21
Getting Started
Powering Off Unit
Congratulations! You’ve now gone through the basic operation of the Garmin GPSMAP 178C
Sounder. Your new digital chartplotter is a powerful tool with many advanced features not covered in
the Getting Started tour. For detailed instructions on using these features or performing a specifi c task,
please refer to the Quick Reference Guide or the appropriate reference section of this manual. The unit
is still in Simulator mode for practice, but automatically returns to it’s ‘Normal’ operation mode when
you shut it off and turn it back on.
To turn the GPSMAP 178C Sounder off:
1. Press and hold the
POWER
key for about 2 seconds, until the screen is blank.
2. When the screen is blank, release the
POWER
key.
The next section of the manual describes the pages and functions of the GPSMAP 178C Sounder in
detail. If you are unable to locate a specifi c option or function, please refer to the Index.
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