Installation Instructions
EC3-1820V2NA
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Tip: How to identify the first pin of the jumpers and connectors
1.
Observe the letter beside the socket, the first pin is usually marked with “1” or
bold lines or triangular symbols;
2.
Observe the solder pad on the back: usually the square pad is the first pin.
2.5 Jumper Setting
1.
JCC1: Clear/Keep CMOS Setting (Pitch: 2.0mm)
CMOS is powered by the button battery on board. Clearing CMOS will restore
original settings (factory default). The steps are listed as follows: (1) Turn off the
computer and unplug the power cable; (2) Instantly short circuit JCC1; (3) Turn on
the computer; (4) Follow the prompt on screen to enter BIOS setup when booting the
computer, load optimized defaults; (5) Save and exit. Please set as follows:
Setup
Function
1-2 Open
Normal (Default)
JCC1
1-2 Short
Clear the contents of CMOS and all BIOS settings
will restore to factory default values.
2.
JLCD1
：
LCD Working Voltage Selection (pitch: 2.0mm)
Different LCD screens may have different voltages. This board provides two voltage
options: 3.3V and 5V. Only when the selected LCD voltage is consistent with that of
LCD screen, can LCD screen give normal display. Its setup method is as follows:
Setup
Function
1-2 Open
+3.3V(Default)
JLCD1
2-3 Short
+5V
