Lenovo 3000 Series - Manual (Page 11)

Lenovo Notebook Computer User Guide
Hint: If your computer stops responding, and you can’t turn
it off, then press and hold the Power Switch for more than 4
seconds. If the system still can’t be powered off, then
remove the AC adapter and the battery.
1.1.22 Audio volume status LED indicator
The six Volume status LED indicators indicate the audio volume
adjust status. Use the Shuttle or [Fn] + [→][←] to adjust the audio
volume.
1.1.23 Shuttle
Up/Down OK
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