Humminbird LCR 2000 User manual

Before attempting to install or operate your Humminbird LCR, it is recommended that you read the
operations manual thoroughly. The LCR is 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 the LCR, 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.
IMPORTANT:
Complete your warranty card and return it to us immediately.
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 simple 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 below the bottom to make the display easy to read.
Other features include a High Visibility LCD readout, night light, low profile swivel movement,
waterproof enclosure, four depth ranges beginning with a super-shallow 15 foot depth range, 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
Humminbird, a division 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
products 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 principal of sonar.
An electric signal is generated within the control head of the unit. When coupled to the to, this signal is
converted to an ultrasonic signal and is transmitted toward the bottom. The speed of the ultrasonic
signal traveling through the water 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.
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. However, unlike a
flasher, this information is not lost but 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 black 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 to use. 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 LCD 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 tilt.
The high visibility readout of the LCR allows you to see fish, bottom contour and underwater structure.
The LCR is designed to operate with a standard 16-degree transducer included with the unit. Other
transducers, such as 32 degrees, cannot be used. In order for your LCR to operate well at high speeds,
you must have a properly mounted transducer. Please read the transducer mounting procedure
carefully.
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 trolling motor. 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 PROCEEDURE
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 may be 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 can not 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 side of 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 of water 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.
4. TROLLING MOTOR MOUNTING PROCEDURE
A “Trolling Motor Transducer” is designed to be mounted on the foot of the trolling motor with the aid
of an adjustable clamp, included standard. Your trolling motor transducer will give excellent reading
with no interference from the electric motor. Some boat manufacturers are now glassing in a second
transducer beneath the front deck for thru the hull reading of the forward mounted depth sounder. This
installation also serves a dual purpose in that a fisherman can run his big motor at idle speed and use
his front depth sounder to scan for submerged stumps or obstacles. Such a practice can often prevent
damage to props and lower units of the big outboard.
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 si
nce 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.
OPERATIONAL INSTRUCTIONS FOR LCR 1000 AUTOMATIC MICROPROCESSOR CONTROL
Thanks to the use of microcomputers, your LCR 1000 is fully automatic It is the simplest depth sounder
ever created, making it easy to learn and interpret readings.
When activated the LCR 1000 will find the bottom, adjust for the proper amount of sensitivity and
advance to the proper depth range automatically to display bottom, fish and structure.
It is suggested that you familiarize yourself with the four control buttons before attempting to operate
your LCR 1000. All controls are activated through the front mounted switch panel.
Power: The Power “On” switch activates the unit. Since the operation is automatic, 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 blackened out to make the display easier automatically eliminated by the

Sensitivity Time Control (STC). Electrical interference is screened out to an automatic digital noise
reject feature.
The uppermost readout of the display is the sensitivity bar. (See Figure 11) You will notice this bar
increasing or decreasing based upon the amount of sensitivity being used. It is possible to use this
feature to interpret bottom texture. A harder bottom will require less sensitivity thus a narrower series of
sensitivity bars displayed. A softer bottom displays an increased number of bars due to the increased
sensitivity needed to give an adequate return.
To turn the unit off, simply depress the Power “Off” button.
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.
Depth: Since the LCR 1000 is fully automatic, 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 screen, the next deeper depth range
will automatically be activated. In order to return to a shallower depth range, you must manually
depress the depth “set” button. Each time this button is depressed, the range is decreased by one
setting. Thus, this control will work in the opposite direction from the automatic depth advance.
Note: Should you attempt to change to a depth scale which is less than the actual bottom depth, the
computer will automatically change the depth scale back to the proper position. For example, if you are
in 40 feet of water and you change the depth scale to 30 feet, the computer will automatically change
back to the 60 foot scale.
The depth range is always displayed at the bottom of the LCR display. The LCR 1000 has four depth
ranges, 0-15 feet, 0-30 feet, 0-60 feet, and 0-120 feet. The graduated depth scales down the left and
right side of the display will identify the proper depth based upon the range you are on at the time. On
the 0-15 foot scale, each line represents a one foot increment. On the 0-30 foot range a two foot

increment, on the 0-60 foot scale, a five foot increment and on the 0-120 foot scale, a ten foot
increment.
Some additional things you should know about the LCR 1000.
•Some polarized glasses might effect your view of the LCR display. It could result in a prism or scale
in rainbow effect. This condition can possibly be improved by a slight adjustment in tilt.
•In water about three feet or less, it will be difficult for the LCR 1000 to “lock” onto the bottom. In this
case, the unit might go to the 120 foot scale in attempting to find the bottom.
•In order for your LCR to operate well at high speeds, you must have a properly mounted
transducer. Please read the transducer mounting procedure carefully.
•The transducer for the LCR 1000 is a 16degree, just like most standard Humminbird flasher units.
Other transducers, such as a 32 degree cannot be used.
•Low profile swivel mount is standard on all LCR models or the LCR can be used with Humminbird
SM-4 for quick removal.
OPERATIONAL INSTRUCTIONS FOR LCR 2000
The Humminbird LCR 2000 will operate fully automatic or manual at the discretion of the operator. At
the heart of the LCR 2000 is a microcomputer which is making thousands of decisions every second.
With the LCR 2000’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 2000 like an expert. It is
suggested that you familiarize yourself with each of the features and controls prior to operating your
LCR 2000.
1. Power: To activate the unit, depress the Power “On” switch. The LCR 2000 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
blackened 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 depth range will
automatically be activated. In order to return to a shallower depth range, you must manually
depress the depth “set” button. Each time this button is depressed, the range is decreased by one
setting. Thus, this control will work in the opposite direction from the automatic depth advance.
Note: Should you attempt to change to a depth scale which is less than the actual bottom depth, the
computer will automatically change the depth scale back to the proper position. For example, if you are
in 40 feet of water and you change the depth scale to 30 feet, the computer will automatically change
back to the 60 foot scale. In the Manual Mode the automatic range change is not active. This means
that you must manually set the depth scale. For, example, if you are on the 0-30 foot scale and the
bottom goes from 25 feet to 35 feet, you would press the depth set button three times to go from 0-30 to
0-15 to 0-120 foot scale. The bottom would then be displayed at 35 feet. The depth range is always
displayed at the bottom of the LCR display. The LCR 2000 has four depth ranges, 0-15 feet, 0-30 feet,
0-60 feet, and 0-120 feet. The graduated depth scales down the left and right side of the display will
identify the proper depth based upon the range you are on at the time. On the 0-15 foot scale, each line
represents a one foot increment. On the 0-30 foot scale a two foot increment, on the 0-60 foot scale, a
five foot increment and on the 0-120 foot scale, a ten foot increment.
3. Light: Depress the light “On/Off” switch to activate the display light for night or low light conditions.
The light is turned off again by depressing the “ON/Off” switch.

3. Sensitivity: Automatic Mode-Each time the unit is turned on, the automatic feature is on. In the
automatic mode the sensitivity is adjusted to give a good return and the correct depth range is
selected. The word Auto will appear in the upper right hand corner of the display any time the unit is
in the automatic mode. The sensitivity bar at the top in the of the screen will increaseor decrease
automatically indicating the amount of sensitivity being used. In deeper water or soft bottom
conditions this bar will increase indicating more sensitivity. In shallow water or when a hard bottom
is being read, 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 are two ways of putting the LCR 2000 in the manual mode: (1) depress the Auto
“On/Off” button or (2) depress either the manual decrease (-) or increase (+) button. You will notice that
the word “Auto” in the upper right hand 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 at the top of the screen 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.
In the Manual mode everything below the bottom is no longer blackened out, therefore a second return
or double echo can be displayed if desired. Also, the hardness of the bottom can be determined by the
thickness of the bottom return. For example, a hard or rock bottom will give a wider bottom return as
compared to a soft or muddy bottom.

Note: You will find the manual sensitivity control most useful when looking for smaller targets such as
smaller fish. In the automatic mode the computer might not be using enough sensitivity to show smaller
targets. At higher sensitivity settings more targets will be seen. Therefore, you might want to use the
automatic mode while running and then use the manual mode for charting and finding fish.

You should also note that it is possible to have the sensitivity set too high such that reflection off of
suspended matter or air bubbles will begin to black out the display.
In the manual mode the depth scale does not change automatically. To once again activate the
automatic mode, depress the Sensitivity Auto “On/Off” switch.
5. Alarm: The LCR 2000 is equipped with an audible alarm which, when activated, will advise the
operator of the presence of fish, structure or shallow water. The alarm controls are distinguished from
the other controls by their yellow color. The alarm is activated by pushing the Alarm “On/Off” button.
When first activated, the alarm is set at five feet. The desired alarm depth can then be adjusted up or
down by pressing the increase range or decrease range. When the increase or decrease button is
pressed once, the alarm setting will change one division. If the button is held down the setting will move
as long as the button is held down. The alarm setting is indicated down the right hand side of the
display. It is possible to set the alarm anywhere between the 4 foot to the 120 foot range. When the
bottom enters the alarm range it will trigger a continuous audible signal. Fish which enter the alarm
range will trigger a short alarm. Therefore, if you want to use the alarm feature to locate fish simply set
the alarm close to the bottom and listen for the short alarm indication.
The alarm depth will adjust itself when the depth range changes from one scale to another. Thus a
depth alarm set ten feet deep while on the 15 foot depth scale will remain at ten feet deep should the
unit advance to the 30 foot scale. Note: To set the alarm with the most accuracy, set it using the lowest
scale. For example, for a ten foot alarm setting, use the 0-15 foot scale to set in ten feet exactly. Turn
off the alarm by again pushing the Alarm “On/Off” button. The alarm setting will then go to zero. If the
alarm is turned on again before the unit is turned off, it will still be set at the previous setting.
6.Display: Stop/Resume: Anytime during the operation of the LCR, the operator may “freeze” the
display by simply pushing the display “Stop/Resume” button. This feature will aid in the learning and

interpretation of the signal on your LCR display by giving you time to study the display. The
“Stop/Resume” will not change any original settings when once again activated. Note: No settings on
the LCR 2000 may be changed while the display is stopped. When the “Stop/Resume” button is
pressed again the unit will resume reading at the immediate point at which the boat is sitting in the
water.
7. Display speed: The LCR 2000 has a total of eight display speeds. When the unit is turned on the
display will be advancing at a medium speed. To increase the display speed, depress the “Fast”
button once or hold it down to change rapidly. An audible sound is heard each time the speed is
advanced. When the limit has been reached a chirping sound will be heard. At this point the speed
will be advancing at its maximum. To decrease the speed, simply depress the “Slow” button until
the desired advance is reached. It is suggested that you experiment with various display speeds
until you achieve the desired results. You should select the fastest display speed for high speed
operation, but use a slower display speed for idle or trolling speed.
Some additional things you should know about the LCR 2000
•Some polarized glasses might effect your view of the LCR display. It could result in a prism or
rainbow effect. This condition can possibly be improved by a slight adjustment in tilt.
•If you get confused while in the manual mode, for instance, if you don’t know where the bottom is,
then press the auto on/off button to turn on the automatic mode. The LCR 2000 will find the bottom
by selecting the proper sensitivity level and depth scale. You can then go back to the manual mode
if desired.
•In order for your LCR to operate well at high speeds, you must have a properly mounted
transducer. Please read the transducer mounting procedure carefully.
•The transducer for the LCR 2000 is a 16 degree, just like most standard Humminbird flasher units.
Other transducers, such as 32 degrees, cannot be used.
•Low profile swivel mount is standard on all LCR models, or the LCR can be used with Humminbird
SM-4 for quick removal.
CARING FOR YOUR LCR:
Since your Humminbird LCR is completely waterproof, it can be cleaned with soap and water or hosed
off after salt water is used with no fear of damage to the unit or its electronics. When cleaning the lens,
it is suggested you use a chamois cloth and a non-abrasive cleaner such as Windex. Do not wipe while
dirt or other gritty material is on the lens. Care should be exercised to avoid scratching the lens.
AS with any electrical instrument, do not leave your LCR on the dash board or rear window area of he
car. The sun can create extremely high temperatures which can damage the case and internal
components. During extended periods of non-use, such as winter, you should store the LCR and other
removable depth sounders in the house, or garage. This will help prolong the good appearance and
operation of these instruments.
LEARNING TO USE YOUR LCR:
Note: Steps 1, 2, 3, & 4 apply to both LCR and LCR 2000. After installing the unit, transducer, and
power cable as instructed, the LCR is ready for use. By following the steps below you will be able to
quickly learn how to use the LCR. Also, trouble shooting suggestions are listed in these steps. Note:
Perform steps 1, 2, & 3 at idle or slow speed. These steps will insure that your LCR is working properly.
Step 1
After making sure that you are in water deeper than three feet, turn your LCR on by pushing the “On”
button. The LCR’s computer will automatically adjust the sensitivity and depth scale so that in about
one second you will see images appear on the right side of the display and moving to the left. The

small gap in the zero line allows you to see movement on the display even when the button is not
changing.
TROUBLE SHOOTING:
If nothing happens when the “On” button is pushed, check your electrical connections and fuse. Also
check that the red wire on the power cable is connected to the positive battery terminal and that the
black wire is connected to the negative battery terminal. If these wires are reversed it will not damage
the LCR.
It is normal if when reversing the boat, the bottom return is lost, since air from the prop is being forced
under the transducer. Remember the transducer cannot transmit through air.
TROUBLE SHOOTING:
If the display comes on when the “On” button is pushed but no bottom information is seen, check that
the transducer connector is securely locked to the rear of the LCR. Also insure that the transducer is
completely submerged. A transducer cannot work properly in air or through air bubbles in the water.