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ViewSonic VG181
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Service
Manual
ViewSonic
VG181
July
2000
-
Version
1.0
THEORY
OF
CIRCUIT
OPERATION
PIN
DESCRIPTION
OF
U32
:
Vec
Power
of
TTL
input
Odd
pixel
(second
pixel)
bus
of
Red
bit
1
Odd
pixel
(second
pixel)
bus
of
Red
bit
7
Odd
pixel
(second
pixel)
bus
of
Green
bit
2
Ground
of
TTL
input
Odd
pixel
(second
pixel)
bus
of
Green
bit
3
Odd
pixel
(second
pixel)
bus
of
Green
bit
4
Odd
pixel
(second
pixel)
bus
of
Green
bit
0
Power
of
TTL
input
Odd
pixei
(second
pixel)
bus
of
Green
bit
1
Odd
pixel
(second
pixel)
bus
of
Green
bit
5
Odd
pixel
(second
pixel)
bus
of
Green
bit
6
Ground
of
TTL
input
Odd
pixel
(second
pixel)
bus
of
Green
bit
7
Odd
pixel
(second
pixel)
bus
of
blue
bit
2
Odd
pixel
(second
pixel)
bus
of
blue
bit
0
Edge
select
for
latching
data
Odd
pixel
(second
pixel)
bus
of
blue
bit
1
Odd
pixel
(second
pixel)
bus
of
blue
bit
3
Odd
pixel
(second
pixel)
bus
of
blue
bit
4
Ground
of
TTL
input
+
2s
=
oO
|
20
|
TxXINIS
22
Odd
pixel
(second
pixel)
bus
of
blue
bit
5
23
TXIN21
Odd
pixel
(second
pixel)
bus
of
blue
bit
6
24
TXIN22
Odd
pixel
(second
pixel)
bus
of
blue
bit
7
Unused
Power
of
TTL
input
H-Sync
for
panel
V-Sync
for
panel
Ground
of
TTL
input
Data
Enable
for
panel
TXIN25
29
GND
30
TXIN26
Page
24
Confidential
-
Do
Not
Copy

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