4 GPSMAP 3005C Owner’s ManualGETTING STARTED > TURNING ON THE GPSMAP 3005CTurning on the GPSMAP 3005CBefore you turn on the GPSMAP 3005C, make sure the unit and GPS 17 antennaare correctly installed on your vessel according to the instructions in theGPSMAP 3005C & GPS 17 Installation Instructions.The first time you turn on the GPSMAP 3005C, the GPS 17 receiver must collectsatellite data and determine its current location. To ensure proper initialization,the GPSMAP 3005C is shipped from the factory in AutoLocate mode.To turn on the GPSMAP 3005C:1. Press and hold the POWER key until the unit turns on.2. When I Agree is highlighted on the Warning Page, press ENTER to openthe Map Page.To turn off the GPSMAP 3005C:Press and hold the POWER key until the unit turns off.Adjusting the BacklightYou can adjust the screen backlighting on the GPSMAP 3005C from any page byusing the POWER/BACKLIGHT key.To adjust the backlight level:1. Press and release the POWER/BACKLIGHT key.2. Press up on the ROCKER to increase the brightness, or press down todecrease.TIP: After you open the Backlight adjustment window, press thePOWER/BACKLIGHT key repeatedly to cycle through the threebacklight settings: Highest, Middle, and Lowest.Highest Middle Lowest3. Press ENTER or QUIT to close the Backlight adjustment window.
