6Basic OperationsTurn on/off the Power1. Press to turn on the unit.The unit goes back to the last status afterpower on.2. Press more than two secnonds to poweroff.MutePress the button to cut the sound.Note:• Doing the operation above again oradjusting volume will release muting.• Mute icon appears on the TFT duringmuting.Adjust the VolumeRotate the knob on the panel or press VOL +/-on the remote control to increase or decreasethe volume.The adjustable range of volume is 0 to 39.Playing Source SelectionMethod 1Short press the SRC button on the panelor remote control to cycle through all theavailable sources.Method 2In any mode, long press the SRC button onthe panel or remote control to enter mainsource menu, then use navigate button toselect the desired mode, and press OK toconfirm.Note:• When some devices are not ready, theycannot be selected.• You should stop switching when the playingsource you desired has been selected andwait for some seconds, the unit will autoenter the playing source mode you haveselected.When Parking Brake Applied1. If 'PRK SW' cable is connected to handbrake switch, the video display of the TFTmonitor will be controlled by driving status,system setup and input video sources.2. When the car is moving ahead, if thevideo file is played, the screen appears“WARNING: Engage Parking Brake to ViewVideo”. The above warning screen willprevent the driver watching images. Thepassengers at the rear seats can watchnormally.When Reverse DrivingIf the rear view video camera is connected,the unit automatically switches to CAMERAsource during reverse driving. The unit returnsto the original work mode after the reversedriving is done.