GPSMAP 4000 Series Owner’s Manual 3Getting StartedGettinGS tartedAcquiring GPS Satellite SignalsWhen you turn on the chartplotter, the GPS receiver must collect satellite data and establish itscurrent location. When the chartplotter acquires satellite signals, the signal strength bars at the topof the Home screen are green . When the chartplotter loses satellite signals, the green barsdisappear and a flashing question mark appears on the boat icon on the Chart screen.For more information about GPS, visit the Garmin Web site at www.garmin.com/aboutGPS.Adjusting the Backlight1. While the chartplotter is on, press and quickly release the Power key.2. Select Backlight.3. Select an option to adjust the backlight:To allow the chartplotter to automatically adjust the backlight based on ambient light, selectAuto.To manually adjust the backlight, select Up or Down, or use the Rocker.Adjusting the Color Mode1. Press and quickly release the Power key.2. Select Color Mode.3. Select Day Colors, Night Colors, or Auto.Inserting and Removing SD CardsYour chartplotter supports Secure Digital (SD) cards. Insert optional BlueChart® g2 Vision® SDcards to view high-resolution satellite imagery and aerial reference photos of ports, harbors, marinas,and other points of interest. Insert blank SD cards to transfer data such as waypoints, routes, andtracks to another compatible Garmin device or a computer. The SD card slot is located on thebottom-right corner of the chartplotter.To insert the SD card, open the access door and press the SD card in until it clicks.To eject the SD card, press the card in again and release it.••••
