Compaq Armada 1100 Reference Manual page 116

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Cleaning Inside the Trackball Assembly
To remove dust and build-up on the inside surfaces of the
trackball assembly:
1. Ensure that the computer is off, the battery pack is removed,
the AC Adapter is disconnected, and the ball is removed.
2. Remove any large particles of debris that have fallen into the
trackball housing.
3. Carefully wipe inside the cage to remove residue from the
surfaces.
4. Clean the ball bearings n by rubbing with a cotton swab. Do
not attempt to remove the bearings. Do not use alcohol on the
sensor window o. Instead, gently wipe the sensor window
with a soft, dry, lint-free cloth until all debris is removed.
Optical Trackball
CAUTION: To avoid damage to the computer, do not use alcohol
on the sensor window.
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Troubleshooting 11-21