ViewSonic VT2730-1M Service Manual page 73

8.8. Audio Interface
PC Audio input
Location near phone jack
P112
3
5
4
2
1
PC_AUDIO IN JACK
C366 C367
Green
330pF 330pF
pin 2,4 NC
pin 3,5 NC
Headphone output
5V_STB
P113 R425 10K
2
3
4
5
1
PHONE_JACK
R427 R426
Blue
PHONE_DET 1K 1K
pin 2,3 NC
pin 4,5 NC
C376
NC/1uF
AUOutR_RCA
AUOutL_RCA
ViewSonic Corporation
R421
18K PC_Audio-AUR1
R422
18K PC_Audio-AUL1
R423 R424
12K 12K C368 C369
560pF 560pF
3.3V_STB
R512 R513
1K/NC 1K/NC
R515
C370 0R
47uF/16V
3 2
R514
C373 0R Q123
47uF/16V 2N3906/NC
3 2
Q124
C374 C375 2N3906/NC R429 1K/NC
330pF 330pF
R430 1K/NC
VAF2
R431 82K
VAF2
C378
R432 10uF/10V/Y5V
7.5K I129A
3
AVREF2 +
1
2
-
C379 R433 R434 LM358
1uF 15K 6.8K
R436
1.5K
VAF2
R440 82K
VAF2
R444
1K/NC
R441
7.5K I129B C384
5
AVREF2 +
7
6
-
C385 R442 R443 10uF/10V/Y5V
1uF 15K 6.8K LM358
R445
1.5K
3.3V_2
SPDIF OUT
L133
FB/600R/1.5A
C371 C372
10uF/10V/Y5V 0.1uF
R428
SPDIF_OUT
100 D141
C377
22pF
NC/ESD4.7p
Placement Near SPDIF
5V_2
PHONE_R
PHONE_L
5V_STB
FB/600R/1.5A/NC
MUTE_S
R435
1K/NC
R308
0R
C441
AU_OUT_L
10uF/10V/Y5V/NC
AU_OUT_R
1
R516
Q125 1K
D142
2N3904/NC NC/ESD4.7p
R437
R309 1K/NC
0R
C442
10uF/10V/Y5V/NC
1
Q126 R517
1K
R446
1K/NC
2N3904/NC MUTE_L
72
PHONE_DET
SPDIF_OUT
MUTE_S
MUTE_L
PHONE_R
1
VCC
PHONE_L
2
IN
3
GND
P114
S/PDIF OUT AUOutR_RCA
AUOutL_RCA
PC_Audio-AUR1
PC_Audio-AUL1
VAF2
FB/600R/1.5A
Q115
L146
2
3
L147
1
R304
AP2305
100K
Q116
1
B
R305 10K SOT
3
C
23
2
E
C135
MMBT3904 0.1uF/NC
P115
2
1
VAF2
5V_2
L134
4
3
FB/600R/1.5A/NC
D143 R438
10K
RCA1X2_Audio R439
NC/ESD4.7p C381 10K
0.1uF
RCA OUT
Confidential - Do Not Copy
PHONE_DET 10
SPDIF_OUT 4
MUTE_S 4,10
MUTE_L 4
PHONE_R 10
PHONE_L 10
AUOutR_RCA 4
AUOutL_RCA 4
PC_Audio-AUR1 4
PC_Audio-AUL1 4
HI ENABLE
R306
MUTE_L
10K
R521
10K/NC
1
2N3904/NC
Q106
AVREF2
C382 C383
0.1uF 10uF/10V/Y5V
VT2730-1M