User manual

ARK-3389 User Manual 20
Please also refer to Chapter 6 “Full Disassembly Procedure of ARK-3389
Embedded Box Computer”.
The default setting of COM2 is RS-232. The RS-422/485 mode of COM2
can be support via replacing the internal cable and adjust the jumper
inside of system.
3.4 LCD Power Jumper Setting (JP6)
The ARK-3389 series of embedded box computers provide a jumper -
JP6 located on internal PCM-9380 or PCM-9386 motherboard for select-
ing the LCD signal power of either 5V or 3.3V. When you connect your
LVDS LCD Panel display, you need to set the JP6 LCD power setting
selection for your LVDS Panel display.
Please also refer to Chapter 6 of “Full Disassembly Procedure to set it up.
The default setting of JP6 is 5V.
3.5 Installing the DDR SDRAM Memory Module
The ARK-3389 provides one 200-pin SODIMM (Small Outline Dual
Inline Memory Module) socket and supports 2.5V DDR SDRAM. You
can install from 64 MB to 1 GB of DDR SDRAM memory.
The procedure of installing a DDR SDRAM SODIMM into the ARK-
3389 is detailed below, please follow these steps carefully.
1. Remove the power cord.
2. Unscrew the four screws from the bottom cover of the ARK-3389.
3. Remove the bottom cover.
4. Plug a DDR SDRAM SODIMM with your OS or application pro-
gram into a DDR SODIMM socket on board.
5. Screw back the bottom cover with four screws.
Table 3.2: LCD Power Setting (JP6)
Setting Function
1-2 +5 V
2-3 +3.3 V