IBM Aptiva 2198, Reference Manual

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Monitor screen
Do not use abrasive cleaners when cleaning the surface of the monitor
screen. The screen surface is easily scratched, so avoid touching it with
pens, pencil points, and erasers.
To clean the screen surface, wipe it gently with a soft, dry cloth, or blow on
the screen to remove grit and other loose particles. Then use a soft cloth
moistened with a nonabrasive liquid glass cleaner.
Mouse
If the pointer on the screen does not move smoothly with the mouse, you
might need to clean the mouse.
To clean your mouse:
1. Turn off the computer.
2. Disconnect the mouse cable from the computer.
3. Turn the mouse upside down. Unlock the retainer on the bottom of the
mouse by rotating it clockwise until the arrows align with the unlock
symbol.
Note: Some mouse types have retainers that are removed differently.
If your mouse does not have lock and unlock symbols, move the
retainer in the direction indicated by the arrow on the retainer.
4. Place your hand over the retainer and turn the mouse right-side up. The
retainer and ball will drop out into your hand.
5. Wash the ball in warm, soapy water and dry it well.
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Aptiva Reference Guide