Toshiba 386SX - Manual (Page 31)

AR-B1375/AR-B1376 User s Guide
4-3
Pin 1
AR-B1376
CPU Board
Pin 1
CN8
LCD
Panel
Inverter & Contrast
CN9
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 is the one that supplies the high voltage signals to drive the LCD panel by converting the 12 volt
signal from the AR-B1376 into 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
The AR-B1376 supports CRT colored monitor, STN, Dual-Scan, TFT, monochrome and color panels. It can be
connected to create a compact video solution for the industrial environment. 1MB of RAM on-boarded allows a
maximum CRT resolution of 1024X768 and a LCD resolution of 640X480 with 64K colors. For different VGA
display modes, your monitor must possess certain characteristics to display the mode you want.
(1) DE/E Signal from M or LP Select (JP6)
JP6
DE/M E/LP
(Factory Preset)
1 2 3 1 2 3
Figure 4-4 JP6: DE/E Signal from M or LP Select
(2) LCD Control Connector (CN9)
CN9 is a 5-pin connector that attaches to the Contrast and Backlight board; its pin assignment is shown below:
NOTE: AR-B1375 doesn’t provide this function.
1
2
3
4
5 ENABLK
ENVEE
+12V
GND
VEE
Figure 4-5 CN9: LCD Control Connector