AR-B1476 User
’
s Guide
4-2
The block diagram shows that the AR-B1476 still needs components to use with a LCD panel. The inverter board
provides the control for the brightness and the contrast of the LCD panel. The inverter is also the components that
supply the high voltage to drive the LCD panel. Each item will be explained further in the section.
Pin 1
AR-B1476
CPU Board
Pin 1
CN3
LCD
Panel
Inverter & Contrast
J5
Figure 4-3 LCD Panel Cable Installation Diagram
NOTE:
Be careful with the pin orientation when installing connectors and the cables. A wrong connection can easily
destroy your LCD panel. Pin 1 of the cable connector is indicated with a sticker and pin1 of the ribbon
cable is usually has a different color.
4.2.1 Inverter Board Description
The inverter board supplies high voltage signals to drive the LCD panel by converting the 12 volt signal from the
AR-B1476 into a high voltage AC signal for LCD panel. It can be installed freely on the space provided over the
VR board. If the VR board is installed on the bracket, you have to provide a place to install the inverter board into
your system.
4.2.2 LCD Connector
(1) DE/E Signal from M or LP Select (JP3)
Factory Preset
1
2
3
1
2
3
E/LP
DE/M
Figure 4-4 JP3: DE/E Signal from M or LP
(2) LCD Control Connector (J5)
J5 is a 5-pin connector that attaches to the Contrast and Backlight board. Its pin assignment is shown below:
1
2
3
4
5
1 ENABLK
2 ENVEE
3 +12V
4 GND
5 VEE
Figure 4-5 J5: LCD Control Connector
(3) Touch Screen Connector (J11)
1
2
3
1 RXD
2 TXD
3 GND
Figure 4-6 J11: Touch Screen Connector
