BlankBlankPowerMenuKeystoneAutoEnterSourceVolume MuteFreeze1 2781312111091234566/9 7/10 3/5 2 4/8 13 12 1 11POWERSOURCEAUTOMENUPOWERREADY POWERSOURCEAUTOMENU1 Auto Auto adjustment for phase, tracking, size, and position2 Enter Changes On-screen Display settings.3 Up cursor Navigates and changes On-screen Display settings. Opens keystone quick menu whenOn-screen Display is off.4 Right cursor Navigates and changes On-screen Display settings. Right arrow when connectedthrough USB to a computer and when On-screen Display is off.5 Keystone top Corrects image trapezoid effect (widens top).6 Keystone bottom Corrects image trapezoid effect (widens bottom).7 Volume down Turns down the volume.8 Volume up Turns up the volume.9 Down cursor Navigates and changes On-screen Display settings. Down arrow when connectedthrough USB to a computer and when On-screen Display is off.10 Left cursor Navigates and changes On-screen Display settings. Left arrow when connectedthrough USB to a computer and when On-screen Display is off.11 Menu Opens and navigates the On-screen Display.12 Source Detects or switches input device.13 Power Turns the projector on or off4-4 Lenovo C500 Projector User’s Guide