LG 32LD400_LC320WUG-SCR7 Service Manual page 135

E
+12V
(1) +12V
D151 D151 LL4148WP LL4148WP
1206D 1206D
D
C71 C71
0.1uF/16V 0.1uF/16V
Q66 Q66 2 R817 R817
KN3906S KN3906S 10K 10K +3V3SB
(2,7,8) +3V3SB
+ + CE128 CE128 NEAR MT5387
33uF/16V 33uF/16V C561 C561
NC/1uF/16V NC/1uF/16V R819 R819
10K 10K
R765 R765
47K 47K
R846 R846
2
(8) ADIN2
100 100
3
1
D12 D12
R767 R767 BAT54C-7-F BAT54C-7-F
390K 390K
MUTE (12)
DEL L56 L58 L60 L61
C
C14 C14
AO1AUXR
MUTE_AMP R83 R83 2 Q8 Q8
1K 1K KN3904S KN3904S
NC NC
R82 R82
NC/1K NC/1K
+12V_AP
R81 R81 10 10
B
AO1AUXL
GAIN0 GAIN1 GAIN ( dB ) Input Zi (Kohm)
0 0 20 60
1 0 26 30
A
0 1 32 15
1 1 36 9
E
D
Audio Team Recommend
+12V
(1) +12V
C559 C559
1uF/16V 1uF/16V
+12V_OP
DEL R852 CE130 C562
MUTE_AMP
R783 R783 SPEAKER
390K 390K MUTE_AMP
OUTPUT
0 (GND) ENABLE
1 (VREG) DISABLE
R63 R63
100K 100K
U51A U51A
TPA3110D2 TPA3110D2
1
SD
R580 R580 2
FAULT
1K5 1K5
R576 R576 C12 C12 C97 C97 1uF/16V 1uF/16V 3
LINP
NC/47K NC/47K C96 C96 1uF/16V 1uF/16V
4
LINN
NC NC
GAIN0
5
GAIN0
GAIN1
6
GAIN1
7
AVCC
C86 C86
8
AGND
C92 C92 1uF/16V 1uF/16V
1uF/16V 1uF/16V R68 R68 10K 10K
9
GVDD
C98 C98 1uF/16V 1uF/16V
R73 R73 10K 10K
10
PLIMT
C93 C93 1uF/16V 1uF/16V
11
RINN
R577 R577 C13 C13 C94 C94 1uF/16V 1uF/16V
12
RINP
NC/47K NC/47K 13
NC
R578 R578 1K5 1K5 NC NC
14
PBTL
R76 R76
0 0
+12V_AP
R586 R586 C32 C32
100K 100K R587 R587 1uF/16V 1uF/16V
NC/100K NC/100K
GAIN1
GAIN0
R590 R590 R591 R591
NC/0 NC/0 0 0
D
C
+12V_OP
L78 L78 1K/0805 1K/0805
0805L 0805L
C560 C560 + + CE129 CE129
0.1uF/16V 0.1uF/16V 100uF/16V 100uF/16V
R853 R853 47K_F 47K_F AUD_Vref
R851 R851 CE131 CE131 C564 C564
+ +
0.1uF/16V 0.1uF/16V
ZD7 ZD7 10uF/50V 10uF/50V
NC NC 47K_F 47K_F
DEL D149 D150
+12V_AP +12V
L54 L54
80ohm/6A 80ohm/6A
TPA3110D2 spec defined that ?a 220 µF or larger
capacitor should be placed on each PVCC
Close to IC
+ + CE77 CE77
C66 C66
0.1uF/16V 0.1uF/16V 470uF/25V 470uF/25V
28
PVCC
27
PVCC
26 C75 C75 0.22uF/16V 0.22uF/16V
BSN
ROUT+
25
OUTN
24
PGND
ROUT-
23
OUTN
22
BSN
C99 C99 0.22uF/16V 0.22uF/16V
C103 0.22uF/16V C103 0.22uF/16V
21
BSP
LOUT-
20
OUTP
19
PGND
LOUT+
18
OUTP
17
BSP
C102 0.22uF/16V C102 0.22uF/16V
16
PVCC
15
PVCC
U51B U51B
TPA3110D2 TPA3110D2
P1 P21
P2 P20
P3 P19
P4 P18
P5 P17
P6 P16
P7 P15
C
B
R836 R836
AL0_AUX C88 C88 R839 R839 R835 R835 20K_F 20K_F
(8) AL0_AUX
4.7uF/10V 4.7uF/10V 5K11_F 5K11_F
AUD_Vref
C268 C268
1000pF/50V 1000pF/50V
R837 R837
AR0_AUX C89 C89 4.7uF/10V 4.7uF/10V R838 R838 R834 R834 20K_F 20K_F
(8) AR0_AUX
0805C 0805C 5K11_F 5K11_F
AUD_Vref
C267 C267
1000pF/50V 1000pF/50V
L30 L30
1 2
22uH/2.2A 22uH/2.2A
C18 C18
1.0uF/25V 1.0uF/25V
L28 L28
1 2
22uH/2.2A 22uH/2.2A
C10 C10
1.0uF/25V 1.0uF/25V
0805C 0805C
L32 L32
1 2
22uH/2.2A 22uH/2.2A
C23 C23
1.0uF/25V 1.0uF/25V
0805C 0805C
L34 L34
1 2
22uH/2.2A 22uH/2.2A
C27 C27
1.0uF/25V 1.0uF/25V
0805C 0805C DEL L29 L31 L33 L35
APPROVED BY: APPROVED BY: APPROVED BY:
CHECKED BY: CHECKED BY: CHECKED BY:
DESIGN BY: DESIGN BY: DESIGN BY:
B
A
5K11_F 5K11_F
C558 100pF/50V C558 100pF/50V
SOP8 SOP8
NJM4558M NJM4558M
2
1
AO1AUXL
3
U50A U50A
D
+12V_OP
5K11_F 5K11_F
C557 100pF/50V C557 100pF/50V
SOP8 SOP8
NJM4558M NJM4558M
6
7
AO1AUXR
5
U50B U50B
+12V_OP
C
close to J5
C15 C15
1000pF/50V 1000pF/50V
C11 C11
1000pF/50V 1000pF/50V
J5 J5
R+
4
R-
3
L-
2
L+
1
2R50-1X4ML 2R50-1X4ML
B
C24 C24
1000pF/50V 1000pF/50V
C26 C26
1000pF/50V 1000pF/50V
A
TECHNOLOGY TECHNOLOGY TECHNOLOGY
MODEL MODEL MODEL MT5387_LGE_32/42LD400 MT5387_LGE_32/42LD400 MT5387_LGE_32/42LD400
(3632-1442-0150) (3632-1442-0150) (3632-1442-0150)
(3642-1112-0150) (3642-1112-0150) (3642-1112-0150)
CIRCUITY CIRCUITY CIRCUITY AUDIO AMP. - SPEAKER AUDIO AMP. - SPEAKER AUDIO AMP. - SPEAKER
PCB P/ N: PCB P/ N: PCB P/ N: 0171-2271-3274 0171-2271-3274 0171-2271-3274 Sheet Sheet Sheet 13 13 13 of of of 16 16 16
ECN NO: ECN NO: ECN NO: N/A N/A N/A 04 04 04
REV: REV: REV:
SCH FILE : SCH FILE : SCH FILE :
363214420150.DSN 363214420150.DSN 363214420150.DSN PCB REV: PCB REV: PCB REV:
04 04 04
PCB FILE : PCB FILE : PCB FILE :
017122713274.BRD 017122713274.BRD 017122713274.BRD DATE: DATE: DATE:
Wednesday, August 25, 2010 Wednesday, August 25, 2010 Wednesday, August 25, 2010
A