S y s t e m m o t h e r b o a r d
5/6 LS/VS550 OWNER’S HANDBOOK
Replacing the CMOS battery
The battery is a 3 volt lithium type (CR2032 or equivalent)
typically used in calculators, watches and other small, battery-
powered electronic items. The average battery life is between 3
and 5 years.
Read carefully the following instructions before commencing work.
1. Turn off the computer and unplug all power cords. Take
suitable anti-static precautions and remove the system unit
cover.
2. Identify the battery holder, identified at position ‘26’ on the
motherboard diagram.
3. Carefully disconnect and remove any expansion cards that may
obstruct easy access to the battery. Take note of any cable
positions before removal.
Warning
Warning
Do
not
use a metal or other conductive implement to remove the
battery. If a short-circuit is accidentally made between its positive and
negative terminals, it may cause the battery to explode.
4. Lift the edge of the battery far enough to clear the base of the
holder, then slide the battery from under the contact spring.
5. Taking care not to touch the top or bottom surface of the
battery, pick up the replacement with the positive (+) terminal
upwards and slide the battery into the holder from the same
side the old battery was removed.
6. Replace any expansion cards you had to remove in step 4 and
replace the system unit cover.
7. Dispose of the old battery according to the makers
instructions.
When you next turn on the computer you will have to run the
BIOS Set-up utility to enter the hardware configuration. See
‘
System BIOS and set-up’
for guidance.
