Humminbird 4089901 Marine GPS System User Manual


 
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Key Functions
Your Fishfinder user interface consists of a set of easy-to-use keys that work
with various on-screen views and menus to give you flexibility and control over
your fishing experience.
POWER/LIGHT Key
The POWER/LIGHT key is used to power the Fishfinder on and off.
You can also use the POWER/LIGHT key to adjust the backlight
and contrast of the display.
Power On the control head: Press the POWER/LIGHT key to power on the unit.
When the Title screen is displayed, press the MENU key to access the Start-Up
Options Menu.
Power Off the control head: Press and hold the POWER/LIGHT key for 3
seconds. A message will appear to indicate how many seconds there are until
shutdown occurs. To ensure that shutdown occurs properly and any menu
settings will be saved, your Fishfinder should always be turned off using the
POWER/LIGHT key.
Adjust the Backlight or the Display Contrast:
Press the POWER/LIGHT key to access the Light
and Contrast submenu. Use the 4-WAY Cursor
Control key to select Light or Contrast, and then
use the LEFT or RIGHT Cursor key to change the
settings. Press EXIT to exit the Light and Contrast
submenu.
NOTE: Your 500 Series Fishfinder will start up with the backlight on and will
automatically turn it off to conserve power.
Key Functions