★
Components having special characteristics are marked
⚠
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
NPO
NPO
Close to pin1
Close to pin20
I2S
ADUIO DAC
ADUIO
L
R
AUDIO PORT
AUDIO DAC CONF
DAC SOFT MUTE
AUDIO DAC POWER
AC power OFF
AC power ON
Normal mute
from IC chip
to mute triode
AMUTE:
H: mute On (quickly)
L: mute Off (slowly, RC)
AUDIO MUTE
OFF_MUTE for quickly audio
mute when AC OFF;
Select drop off quickly
normal power net
VCC R/R to Q1.b
5.000V 0.772V
4.532V 0.700V
3.885V 0.600V
3.237V 0.500V
Resistor value can tune
for best power sequence;
DM_L
FMT
XSMT
AMUTE
FLT
DEMP
DM_R
DM_L
AUDIO_L
DM_R
XSMT
A_MUTE
A_MUTE
FLT
DEMP
AUDIO_R
AUDIO_L
AUDIO_R
FMT
AOLRCK
AOSDATA
AOBCK
AOMCLK
AOMCLK
AOBCK
AOLRCK
AOSDATA
AMUTE
AMUTE
A_MUTE
OFF_MUTE
OFF_MUTE
3.3VA
3.3VA
3.3VA
3.3VA
3.3VA
VCC
3.3VA
3.3VA
3.3VA
+12V_PS
5V_STBY
-24V
VCC_PS
AOMCLK_R
4/9
AOBCK_R
4/9
AOLRCK_R
4/9
AOSDATA0_R
4/9
AMUTE
4/9, 5/9
C33
22uF/6.3V/X5R
R529
470
R91
33
R91
33
R531
10K
R76
100
C557
100uF/16V
Q704
2N3904
SOT23/SMD
1
32
R720
10K
C89
10uF/6.3V/X5R
C0805/SMD
R532
0_NC
R536
1K
R78
2.74K_1%
TP634
R540
10K
C311
0.1uF
C306
2.2uF
C302
0.1uF
R719
150K
R54
33
R54
33
C313
2.2nF
C708
10uF/16V
C0805/SMD
R79
15K_1%
Q702
2SD2704K
2SD2704K/SMD
2
1
3
C419
0.1u
0.1u
Q701
2SD2704K
2SD2704K/SMD
2
1
3
R533
470
C303
0.1uF
C309
0.1uF
TP635
R541
100
R721
100K
R537
1K
R530
1k
R718
10K
D31
1N4148
TP636
U701
BL1117-3.3
SOT223/SMD
AD
J/G
N
D
1
OUT
2
IN
3
R528
22
C310
0.1uF
R538
22
R539
0_NC
R534
10K
R542
100
R50
33
R50
33
Q705
2N3906
SOT23/SMD
1
3
2
Q16
2N3904
1
32
D32
1N4148
R535
0_NC
C301
0.1uF
R74
0
R74
0
U702
PCM5102A
CPVDD
1
CAPP
2
CPGND
3
CAPM
4
VNEG
5
OUTL
6
OUTR
7
AVDD
8
AGND
9
DEMP
10
FLT
11
SCK
12
BCK
13
DIN
14
LRCK
15
FMT
16
XSMT
17
LDOO
18
DGND
19
DVDD
20
C308
0.1uF
C305
2.2uF
R732
47K
NC16
NC0603/SMD
J21
RCA2x1
L
2
R
1
GND
4
GND
3
Q706
2N3904
SOT23/SMD
1
32
Q703
2N3904
SOT23/SMD
SOT23/SMD
1
32
R774
100
C85
10uF/6.3V/X5R
C0805/SMD
C312
2.2nF
R776
100
R710
10K
R75
3.3K
MAIN 7/9
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
BD-S677
37