EVOC EC4-1812CLDNA, Manual, Page: 11 / 68

Chapter 2 Installation
EC4­1812CLDNA ­ 7 ­
JLCD1: LVDS Operating Voltage Selection
The board provides two voltage options, 3.3V and 5V. Only when the selected LCD
voltage is in accord with the LCD voltage in use, the LCD screen could display
normally.
Setup Function
1­2 Short +3.3V (Default)
JLCD1 2­3 Short +5V
Interface for Power, Hard Disk, Wireless Network Card Indicators
Pin Signal Name Pin Signal Name
1 FP_IDE_LED­ 2 FP_
3 POWER_LED­ 4 PO
LED2
5 WLAN_LED­ 6 W
LVDS Backlight Control
Pin Signal Name
1 VCC_LCDBKLT
2 LCD_BKLTCTL
3 LCD_BKLTEN
LCDB1
4 GND
Note: VCC_LCDBKLT­­­­backlight power (power voltage is controlled by the
backlight voltage selecting jumper);
LCD_BKLTCTL­­­backlight control;
LCD_BKLTEN ­­­­ backlight enabling.