+5V_GENERAL
0.1uF
C544
10uF
16V
C541
6.8K
R549
R549
OPT
3.3K
R546
1uF
10V
C538
1K
R541
R541
10K
R539
R539
1.6K
R543
390
R542
R542
C534
OPT
10uF
6.3V
C523
15pF
50V
C521
EXT_SPK
001:I8
EXT_SPK_L+
005:AM15
1K
R548
R548
1K
R544
R544
EXT_SPK_L-
005:AM15
100
R545
PEJ024-01
JK500
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
1uF
10V
C510
OPT
1uF
10V
C512
OPT
0
R537
0
R538
EXT_SPK_L+
005:M21
EXT_SPK_L-
005:F20
NTP3000A
IC500
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
VSS_IO
6
CLK_I
7
CLK_O
8
VDD_IO
9
DGNDPLL
10
AGNDPLL
11
LFM
12
AVDDPLL
13
DVDDPLL
14
NC_1
15
DVSS
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
PWM_3B/PWM_HP2
23
PWM_3A/PWM_HP1
24
PROTECT
25
FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC_2
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
AMP_RST
001:Q9
100
R501
1000pF
50V
C505
1uF
16V
C519
1uF
1
0
V
C513
22000pF
50V
C515
I2S_MCLK
001:P7
+3.3V_PRO
0.1uF
50V
C508
+1.8V_AMP
0
OPT
R502
100pF
50V
C503
1000pF
50V
C507
3.3K
R506
0
R500
R500
MLB-201209-0120P-N2
L517
+1.8V_AMP
MLB-201209-0120P-N2
L516
+1.8V_AMP
0.1uF
50V
C501
0.1uF
50V
C504
+16V_AMP
3.3
R508
0.01uF
50V
C516
0.1uF
50V
C520
0.1uF
50V
C525
0.1uF
50V
C527
22000pF
50V
C518
DA-8580
L519
2S
1S
1F
2F
DA-8580
L518
2S
1S
1F
2F
+16V_AMP
1000pF
50V
OPT
C530
5.6
OPT
R513
1N4148W
100V
D501
1N4148W
100V
D502
1000pF
50V
C536
1000pF
50V
C537
5.6
R516
5.6
R517
+16V_AMP
1000pF
50V
OPT
C529
5.6
OPT
R512
1uF
1
6
V
C524
1000pF
50V
C540
1N4148W
100V
D504
5.6
R519
5.6
R518
1000pF
50V
C539
1N4148W
100V
D503
22000pF
5
0
V
C526
1000pF
50V
OPT
C532
5.6
OPT
R515
+16V_AMP
5.6
OPT
R514
1000pF
50V
OPT
C531
+16V_AMP
+16V_AMP
0.1uF
50V
C533
0.1uF
50V
C528
22000pF
5
0
V
C522
1uF
10V
C517
+1.8V_AMP
0.1uF
50V
C514
ACD_RST
001:J10;001:AF7;007:O25;009:X26
0
OPT R510
33K
OPT
R509
120K
OPT
R507
+16V_AMP
DATA
001:P7
LRCLK
001:P7
SCLK
001:P7
MSDA
001:T7;001:AE20;004:N17;004:AL14;010:C14
MSCL
001:T7;001:AE21;004:N18;004:AL14;010:C15
1
0
0
R
504
100
R
5
0
3
33pF
50V
OPT
C509
33pF
50V
OPT
C511
0.47uF
50V
C542
0.1uF
50V
C545
0.1uF
50V
C546
4.7K
R520
4.7K
R521
0.01uF
50V
C550
0.01uF
50V
C551
3.3
R524
3.3
R525
3.3
R527
0.1uF
50V
C548
4.7K
R522
4.7K
R523
0.01uF
50V
C552
0.1uF
50V
C547
3.3
R526
0.01uF
50V
C553
0.47uF
50V
C543
10uF
16V
C502
10uF
16V
C500
+3.3V_PRO
47K
R505
D500
1uF
25V
C506
TPA6110A2DGNRG4
IC502
3
SHUTDOWN
2
GND
4
IN2-
1
BYPASS
5
VO2
6
VDD
7
VO1
8
IN1-
+5V_GENERAL
10uF
16V
C564
0.1uF
50V
C561
HP_L_OUT
012:R4
1K
R535
100pF
50V
C568
HP_R_OUT
012:R7
1K
R534
100pF
50V
C567
HP_R
001:I7
HP_L
001:I7
9.1K
R533
13K
R532
100pF
50V
C560
9.1K
R529
13K
R531
100pF
50V
C556
2.2uF
16V
C555
R530
OPT
4.7K
R552
100
R550
2SC3875S
Q504
E
B
C
OPT
R551
MUTE
001:Q5;009:AI34
KDS181
D505
+5V_GENERAL
4.7K
R553
0
R554
3K
R540
R540
2SA1530A-T112-1R
Q503
E
B
C
L_SOUND_P
005:AH8
L_SOUND_N
005:AH7
R_SOUND_P
005:AH9
R_SOUND_N
005:AH8
500-ohm
L511
500-ohm
L505
MBW3216-501TF
L520
500-ohm
L503
500-ohm
L506
500-ohm
L510
500-ohm
L512
500-ohm
L509
500-ohm
L504
MBW3216-501TF
L515
100uF
16V
C566
100uF
16V
C565
1uF
25V
C563
1uF
25V
25V
C554
330uF
25V
C535
100
R547
9.1K
R555
2SC3052
Q1910
E
B
C
4.7K
R556
2SA1530A-T112-1R
Q1911
E
B
C
KDS181
D506
4.7K
R557
1N4148W
100V
D507
1N4148W
100V
D509
150
R558
+5V_GENERAL
1/10W
0
5%
R561
1K
R560
100K
R559
1N4148W
100V
D508
R2145
OPT
R2146
OPT
100uF
16V
C570
2.2uF
50V
C569
OPT
+5V_ST
1/10W
0
5%
R566
OPT
10K
R567
OPT
R567
OPT
SUB_MUTE
001:J10;005:P25;009:AI33
HP_MUTE
001:J5;009:AI32;012:N6
R569
OPT
R568
OPT
0
R570
R571
OPT
R572
OPT
SUB_MUTE
001:J10;005:V20;009:AI33
+5V_GENERAL
1uF
50V
C549
AMP
2008.3.14
5 12
32LG3DCH
EXTERNAL SPEAKER OUT JACK
EXTERNAL SPEAKER OUT AMP
HEAD PHONE OUT AMP
MAIN SPEAKER DIGITAL AMP
MUTE
NORMAL
NORMAL
MUTE
NORMAL
MUTE
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