2
GPSMAP 4000 Series Owner’s Manual
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Power/Backlight
To turn the chartplotter on, press and release the
Power
key. When the Warning screen appears,
press
SELECT
to open the Home screen.
NOTE:
The first time you power on your unit, you must go through a setup sequence. See
for
details.
Warning Screen
Home Screen
To turn the chartplotter off, press and hold the
Power
key.
Adjusting the Backlight
1. While the unit is on, press and release the
Power
key.
2. Select
Backlight
.
To allow the unit to automatically adjust the backlight based on ambient light, select
Auto
.
To manually adjust the backlight,
either select
Up
or
Down
, or use
the
ROCKER
.
To return to the previous screen,
select
Back
.
Adjusting the Color Mode
1. Press and release the
POWER
key.
2. Select
Color Mode
.
3. Select
Day Colors
,
Night Colors
, or
Auto
.
Acquiring GPS Satellite Signals
When you turn the unit on, the GPS receiver must collect satellite data and establish its current
location. When the unit acquires satellite signals, the signal strength bars at the top of the Home
screen are green
. When the unit loses satellite signals, the green bars disappear
and a
flashing question mark is indicated on the boat icon (on the chart screen).
