Humminbird 4000 User Guide

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USING THE LCR 4000 
INTRODUCTION 
 
Before attempting to install or operate your Humminbird LCR, it is recommended that 
you read the operations manual thoroughly. The LCR is a totally new concept in sonar 
and has a number of special features not found on any other recorder. To completely 
understand all the features of your unit, we suggest you follow the instructions set forth 
in this manual. If after reading the instructions, there is something you do not completely 
understand about the operations of your unit, we recommend you contact our customer 
service department- CALL (334)687-0503. 
 
INTRODUCTION
 
 
Congratulations on selecting the most advanced piece of sonar equipment ever 
designed. 
 
Your new Humminbird LCR
 (Liquid Crystal Recorder) incorporates the most advanced, 
innovative concepts in sonar equipment. The LCR is probably the most intelligent depth 
sounder ever created. Advanced microcomputer technology is used to simplify its 
operation, not complicate it, so you can quickly learn the basics of operating your unit. 
After a couple of trips on the water, you will be operating your unit like an expert.  
 
Your Humminbird LCR has a number of outstanding features including a unique 
automatic feature. This computer controlled feature makes using your LCR as easy as 
pushing the “On” button. The computer will automatically adjust the sensitivity, change 
the depth scale even if the bottom goes off the screen and black out everything beneath 
the bottom to make the display easy to read. 
 
Other features include High Visibility LCD readout, night light, low profile swivel mount, 
waterproof enclosure, four depth ranges beginning with a super-shallow 15 foot depth 
range, digital bottom reading, and more. 
 
Read this operations manual thoroughly for all the outstanding features of your LCR. 
You will be amazed at its capabilities. 
 
Since there are virtually no moving parts, your LCR will function more trouble free than 
any sonar unit you have ever owned.  
 
This unit has been engineered, tested, manufactured, and is guaranteed by the 
employee/owners of Techsonic Industries, located on the shores of Lake Eufaula, 
Alabama. 
 
Fishing, boating, and depth sounders are our business, and at Humminbird we stand 
behind our product 100%.