Operating Instructions and Installation Instructions
105 
Section 6: Basic GPS Operations 
This section addresses the unit's most basic GPS operations. Before you 
turn on the unit and find where you are, it's a good idea to learn about 
the different keys, the four Page screens and how they all work to-
gether. BUT, if you just can't wait to get outside, turn to the one-page 
Quick Reference on page 121. 
Keyboard 
LMS-525cDF sonar/GPS unit, front view, showing map with sonar split 
screen, keyboard and access door for the MMC slot. 
1. PWR/LIGHT (Power & Light) – The PWR key turns the unit on and 
off and activates the backlight. 
2.  PAGES – Pressing this and the ←  → arrow keys (4) switches the 
unit between the four different page screens. (Satellite Status Page, 
Navigation Page, Map Page and Sonar Page.) Each page represents one 
of the unit's major operation modes. 
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4
2
8
7
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MMC slot access door
1
9
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