5
Getting Started
Unit Overview
Backlight
Adjustment Slider
Volume
Adjustment Slider
Battery time remaining and power source indicator
Adjusting the Backlight and Volume
You may want to adjust the backlight to see the display better.
To adjust the backlight level:
1. Press and quickly release the POWER key.
2. Press the
ARROW KEYPAD UP to increase the brightness or DOWN to decrease the brightness.
3. Press
ENTER/MARK or QUIT to close the Backlight/Volume adjustment window.
If you are using the optional External Speaker with 12/24-Volt Adapter Cable with the GPSMAP
276C, you may want to adjust the volume level of the speaker.
To adjust the speaker volume:
1. Press and quickly release the POWER key.
2. Press the
ARROW KEYPAD RIGHT to increase the volume (louder) or LEFT to decrease the volume
(softer).
3. Press
ENTER/MARK or QUIT to close the Backlight/Volume adjustment window.
190-00335-00_0A.indd 5 4/7/2004, 1:50:07 PM
