HP Armada 4200 Armada 4200 Family of Personal Computers Reference Guide - Page 134

Cleaning Inside the Trackball Assembly

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Cleaning Inside the Trackball Assembly To remove dust and buildup on the inside surfaces of the trackball: 1. Turn off the computer. Remove battery packs. Disconnect external devices. Remove the trackball. 2. Remove any large particles of debris that have fallen into the trackball housing. 3. Dip a cotton swab in isopropyl alcohol and squeeze off the excess liquid. 1 4. Carefully wipe inside the cage to remove residue from the surfaces. Clean the ball bearings by rubbing with the 2 swab. Do not attempt to remove the bearings. Do not use alcohol on the sensor window . Instead, gently wipe the sensor window with a soft, dry, lint-free cloth until all debris is removed. Cleaning Inside the Trackball CAUTION: To avoid damage to the computer, do not use alcohol on the sensor window. 5. Allow the parts to air dry before reassembling. 6. Replace the ball in the trackball cage. 15-22 Troubleshooting

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15-22
Troubleshooting
Cleaning Inside the Trackball Assembly
To remove dust and buildup on the inside surfaces of the
trackball:
1. Turn off the computer. Remove battery packs. Disconnect
external devices. Remove the trackball.
2. Remove any large particles of debris that have fallen into the
trackball housing.
3. Dip a cotton swab in isopropyl alcohol and squeeze off the
excess liquid.
4.
Carefully wipe inside the cage to remove residue from the
surfaces. Clean the ball bearings
by rubbing with the
swab. Do not attempt to remove the bearings. Do not use
alcohol on the sensor window
. Instead, gently wipe the
sensor window with a soft, dry, lint-free cloth until all debris
is removed.
Cleaning Inside the Trackball
CAUTION:
To avoid damage to the computer, do not use alcohol
on the sensor window.
5. Allow the parts to air dry before reassembling.
6. Replace the ball in the trackball cage.