ViewSonic VX500 Service Manual - Page 19

Audio, Switch, Board, Header, CONB2, Connector, Panel

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10 GND 11 GND 12 VSDA 13 HSYIN 14 VSYIN 15 V SCL Ground Ground VSDA H-Sync V-Sync Clock Line (SCL) JB1: Audio Line In Pin # 1 2 3 4 5 6 7 8 9 10 11 12 Signal Name GND RX1 - SW7 R120 - SW1 R121 - SW2 R122 - SW3 R123 - SW4 RX2 - SW6 NC R53 - SW5 R308 - LED R309 - LED R54 - PWR P2: Switch Board Pin Header Function GROUND Volume Down OSD Key ADDITION Key SUBTRACTION Key DOWN Key MUTE No Connect Volume Up LED LED Power Switch Pin # 1 2 3 4 5 6 CONB2: Audio Board Connector Signal Name Function Right Out + Right Out + Left Out + Left Out + NC No Connect NC No Connect Speaker Right Speaker Right Out - Out - Speaker Left Out Speaker Left Out Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Signal Name VDDSAFE VDDSAFE GND FSHFCLK GND FVSYNC FHSYNC FDE GND FPO FP1 FP2 FP3 FP4 FP5 GND FP8 FP9 FP10 FP11 FP12 ViewSonic Corporation P4: LCD Panel Function + 3.3V power supply + 3.3V power supply Ground Ground Ground Must be fixed to 0 V Must be fixed to 0 V Data enable signal Ground Red even data 0 Red even data 1 Red even data 2 Red even data 3 Red even data 4 Red even data 5 Ground Green even data 0 Green even data 1 Green even data 2 Green even data 3 Green even data 4 16 Confidential - Do Not Copy VX500-1

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10
GND
Ground
11
GND
Ground
12
VSDA
VSDA
13
HSYIN
H
-Sync
14
VSYIN
V
-Sync
15
V
SCL
Clock
Line
(SCL)
JB1:
Audio
Line
In
P2:
Switch
Board
Pin
Header
Pin
#
Signal
Name
Function
1
GND
GROUND
2
RX1
-
SW7
Volume
Down
3
R120
-
SW1
OSD
Key
4
R121
-
SW2
ADDITION
Key
5
R122
-
SW3
SUBTRACTION
Key
6
R123
-
SW4
DOWN
Key
7
RX2
—
SW6
MUTE
8
NC
No
Connect
9
R53
-
SW5
Volume
Up
10
R308
-
LED
LED
11
R309
-
LED
LED
12
R54
-
PWR
Power
Switch
CONB2:
Audio
Board
Connector
Pin
#
Signal
Name
Function
1
Right
Out
+
Right
Out
+
2
Left
Out
+
Left
Out
+
3
NC
No
Connect
4
NC
No
Connect
5
Speaker
Right
Out
-
Speaker
Right
Out
-
6
Speaker
Left
Out
Speaker
Left
Out
P4:
LCD
Panel
Pin
#
Signal
Name
Function
1
VDDSAFE
+
3.3V
power
supply
2
VDDSAFE
+
3.3V
power
supply
3
GND
Ground
4
FSHFCLK
Ground
5
GND
Ground
6
FVSYNC
Must
be
fixed
to
0
V
7
FHSYNC
Must
be
fixed
to
0
V
8
FDE
Data
enable
signal
9
GND
Ground
10
FPO
Red
even
data
0
11
FP1
Red
even
data
1
12
FP2
Red
even
data
2
13
FP3
Red
even
data
3
14
FP4
Red
even
data
4
15
FP5
Red
even
data
5
16
GND
Ground
17
FP8
Green
even
data
0
18
FP9
Green
even
data
1
19
FP10
Green
even
data
2
20
FP11
Green
even
data
3
21
FP12
Green
even
data
4
ViewSonic
Corporation
16
Confidential
—
Do
Not
Copy
VX500-1