INSTALLATION PREPARATION

PARTS SUPPLIED PARTS SUPPLIED Before installing your new Humminbird fishsinder, please ensure the following parts are included in the box: Fishfinder Transducer with 20 (6m) of cable and mounting hardware kit Mounting system and mounting hardware kit 6 (2m) power cable Publications kit
It any of these items is missing, call our Customer Support Hotline. ACCESSORIES Humminbird offers a wide assortment of accessories that complement and expand the capability of your new fishfinder. These accessories are designed with the same high standards and are backed by the same one-year warranty. The Humminbird Accessory catalog included with your unit contains descriptions of the many accessories available and ordering information. All Humminbird accessories are available through your full-service Humminbird dealer or factory direct through our number listed in the Customer Support section. INSTALLATION OVERVIEW Your Humminbird fishfinder consists of two primary components to install: the control head and the transducer. The control head contains the sonar transmit and receive circuitry, as well as the user controls and display. It should be installed in a location that provides access to the controls and visibility while in use. The control head mounts on a quick disconnect mounting system that swivels and tilts providing flexibility for viewing from almost anywhere on the boat. The transducer converts electrical energy from the transmitter into mechanical pulses or sound waves. The transducer also receives the reflected sound waves and converts them back into electrical signals for display on the control head. It should be installed in contact with the surface of the water in an area that has smooth waterflow- usually on the transom of the boat. There are several mounting options for the transducer. Review the following section to determine the method that works for you and your boat.
INSTALLATION PREPARATION INSTALLATION OVERVIEW Determining How to Mount the Transducer Your Humminbird fishfinder includes a standard transducer. This transducer can be mounted on the transom of the boat or bonded to the inside of a fiberglass hull boat. The transom installation, which is the most widely used, places the transducer on the outside of the boat hull. This technique produces the least signal loss, and provides a way to adjust the transducer after installation. The mounting hardware included is designed to protect both the boat and the transducer should the boat strike debris in the water or when trailering. As an alternative to transom mounting, it is possible on many fiberglass-hulled boats to glue the transducer on the inside of the boat hull. Since fiberglass has similar sonar characteristics as water, the sonar signal can pass through the boat hull with minimal loss. The hull of the boat must be single layer construction (not double-hulled) Also, any air trapped in the lamination of the fiberglass would prevent the sonar signal from passing through. Inside the hull installations require no holes be drilled into the boat and through experimentation, high-speed operation comparable to transom mounting can be achieved. Two-part slow cure epoxy (not included) is required to glue the transducer in place.

ALTERNATE MOUNTING METHODS ALTERNATE TRANSDUCERS AND MOUNTING METHODS Your Humminbird fishfinder comes with everything necessary for installation and operation on most boats. However, there are several situations which may require a different type of transducer. Inboard boats, wood or metal hulls, and sail boats create unique transducer mounting needs Alternate transducers and mounting methods are detailed below. Portable Mounting The standard transducer can be adapted for portable installations with a portable mounting kit available from Humminbird. This accessory adapts your transducer to a suction cup mount for temporary installation on the boat hull or other surface. Trolling Motor Mounting The standard transducer can also be adapted to mount on most trolling motors using a different accessory kit. This accessory includes a bracket and hose clamp that allows mounting the transducer to the body of most trolling motors. Thru-Hull Mounting Thru-hull transducers install through a hole drilled in the hull of the boat. Larger boats or boats with inboard motors create turbulence that make transom mounting ineffective. Also, hulls that are very thick or are double layered, or made from materials such as wood or metal, (which do not conduct sonar signals) make inside the hull mounting inadvisable. Thru-hull mounting may require the use of a fairing block to level the transducer with the waterline. Also, since special tools and knowledge may be required to perform this type of installation, it is best to refer to a qualified marine technician.
TRANSDUCER EXCHANGE TRANSDUCER EXCHANGE Other transducers are available as replacements for the standard transducer. You may exchange your new and unassembled transducer for another type by returning it to the address listed in Customer Support. Some transducers may have additional cost. Refer to the Accessory catalog or call Customer Support for information. BEGINNING INSTALLATION Now that you have determined the transducer mounting method you can begin installation of your new Humminbird fishfinder. The installation guide included on the next few pages provides detailed step by step instructions for installation of the control head and transducer. For transom mount transducer installations you will need the mounting template included with your manual. In addition to the parts included you need the following for installation and operation: A powered hand drill and various drill bits Philips and flat-head screwdrivers A ruler or measuring tape Pen or pencil 12 volt power source (your boats battery) A 1-amp fuse A fuse holder (if you are wiring directly to the boats battery) Silicone sealant (for sealing drilled holes) 2-part, slow-cure epoxy (for inside the hull transducer installations)

INSTALLATION

TRANSOM INSTALLATION Do not begin this transducer installation until you read the Installation Preparation in the Operation Guide. This chapter contains information critical to the correct installation of your transducer. Due to the wide variety of boat hulls, only general instructions are presented in the installation guide. Each boat hull represents a unique set of requirements that should be evaluated prior to installation. TRANSOM INSTALLATION Step One - Determine Where to Mount the Transducer Begin the transducer installation by determining where on the transom to install the transducer. Consider the following to find the best location: It is very important to locate the transducer in an area which is relatively free of turbulent water, As a boat moves through the water, turbulence is generated by the weight of the boat, and the thrust of the propeller(s). This turbulent water is normally confined to areas immediately aft of ribs, strakes or rows of rivets on the bottom of the boat, and in the immediate area of the propeller(s) (Figure 1). On outboard or inboard/outboard boats it is best to stay at least 15 (40cm) to the side of the propeller(s). If possible, viewing the transom of the boat while the boat is moving will provide the best means of locating turbulence free water. If maximum high-speed operation is a high priority, this is the recommended method. If this is not possible, select a location on the transom where the hull forward of this location is smooth, flat, and free of protrusions or ribs. The transducer when mounted should point straight down. The design of the transducer will accommodate a wide range of deadrises and remain ported straight down (Figure 2). On boats with stepped hulls, it may be possible to mount the transducer on the step. Never mount the transducer on the transom behind a step, as this area of the transom will not be in contact with the water at high speed (Figure 3).
TRANSOM INSTALLATION If the propeller(s) is (are) forward of the transom, it may be impossible to find an area clear from turbulence, and a different mounting technique or transducer type should be considered.
Step Two - Drill the Mounting Holes 1. Remove the mounting template from the front of the Operations Manual. 2. Hold the template on the transom of the boat in the location where the transducer will be installed (Figure 4). Align the template vertically, ensuring the lower edge of the transom meets with the bottom corner of the template. 3. Using a pencil or punch, mark the two mounting holes shown on the template onto the transom. Do not mark or drill any other holes at this time. 4. Using a 5/32 (4mm) bit drill the two holes to a depth of approximately 1" (3cm). On fiberglass hulls, it is best to start with a smaller bit and use progressively larger drill bits to reduce the chance of chipping or flaking the outer coating. Step Three - Assemble the Transducer 1. Attach the Pivot to the transducer body as shown in Figure 5, using the #8 3/8 (9mm) long allen headed pivot screw, the headed pin, the two flat washers, and the two toothed lock washers. Note: The toothed lock washers must be positioned between the transducer and the pivot ears. The flat washers must be positioned to the outside at the pivot ears. 2. Using the AIlen wrenches provided, loosely tighten the pivot screw (Figure 6). Do not completely tighten the assembly at this time, so the pivot angle can be adjusted later. 3. Insert the pivot/transducer assembly into the mounting bracket as shown in Figure 7. Do not snap the assembly closed.

TRANSOM INSTALLATION Step Four - Mount the Transducer to the Transom 1. Apply silicone sealant to the mounting holes drilled into the transom. 2. Align the transducer assembly with the drilled holes in the transom (Figure 8). 3. Use either a flat head screwdriver, a 5/16" (8mm) hex driver, or a 5/16" (8mm) socket to mount the assembly. Using the two #(25mm) long slotted hex head screws, mount the transducer assembly to the transom as shown. Do not fully tighten the mounting screws in order to vertically adjust the transducer. Snap the pivot down into place. Step Five - Adjust the Running Position of the Transducer The bracket allows height and tilt adjustment, the pivot screws allow angular adjustment. Initially, adjust the transducer as described in the following paragraphs. Further adjustment may be necessary to refine the instillation after high speed testing. 1. First adjust the pivot angle of the transducer body so its length is parallel with the length of hull of the boat. Then pivot the transducer down so the rear is about 1/4 inch (6mm) lower than the front (Figure 9). 2. Fully tighten the two pivot screws using the Allen wrenches. It may be necessary to retighten the pivot screws after the initial use as the plastics may still be seating to the lock washers. 3. Adjust the height of the assembly so the face of the transducer is 3/16" (4.5mm) beneath the lower edge of the transom (Figure 10). Mark the position of the mounting bracket on the transom with a pencil. 4. Force the pivot to the up position to gain access to the mounting screws. Assure the transducer location has not changed, then fully tighten the two mounting screws (Figure 11). Snap the pivot back down. Confirm the pivot angle has not changed. Note: A third screw location is provided for the
mounting bracket. Drill this hole and install the screw after final testing and adjustments have been completed.
TRANSOM INSTALLATION Step Six - Route the Cable There are several ways to route the transducer cable to the to the area where the control head will be installed. The most common procedure routes the cable through the transom into the boat. Inside the boat there is often a channel or conduit used for other wiring that the cable can be routed along. Do not cut or shorten the transducer cable and try not to damage the cable insulation. Route the cable as far as practical from the VHF radio antenna cables or tachometer cable to reduce the possibility of interference. If the cable is too short, extension cables are available to extend the transducer cable up to a total of 50' (15 m). Call Humminbird Customer Support for more information. Follow these steps to route the cable through the transom: 1. Drill a 5/8 (16mm) hole above the water line. Route the cable through the hole. 2. Fill the hole with silicone sealant. 3. Place the escutcheon plate over the hole and attach with the two #8 x 5/8 (16mm) screws. 4. Secure the cable by attaching the cable camp to the transom using a #8 x 5/8 (16mm) screw. Note: The transducer will pivot up to 90 degrees in the bracket. Allow enough slack in the cable for this movement. It is best to route the cable to the side of the transducer so the cable will not be damaged by the transducer during movement.

INSIDE THE HULL INSTALLATION INSIDE THE HULL INSTALLATION Inside the hull installation requires the mount system and control head be installed and operational. See Installing the Control Head for instruction on installing the unit. Inside the hull mounting generally produces good results in single thickness fiberglass-hulled boats. Humminbird cannot guarantee depth performance when transmitting and receiving through the hull of the boat since some signal loss occurs. The amount of loss depends on hull construction and thickness, and the installation. This installation requires slow-cure two-part epoxy. Do not use silicone or any other soft adhesive to install the transducer, as this material reduces the sensitivity of the unit. Five minute epoxy has a tendency to cure before all the air bubbles can be purged. Step One - Determine the Mounting Location Begin the transducer installation by determining where inside the hull to install the transducer. Consider the following to find the best location: Observe the outside of the boat hull to find the areas that are mostly free from turbulent water. Avoid ribs, strakes, and other protrusions as these create turbulence (Figure 14). As a general rule, the faster the boat can travel the further aft and closer to the centerline of the hull the transducer has to be located to remain in contact with the water at high speeds.
Step Two - Test the Mounting Location There is no opportunity for adjustment after the transducer glued in place. Therefore, it is best to perform a trial installation on inside the hull transducers first, and run the boat at high speeds to determine the best mounting area. 1. At the identified mounting location, lay the transducer body face down with the pointed end towards the bow. 2. Fill the hull with enough water to submerge the transducer body. Use a sand filled bag or other heavy object to hold the transducer in position.
The transducer cannot transmit through air. The water purges any air from between the transducer and the hull and fills any voids in the coarse fiberglass surface.
INSIDE THE HULL INSTALLATION 3. Power up the Control Head. 4. Run the boat at various speeds and water depths while observing the screen on the Control Head. If the unit functions well at low speeds but begins to skip or miss the bottom at higher speeds, the transducer needs to be moved. If depth performance is required, test the fishfinder in water at the desired depth. Test different locations in the hull until the optimum performance is achieved. Step Three - Permanently Mount the Transducer 1. Once the mounting location is determined, mark the position of the transducer. 2. Remove the water from inside the hull and thoroughly dry the mounting surface. If the surface is excessively rough, it may be necessary to sand the area to provide a smooth mounting surface. Ensure the mounting area is clear and dry. 3. Mix an ample quantity of two-part slow-cure epoxy slowly and thoroughly. Avoid trapping air bubbles. 4. Coat the face of the transducer and the inside of the hull (Figure 16). 5. Press the transducer into place with a slight twisting motion to purge any trapped air from underneath, keeping the pointed end of the transducer body pointed forward (Figure 17). Note: Proper operation requires the pointed end of the transducer body to face towards the bow. 6. Weight the transducer so it does not move while the epoxy is curing. When the epoxy cures, no water is necessary inside the hull. Neither water, spilled gasoline, or oil will affect the performance of the transducer.

CONTROL HEAD INSTALLATION CONTROL HEAD INSTALLATION Step One - Determine Where to Mount Begin the installation by determining where to mount the control head. Consider the following to determine best location: The cables for power, transducer and temp/speed accessories (if applicable) should be installed first and must reach the mounting location. Extension cables are available. There are two ways to route the cables to the unit: through a hole in the mounting surface underneath the mounting bracket or from a hole outside the mounting bracket. Routing the cables down under the mount provides maximum weather protection; however this is not always feasible if the area under the fishfinder is inaccessible. In this case, route the cables through a hole at another location and cover with the supplied hole cover. The mounting surface should be adequately supported to protect the fishfinder from excessive wave shock and vibration, and provide visibility while in operation. The mounting area should allow sufficient room for the unit to pivot and swivel freely, and for easy removal and installation (Figures 18-19).
Step Two - Connect the Power Cable to the Boat A 6 (2m) long power cable is included to supply power to the fishfinder. You may shorten or lengthen the cable using 18 gauge multi-stranded copper wire. CAUTION: Some boats have 24 or 36 volt electric systems. Be sure your unit is connected to a 12 VDC power supply. The Power can be connected to the boat's electrical system at two places: a fuse panel, usually located near the console, or directly to the battery. If a fuse terminal is available, use crimp-on type electrical connectors (not included) that match the terminal on the fuse panel. Attach the black wire to ground, and the red wire to 12 VDC power (Figure 20). Be sure to use a one amp
fuse in the connection. If you must wire the control head directly to a battery, be sure to install an inline fuse holder
CONTROL HEAD INSTALLATION and one amp fuse (not included) for the protection of the unit (Figure 21). Humminbird is not responsible for over voltage or over current failures. In order to minimize the potential for interference with other marine electronics a separate power source (such as a second battery) may be necessary. Step Three - Drill the Mounting Holes 1. Set the mounting bracket in place on the mounting surface. Mark the four mounting screw locations with a pencil or punch. 2. Set the mounting bracket aside, and drill the four mounting screw holes using a 9/64 (3.6mm) bit. Step Four - Run the Cables 1. If the cables must pass through a hole underneath the mounting surface, mark and drill a 1 (25mm) hole centered between the four mounting holes (Figure 22). Note: if the cables must pass through the mounting surface at a different location, drill the 1" (25mm) hole at that location and pass the cables through from underneath. Also, you must break out the tabs on the rear of the mounting base using needle nose pliers (Figures 24-25). 2. Insert all cables through the 1 (25mm) hole from beneath the mounting surface. 3. Pass the cables through the grommet (if the cable hole is underneath the mounting bracket) then press the grommet in place around the cables and into the 1 (25mm) hole. 4. Pass the cables through the mounting base, out the top of the mounting bracket. 5. Place the mounting bracket on the mounting surface aligned with the drilled holes. Insert the four flathead wood screws into the mounting holes and tighten fully (Figure 23).

Optional: If the cables pass outside the mounting bracket, install the hole cover over the hole and fasten in place using the two #8 x 7/8 (22mm) wood screws (Figure 24).
CONTROL HEAD INSTALLATION Step Five - Assembling the Connector Holder 1. Insert the cable connectors into the connector holder. The cable connectors are labeled, and there are corresponding labels on the connector holder (Figure 26). The slots for the connectors are keyed to prevent reverse installation, so do not force the connector into the holder. 2. Carefully pull the excess cable from beneath the mounting surface so the connector holder aligns with the mounting holes on the front of the mounting bracket (Figure 27). 3. Snap the support plate to the rear of the connector holder (Figure 28). 4. Insert the connector holder into place and use the two #6-32 x (9mm) screws to fasten it to the mounting bracket (Figure 28). 5. Install the control head by sliding it onto the mounting bracket until it is fully seated. To remove the unit simply depress the latch on the rear of the unit and lift (Figure 29). Your Humminbird is now ready for operation.
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 in water 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 highspeed 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

Mounting the LCR 120

Before mounting the LCR 120, gather the parts you need: LCR 120, mounting hardware j\kit power cable, and sensor cable. If the sensor cable is not long enough for your installation, see Accessories earlier in this manual for information on the EC-extension cable Next, consider where to mount the LCR 120. The gimbal mounting bracket offers mounting capabilities for the top of a shelf or the bulkhead (and lets you tilt the unit forward and backward for ease of viewing and operation.) To choose the best location, consider the following. The mounting surface should be adequately supported to protect the LCR 120 from excess wave shock and vibration. The mounting area should allow at least 2 clearance at the back, sides, and top of the unit for connection, air flow, and ease of removal. Any VHF radio you have may incur some degree of interference with the depth sounder. Hummingbird depth sounders are designed to minimize this interference, although it is best to route the sensor cable and antenna cable as far away from each other as possible- for example, on opposite sides of the boat. The sensor and any accessories such as speed and temp should be mounted first, and their cables routed from the transom forward to the area you have selected to mount the unit.
After you have determined the best location for your LCR 120, proceed with the instructions on the following page.
1. 2. 3. 4. 5. 6. 7. 8. Set the gimbal bracket in the mounting surface. Mark 1/8 holes for the mounting screws. At least 3 behind the bracket, drill a 5/8 hole to run the cables through. Set the bracket aside and drill the holes as marked. Pull the power and sensor cables through the 5/8 hole. Insert the cables into the corresponding numbered slot on the back of the LCR 120. Note that the slots are keyed so that the connectors can only plug-in one way. Install the hole cover to dress the cable through hole and provide strain relief. NOTE: Be sure to leave enough exposed cable to allow the LCR 120 unit to swivel. Mount the bracket to the boat using wood screws.
If your boat does not have a fuse panel, you can wire the power cable to the batter with an in-line 1-amp fuse and fuse holder (not included) in the positive wire, as shown on the preceding page. Do not connect directly to the batter without a fuse. Attach the black lead to the negative (-) terminal, and wire the red lead through the fuse to the positive (+) terminal. NOTE: Do not use any power cable other than the one provided with your LCR120.

Section 3: Testing the Installation
After installing your LCR 120, sensor, and cables, you should test the installation. Testing should be performed on the water since that is the only way to check your sensors performance. With your boat at idle, press the POWER button to turn the unit on. The LCR 120 performs a self-test on its electronics, then automatically selects the right depth range and
sensitivity level for conditions. Momentarily, youll see the reading start to March across the screen from right to left. Increase your boat speed to ensure that you get a continuous bottom reading as the boat moves. Your LCR 120 and its sensor are designed to operate at up to 75 mph, so feel free to test them at very high speeds. If the LCR 120 performs well at idle or slow speeds, but the display is not continuous at higher speeds, the sensor is not installed properly. Air bubbles or turbulence from the boat hull are passing across the sensor face, blocking the transmitting signal. By following the instructions in Mounting the Sensor, you can make simple adjustments that should fix the problem. NOTE: If other problems occur, see Troubleshooting later in this manual for tips from the Hummingbird engineers. If you dont find the solution there, call out Customer Service Hotline.
Section 4: Using the LCR 120
This section provides complete information on operating the LCR 120 through its front panel controls. You are encouraged to read this information completely as you first learn to use the LCR 120; doing so will insure you make the most if its many features and functions.
The fist part of this section explains the use of the built-in simulator, which you can use to practice selecting functions through the front panel. The remaining instructions, which can be followed while using the simulator or in actual operation, explain each function and are organized according to the front panel layout.
Using the Built-In Simulator
The LCR 120 includes a built-in simulator that helps you learn to use your new equipment. The simulator displays a typical underwater scene, and lets you practice with the controls.

The unit must be turned off before you start the simulator. To activate it, press down and hold the POWER button until a chirping sound begins. Release the button, and the built-in simulator begins displaying the typical LCR 120 a typical LCR 120 reading. You can use the simulator to learn the functions explained in the following pages, just as if you were getting actual on-the-water readings (but not that Sensitivity is disables). To turn off the simulator, turn off the unit by pressing the POWER button again. Of course, the best way to learn the LCR 120 is with actual use, especially in familiar waters. If you know whats below and see it on-screen, youll quickly become an LCR 120 expert. LCR 120 Functions The LCR 120 offers several functions that you can adjust with the front panel buttons. (Note that to select something with a button, you must press it fully so that you can hear a chirp sound.) You can get acquainted with these features by actual operation, or when using the simulator. POWER: Press the button once to turn the LCR 120 on, the press again to turn the unit off. When the unit is off, keeping POWER pressed for about 2 seconds starts the built-in simulator. STOP: Press this button to freeze the display so you can study it. Press is again to restart the display movement. SELECT: This button is used to access the following functions for further adjustment: ID Units Sensitivity Bottom Alarm Fish Alarm Zoom Range Bottom Lock Display Speed Depth Range Trip Log
To adjust any of these, press SELECT until the function you want appears. Each functions display tells you how to use the arrow buttons and ON-OFF for adjustment; when first learning, you should also refer to the following instructions. The three position hardness scale at the bottom of the screen helps differentiate between grass or muddy (soft) bottoms and structure or rock (hard) bottoms.

LCR 120 Functions

After you adjust any function, the display returns to its full-screen reading. IF the menu doesnt stay on the screen long enough, press the STOP button to hold the menu on the screen.
NOTE: The last function you select remains active- that is, you can adjust it without having to press SELECT again. For example, if the bottom alarm was the last function used, you can readjust the alarm by pressing one of the arrow buttons. Or, if you often use Zoom, you can select it once, then switch it on and off simply by pressing ON-OFF.

1. Selecting ID;

Factory Setting: Fish symbols
ID identifies targets not attached to the bottom and displays them with either a fish symbol or an arch. Three different size symbols are used to represent the returned signal strength, a good indicator of fish size. Use the up and down arrow keys to switch between fish or arches, or use the ON-OFF key to disable ID.

2. Selecting Units;

Factory Setting: MPH/SM
The LCR 120 has no provision for speed and water temperature accessories. Because of this, the UNITS menu has no effect on the operation of the unit. Sensitivity
3. Selecting Sensitivity;

Factory Setting: +0

The LCR 120 automatically adjusts to the proper amount of sensitivity for conditions (i.e. depth). You can bias the setting + or 5 levels to suit your personal taste. Increasing the sensitivity targets and the thermoclines, which might not be displayed at the +0 setting. If you want to manually adjust Sensitivity, select SENS and press the Up or Down arrow button to adjust the display.

Bottom Alarm

4. Enabling Bottom Alarm;

Factory Setting: Off

The Bottom Alarm lets you specify the minimum depth you want to maintain. To use it, select BOTTOM ALARM; then press the ON-OFF button to activate the alarm, and the Up or Down arrow button to adjust the depth at which the alarm depth when this function is on. When Bottom Alram is on, youll hear a continuous chirping sound when bottom is shallower than you defined. This is very handy for alerting you to shallow water or helping you maintain position over structure.

Fish Alarm

5. Enabling Fish Alarm;
The Fish Alarm alerts you with a chirping sound whenever the LCR 120 detects fish (or another object not attached to the bottom). To activate it, select FISH ALARM and press the ON-OFF button.
Initially, the fish alarm will sound when any target not attached to the bottom is detected. The word ALL is displayed on the menu and two fish are shown on the lower
part of the display. By pressing either arrow button, the word LARGE appears on the display and the alarm will only sound when a large target is detected. A single fish symbol is shown on the bottom of the display to represent that large fish only is selected. While there is some variation in sonar characteristics of different species, typically the strength of the return is relative to the size of the fish.

6. Using Zoom Range;

Zoom Range provides an up-close view. To activate it, select ZOOM RANGE and press ON-OFF. The Zoom view begins initially at the surface; press the Up or Down arrow to adjust Zoom Depth. The range of the display is shown when Zoom is on. The Zoom range depends on the current Depth Range: 7 in the 15 and 3- Depth Ranges; 15 feet in the 60 and 120 Depth Ranges You can adjust zoom depth before activating zoom, in which case the zoom range will be shown with horizontal dotted lines.

Bottom Lock 7. Using Bottom Lock Factory Setting: Off
Bottom-Lock provides an up-close view like Zoom Range, except that in this case the zoomed view automatically moves up or down to stay on the bottom. To use this feature, select BOTTOM LOCK and press ON-OFF. The range of the display is shown when Bottom-Lock is on. This is an ideal feature for finding structure or locating fish near the bottom. Remember: If Bottom-Lock is the last function you selected, you can use the ON-OFF button to switch Bottom-Lock on and off without having to press SELECT first.
Display Speed 8. Setting Display Speed; Factory Setting: One Level Below Maximum
The LCR 120 display is updated (advances across the screen) as you move through the water. The speed at which the display is updated depends on the Display Speed setting. To adjust it, select DISPLAY SPEED, and press the Up arrow button for a faster setting or the Down arrow for a slower setting. In general, higher Display Speed settings provide faster updates, while slower Display Speeds provide more detailed information. Depth Range 9. Setting Depth Range Factory Setting: ON (Automatic)
When you turn the LCR 120 on, it finds the bottom \, sets the ideal Depth Range, and automatically adjusts the Depth Range (to as much as 120)
as the depth changes. In this Auto Depth Range mode, the bottom is blacked-in for easy-to-understand readings. If you prefer, you can turn Auto Depth Range off. Select DEPTH RANGE, press ON-OFF, and adjust the Depth Range with the Up or Down arrow button. In this Manual Depth Range mode, the bottom is not blacked in. This lets you see a second return, which is preferred by some fisherman because the width of the second echo can indicate bottom hardness. Trip Log 10. Trip Log Factory Setting: Off
Although speed and temperature accessories are not available for the LCR 120, the Trip Log provides a useful timer. The timer begins when the unit is powered and can be reset and any time by pressing STOP. Pressing ON-OFF exits Trip Log and returns you to normal LCR 120 operations.

Step 3. TRANSDUCER PIVOT ASSEMBLY- Assemble the pivot to the transducer main body using the two x5/8 allen head screws, two 3/8 tooth washers and two, 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 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 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 its 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.

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 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 Humminbirds 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 32degree 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.

If after reading this, you don't understand all about how the LCR4000s Total Screen Update works, dont worry. The important thing is that you understand how to use Total Screen Update. Read on
TOTAL SCREEN UPDATE How To Use Total Screen Update This is the easiest part. Since the LCRs computer is doing all the work, you will find the LCR4000s Total Screen Update very easy to use. There are three ways that you will use Total Screen Update: 1. When changing a depth scale, the LCRs computer will automatically change or update the entire screen to the new depth scale. In Figure 12 the depth scale is being changed from the 0 to 30 foot scale to the 0 to 60 foot scale. Note that the display was changed to show the entire screen on the 0 to 60 foot scale. This Total Screen Update feature works when changing to shallower scales, too. For example, suppose you are in the 0 to 120 foot scale but the bottom depth is only 10 feet. When you change to the 0 to 15 foot scale, the entire screen will look just as if you had gone over the area on the 0 to 15 foot scale. 2. Total Screen Update allows you to reverse or bring back onto the display three full screens past information. This, in effect, multiplies by four the size of the LCR screen. Operation of the reverse function is explained in a later section. 3. The third way that you will use Total Screen Update is in operating the LCR4000's Zoom. Since the computer has stored in memory information from 0 to 120 feet 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. 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 displayed on the screen. The operation of the zoom function is explained in a later section.
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.

OPERATIONAL INSTRUCTIONS You may also manually change the depth scale by pressing the depth set button. Each time this button is depressed, the range is decreased by one setting. For example, if you are on the 0-30 ft scale, pressing the depth set button once will change the scale to 0-15 ft. Pressing it again will change the scale to 0-120 ft. Note: Should you attempt to change 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. Remember, in the manual mode (see paragraph 4 below) the automatic range changer is not active. The depth range is always displayed at the bottom of the LCR display. The LCR4000 has four depth ranges, 0-15, 0-30, 0-60, and 0-120. The graduated depth scales down the left and right of the display will identify the proper depth based upon the range you are on at the time. On the 0-15 scale, each line represents a one foot increment. On the 0-30 scale a two foot increment, on the 0-60 scale, a five foot increment, and on the 0-120 scale, a ten foot increment. Remember that because of the LCR4000s Total Screen Update feature, information is automatically being put into memory in smaller increments (pieces) than is being displayed on the normal depth scales (see explanation of Total Screen Update earlier in manual). This means, for example, that even though you are in the 0 to 120 ft scale, when you change to the 0 to 15 ft scale the information is displayed just as if you had been on the 0 to 15 ft scale all along. No information or resolution is lost. 3. 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. 4. Sensitivity 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 upper right hand corner of the display any time the unit is in the automatic mode. The sensitivity bar at the top of the screen will increase or decrease automatically indicating the amount of sensitivity being used. In deeper water or soft bottom conditions this bar will increase,

OPERATIONAL INSTRUCTIONS 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 LCR4000 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 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 blacked out, therefore a second return or double echo can be displayed if desired. (See Figure 14). 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. (See Figure 15).
OPERATIONAL INSTRUCTIONS Note: You will find the manual sensitivity control more 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 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's 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 and the digital bottom depth is not displayed. To once again activate the automatic mode, depress the Sensitivity Auto On/Off switch. 5. 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 function will not change any original settings when once again activated. The sensitivity and display speed cannot be changed while the display is stopped. If they are pressed, a chirping sound will indicate that these functions cannot be changed while the display is stopped. All other functions, such as Zoom, Depth Scales, Reverse and Forward, are active with the display stopped. When the Stop/Resume button is pressed again the unit will resume reading at the immediate point at which the boat is sitting on the water. 6. Display Reverse: Information that has gone off the display can be reversed back onto the screen by using the Display Reverses feature. By pressing the Reverse button information that had gone off the left side of the display can be seen again, that is, the display will begin to shift to the right. When the Reverse button is pressed once, the display will move one division to the right. If the button is held down the display will move to the right as long as the button is held down. Up to three full screens may be put back onto the display. Once three screens have been reversed, a chirping sound will indicate that the limit has been reached. 7. Display Forward: This button moves or shifts the display to the left. This means that the Forward button shifts the information in the opposite direction than does the Reverse button. Therefore, the Reverse button shifts the display to the right, and the Forward button shifts the display to the left.

OPERATIONAL INSTRUCTIONS To begin transmitting and receiving of new information after using Reverse or Forward, simply press the Stop/Resume button. The display will change back to the location seen before reversing and the unit will resume reading at the immediate point at which the boast is sitting in the water. 8. Zoom and Bottom Lock: You will find the Zoom feature of the LCR4000 to be a very valuable tool. The Zoom Range is controlled by the Range Up or Range Down buttons. Each time one of these buttons is depressed the zoom region will move one division. If the button is held down the region will continue to move as long as the button is held down. The Zoom Region is indicated by the group of bars at the extreme right of the display. This region is 7 feet on the 0 to 15 ft and 0 to 30 ft scales and is 15 ft on the 0 to 60 ft and 0 to 120 ft scales. This means that when zooming in on the 15 ft or 30 ft scales each dot is 1 inches, and on the 60 ft or 120 ft scale each dot is 3 inches. What Zoom Does The zoom feature on the LCR4000 will allow you to look at underwater readings in very fine detail and with the LCR4000's Total Screen Update you have the capability to zoom in on bottom, fish and structure, even after you have gone over the area. How To Use Zoom First position the Zoom Region (See Figure 16) next to the area that you want to expand by pressing the Range up or down button. Next, by pressing the Zoom On/Off button the Zoom will be activated. You will notice that the letter Z appears in the lower right hand corner of the display, indicating that the Zoom is on. You will also notice that the entire screen has been changed to show an expanded view of the area from the top of the Zoom Range to the bottom of the Zoom Range. The LCR4000'S Total Screen Update feature allows you to zoom in on an area even after you have passed over it. Figure 16 shows two screens, one with Zoom off and one after turning Zoom on.
OPERATIONAL INSTRUCTIONS The Zoom may be activated at any time (during normal transmitting and receiving or stop action, or reverse), but while learning to use the Zoom feature you might find it easiest to first press the Stop/Resume button to freeze the display. Now you can position the Zoom Range, activate the Zoom, and study the display. By pressing the Zoom On/Off button again you can go back to the un-expanded or normal display. Going back and forth several times will help you in understanding exactly what you are seeing with the Zoom activated. Some Additional Things You Should Know About Zoom A. While the Zoom is turned on you can move the Zoom Range up and down. This will allow you to search or look at an entire area in fine detail. B. You can also zoom in on information that has gone off the screen by pressing the reverse button. This can be done by either reversing and then activating the Zoom or by activating the Zoom and then reversing. See Section 6 for reversing instructions. C. The Zoom Range indication at the right of the display can be used for depth reference. For example in Figure 15 the Zoom Range is set between 17 feet and 25 feet. This means that when the Zoom is activated that you are looking at an expanded view of the area from 17 feet to 25 feet. D. While the Zoom is turned on, you cannot change Sensitivity, Depth Scale, or Display Speed. If you press any of these buttons while Zoom is on, a chirping sound will occur indicating an incorrect entry. E. Using the Zoom you can actually have a 0 to 7 foot scale on your LCR4000. To do this, first position the Zoom Range as far up as it will go on the 0 to 15 ft scale. Now turn on Zoom. The full screen is now a 0 to 7 foot scale. F. Remember that because of the LCR4000's Total Screen Update feature the information from 0 to 120 feet is always being recorded in memory. This means that even while you are using Zoom, no information is being lost. You can turn Zoom off, go to any depth scale and see all the information just as if you had been on that depth scale all along. Bottom Lock: Your LCR4000 has a very unique bottom lock feature. To activate bottom lock, hold down the zoom on/off button for 1 to 2 seconds. The Z in the lower right of the display will come on indicating that it is activated. Bottom lock works very similar to zoom except that the zoom region always stays on the bottom, therefore giving an expanded view from the bottom up. You will notice that as the bottom depth changes, the zoom cursor will change to maintain its position on the bottom

OPERATIONAL INSTRUCTIONS In bottom lock the expanded information always comes onto the screen at the same location. However, as the information moves across the screen and as the bottom contour moves up or down, the displayed information will also move so that you can see the actual bottom contour. Remember, in bottom lock, the bottom always comes on the screen at the same location but then as it moves across the screen it will move up or down as the bottom contour changes. When the bottom lock is activated, the LCR4000 will change to the 120 foot scale, so that the bottom can always be tracked. 9. Display Speed: The LCR4000 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. The speed of the boat and the display speed will have a large effect on the way information is displayed. You should select the fastest display speed for high speed operation, but use a slower display speed for idle or trolling speed.
10. Digital Bottom Reading: The digital bottom reading is displayed in the lower left area of the screen. This digital reading will operate while the unit is in the automatic mode, on any depth scale or with zoom or bottom lock activated. The digital bottom reading will not be seen while in the manual mode.
ADDITIONAL INFORMATION Some additional things you should know about the LCR4000. Some polarized glasses might affect 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 LCR4000 will find the bottom by selecting the proper sensitivity level and depth scale. You can then go back to the manual mode it 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 LCR4000 is a l6 just like most standard Humminbird flasher units. Other transducers, such as 32, cannot be used. 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 use 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 nonabrasive 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. Keep chemicals such as bug repellent, ammonia or gasoline away from the LCR case and lens. As with any electrical instrument, do not leave your LCR on the dash board or rear window area of the car. The sun can create extremely high temperatures which can damage the case and internal electrical components. During extended periods of nonuse, 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 LEARNING TO USE YOUR LCR 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 through 7 at idle or slow speed. These steps will insure that your LCR is working properly. Step 1 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 bottom 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. Step 2 Still moving at a slow speed, begin going toward deeper water. You will see that the LCR will display changes as small as 3 inches on the 0-15 foot scale. Continue to move into deeper water until the bottom return moves off the display. The LCR will automatically change to the next deeper depth scale (indicated at bottom of the display). Notice that the entire screen is changed to the new depth scale. This is the Total Screen Update feature.
LEARNING TO USE YOUR LCR Step 3 Press the depth set button once to change to the next lowest scale. If the bottom is deeper than this scale, the computer will automatically change back to the proper scale. By pressing the depth set button three or four times you will see that the depth scale will change down to the 0 to 15 foot scale and then to the 0 to 120 foot scale. Next change to the 0 to 15 foot scale. If the water is deeper than 15 feet, the depth scale will change to the correct scale. Step 4 Press the Stop/Resume button to lock the display. Move the Zoom Range down by holding down the button and position it down to the bottom of the water. Next, activate the Zoom by pressing the Zoom On/Off button. You will see that the entire screen has changed to give you a much more detailed view. Press the Zoom on/off button a few times to go back and forth so that you can get a better understanding of exactly what you are seeing. (You do not have to stop the display to use Zoom, but at first it is probably easier to learn this way). With Zoom on, move the Zoom Range up and down. This is how you can search up and down an entire area. Step 5 Turn the Zoom off. Press and hold down the Reverse button to bring information back onto the screen. As much as three full screens may be reversed. Pressing the Forward button moves the information back to the left. You can also zoom in on the information being reversed. Step 6 Press the Stop/Resume button to begin normal transmitting and receiving. Step 7 Press the Auto Sensitivity On/Off button to change to the manual mode. Notice that the word AUTO in the upper right hand corner of the display has gone off. Also, the area below the bottom is no longer blacked out. You can now change the sensitivity setting by pressing the increase + or decrease - buttons. Notice that the digital bottom reading goes off in the manual mode. Note: in the manual mode the depth scales will not automatically change. The automatic depth change works only in the automatic mode.

TROUBLESHOOTING Second, inspect the transducer cable from end to end for breaks, kinks, or cuts in the outer casing of the cable. Also ensure the transducer is fully submerged in water. If the transducer is connected to the unit through a switch, temporarily connect it directly to the unit and try again. If none of these items identifies an obvious problem, the transducer itself is probably the problem. Be sure to include the transducer if returning the unit for repair. 3. There is no bottom reading visible on the display. There are a number of possible causes for this condition. If the loss of bottom information occurs only at high boat speeds, the transducer needs adjusting. If the digital depth readout is working but there is no bottom visible on-screen, it is possible the depth range has been adjusted manually to a range lower than what is needed to display the bottom. Also, in very deep water, it may be necessary to manually increase the sensitivity setting to maintain a graphic depiction of the bottom. If you are using a transducer switch to connect two transducers to the unit, ensure the switch is in the correct position to connect a transducer that is in water. (If a trolling motor transducer is selected and the trolling motor is out of water, no sonar information appears.) It none of the above solve the problem, inspect the transducer cable from end to end for breaks, kinks, or cuts in the outer casing of the cable. If the transducer is connected to the unit through a switch, temporarily connect it directly to the unit and try again. If none of these items identifies an obvious problem, the transducer itself may be the problem. Be sure to include the transducer if returning the unit for repair. 4. When in very shallow water, I get gaps in the bottom reading and inconsistent digital depth indication. Your Humminbird fishfinder will work reliably in water 2 (.6m) or deeper. The depth is measured from the transducer, not necessarily from the surface.
TROUBLESHOOTING 5. The unit comes on before I press POWER, and won't turn off. Check the transducer cable. If the outer jacket of the cable has been cut and the cable is in contact with bare metal, you need to repair the cut with electrical tape. If there is no problem with the cable, disconnect the transducer from the unit and see if the problem is corrected, to confirm the source of the problem. 6. I get gaps in the reading at high speeds. Your transducer needs adjusting. If the transducer is transom-mounted, there are two adjustments available to you - height and running angle. Make small adjustments and run the boat at high speeds to determine the effect. It may take several tries to optimize high speed operation. This can also be a result of air or turbulence in the transducer location caused by rivets, ribs, etc. 7. My unit loses power at high speeds. Most Humminbird fishfinders have over-voltage protection that turns the unit off when input voltage exceeds 20 VDC. Some outboard motors do not effectively regulate the power output of the engine's alternator and can produce voltage in excess of 20 volts when running at high RPMs. Your fishfinder displays input voltage in the Diagnostic screen. Use this readout to determine if the voltage exceeds 20 VDC. 8. The screen begins to fadeout. Images are not as sharp as normal. Check the input voltage using Diagnostic. The fishfinder will not operate on input voltages below 10 VDC. 9. The display shows many black dots at high speeds and high sensitivity settings. You are seeing noise or interference caused by one of several sources. Noise can be caused by other electronic devices. Turn off any nearby electronics and see if the problem goes away. Noise can also be caused by the engine. If engine noise is causing the interference, the problem will intensify at higher RPMs. Increase the engine speed with the boat stationary to isolate this cause. Propeller cavitation can appear as noise on-screen. If the transducer is mounted too close to the propeller, the turbulence generated can interfere with the sonar signal. Ensure that the transducer is mounted at least 15" (38cm) from the prop.

WARRANTY HUMMINBIRD ONE YEAR FULL WARRANTY First year repairs (from original date of purchase) on your Humminbird fishfinder are absolutely free. This does not include physical damage to the unit or its accessory items. Any modification or attempt to repair the original equipment or accessories by unauthorized individuals will void the warranty. Return the warranty registration card and retain your bill of sale for warranty verification. Accessories not manufactured under the Humminbird trade name are not covered by our warranty. The customer is responsible for shipping charges to Humminbird. Humminbird will provide ground UPS or Parcel Post shipping back to the customer free of charge. This warranty applies to the original purchaser only. This warranty is in lieu of all other warranties expressed or implied and no representatives or persons are authorized to provide for any other liability in connection with the sale of our products. Humminbird reserves the right to perform modifications or improvement on its products without incurring the obligation to install the changes on units previously manufactured, sold, delivered, or serviced. THIS IS A FULL WARRANTY AS DEFINED BY THE FEDERAL WARRANTY ACT EFFECTIVE JULY 4 1975.
SERVICE POLICY SERVICE POLICY This Service Policy is valid in the United States only. This applies to Humminbird units returned to our factory in Eufaula, Alabama, and is subject to change without notice. All repair work is performed by factory-trained technicians to meet exacting factory specifications. Factory serviced units go through the same rigorous testing and quality control inspection as new production units. Even though you'll probably never need to take advantage of our incredible service guarantee, its good to know that we back our unit this well. We do it because you deserve the best. We will make every effort to repair your unit within three working days from the receipt of your unit. This does not include shipping time to and from our factory. Units received on Friday are usually shipped by Wednesday, units received Monday are usually shipped by Thursday, etc. We reserve the right to deem any product unserviceable when replacement parts are no longer reasonably available or impossible to obtain. After the original warranty period, a standard flat rate service charge will be assessed for each repair (physical damage and missing parts are not included). Please call our Customer Support Department to verify the service charge for your unit. The standard service charge includes UPS or Parcel Post freight only. If charges are not prepaid, the unit will be returned COD. If you are experiencing problems related to bottom or depth readings please send your transducer along with your unit when sending for repair.

CUSTOMER SUPPORT CUSTOMER SUPPORT If you have any questions, call our Humminbird Customer Support Hotline: 1-334-687-0503 Throughout the U.S. and Canada, hours are Monday-Friday, 8:00 a.m. to 5:00 p.m. Central time. If after reading Troubleshooting you determine your unit needs factory service, please attach a description of the problem and send it with the unit to the address below. If you are including a check please attach it to the unit. Humminbird Service Department Three Humminbird Lane Eufaula, AL 36027 USA