![background image](http://html1.mh-extra.com/html/viewsonic/ve175-2/ve175-2_service-manual_1021021028.webp)
Analog Input (VGA)
INPUT INTERFACE
Place near CN
Place near CN
R128-130
Place at
CN side
Guraded by AGND All the way
(From CN to ADE) & >= 12mil
AHSYNC is important signal
First Priority with Least VIA
TOP side ONLY
AGND
Add VIA on AGND
every 10mm
R/G/B
AGND
TB160808B800
L120,L121,L122
from BEAD80R
change to 0R for
QDI panel
RC-AHSYNC
RC-AVSYNC
RC-AHSYNC
VGA_5V
RC-AVSYNC
DB15-AVSYNC
DB15-AVSYNC
DB15-AHSYNC
DB15-AHSYNC
BLUE
GREEN
RED
DB15-SCL
DB15-SDA
DDC-SCL [6]
DDC-SDA
[6]
AHSYNC
[2]
MCU_VS
AVSYNC
[2]
MCU_CS
INR
[2]
INB
[2]
ING
[2]
AVDD_3.3
VGA_5V
AVDD_3.3
AVDD_3.3
AVDD_3.3
AVDD_3.3
R139
10K
0603
L127
0603
BEAD100R
1
2
D106
1N4148
1
2
R137
100
0603
L122
0603 0R
1
2
R132
47
0603
P104
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
R127 47
R125 47
R122 47
0603
C188
5pF/NC
0603
R124
47
0603
C187
5pF/NC
0603
L121
0603 0R
1
2
C190
5P
0603
R133
33K/NC
0603
D105
1N4148
1
2
R138
100
0603
C184
5P
0603
R126
33K/NC
0603
R123
330
0603
R131
330
0603
R130
75
0603
R135
110
0603
R134
47
0603
C189
5pF/NC
0603
I105B
74LVC14
SO-14
3
4
14
7
I105E
74LVC14
SO-14
11
10
14
7
D108
1N4148
1
2
C191
27P
0603
C192
47pF
C193
47pF/NC
R197 100
0603
I105A
74LVC14
SO-14
1
2
14
7
D104
1N4148
1
2
C182
0.1uF
C183
0.1uF
D103
1N4148
1
2
C186
0.1uF
0603
D107
1N4148
1
2
C185
27P
0603
C240
0.1uF
0603
R198 100
0603
TP11
1
TP10
1
R140
10K
0603
D110
1N4148
1
2
D114
1N4148
1
2
R199 100
0603
I105F
74LVC14
SO-14
13
12
14
7
D113 1N4148
1
2
D112
1N4148
1
2
D111
1N4148
1
2
D115
1N4148
1
2
L120
0603 0R
1
2
D119
BAT54C
SOT-23
2
3
1
D117 1N4148
1
2
D116
1N4148
1
2
R128
75
0603
R129
75
0603
D120
5.6V
1
2
10.3. Input Interface
!
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ViewSonic Corporation
25
Confidential
– Do Not Copy
VE175/b-2