User manual HUMMINBIRD LCR 4000

[. . . ] TABLE OF CONTENTS INSTALLATION PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Parts Supplied. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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 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 0-30' 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 LCR4000's 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. 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. 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, USING THE LCR 4000 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. 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. [. . . ] 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. 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. MAINTENANCE AND WARRANTY WARRANTY HUMMINBIRD ONE YEAR FULL WARRANTY First year repairs (from original date of purchase) on your Humminbird fishfinder are absolutely free. [. . . ]