Haier L32C1120 Service Manual page 57

12) Audio Amplifier
D3V3 D3V3
R641
NC
R643 NC
AUD_SHDN
R646 10K 1/10W 5%
8 AUD_SHDN
D3V3
AUD_AMP_MUTE
8 AUD_AMP_MUTE
C640
AMP_LIN
11,13 AMP_LIN
1uF
C648
AMP_RIN
11,13 AMP_RIN
1uF
For TPA3123 A24V
R665
A24V NC
R667 NC
R669 D604
NC NC/LL4148
U603
C660 NC/AS431AN-E1
R674
NC
NC
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A24V
R636
100K 1/10W 5%
R642
10K 1/10W 5%
R644
D603 LL4148 PD_MUTE Q602
MMBT3904
C632 100K 1/10W 5%
Q603 R647
MMBT3904 NC
NC
A24V
R648
R650 100K 1/10W 5%
NC
R651 C633
Q604
MMBT3904 1uF
10K 1/10W 5%
C637 +
R653 R654
0.1uF 50V
NC 10K 1/10W 5%
R655 AMP_SD
A_MUTE
560R 1/10W 5% C642 33NF50V
C646 33NF50V
R658 AMP_BYPASS
C650
560R 1/10W 5%
1uF C651
R659 R660
NC 10K 1/10W 5%
AMP_BY PASS
R662 NC
AMP_SD
R666 NC
C658 NC
R668 NC Q605
NC
C659
R670
NC
NC
R673
NC
A24V
D601
1
RB160M-60TE25
P12V +5VSB A24V VCC5D
R632 R637 R638
NC NC NC
AMP_SD
C630
R645
1uF
1K 1/10W 5%
P24V
P12V L601
R649 0.5 OHM 2W
L606
A24V A24V
C635 C636
C634
1uF 0.1uF 50V
U602
470UF35V TPA3121D2PWPR
1 24
PVCCL PGNDL
2 23
SD PGNDL
3 22
PVCCL LOUT
4 21 C641 0.22uF
MUTE BSL
5 20
LIN AVCC
6 19
RIN AVCC
7 18 GAIN0
BYPASS GAIN0
GAIN1
8 17
AGND GAIN1
9 16 C649 0.22uF
AGND BSR
10 15
PVCCR ROUT
1uF 11 14
VCLAMP PGNDR
12 13
PVCCR PGNDR
C657 C656
+
0.1uF 50V 470UF35V
3mm
O=1.8mm
6.2mm
HEAT SINK
16.2mm
Q90G6119
5
25mm
57
2
C629 R634
+
470UF35V 10K 1/10W 5%
R635
D602 LL4148
R639
51K 1/10W 5%
680R 1/10W 5% R640
U601 20K 1/10W 5%
C631 AS431AN-E1
0.1uF 50V
A24V
NC/33 OHM
NC/33 OHM
L602 C638
22uH +-25% C643 C644 1000UF35V
R656
NC/1uF 0.22uF
2K OHM 1/4W
L603 C652
22uH +-25% C653 C654 1000UF35V
R661
NC/1uF 0.22uF
2K OHM 1/4W
A24V
R663 R664
GAIN0
NC/0R05 1/10W 5% 0
GAIN0
NC/0R05 1/10W 5%
GAIN1 1
0
R671 R672
1
0R05 1/10W 5%
0R05 1/10W 5%
PD_MUTE
PD_MUTE 13
R652
0 OHM 1/3W
1 2
CN606
FB609
L+
NC/600 OHM C645 L
4 L-
R657 0.001uF 3
2
R+
1 R
0 OHM 1/3W R-
1 2 CONN
FB610 33G3278 4D
NC/600 OHM C655 4P S/T 2.5mm
0.001uF
GAIN1 GAIN(dB)
0 20
0 26
1 32
1 36