Winbook XP5 User Manual page 71

The hinged panel that covers the drive opening will keep out most dust and dirt as long as it
is completely closed. The thing you need to be more careful of is the floppy disks
themselves. It won't matter if the panel keeps dust out if you put dirty disks in the drive.
PCMCIA Card Compartment
Always keep the compartment door shut when you aren't using any cards. If you have a card
installed in only one slot, be careful not to let the compartment get contaminated.
The Keyboard
Try to keep the keyboard as clean as possible. Don't eat or drink
over it and remove any dust or dirt that builds up, especially between the keys.
The Trackball
The trackball is susceptible to contamination inside its housing, just like a mouse is. You will
need to clean the housing occasionally. When the ball starts moving less easily and your
control of the
cursor becomes less precise, you know it is time to clean it. The next section explains how to
do it.
Cleaning the trackball is actually a two-part operation. You have to clean both the trackball and
the housing it sits in. Follow this procedure to do it:
1.Remove the trackball retaining ring. There is a small hole in the ring at the 12 o'clock position.
Stick the tip of a straightened paper clip in the hole, press down slightly and rotate the ring
counter-clockwise until the hole is at the 11 o'clock position. The ring will pop up a little and you
can take it off.
2.Remove and clean the trackball.With your hand covering the housing, remove the ball by
turning the computer over so the ball falls out into your hand. Rinse the ball in hot water then use
a clean, lint-free cloth to dry the ball. Wrap it in the cloth until you are ready to replace it.
3.Clean the housing.There are several bearings and rollers built into the side of the trackball
housing. Gently use a computer cleaning swab moistened with 91% isopropyl alcohol to clean
the bearings and the inner surface of the housing. Don't overdo it. Use as little pressure as will
get the job done. You can use more than one swab if necessary.
4.Replace the trackball and retaining ring. Drop the ball back into the housing and replace the
retaining ring so that the hole in the ring is at the 11 o'clock position. Insert the tip of the paper
clip in the hole, press down slightly and rotate the ring clockwise to the 12 o'clock position.
When you're finished, turn on the computer and test the trackball to make sure it's working
properly.