ViewSonic VTMS2431 Service Manual page 79

8.9. Audio Interface
PC Audio input
Headphone output
P602
PHONE JACK NORMAL CLOSE
5VAMP
ViewSonic Corporation
Location near phone jack
R650
10K
R729
10K
C647 C648
330pF 330pF
R732 C649
C666
1K 330pF NC
add C666,C665
C650 47uF/16V
1
9
8
7
6
C651 47uF/16V
R733 C652
C665
1K 330pF NC
R601
R735 10K
1
5VAMP 1,10
2
R659
C653
NC/10K 1uF/0603
modify C653 footprint from C0805 to C0603 and add cap
Close to MST. IC
C643
1uF/0603 PC_Audio-AUR2
C644
1uF/0603 PC_Audio-AUL2
C645 C646
560pF 560pF
R730 R731
12K 12K
080910
0 0603
L611
PHONE_R
PHONE_L
L601 0 0603
5VAMP
0: SPEAKER MODE
R734
10K
1: HEADPHONE MODE
0R
R736 100R
B
SOT
3
C
23
E
C654
Q606
100nF
NC/MMBT3904
1uF 080910
76
PC_Audio-AUR2 4
PC_Audio-AUL2 4
PHONE_R 10
PHONE_L 10
PHONE_DET 10
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