Read LG 55LV4400 LC550EUH-RDA2-8R1 Service Manual online
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
+5VSB
MUTE_lineout
OFF_MUTE
SP_AOUTL
SP_AOUTR
ROUT+
ROUT-
GAIN1
GAIN0
R-
L+
L-
R+
GAIN1
GAIN0
LOUT+
MUTE_AMP
LOUT-
HW_MUTE
SP_AOUTR
SP_AOUTL
MUTE_AMP
OFF_MUTE
+3V3SB
A_MUTE
MUTE_lineout
OPCTRL3
OPCTRL4
+12V
AMPVCC_AP
AMPVCC_AP
AMP_VCC
AMP_VCC
AMPVCC_AP
+12V
+5V
+3V3SB
+12V
+3V3SB
MUTE_lineout
(6)
OFF_MUTE
(6)
OPCTRL3
(4)
OPCTRL4
(4)
+12V
(1,2,12)
+5V
(1,2,6,8,10)
+3V3SB
(1,2,3,4,8,10)
SP_AOUTR
(6)
SP_AOUTL
(6)
OPCTRL3
(4)
OPCTRL4
(4)
MODEL
Sheet
REV:
of
CIRCUITY
PCB REV:
PCB FILE :
PCB P/ N:
ECN NO:
ECN NO:
TECHNOLOGY
APPROVED BY:
CHECKED BY:
SCH FILE :
DATE:
DESIGN BY:
AUDIO AMP
(3655-0382-0150)
11
16
PCN0000614
017122724152.BRD
2.0
2.0
365503820150_PCN0000614.DSN
0171-2272-4152
Wednesday, August 31, 2011
55LV4400
MODEL
Sheet
REV:
of
CIRCUITY
PCB REV:
PCB FILE :
PCB P/ N:
ECN NO:
ECN NO:
TECHNOLOGY
APPROVED BY:
CHECKED BY:
SCH FILE :
DATE:
DESIGN BY:
AUDIO AMP
(3655-0382-0150)
11
16
PCN0000614
017122724152.BRD
2.0
2.0
365503820150_PCN0000614.DSN
0171-2272-4152
Wednesday, August 31, 2011
55LV4400
MODEL
Sheet
REV:
of
CIRCUITY
PCB REV:
PCB FILE :
PCB P/ N:
ECN NO:
ECN NO:
TECHNOLOGY
APPROVED BY:
CHECKED BY:
SCH FILE :
DATE:
DESIGN BY:
AUDIO AMP
(3655-0382-0150)
11
16
PCN0000614
017122724152.BRD
2.0
2.0
365503820150_PCN0000614.DSN
0171-2272-4152
Wednesday, August 31, 2011
55LV4400
Modify by George 03/30
NEAR MT5392
ENABLE
DISABLE
MUTE_AMP
SPEAKER
OUTPUT
OUTPUT
0 (GND)
1 (VREG)
Close to IC
1
32
36
0
1
GAIN ( dB )
1
1
26
GAIN1
0
0
GAIN0
20
0
30
60
Input Zi (Kohm)
9
15
close to J15
MUTE CIRCUIT
NEAR MT5392
AC ON
AC OFF
L30
0
0
0805R
L30
0
0
0805R
C526
1uF/25V
1uF/25V
C526
1uF/25V
1uF/25V
R690
100
100
R690
100
100
R685
10
R685
10
C516
0.68uF/16V
C516
0.68uF/16V
J15
2R50-1X4ML
2R50-1X4ML
J15
2R50-1X4ML
2R50-1X4ML
1
2
3
4
R126
100
R126
100
C518
1000pF/50V
1000pF/50V
C518
1000pF/50V
1000pF/50V
L32
0
0
0805R
L32
0
0
0805R
C509
0.22uF/16V
C509
0.22uF/16V
D84
1N4148
D84
1N4148
1
2
L42
22uH/2.2A
22uH/2.2A
L42
22uH/2.2A
22uH/2.2A
R706
0
R706
0
R703
100K
100K
R703
100K
100K
Q13
KN3906S
KN3906S
Q13
KN3906S
KN3906S
2
1
3
R699
NC/47K
NC/47K
R699
NC/47K
NC/47K
R689
10K
10K
R689
10K
10K
C513
0.22uF/16V
C513
0.22uF/16V
C515
0.68uF/16V
C515
0.68uF/16V
R118
NC/47K
R118
NC/47K
L50
80ohm/6A
0805L
L50
80ohm/6A
0805L
D10
BAV70
D10
BAV70
1
2
3
C533
1.0uF/25V
0805C
1.0uF/25V
0805C
C533
1.0uF/25V
0805C
1.0uF/25V
0805C
C499
1uF/25V
1uF/25V
C499
1uF/25V
1uF/25V
R704
0
0
R704
0
0
+ CE62
470uF/16V
+ CE62
470uF/16V
C521
0.1uF/16V
0.1uF/16V
C521
0.1uF/16V
0.1uF/16V
R684
10K
10K
R684
10K
10K
R696
10K
R696
10K
C514
0.68uF/16V
C514
0.68uF/16V
D5
NC/1N4148
D5
NC/1N4148
1
2
R135
10K
10K
R135
10K
10K
R110
1K
R110
1K
L49
80ohm/6A
L49
80ohm/6A
D85
1N4148
D85
1N4148
1
2
R112 47K
R112 47K
D33
BAV70
BAV70
D33
BAV70
BAV70
1
2
3
Q40
KN3904S
KN3904S
Q40
KN3904S
KN3904S
2
1
3
U48B
TPA3110LD2
U48B
TPA3110LD2
P1
P2
P3
P4
P5
P6
P7
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
R123
NC/100K
NC/100K
R123
NC/100K
NC/100K
C510
1000pF/50V
1000pF/50V
C510
1000pF/50V
1000pF/50V
L31
0
0
0805R
L31
0
0
0805R
C531
1000pF/50V
1000pF/50V
C531
1000pF/50V
1000pF/50V
L47
22uH/2.2A
22uH/2.2A
L47
22uH/2.2A
22uH/2.2A
+ CE61
NC/100uF/16V
+ CE61
NC/100uF/16V
R702
10K
R702
10K
L46
22uH/2.2A
22uH/2.2A
L46
22uH/2.2A
22uH/2.2A
R701
NC/0
NC/0
R701
NC/0
NC/0
C520
1.0uF/25V
0805C
1.0uF/25V
0805C
C520
1.0uF/25V
0805C
1.0uF/25V
0805C
C500
0.1uF/25V
0.1uF/25V
C500
0.1uF/25V
0.1uF/25V
R698
NC/100K
NC/100K
R698
NC/100K
NC/100K
+ CE24
100uF/16V
+ CE24
100uF/16V
L43
22uH/2.2A
22uH/2.2A
L43
22uH/2.2A
22uH/2.2A
C504
1000pF/50V
1000pF/50V
C504
1000pF/50V
1000pF/50V
C524
1.0uF/25V
0805C
1.0uF/25V
0805C
C524
1.0uF/25V
0805C
1.0uF/25V
0805C
C532
1.0uF/25V
1.0uF/25V
0805C
C532
1.0uF/25V
1.0uF/25V
0805C
R120
47K
R120
47K
R116
47K
R116
47K
R697
0
0
R697
0
0
L45
22uH/2.2A
22uH/2.2A
L45
22uH/2.2A
22uH/2.2A
C517
0.68uF/16V
C517
0.68uF/16V
C508
0.22uF/16V
C508
0.22uF/16V
C507
0.22uF/16V
C507
0.22uF/16V
R691
100K
100K
R691
100K
100K
+ CE63
470uF/25V
+ CE63
470uF/25V
R687
1K5
R687
1K5
R700
NC/47K
NC/47K
R700
NC/47K
NC/47K
L48
22uH/2.2A
22uH/2.2A
L48
22uH/2.2A
22uH/2.2A
C511
NC/0.22uF/16V
NC/0.22uF/16V
C511
NC/0.22uF/16V
NC/0.22uF/16V
C543
NC/4.7uF/25V
C543
NC/4.7uF/25V
L44
22uH/2.2A
22uH/2.2A
L44
22uH/2.2A
22uH/2.2A
C461
4.7uF/25V
C461
4.7uF/25V
C527
1uF/16V
C527
1uF/16V
R686
NC/390K
NC/390K
R686
NC/390K
NC/390K
C523
NC/1uF/25V
C523
NC/1uF/25V
D6
BAV70
D6
BAV70
1
2
3
R705
0
R705
0
U48A
TPA3110LD2
U48A
TPA3110LD2
SD
1
FAULT
2
LINP
3
LINN
4
GAIN0
5
GAIN1
6
AVCC
7
AGND
8
GVDD
9
PLIMT
10
RINN
11
RINP
12
NC
13
PBTL
14
PVCC
15
PVCC
16
BSP
17
OUTP
18
PGND
19
OUTP
20
BSP
21
BSN
22
OUTN
23
PGND
24
OUTN
25
BSN
26
PVCC
27
PVCC
28
GND
29
C525
1uF/16V
C525
1uF/16V
C522
1uF/25V
C522
1uF/25V
R688
1K5
R688
1K5
C528
NC/1uF/25V
NC/1uF/25V
C528
NC/1uF/25V
NC/1uF/25V
Q12
KN3906S
Q12
KN3906S
2
1
3
L41
22uH/2.2A
22uH/2.2A
L41
22uH/2.2A
22uH/2.2A
L33
0
0
0805R
L33
0
0
0805R
R695
10K
R695
10K
R113
2K_F
R113
2K_F
C519
1000pF/50V
1000pF/50V
C519
1000pF/50V
1000pF/50V
C530
1000pF/50V
1000pF/50V
C530
1000pF/50V
1000pF/50V
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