Furuno LS-4100 Operator's Manual
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Furuno LS-4100 Operator's Manual

5" echo sounder
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5" ECHO SOUNDR
LS-4100

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Mike
January 20, 2025

What is the fuse size for the LS4100

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1 comments:
Mr. Anderson
May 14, 2025

The fuse size for the Furuno LS-4100 is 1A 125V.

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Summary of Contents for Furuno LS-4100

  • Page 1 5" ECHO SOUNDR LS-4100...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS FOREWORD ...iii SYSTEM OVERVIEW... iv OPERATION ...1 1.1 Control Description...1 1.2 Turning the Power On/Off ...1 1.3 Adjusting Display Contrast, Brilliance...2 1.4 Choosing a Display, Frequency.2 1.5 Menu Operating Procedure...5 1.6 Automatic Operation ...5 1.7 Manual Operation...6 1.8 Measuring Depth...8 1.9 Choosing Picture Advanced Speed ...8...
  • Page 3 A warning label is attached to the equipment. Do not remove the label. If the label is missing or damaged, contact a FURUNO agent or dealer. WARNING To avoid electrical shock, do not remove cover. No user-serviceable parts inside.
  • Page 4 The installer of the equipment is solely responsible for the proper installation of the equipment. FURUNO will assume no responsibility for any damage associated with improper installation. Use the specified power cable.

  • Page 5: Foreword

    Comprised of a display unit and a transducer, the LS-4100 displays underwater conditions on a bright 5-inch monochrome LCD. The main features of the LS-4100 are Bright 5-inch monochrome LCD gives excellent readability even in broad daylight. Automatic function permits unattended adjustment of range and gain.

  • Page 6: System Overview

    System configuration GPS Navigator Wind Indicator : Standard : Option : User supply Equipment lists Standard supply Name Display Unit LS-4100 520-5PSD 520-5MSD Transducer 520-5PWD 525-5PWD Triducer (transducer 525ST-MSD plus spd/temp sensor) 525ST-PWD Tapping screw (4 pcs., 5 x 20 SUS304, 000-802-081) Installation Materials Washer head screw B (4 pcs., M4 x 20 SUS304, 000-804-742)

  • Page 7: Operation

    Selects basic display range. RANGE MARK ECHO SOUNDER POWER BRILL LS-4100 Display unit 1.2 Power On/Off Press the [POWER/BRILL] key more than one second to turn on the power. The unit beeps, the startup screen appears, and then the equipment checks the ROM and RAM for proper operation and displays program number.

  • Page 8: Adjusting Display Contrast, Brilliance

    ROM : OK RAM : OK Program No: 0252318-01.** ** Program version no. Start-up screen To turn off the power, press and hold down the [POWER/BRILL] key until the screen goes blank. The time remaining until power is turned off is counted down on the screen.

  • Page 9: Dual Frequency Display

    Single frequency display 50 kHz The sounder uses ultrasonic signals to detect bottom conditions. The lower the frequency of the signal, the wider the detection area. Therefore, the 50 kHz frequency is useful for general detection and judging bottom condition. 200 kHz The higher the frequency of the ultrasonic signal the better the...

  • Page 10: Nav Data Displays

    Bottom-zoom display This mode expands bottom and bottom fish in the range width set with ZOOM RANGE of the SYSTEM menu. This mode is useful for determining bottom contour. When the bottom depth increases, the display shift to keep the bottom echo at the lower part of the screen.

  • Page 11: Menu Operating Procedure

    1.5 Menu Operating Procedure The LS-4100 has three menus: Main, System and Installation. Below is the basic menu operating procedure. 1. Press the [MENU/ESC] key to open the main menu. Page 1 or Page 2 of the main menu appears depending on the page last used.

  • Page 12: Manual Operation

    5. Press the [MENU/ESC] key to close the menu. The auto mode in use is shown as (Auto-Fishing) or (Auto-Cruising) at the top left corner on the screen. Note: When in the auto mode, SHIFT and CLUTTER cannot be adjusted manually.
  • Page 13 Basic ranges (default) 3. Press the [MENU/ESC] key to close the window. Shifting the range The basic range may be shifted up or down in the manual mode as follows: Window can be shifted up and down to select the depth. Display Range and display shift concept 1.

  • Page 14: Measuring Depth

    1.8 Measuring Depth The VRM (Variable Range Marker) functions to measure the depth to fish schools, etc. 1. Press ▲ or ▼ to place the VRM on the object which you wish to measure range. 2. Read the VRM depth just above the VRM.

  • Page 15: Suppressing Interference

    1.10 Suppressing Interference Interference from other acoustic equipment operating nearby or other electronic equipment on your boat may show itself on the display as shown in the figure below. To suppress interference, do the following: 1. Press the [MENU/ESC] key to open the main menu.

  • Page 16: Erasing Weak Echoes

    1.12 Erasing Weak Echoes Sediment in the water or reflections from plankton may be painted on the display in low intensity tones. Appearance of weak echoes These weak echoes may be erased as follows: 1. Press the [MENU/ESC] key to open the main menu.

  • Page 17: Alarms

    1.14 Alarms Alarm description The LS-4100 has six conditions which generate both audio and visual alarms: bottom alarm, normal fish alarm, bottom lock fish alarm, water temperature alarm, arrival alarm and speed alarm. (The water temperature, arrival and speed alarms require appropriate sensors.)

  • Page 18: Waypoints

    8. Press ▼ to choose FROM. 9. Press ► to show the options menu. Depth, temperature, speed setting window 10. Use ▲ or ▼ to set starting depth, temperature or speed as appropriate. For FISH (B/L), the starting depth is the range from the bottom.
  • Page 19 3. Press the [MARK] key again. When TLL or FURUNO-TLL is selected at TLL OUTPUT on the System menu, the latitude and longitude position at the cursor is output to the navigator.
  • Page 20 WAYPOINT LIST 0101 0203 ------ ------ ------ ------ ------ ------ ------ ------ ------ [MENU]: Exit Waypoint list 4. Press ▲ or ▼ to choose an empty waypoint and press ►. Press ► again. NEW WAYPOINT Name FREQ. 04 ------ ENT : 34 22.796'N : 136 07.264'E Erase?

  • Page 21: Setting Up Nav Data Displays

    1.16 Setting Up Nav Data Displays The user may arrange the nav data displays as desired. 1. Use the [MODE] key to show the NAV DATA-1 or 2 display, whichever you want to set up. 2. Press the [MENU/ESC] key to close the mode selection window.

  • Page 22: Other Menu Items

    Temperature Depth 69.8 32.8 Position GPS 3D Heading TRUE/MAG# 30 00.065'N 130 00.574'E Time to Go Trip meter 12.1 = GPS receiving status (Displays when connecting with GP-310B/320B and "In/Out" is selected at the Installation menu.) NO FIX: Position cannot be found. GPS 2D: 2D (dimension) GPS position fix GPS 3D: 3D GPS fix GPS W2D: 2D WAAS position fix...
  • Page 23 4. Use ▲ or ▼ to choose Off, Tone or Mesh as appropriate. “Mesh” paints the white line in darker tone than “Tone.” 5. Press the [MENU/ESC] key to close the menu. Fish school clearly shown White line 52.6 52.6 White Line OFF White Line ON (Mesh) How white line works...

  • Page 24: Menus

    2. SYSTEM MENU The System menu mainly consists of items which once set do not require frequent adjustment. You may display this menu by choosing SYSTEM MENU at page 2 of the main menu and pressing ►. SYSTEM MENU LANGUAGE English DEPTH UNIT : ft...
  • Page 25 Requires appropriate nav data. WATER TYPE: Choose the water type with which to use the LS-4100, from Salt or Fresh. KEY BEEP: Turn key beep on or off. BATT VOLTAGE: Turn the battery voltage indication (appears at the top right corner on the screen) on or off.
  • Page 26 SPEED CALIB.: If the speed sensor-generated speed indication is wrong, you can correct it here, when “Own” is selected as speed source. For example, if the speed indication is 10% lower than actual speed, enter +10. The setting range is –50% to +50%. Page 3 BASIC RANGE 1 - BASIC RANGE 8: Set range of each of the eight basic...

  • Page 27: Maintenance, Troubleshooting

    3. MAINTENANCE, TROUBLESHOOTING WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Only qualified personnel should work inside the equipment. 3.1 Maintenance Regular maintenance is essential for good performance. Checking the items listed in the table below monthly will help keep your equipment in good shape for years to come.

  • Page 28: Troubleshooting

    3.6 Troubleshooting The table below provides basic troubleshooting procedures which the user may follow to restore normal operation. Troubleshooting table If… Then check … neither echo nor battery voltage. fixed range scale fuse. appears power cable. no echo appears if display advance but the fixed speed is set to “Stop.”...

  • Page 29: Test Pattern

    4. The ROM, RAM and NMEA port are checked, with the results shown as OK or NG (No Good). For any NG, request service. (A special connector is required to test the NMEA port. Nothing appears if no connector is connected.) 5.

  • Page 30: Installation

    4. INSTALLATION 4.1 Display Unit Mounting considerations The display unit can be installed on a desktop, on the bulkhead or flush mounted in a panel. When choosing a location keep the following in mind: Keep the display unit out of direct sunlight.
  • Page 31 submerged, even when the boat is rolling, pitching or up on a plane at high speed. A practical choice would be somewhere between 1/3 and 1/2 of the boat’s length from the stern. For planing hulls, a practical location is generally rather far astern, so that the transducer is always in water regardless of the planing attitude.

  • Page 32: Transom Mount Transducer

    Construction of fairing block 3. Drill a hole just large enough to pass the threaded stuffing tube of the transducer through the hull, making sure it is drilled vertically. 4. Apply a sufficient amount of high quality caulking compound to the top surface of the transducer, around the threads of the stuffing tube and inside the mounting hole (and fairing...
  • Page 33 Note: If necessary, to improve water flow and minimize air bubbles staying on the transducer face, incline the transducer about 5° at the rear. This may require a certain amount of experimentation for fine tuning at high cruising speeds. 4. Fill the gap between the wedge front of the transducer and transom with epoxy material to eliminate any air spaces.

  • Page 34: Inside-Hull Transducer

    Bracket Transducer Hull 2 to 5 Epoxy material 525-5PWD, mounting 4.4 Inside-hull Transducer The thru-hull mount transducer (520-5PSD, 520-5MSD) may also be installed inside the hull, following the procedure below. Necessary tools You will need the following tools: Sandpaper (#100) Silicone sealant Silicone grease Remarks on installation...

  • Page 35: Optional Triducer

    3. Press the [MODE] key to choose SINGLE FREQ. 4. Choose 50 kHz or 200 kHz, and then press the [MENU/ESC] key to close the mode menu. 5. Press the [MENU] to show the main menu, and then press ▲ to select Auto mode.
  • Page 36 Transom hole: 19mm or 3/4” (optional) Cable clamp holes: 3mm or 1/8” Screwdrivers Straight edge Marine sealant Pencil Zip-ties Water-based antifouling paint (mandatory in salt water). Mounting location To ensure the best performance, the sensor must be submerged in aeration-free and turbulence-free water. Mount the sensor close to the centerline of the boat.
  • Page 37 Warning: Always wear safety goggles and a dust mask. 3. Using a 4 mm, #23, or 9/64” bit, drill three holes 22 mm (7/8”) deep at the locations indicated. To prevent drilling too deeply, wrap masking tape around the bit 22 mm (7/8”) from the point.
  • Page 38 4. Repeat step 1 to ensure that the angle of the sensor is correct. Note: Do not position the sensor farther into the water than necessary to avoid increasing drag, spray, and water noise and reducing boat speed. 5. Using the vertical adjustment space on the bracket slots, slide the sensor up or down to provide a projection of 3 mm (1/8”).

  • Page 39: Optional Water Temperature/Speed Sensor

    4. Position the second cable clamp halfway between the first clamp and the cable hole. Mark this mounting hole. 5. If a hole has been drilled in the transom, open the appropriate slot in the transom cable cover. Position the cover over the cable where it enters the hull.

  • Page 40: Wiring

    Coat with silicone sealant. Brim Water temperature/speed sensor ST-02MSB, ST-02PSB 4.7 Wiring Connect the LS-4100 power/data cable assy MJ-A7SPF0005-020 (2 m, supplied) to the POWER, and the transducer cable to the XDR connector. Refer to the interconnection diagram to connect cables. Leave slack in cables to facilitate checking and maintenance.

  • Page 41: Iec 61162-1 Data Sentences

    4.8 IEC 61162-1 Data Sentences The tables below show the data sentences which can be input to and output from the LS-4100. The transmission speed for both input and output is 4800 bps. Data is output at two-second intervals. Input data sentences...

  • Page 42: Installation Menu

    Choose On to output input data. Off: Outputs the data sentences of LS-4100 only. On: Outputs the data sentences of LS-4100 and sentences which are input from other equipment. 6. To restore normal operation, turn off the power and then turn it on again.
  • Page 43 GPS WAAS: Chooses how to use the WAAS signal when connecting with a WAAS receiver, for example GP-320B. Note: WAAS is currently in the developmental phase. During the developmental phase the reliability and availability of the WAAS signal cannot be guaranteed. Therefore, any position data should be verified against other sources to confirm reliability.

  • Page 44: Specifications

    SPECIFICATIONS OF ECHO SOUNDER LS-4100 GENERAL 1.1 TX Frequency 50 kHz or 200 kHz, 50/200 kHz dual transmitting selectable 1.2 Transmit Method Single or dual transmitting 1.3 Output Power 300 Wrms 1.4 TX Rate Max. 500 pulse/min 1.5 Pulse-length 0.1 to 0.8 ms DISPLAY UNIT 2.1 Display system...
  • Page 47 MJ-A10SRMD XDR- SHIELD XDR+ TEMP0V TEMP SPD0V/SHIELD +12V MJ-A6SRMD XDR- SHIELD XDR+ TEMP0V TEMP SPD0V/SHIELD +12V...
  • Page 48 All rights reserved. All rights reserved. Printed in Japan Printed in Japan PUB.No. PUB.No. OME-23710 OME-23710 ( ( HIMA HIMA ) ) LS-4100 LS-4100 Your Local Agent/Dealer Your Local Agent/Dealer FIRST EDITION : FIRST EDITION : MAR. MAR. 2003 2003...

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