Toshiba Satellite A500 Service Manual page 231

Appendices
3. If the panel's surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty,
try breathing on the surface to create a light condensate and wipe it again.
If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to
a cloth and then wipe the panel's surface. Do not apply cleanser directly to the panel.
Also, never scratch the surface.
4. If water or other liquid is left on the panel's surface for a long period, it can change
the screen's tint or stain it. Be sure to quickly wipe off any liquid.
A-2 Satellite/Satellite Pro/A500/A505/A507/dynabook
Apx. A Handling the LCD Module
Maintenance Manual