Lenovo ThinkPad P40 Yoga User Manual page 107

Cleaning your computer display
To clean the computer display, do the following:
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 7 Preventing problems
91