Chapter 3. Maintaining The Ibm 4820; Maximizing Your Comfort; Cleaning The Touch Screen; Using The Brightness Controls - IBM 4820 Planning, Installation And Service Manual

Update November 2005

Chapter 3. Maintaining the IBM 4820

Maximizing your comfort

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Cleaning the touch screen

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Using the brightness controls

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© Copyright IBM Corp. 1999, 2005
Note: Information in this chapter is for all models of the 4820 SurePoint Solution.
Before you begin using your display, follow these tips to ensure that you are
comfortable:
v Keep your head in a comfortable viewing position.
v Maintain a comfortable viewing distance.
v Position the display to avoid glare or reflection from overhead lighting or outside
sources of light.
v Keep the screen free of dust and dirt by regularly cleaning the surface with a
soft, dry cloth (see "Cleaning the touch screen").
v Set the brightness levels that allow you to see clearly.
v With your finger, press the touch screen only as hard as necessary for use. Do
not pound on the touch screen.
v Do not use a pen to press the touch screen.
Note: Except for Models 2xx and 5xx, you cannot activate the touch sensors
with any pointing aid except your finger.
Keeping the touch screen free from dirt and dust allows the touch sensor to operate
efficiently. Follow these guidelines:
Note: Before cleaning the touch screen, power off the 4820 SurePoint Solution.
v Use a soft, dry cloth with isopropyl alcohol (or any non abrasive cleaner that
does not contain ammonia or chlorine).
Attention: Do not apply cleaning solution directly to the screen. Always spray
the cleaner on a clean cloth and then wipe the screen.
v Wipe gently across the surface.
v Allow a few minutes for the surface to dry before using.
Pressing the plus (+) or the minus (-) button adjusts the screen brightness.
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Figure 58. Brightness adjustment panel
As you press the (+) button or the (-) button, the panel displays the level of
brightness. When you reach the desired level, stop pressing the keys. After
approximately 5 seconds, your values are saved and the brightness adjustment
panel closes. (On models 2xx and 5xx, press the plus and minus buttons
simultaneously to save your values and exit.)
Brightness
Adjust
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