Humminbird LCR4 ID User manual

TABLE OF CONTENTS
INSTALLATION PREPARATION………………………………………………………. 2
Parts Supplied……………………………………………………………………. 2
Accessories………………………………………………………………………. 2
Installation Overview……………………………………………………………. 2
Alternative Transducers and Mounting Methods…………………………….. 4
Transducer Exchange…………………………………………………………… 5
INSTALLATION………………………………………………………………………….. 6
Transom Installation…………………………………………………………….. 6
Inside the Hull Installation………………………………………………………. 10
Control Head Installation……………………………………………………….. 12
Test the Installation……………………………………………………………… 15
INTRODUCTION………….…...………………………………………………………... 16
USING THE LCR 4000………………………………………………………………….. 19
Total Screen Update………………………………………………………….. 19
Operational Instructions………………………………………………………… 20
Learning to Use Your LCR……..……………...………………………………. 30
Learning to Read the Display.…………………………………………………. 33
MAINTENANCE AND WARRANTY………………………………………………….. 35
Maintenance…………………………………………………………………….. 35
Troubleshooting…………………………………………………………………. 36
Warranty…………………………………………………………………………. 39
Service Policy…………………………………………………………………… 40
Customer Support………………………………………………………………. 41

TRANSDUCER MOUNTING PROCEDURE
Humminbird’s high-speed transducer is supplied with your LCR. This transducer has
been designed to give good high speed readings on most all boat designs, including
aluminum.
Please carefully consider the following before installing your transducer.
TRANSDUCER MOUNTING OPTIONS
A. Transom Mount-The Humminbird high speed transducer allows the transducer

element to be mounted below the bottom of the boat hull keeping the transducer out
of turbulent water and insuring good high speed operation. The transducer will
absorb the blow of any obstruction by rotating up out of the metal spring bracket
without harming the transducer, or your boat. The transducer can be re-engaged by
simply rotating the transducer down and snapping it back in place. (See Figure A)
B. Inside Hull Mount-The high speed transducer can be mounted inside the hull
(without pivot assembly) using the proper two-part epoxy, such as Humminbird’s
epoxy kit. Even though there is some loss of signal in shooting through the hull, your
LCR will perform well with this type of installation. You cannot shoot through the hull
of an aluminum boat.
C. Trolling motor Mount-This type of transducer is not supplied with your LCR. It is
designed to mount on the foot of a trollingmotor. You may exchange your un-used
high speed transducer for a trolling motor transducer. Call the Humminbird
Customer Service Department.
D. Bronz Thru-Hull Mount-This transducer is not supplied with your LCR but for an
additional cost you may exchange your un-used high speed transducer for a bronz
thru-hull. The bronz thru-hull transducer has a threaded stem which installs through
a hole drilled in the boat hull, leaving the housing exposed under the boat. This type
of installation must be used for many boats with in-board engines, because there is
no suitable location on the transom away from the noise and turbulence created by
the prop. A bronz thru-hull transducer should be installed by qualified personnel
only.
The LCR will operate well at high speeds with a properly mounted transducer.
Remember, a transducer will not work transmitting through air or through air
bubbles.
1. TRANSOM MOUNTING PROCEDURE
Step 1.
MOUNTING LOCATION-It is important that the transducer be mounted on the transom
where water flow is in constant contact with the transducer. You may wish to observe
the rear of the boat while it is moving through the water to determine the best mounting
location.

Step 2.
BRACKET INSTALLATION (Aluminum Boats)-To install the metal bracket on an
aluminum boat locate the template on the transom between rows of rivets, or ribs that
are on the bottom of the boat. Align the template so that the bottom corner of the
template nearest the center of the transom is on the bottom edge of the transom.
Once the location is determined mark and drill three 7/64” dia.. holes noted on the
template. Attach the metal bracket using three #10 self threading screws supplied. Be
sure to align holes in the center of the
Bracket slots. On some aluminum boats it maybe necessary to use a wood back-up
plate. It is important to use a silicone sealant between the screwhead and bracket in
order to prevent leaking. (See Figure C)
Step 2.
BRACKET INSTALLATION (Fiberglass Boats)-If your boat has a stepped transom
located below and under the main transom, the compact transducer design allows
mounting in this area. This mounting location is recommended for good reading at very
high speeds. (See Figure D)

To install the metal bracket on a fiberglass boat, locate the template on the transom in
the same manner as for an aluminum boat. (See Figure C)
NOTE: On boats with more than 15 degree deadrise angle it may be necessary to
mount the transducer slightly off parallel with the water level. (See Figure E)
Mark and drill the three 9/64” dia. holes as shown on the template. Attach the metal
bracket using the three #10 self threading screws supplied. Be sure to align the holes so
that they are centered vertically in the three slots found in the bracket. It is important to
use a silicone sealant between the screwhead and bracket in order to prevent leaking.
Step 3.
TRANSDUCER PIVOT ASSEMBLY-Assemble the pivot to the transducer main body
using the two ¼”x5/8” allen head screws, two 3/8” tooth washers and two, ¼” square
nuts. Make sure the tooth washers are sandwiched between the transducer main body
and the pivot. The square nuts are trapped inside the pivot and will not rotate as the
allen head screws are tightened. HOWEVER, DO NOT TIGHTEN AT THIS POINT.
(See Figure F)

Step 4
TRANSDUCER ASSEMBLY-Insert the transducer assembly into the metal bracket
from the bottom. Push up until the holes in the plastic pivot align with the uppermost
holes in the bracket. Slide the O-ring on to the headed pin and insert it through the two
parts. Assemble by screwing the ¼”x3/8” allen head screw into the end of the pin and
tighten. (See Figure G)
Step 5
ANGLE ALLIGHMENT-Set the transducer angle so that it is parallel with the bottom of
the boat hull. Once proper alignment is achieved, tighten the two allen head screws

using the 5/32” allen wrench provided. The screws are visible through the access holes
on each side of the metal bracket. Check to make sure the transducer main body is
rigidly fastened to the pivot. (See Figure H)
Step 6
CHECK POSITION OF TRANSDUCER-At this point, check to see that the bottom of
the transducer is a minimum of ¼” below the bottom of the transom. (However, as noted
in STEP 2, the top of the transducer cannot fall below the bottom of the transom). If it is
not, remove the transducer assembly from the metal bracket by removing the pin
installed during STEP 3. Loosen the metal bracket mounting screws, re-position the
bracket utilizing it’s slotted holes, tighten and re-assemble. It may be necessary to
replace the silicone sealant after this adjustment is made.
NOTE: It may be necessary to make several high speed runs to adjust transducer
either UP/DOWN or to re-adjust the angle to achieve optimum results.
Step 7
CABLE CLAMPS-Install cable clamps as necessary by drilling a 1/8” dia. hole for the #
8 screw supplied.
2. INSIDE HULL MOUNTING PROCEDURE
Warning: In order to achieve proper results with this type installation, it is important that
the transducer be mounted by someone familiar with the use of two part epoxy
adhesives. For this reason, Techsonic Industries, Inc. will not be responsible for any
damage due to the mounting of your transducer in this manner.
NOTE: An Epoxy Kit (Part N. EPK) is available from Humminbird. This Epoxy Kit has
been formulated for Inside Hull Transducer Installation.
1. Select as flat an area as possible near the aft end and center of boat where the hull
is thin and not double. If the bottom has a runner down the center of boat, select an
area to one sideof the runner, but as close to the runner as possible.
2. Clean the inside of the boat with lacquer thinner in the area transducer is to be
mounted. Outside of boat in this area should also be cleaned. (Not with lacquer
thinner).
3. Put approximately one inch ofwater in the bottom of the boat.

4. Put transducer in the water. The bottom of the transducer should be in a flat area
and should be in good contact with the bottom of the boat.
5. Operate the LCR with the boat operating at high speed. The transducer may have to
be moved in order to find an area where satisfactory operation is observed.
6. When an area is found that produces satisfactory operation, mark the location of the
transducer.
7. Remove the water and transducer and clean the marked area and the bottom of the
transducer thoroughly.
8. Using the Humminbird Epoxy Kit or equivalent, mix an ample amount of epoxy
without causing it to bubble and pour it in the area the transducer is to be mounted.
The puddle should be larger than the bottom of the transducer.
9. Coat the bottom of the transducer with epoxy, then put it in the center of the puddle
and push down on the transducer while moving it around in a circular motion. This
forces out any air bubbles that may be trapped between the bottom of the transducer
and the hull of the boat.
10.Let epoxy cure then the transducer is ready to operate. No water is now required in
the bottom of the boat and gas and oil that is spilled inside of the boat will not
degrade performance as it will if the transducer is placed only in water.
CAUTION: Do not use the silicone seal or any soft adhesive to bond the transducer
to the hull. This will reduce the sensitivity of the unit.
CAUTIONS
1. Occasionally the “eye“ of your transducer may become dirty from storage or from
contact with oils present in boats or marina environments. (Oil will cause the “eye” to
lose the intimate contact with the water which is necessary for efficient operation.)
The “eye” may be cleaned with liquid detergent.
2. Improper installation of the transducer can alter the efficiency and accuracy of the
entire system.
3. If your boat of transducer is out of the water for a period of time, it may take a short
period of time for the transducer to become thoroughly “wetted” when returned to the
water. Also, re-entry may cause turbulence, which will create air bubbles in the “eye”
of the transducer. The bubbles will disappear in a short time or can be removed by
rubbing the transducer “eye” with your fingers while the transducer is in the water.
4. If your instrument should fail to function, be sure to check all the electrical
connections before removing the transducer or calling a serviceman.
5. Inspect your transducer cable and make sure that it has not been cut or damaged to
the point where it will affect the performance of the transducer. A slight nick or cut,
exposing the outer cable, can be repaired by wrapping with electrical tape. A
transducer can be damaged if the inner cable and outer cable are allowed to make
contact. Such a problem can sometimes be corrected by properly splicing the
coaxial cable. This should only be attempted by a qualified service technician.
6. If your LCR is not working properly and you suspect the problem might be in your
transducer, we would recommend you borrow a unit from a friend and try it on your
boat. If the symptoms are the same, you can almost be certain that the problem is in
the transducer.

INSTALLING THE LCR
The LCR should be mounted on a flat, solid surface for maximum stability. The low
profile swivel mount has four holes drilled in the base.It is recommended that all four
holes be used.
Position the swivel base and drill four ¼” diameter holes. Note: The LCR hole pattern Is
the same as for all Humminbird flasher units. Use hardware provided to mount this base
to the boat.
Next place the gimbal bracket on the swivel base and attach with four small machine
screws, provided.
Place the LCR in the gimbal mount and make certain the rubber washers provided are
placed between the unit and the gimbal bracket Important: Note which side of the
gimbal faces forward. (Slots on gimbal bracket go towards rear). Also, rubber washer
must be located between the unit and the gimbal bracket.
Install the mounting knobs and tighten snugly. The unit can now be swiveled and tilted
to any desired position.

OTHER MOUNTING OPTIONS
1. The LCR gimbal bracket can also be mounted on the SM-4, quick disconnect swivel
mount.
2. The LCR gimbal bracket can also be mounted directly to the dash without the swivel
mount, however, this method is not recommended since the unit
cannot be rotated.
INSTALLING THE CABLES
Your LCR comes equipped with Humminbird’s new Angle-Lock power and transducer
connectors. The power connector is identified with the letter P on the back of the plug.
It plugs into the outlet on the back of the unit marked “Power”. The transducer connector
is identified with the letter T and plugs into the outlet on the back of the unit marked

“Transducer”. Note: An adapter (AD-4) is available to allow use of an old waterproof
(BNC) transducer with the LCR, but be sure that the transducer is a 16degree. A 32-
degree transducer cannot be used.
A 11/8” hole must be drilled to pull through the transducer connector. After drilling the
hole, pull the transducer connector up through the hole. If you are installing two units,
both transducer connectors can be pulled through this 1 1/8” inch hole. Next, push the
power cable wires down through the hole. A hole cover has been provided which will
dress and hold the wires. Install the hole cover after determining the necessary wire
length from the hole.
The power cable has a red lead to the positive (+) post and the black lead to the
negative (-) post. Install a 1 amp fuse between the red cable and positive post of your
12-volt battery.
If a fuse panel is available, we recommend wiring the power cable into the fuse panel.
Note: The LCR must be fused separately from any other accessory.
Your Angle-Lock connectors can only be plugged in one way. Position the connector so
the letter P or T can be read and the 90 degree bend is pointed downward. Push the
connector in as far as it will go. Turn the positive locking ring as far as it will go
clockwise until you feel it lock. Locking ring as far as it will go clockwise until you feel it
lock. Your connector is now locked into place.
Note: For easy access to the connectors, simply loosen the mounting knobs and tilt your
LCR forward. The connectors are now in full view and easy to plug or unplug.

INSTALLATION
TEST THE INSTALLATION
TEST THE INSTALLATION
Testing should be performed with the boat in the water, however you can initially
confirm basic operation with the boat trailered.
Press POWER once to turn the unit on. There will be an audible chirp when any button
is pressed to confirm the button press. If the unit does not power-up, ensure the unit is
fully seated on the mount and that power is available.
The first screen provides four options: Start-up, Options, Simulator, and Diagnostic. A
message at the bottom of the screen indicates the transducer connection. If no
transducer is detected (or one is not connected), the message will indicate this and the
unit will go into simulator after the initial screen times out.
Note: the transducer must be submerged inwater for reliable transducer
detection.
If a transducer is detected, the unit will enter “Start Up” or normal operation unless you
choose another option. If you do not press any button before the timer reaches “0”, the
normal operation screen is displayed. If the boat is in water, sonar data appears.
If the bottom is visible on screen with a digital depth readout, the unit is working
properly. Ensure the boat is in water greater than 2’ but less than the depth
capability of the unit and the transducer is fully submerged. Remember the sonar signal
cannot pass through air.
If the unit is working properly gradually increase the boat speed to test high-speed
performance. If the unit-functions well at low speeds but begins to skip or miss the
bottom at higher speeds, the transducer requires adjustment. Refer to the appropriate
transducer installation section for more detail.
Note: it is often necessary to make several incremental transducer adjustments
before optimum high-speed performance is achieved.
Important: For Transom Mount transducer installations, install the third mounting screw
after the final transducer adjustments.
Humminbird •3 Humminbird Lane•Eufaula, Alabama 36027

USING THE LCR
INTRODUCTION
Before attempting to install or operate your Humminbird LCR, it is recommended that
you read the operations manual thoroughly. The LCR4-ID and LCR40-ID have a
number of special features not found on other depth sounders. To completely
understand all the features of your unit, we suggest you follow the instructions 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 [phone].
INTRODUCTION
Congratulations on selecting the LCR4-ID or LCR40-ID.Your unit uses advanced LCR
technology to make it easy to use and easy to understand so that you will quickly learn
the basics of operating your unit. It also incorporates the most innovative concepts
available for finding fish, making it the first true fish finder ever made. 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%.
Your new LCR is covered by our Lifetime Guaranteed Service policy. We wish you good
luck, good fishing, and many hours of pleasure with your new Humminbird LCR.
THEORY OF OPERATION
Your Humminbird LCR works on the basic principals of sonar. An electronic signal is
generated within the control head of the unit. When coupled to the transducer, this
signal is converted to an ultrasonic signal and is transmitted toward the bottom. The
speed of the ultrasonic signal traveling through the waters is approximately 4800 feet
per second.
The signal travels through the water until it strikes an object or the bottom. At this
instant it is reflected back, picked up by the transducer, reconverted to an electronic
signal and is recorded on the display of the LCR.

USING THE LCR
INTRODUCTION
The reading at the far right hand position of the display illustrates that which is being
passed over at that time. If you are familiar with a flasher unit, you might think of the
information coming on the right side of the screen as the information that would be seen
at one instant on a flasher (see Figure 1). However, unlike a flasher, this information is
not lost but it is shifted or moved to the left as new information comes on. Therefore, the
information is retained until it disappears from the left hand position of the display.
The display used on the LCR is a Liquid Crystal Display. The material in the display is a
liquid that can be aligned such that it either "blocks" light or it lets light pass through.
This “blocking” of light is what makes the dots on the screen.
Since the LCR’s display depends on light passing through it to make the images,
increasing the light source will make it easier tosee. This is why your LCR can be seen
so well in direct sunlight. You will also notice that the display can be seen better at
certain angles. The LCR mounting has been designed for tilting and pivoting so that you
can easily maintain a good angle for viewing. Another characteristic of an LCR display
is that you may find that some polarized glasses might affect the view by causing a
rainbow prism to appear. This condition can possibly be improved by a slight adjustment
in tint.

USING THE LCR
INTRODUCTION
TheLCR4-ID and LCR40-ID use a special and very unique liquid crystal display.
Ordinary LCD's have two colors-black and white. The black color, as was explained
earlier, is made by blocking the light that comes into the display.
The LCR4-ID and LCR40ID add a third color, red, by using a second layer on the
display. If you look closely you will see that the red image is slightly above the black
image. You will also notice that the red image is transparent, that is, you can see
through it to the black and white image. This new display gives your unit the ability to
display more information than ordinary two-color units:
1. Objects at least three inches off the bottom are displayed in red.The bottom
and structure attached to the bottom are displayed in black. The electronics in the
LCR4-lDand LCR40-ID can separate the bottom from objects at least three inches off
the bottom no matter what depth range you are viewing. This means that fish close to
the bottom will be easily seen on the LCR (see Figure 2). These same fish would be
missed on an ordinary display because they would just look like part of the bottom.
2. Strong signals are displayed with a red dot over a black dot. The electronics
can separate the strong fish echoes from the weaker fish echoes. This means that you
will be able to find the bigger fish because they will be displayed with a red and black
dot, making it easy to separate them from the weaker returns displayed in red only. You
will notice a slight pink tint on the display. This is due to the additional layer on the LCD.

USING THE LCR
TOTAL SCREEN UPDATE
TOTAL SCREEN UPDATE®
What is Total Screen Update?
Total screen update is a unique feature of Humminbird LCRs. It will allow you, when
changing depth scales, to totally change or update the screen to the new depth scale. It
will allow you to zoom in and look at information in much finer detail even after you’ve
already gone over the area.
How Does Total Screen Update Work?
Inside the LCR are memory devices which can store information. Automatically, while
you're operating the LCR, the computer is putting information into the LCR'S memory.
All this information is being put into memory in much smaller increments (pieces) than is
being displayed on the normal full depth scales. For example, on the 0to 60 foot scale
each dot is equal to one foot of depth, but the computer is putting information into
memory such that each dot equals 2½ inches.
If after reading this, you don't understand how Total Screen Update works, don’t worry.
The important thing is that you understand how to use Total Screen Update. Read on…
How To Use Total Screen Update
This is the easiest part. Since the LCR’s computer is doing all the work, you will find the
LCR Total Screen Update very easy to use.
There are two ways that you will use Total Screen Update:
1. When changing a depth scale the LCR’s computer will automatically change or
update the entire screen to the new depth scale. This Total Screen Update feature
works when changing to deeper or shallower scales. For example, suppose you are in
the 0 to 120 foot scale but the bottom depth changes quickly to 20 feet. When the depth
range is changed to the 0 to 30 toot scale, the entire screen will look just as if you had
gone over the area on the 0 to 30 foot scale.
2. The second way that you will use Total Screen Update is in operating the LCR's
Zoom or Bottom Lock. Since the computer has stored in memory information in very
small increments, you will be able to recall this information from memory to get an
expanded view of areas which you have already passed over.

USING THE LCR
OPERATIONAL INSTRUCTIONS
For example, if you go over some interesting structure or fish, you will be able to zoom
in for a better look without going back over the area. Simply activate the zoom and the
information that is stored in memory will be recalled and the total screen will be updated
(changed) to show the zoom information. Also, when you go back to the full depth
range, the entire screen will be changed to look just as if you had been on that depth
range all along.
The operation of the zoom function is explained in a later section.
OPERATIONAL INSTRUCTIONS
The Humminbird LCR will operate fully automatic or manual at the discretion of the
operator. At the heart of the LCR are 2 microcomputers which make thousands of
decisions every second. With the LCR'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 LCR like an expert. It is suggested that you familiarize yourself with each
of the features and controls prior to operating your
LCR.
1. Power: To activate the unit, depress the power “On/Off'' switch. The LCR 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 bottom is blacked out to make the display easier to read.
To turn the unit off, depress the power “On/Off'' switch again.
2. Light: Depress the light "On/Off" switch to activate the display light for night or low
light conditions. The light is turned off by again depressing the ''On/Off'' switch. When
using the night light you will notice that the viewing angle, or best viewing position is
different than during daylight operation. Tilt the unit back until you find the best angle for
night viewing.
3. Identification Features: When the LCR is turned on, the ID (identification-red
display) is automatically on. To turn the ID feature off, simply depress the ID on/off
button. With the ID feature off, all dots will be black. To turn the ID feature on again,
press the ID on/off button.
Notice that the total screen update feature allows you to change the total screen each
time you turn the ID feature off or on.

USING THE LCR
OPERATIONAL INSTRUCTIONS
Please read the Theory of Operation in the front of the manual for a detailed explanation
of the ID feature. Below are some tips to help you use this advanced ID feature:
A. The bottom and anything attached to the bottom are displayed in black.
B. Objects at least three inches off the bottom are displayed in red. This makes it very
easy to find fish, particularly those close to the bottom.
C. In some instances it will be possible to detect inanimate objects not attached to the
bottom, such as a floating log or tip of a branch. In this case the return will be displayed
in red, because it is not possible to distinguish between animate and inanimate returns.
D. Strong signals are displayed with a red over a black dot. This makes it easy to find
bigger fish because they are easily separated from the weaker returns that are
displayed in red only.
E. A large fish that is directly under the transducer will reflect a stronger signal than the
same size fish at the edge of the transmitted signal, as shown in the drawing.
F. With the LCR's signal strength indicator you can also tell more about schooling fish.
A school of fish displayed as a group of red dots with a black core would indicate a very
dense school or one that has some large fish. Smaller schooling fish would be displayed
in red only.
G. The LCR4-ID and LCR40-ID identification feature has been designed to be easy-to-
use and easy-to-understand. It will add fun to your fishing and give you more fish-finding
information.

USING THE LCR
OPERATIONAL INSTRUCTIONS
4. Automatic or Manual Mode
Automatic Mode-Each time the unit is turned on, the automatic feature is on. In the
automatic mode the sensitivity is adjusted automatically to give a good return and the
correct depth range is selected. The word Auto will appear in the lower left corner of the
display any time the unit is in the automatic mode. The sensitivity bar at the bottom of
the screen will increase or decrease automatically in deciding the amount of sensitivity
being used. In deeper water this bar will increase indicating more sensitivity. In shallow
water the sensitivity needed to achieve a good return will be less. Also, in the automatic
mode, the unit will black out the display beneath the bottom line.
Manual Mode-There aretwo
ways of putting the LCR in the
manual mode: (1) depress the
Auto "On/Off" button or (2)
depress either sensitivity
decrease (-) or increase (+)
button You will notice that the
word Auto in the lower left corner
of the display has gone off. The
operator can control the amount
of sensitivity by depressing the
(+) or (-) button. There are 15
sensitivity settings. When the (+)
or (-) button is pressed once the
sensitivity setting will change by
one division. If the (+) or (-)
button is held down the setting
will move up or down as long as
the button is held down. When
the maximum or minimum setting
is achieved, the unit will make a
“Chirping" sound indicating a
limit has been reached.
To once again activate the
automatic mode, depress the
auto on/off switch.
In the manual mode the depth range does not change automatically. The digital
bottom depth is not displayed. The ID feature is on.