ViewSonic VP150M Service Manual - Page 33

ViewSonic VP150M - 15" LCD Monitor Manual

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Service Manual VP150m THEORY OF CIRCUIT OPERATION ViewSonic September 2000 - Version 1.0 Symbol R_IN01 R_IN02 R_IN03 VDD R_IN04 R_IN05 R_IN06 R_IN07 R_IN10 R_IN11 GND R_IN12 R_IN13 VDD R_IN14 R_IN15 R_IN16 R_IN17 GND G_IN00 G_IN01 G_IN02 G_IN03 VDD G_IN04 G_IN05 ADC_CLKO G_IN06 G_INO7 GND G_IN10 G_IN11 ADC_CLK1 G_IN12 G_IN133 VDD G_IN14 G_IN15 G_IN16 G_IN17 Pin Number 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 I/O Description I Channel A Data Input Color Red I Channel A Data Input Color Red I Channel A Data Input Color Red Power Supply I Channel A Data Input Color Red I Channel A Data Input Color Red I Channel A Data Input Color Red I Channel A Data Input Color Red (MSB) I Channel B Data Input Color Red (LSB) I Channel B Data Input Color Red Ground I Channel B Data Input Color Red I Channel B Data Input Color Red Power Supply I Channel B Data Input Color Red I Channel B Data Input Color Red I Channel B Data Input Color Red I Channel B Data Input Color Red (MSB) Ground I Channel A Data Input Color Green (LSB) I Channel A Data Input Color Green I Channel A Data Input Color Green I Channel A Data Input Color Green Power Supply I Channel A Data Input Color Green I Channel A Data Input Color Green O Sample Clock for ADC 0 I Channel A Data Input Color Green I Channel A Data Input Color Green (MSB) Ground I Channel B Data Input Color Green (LSB) I Channel B Data Input Color Green O Sample Clock for ADC 1 I Channel B Data Input Color Green I Channel B Data Input Color Green Power Supply I Channel B Data Input Color Green I Channel B Data Input Color Green I Channel B Data Input Color Green I Channel B Data Input Color Green (MSB) Page 32 Confidential - Do Not Copy

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Service
Manual
VP150m
ViewSonic
September
2000
-
Version
1.0
THEORY
OF
CIRCUIT
OPERATION
Symbol
Pin
Number
I/O
Description
R_IN01
106
I
Channel
A
Data
Input
Color
Red
R_IN02
107
I
Channel
A
Data
Input
Color
Red
R_IN03
108
I
Channel
A
Data
Input
Color
Red
VDD
109
Power
Supply
R_IN04
110
I
Channel
A
Data
Input
Color
Red
R_IN05
111
I
Channel
A
Data
Input
Color
Red
R_IN06
112
I
Channel
A
Data
Input
Color
Red
R_IN07
113
I
Channel
A
Data
Input
Color
Red
(MSB)
R_IN10
114
I
Channel
B
Data
Input
Color
Red
(LSB)
R_IN11
115
I
Channel
B
Data
Input
Color
Red
GND
116
Ground
R_IN12
117
I
Channel
B
Data
Input
Color
Red
R_IN13
118
I
Channel
B
Data
Input
Color
Red
VDD
119
Power
Supply
R_IN14
120
I
Channel
B
Data
Input
Color
Red
R_IN15
121
I
Channel
B
Data
Input
Color
Red
R_IN16
122
I
Channel
B
Data
Input
Color
Red
R_IN17
123
I
Channel
B
Data
Input
Color
Red
(MSB)
GND
124
Ground
G_IN00
125
I
Channel
A
Data
Input
Color
Green
(LSB)
G_IN01
126
I
Channel
A
Data
Input
Color
Green
G_IN02
127
I
Channel
A
Data
Input
Color
Green
G_IN03
128
I
Channel
A
Data
Input
Color
Green
VDD
129
Power
Supply
G_IN04
130
I
Channel
A
Data
Input
Color
Green
G_IN05
131
I
Channel
A
Data
Input
Color
Green
ADC_CLKO
132
O
Sample
Clock
for
ADC
0
G_IN06
133
I
Channel
A
Data
Input
Color
Green
G_INO7
134
I
Channel
A
Data
Input
Color
Green
(MSB)
GND
135
Ground
G_IN10
136
I
Channel
B
Data
Input
Color
Green
(LSB)
G_IN11
137
I
Channel
B
Data
Input
Color
Green
ADC_CLK1
138
O
Sample
Clock
for
ADC
1
G_IN12
139
I
Channel
B
Data
Input
Color
Green
G_IN133
140
I
Channel
B
Data
Input
Color
Green
VDD
141
Power
Supply
G_IN14
142
I
Channel
B
Data
Input
Color
Green
G_IN15
143
I
Channel
B
Data
Input
Color
Green
G_IN16
144
I
Channel
B
Data
Input
Color
Green
G_IN17
145
I
Channel
B
Data
Input
Color
Green
(MSB)
Page
32
Confidential
—
Do
Not
Copy