Lenovo C3/C4/C5 Series User Guide
Page 36
... where you are connected to show the hidden icons in Windows desktop mode, then click the speaker icon. In "Tablet PC Settings" dialogue, click "Calibrate" button. User Guide 31 If the problem persists, contact Lenovo Service. In "Hardware and Sound" window, select "Tablet PC Settings". 3. Adjust the volume, bass, or treble controls to see...
... where you are connected to show the hidden icons in Windows desktop mode, then click the speaker icon. In "Tablet PC Settings" dialogue, click "Calibrate" button. User Guide 31 If the problem persists, contact Lenovo Service. In "Hardware and Sound" window, select "Tablet PC Settings". 3. Adjust the volume, bass, or treble controls to see...