Lenovo ThinkCentre M71z User Manual page 31

Machine types: 1654, 1664, 1665, 1677, 1738, 1739, 1741, 1761, 1762, 1763, 1782, 1837, 1938, 1942, 1962, and 1966
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3. Press the brightness-down button to decrease the brightness level, or press the brightness-up button to
increase the brightness level.
4. Wait for five seconds to exit.
19
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Chapter 2
Using your computer

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