Operational Instructions - Humminbird LCR 4000 Operation Manual

USING THE LCR 4000

OPERATIONAL INSTRUCTIONS

OPERATIONAL INSTRUCTIONS FOR LCR4000
The Humminbird LCR4000 will operate fully automatic or manual at the discretion of the
operator. At the heart of the LCR is a microcomputer which is making thousands of
decisions every second. With the LCR4000'S automatic features you will quickly and
easily learn the basics of operating your unit, and after a couple of trips on the water
you'll be operating the LCR4000 like an expert. It is suggested that you familiarize
yourself with each of the features and controls prior to operating your LCR4000.
1. Power: To activate the unit, depress the power "On" switch. The LCR4000 always
comes on in the automatic mode. In the automatic mode, the unit will find the bottom by
varying the sensitivity and selecting the proper depth range for a satisfactory return.
Also, the display below the bottom is blacked out to make the display easier to read.
To turn the unit off, depress the power "Off" switch.
2. Depth: In the automatic mode, the proper depth range is found as soon as the unit
is turned on. As you move into deeper water and the bottom goes off the screen, the
next deeper range will automatically be activated. Also, as you move into shallower
water and the bottom is within about ten dots to the top of the screen, the depth range
will automatically change to the next shallower scale.