5-3. KEY LOCKPress K.LOCK button for several secondsand then the message appears to confirm.If you click “OK”, it will lock all the keyfunction of DVR.appears on the screen while DVR isunder the Key Lock mode.To unlock, press K.LOCK button forseveral second and then input thed ( d)5-4. Playback1) Playback Jog / Shuttle Functionpassword (same as system password)Click the playback button, the recorded data on HDD will begin playback at X1 speed.Click the backward playback button, It will being to play backwards. Use the Jog/Shuttle topause, lower speed or Increase speed playback and pause.Press the ‘J.SHUTTLE’ button to activate the Jog/Shuttle, the LED will blink when it is1) Playback, Jog / Shuttle Functionavailable. To operate the Jog/Shuttle, turning the control knob to the right will control fast-forward playback, turning the control to the left, will control its reverse playback. Jog/shuttlewill control one camera at a time. Shuttle speeds are shown below.1/2, 1/4, 1/8, 1/16 : The speed is lower than Normal Playback speed. 1X : Normalplayback speed. 2, 4, 8, 32 : The speed is faster than Normal Playback speed.2) BOOKMARK FunctionWhile in playback mode, if you want to remember a certain point of the27recorded data, press “BOOKMARK” Button or click the icon. And then the timeand date will be added to the bookmark list.