Lowrance electronic M56 - Manual (Page 37)

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Section 3:
Basic Sonar Operation
KEYBOARD BASICS
The unit sounds a tone when you press any key. This tells you the unit
has accepted a command. Numbers in the photo correspond to key ex-
planations below:
Lowrance M56 Sonar, front view, showing screen and keyboard.
(A close-up of the keyboard can be found at the beginning of Sec. 6)
1. PWR (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 be-
tween the different page display screens. (There are four GPS Pages
and four Sonar Page display options.) Each set of pages represents one
of the unit's major operation modes.
3. MENU – Press this key to show the menus and submenus, which
allow you to select a command or adjust a feature. This also accesses
search functions for streets and intersections.
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