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VC31 Mainboard Manual
Clear CMOS: SW1-1
The CMOS RAM is powered by the onboard button cell battery. To clear the
RTC data: (1) Turn off your computer. (2) Move the CMOS Clear switch SW1-
1 to On (Enabled). (3) Turn on your computer to display CMOS checksum
error. (4) Turn off your computer. (5) Move the CMOS Clear switch SW1-1 to
Off (Disabled). (6) Turn on your computer. (7) Hold down the
Delete
key
when boots. (8) Enter the BIOS Setup to re-enter user preferences.
1). Set System Jumpers/Switches
Jumpers are used to select the operation modes for your system. Some jump-
ers on the board have three metal pins with each pin representing a different
function. A 1 is written besides pin 1 on jumpers with three pins. To
set
a
jumper, a black cap containing metal contacts is placed over the jumper pin/s
according to the required configuration. A jumper is said to be
shorted
when
the black cap has been placed on one or two of its pins. The types of jumpers
used in this manual are shown below:
NOTE: Users are not encouraged to change the jumper settings
not listed in this manual. Changing the jumper settings improperly
may adversely affect system performance.
3).
CPU Fan Installation
This connector is linked to the CPU fan. When the system is in some power saving
mode, the CPU fan will turn off; when it reverts back to full on mode, the fan will turn
back on.
Without sufficient air circulation, the CPU may overheat resulting in
damage to both the CPU and the mainboard.
Damage may occur to the mainboard and/or the CPU fan if these pins are
used incorrectly. These are not jumpers, do not place jumper caps over these
pins.
