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1. Gently wipe the display with a dry, soft lint-free cloth. If you see a scratchlike mark on your display,
it might be a stain transferred from the keyboard or the TrackPoint pointing stick when the cover was
pressed from the outside.
2. Wipe or dust the stain gently with a soft, dry cloth.
3. If the stain remains, moisten a soft, lint-free cloth with water or a 50-50 mixture of isopropyl alcohol and
water that does not contain impurities.
Note: Avoid spraying cleaner directly onto the display or the keyboard.
4. Wring out as much of the liquid as you can.
5. Wipe the display again; do not let any liquid drip into the computer.
6. Be sure to dry the display before closing it.
Chapter 8. Preventing problems 79