Mitsubishi Electric CX series Owner's Handbook Manual page 98

T r o u b l e s h o o t i n g
Mouse
If the screen cursor moves jerkily, the ball inside the mouse may
require cleaning. Open the base of the mouse can clean the ball in
water mixed with a small amount of mild detergent. Clean any
grease and dust from the rollers inside the mouse with a cotton swab
moistened with a solvent cleaner.
Keyboard
If the keyboard response is poor, something may be trapped under
the keys. Turn the keyboard upside down and shake it; do not
probe between the keys as this may cause further damage.
If you spill something on the keyboard and it stops working:




Expansion cards
If an expansion card does not work, check that all internal cables are
securely connected, that the card is configured correctly, that its use
of system resources does not conflict another card or motherboard
component, and that legacy resources (if it is an ISA card) are
properly declared in the BIOS Setup utility. Check also that the
software which drives or uses the card is correctly configured.
System BIOS
Use the BIOS Setup utility to ensure that the settings are correct. If
the settings appear to have altered, there may be a fault with the
CMOS battery which may need to be replaced (see the Motherboard
chapter for instructions).
8/4 OWNER'S HANDBOOK
If the liquid is viscous, unplug the keyboard and call your
supplier or maintenance provider.
If the liquid is thin and clear, try unplugging the keyboard,
turning it upside down to let the liquid drain out, and drying it
for at least 24 hours at room temperature. If the keyboard still
won't work, call your supplier or maintenance provider.