Freedom Scientific PKMag 50, Руководство пользователя

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Cleaning the LCD Screen
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Turn off and unplug the unit before cleaning the LCD screen.
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Always use a clean microfiber cloth.
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Very gently wipe the cloth across the screen. Do not press hard on the cloth or screen.

If you use a cleaning liquid, use an appropriate LCD cleaning liquid. You can also use
distilled water, isopropyl alcohol, or vinegar mixed with water at a concentration of no more
than 10 percent vinegar. Note that tap or mineral water may cause spotting on the screen.
Do not leave any liquid on the screen. Repeat this procedure for hard to remove smudges.

Do not spray any cleaning solutions directly on the LCD screen.

Do not use a cleanser that contains acetone, ethyl alcohol, ethyl acid, ammonia, or methyl
chloride.

Do not use a paper towel to clean the LCD screen.
Cleaning the PKMag 50 Body

Make sure the unit is unplugged. Use a lightly dampened, soft, clean cloth with water or mild
detergent. Do not use alcohol, solvents, abrasives, or aerosol sprays.