HP L1740 User Manual page 19

Setting Up the Monitor
Pivoting the Monitor
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CAUTION: Burn-in image damage may occur on monitors that
display the same static image on screen for a prolonged period of
time. To avoid burn-in image damage on your monitor screen, you
should always activate a screen saver application or turn off the
monitor when it is not in use for a prolonged period of time.
User Guide 3–9