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Turn off the Bottom Alarm by again pushing the alarm "On/Off button. The alarm setting
will then go to zero. If the alarm is turned on again before the unit is turned off, it will still be set at
the previous setting.
6. Display: Stop/Resume: Anytime during the operation of the LCR, the operator may
"freeze" the display by simply pushing the display "Stop/Resume" button. This feature will aid in
the learning and interpretation of the signal on your LCR display by giving you time to study the
display. The "Stop/Resume" will not change any original settings when once again activated.
Note: Sensitivity and display speed may not be changed while the display is stopped. When the
"Stop/Resume" button is pressed again the unit will resume reading at the immediate point at
which the boat is sitting on the water.
7. Display Speed: The LCR 3004 has a total of eight display speeds. When the unit is turned on
the display will be advancing at almost maximum 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 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.
8. Digital Bottom Reading: The Digital Bottom Reading is displayed in the lower left area
of the screen. It will operate while the unit is in the automatic mode. The Digital Bottom Reading
will not be seen while in the manual mode.
Some additional things you should know about the LCR 3004:
• Some polarized glasses might effect your view of the LCR display. It could result in a prism or
rainbow effect. This condition can possibly be improved by a slight adjustment in tilt.
• If you get confused while in the manual mode, for instance, if you don't know where the bottom
is, then press the auto on/off button to turn on the automatic mode. The LCR 3004 will find the
bottom by selecting the proper sensitivity level and depth scale. You can then go back to the
manual mode if desired.
• In order for your LCR to operate well at high speeds, you must have a properly mounted
transducer. Please read the transducer mounting procedure carefully.
• The transducer for the LCR 3004 is a 16° 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 non-abrasive cleaner such as
Windex. Do not wipe while dirt or other gritty material is on the lens. Care should be exercised to
avoid scratching the lens. 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 non-use, such
as winter, you should store the LCR and other removable depth sounders in the house or garage.
This will help prolong the good appearance and operation of these instruments.