ViewSonic VE150m Service Manual page 26

4.1.2 CON4: Switch Board Pin Header
Pin # Signal Name Function
1 GND
2 RX1 - SW7
3 R120 - SW1
4 R121 – SW2
5 R122 – SW3
6 R123 – SW4
7 RX2 – SW6
8 NC
9 R53 – SW5
10 R308 - LED
11 R309 – LED
12 R54 - PWR
4.1.3 CON 5 Inverter Connector
Pin # Signal Name Function
1 VCC
2 VCC
3 GND
4 GND
5 INV-PWR
6 GND
7 BRINS
8
PWM0
NC
PENBKL
GND
ViewSonic Corporation
GROUND
Volume Down
OSD Key
ADDITION Key
SUBTRACTION Key
DOWN Key
MUTE
No Connect
Volume Up
LED
LED
Power Switch
+12 V power supply
+12 V power supply
GROUND
GROUND
INVERTER POWER
GROUND
Dimming (Brightness) Control
No Connect
On/Off control
GROUND
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