8.9. Audio Amp. Interface
Audio Pre-Amplifier
Gain
32dB
L , L
H , H
20dB
L , H
26dB
36dB
H , L
GAIN[1:0]
SD LOW==>> SHUT DOWN
SD HI ==>> AMP WORKS
AC OFF no pop noise
L
WORK
SHUTDOWN
MUTE_S
H
PVDD2
PVDD1
GVDD
AU_DAC0_L
GAIN0
GAIN1
AU_DAC0_R
GAIN0
GAIN1
/SD
Lout-
Lout+
Rout+
Rout-
/SD
MUTE_S
AU_DAC0_R
PHONE_R
PHONE_L
EAR_MUTE
AU_DAC0_L
PHONE_R
PHONE_L
PHONE_DET
PHONE_DET
MUTE_N
PHONE_R
PHONE_L
MUTE_S
MUTE_N
EAR
_MU
T
E
TU_PW_CON
TU_PW_CON
AU_DAC0_L
AU_DAC0_R
MUTE_S
4,9
PHONE_R
9
PHONE_L
9
PHONE_DET
9
PHONE_R
9
PHONE_L
9
TU_PW_CON
2
AU_DAC0_L
4
AU_DAC0_R
4
+12V_AMP
+12V_AMP
+12V_AMP
GVDD
5V_2
5V_STB
5V_2
5V_2
5V_STB
C391
0.1uF
R469
22K
L143
22uH
R462
10K
L140
FB/80R/6A
L137
22uH
C423
1uF
C417
1nF
C416
0.1uF
Q131
2N3904
1
3
2
C388
0.22uF/100V
C387
0.1uF
D144
1N4148
1
2
R459 10K/1%
C407 1uF
C389
0.1uF
Q129
2N3904
3
1
2
R
449
1
0
K
C424
330pF
I131
TPA6113A2
3
4
5
6
7
8
1
2
BYPASS
GND
SHUTDOWN
IN2-
VO2
VDD
VO1
IN1-
C418
NC
R458
10
L136
FB/80R/6A
I130
TPA3113D2
1
2
13
11
12
14
28
26
27
25
24
23
22
21
20
19
18
17
16
15
3
4
5
6
7
8
9
29
10
/SD
/FAULT
NC
RINN
RINP
PBTL
PVCCL
BSPL
PVCCL
OUTPL
PGND
OUTNL
BSNL
BSNR
OUTNR
PGND
OUTPR
BSPR
PVCCR
PVCCR
LINP
LINN
GAIN0
GAIN1
AVCC
AGND
GVDD
POWER
PAD
PLIMIT
C404 1uF
R450
1K
D148
1N4148
1
2
L141
22uH
R474
24K
C422
1uF
R461
11K/1%
R460
10
D146
1N4148
1
2
C394
1nF
R466
10K
+
C390
100uF/16V
L138
FB/80R/6A
R451 1K
L144
FB/80R/6A
R
452
1
0
K
Q128
2N3904
1
3
2
C398 1uF
C399 1nF
C400
330pF
C414
1uF
R457
10
C395
0.22uF
C412
0.22uF/100V
L142
FB/80R/6A
C409
330pF
R
448
N
C
D145
1N4148
1
2
Q130
2N3904
3
1
2
C421
330pF
C408 1nF
P116
S4B-XH
1
2
3
4
R+
R-
L+
L-
R456
10
C402
0.22uF
D100
1N4148
1
2
C411
0.1uF
+
C415
470uF/16V/LowESR
L145
FB/120R/3A
R455 10
R447
47K
D147
1N4148
1
2
R468
22K
C420
1uF
L139
FB/80R/6A
R463
10K
R465
1K
R471
NC
C410
0.22uF
L135
22uH
+
C386
470uF/16V/LowESR
C403 1uF
R473
47K
R472
NC
C396 1uF
Q127
2N3906
1
2
3
+
C392
470uF/16V/LowESR
C425
1uF
C393
0.1uF
C413
0.1uF
C397 1nF
R467
24K
R454
100K
C405
0.22uF
C401 4.7uF/16V/Y5V
R
453
N
C
R464 10K
R470
100K
C406 1nF
D149
1N4148
1
2
ViewSonic Corporation
Confidential - Do Not Copy
VT2730
-
1
M
73
Summary of Contents for VS13154-1M
Page 56: ...3 Press ENTER key 4 Press F4 key ViewSonic Corporation Confidential Do Not Copy VT2730 1M 55...
Page 77: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VT2730 1M 76...
Page 80: ...9 7 POWER PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy VT2730 1M 79...
Page 81: ...9 8 POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VT2730 1M 80...
Page 83: ...ViewSonic Corporation Confidential Do Not Copy VT2730 1M 82...