Try doing what they call a soft reboot on your unit sets all your settings back to factory settings
SOURCE: problem with interference lowrance x25fishfinder
Transducer will stop getting readings if it gets air under it. If it's lower surface is too much above or below the bottom of your boat, this can happen.
SOURCE: proper set up for lowrance sonar
Where do you use your boat?
There are so many variables it's hard to fit it all here, but there are some excellent tutorials on the Lowrance website. The most important thing is to pick the right frequency, for the depth of the water. (200khz for less than 70', and 50 khz for greater depths). Depending on how serious you are about fishing, there are a lot of extras that you may never use. The key is to figure out which features will help you the most and forget about the rest.
You may also get some help at this link: FixYa Service Directory
It's common for SONAR to lose contact with the bottom at high speeds. The better the transducer installation, the faster you can go. Turbulence and bubbles will cause the SONAR to drop out. Lowrance's transducer installation guide explains it very clearly.
SOURCE: How do you get the fish to show up on the screen
Are you looking for the little fish symbols?
Press MENU, down arrow to SONAR FEATURES and press ENT. Arrow to FISH SYMBOLS and press ENT. Press EXIT twice. Any significant return in the water will now show up as a fish symbol.
Are you looking for the fish arches?
You won't get any arches unless the boat is moving and of course there are fish passing within the transducers signal. The shallower the water, the less area you are covering and less likely to get a fish return.
There is an OK guide to understanding what you see on the sonar screen at the link below. It if pretty technical but parts of it may help you out.
http://primus.lowrance.com/support/resultDisplay.do?gotoLink=5&docType=1000&contextId=351%3A5.47%2C11918.11930%2C22.47&clusterName=ClusterPublic&lang=english&docset=%2FDocuments%2FSonar&contentId=9de88fa2-0b60-4b44-a470-29ee14767b3e&responseId=135ccbe2cfd4f608%3A1fe88d%3A122773df7e0%3A7c2&groupId=4&answerGroup=1&score=981&page=http%3A%2F%2Fprimus.lowrance.com%2Ficr%2FSonar%2FChart+Tutorial.htm&result=0&excerpt=Chart+Tutorial+Deciphering+Sonar+Charts.&question=chart+tutorial&resultType=5000#Goto5
An X96 owners manual can be downloaded from http://www.lowrance.com/en/Downloads/Manuals/
SOURCE: When we are deep water
Im not familiar with your particular unit but you should be using a low frequency transducer for water over 500'; something like a 50 kHz transducer or a dual frequency transducer like a 50/200kHz for detail with the high freq. but increased depth range on the lower frequency. As far as setting it to 250 ft, you should be able to use the range feature and adjust the maximum to 250'. typically the factory default is automatic so it will caonstantly adjust the range based on the maximum current depth.
• Security-related information
1. Forced Power ON mode (All models)
Even when the security (Mask key) is approved, resetting
the unit while holding the ATT and Preset 4 keys makes it
possible to turn the power ON for 30 minutes. After 30
minutes have elapsed, it is not possible to return to the
previous condition unless the unit is reset again.
2. Method of registration of the security code after EEPROM
(Tuner Unit ***'y) replacement
(Code security model)
(1) Enter the test mode. (See " 1. How to enter the test
mode")
(2) Press the CLK key to enter the security registration
mode.
(3) Enter the code using the Preset 1/2/3/4 keys.
Example: To enter "3510"
• Press the Preset 1 key 4 times.
• Press the Preset 2 key 6 times.
• Press the Preset 3 key twice.
• Press the Preset 4 key once.
(4) Press and hold the DISP key for 3 seconds until
"APPROVED" is displayed.
(5) Exit from the test mode. (See " 2. How to exit from the
test mode")
(Note) All Clear is not applicable to the security code of
this model.
3. Simplified method of clearing the security code (K Type
only)
(1) While the code entry is requested, press and hold the
VOL UP key for 3 seconds while holding the DISP
key pressed. (This should turn "----" off.)
(2) Enter "KCAR" from the remote. (Same way as the 00
model)
Press the 5 key on the remote twice, then press the
Track Up key. (This enters "K".)
Press the 2 key on the remote 3 times, then press the
Track Up key. (This enters "C".)
Press the 2 key on the remote once, then press the
Track Up key. (This enters "A".)
Press the 7 key on the remote twice, then press the
Track Up key. (This enters "R".)
(3) The security code is cleared and the unit enters the
ALL OFF mode.
(4) If you commit a mistake in the code entry, the unit
enters the code request mode again.
4. Method of writing the Mask key while the EEPROM is in
the initial status
(1) Enter the test mode. (See " 1. How to enter the test
mode")
(2) Press the CLK key to enter the Mask key registration
mode. "TRANSMIT1" should be displayed now. The
display at this time should show " < > " in place of " [ ]
".
(3) Point the Mask key remote toward the light sensor,
and press and hold its key for more than 0.5 second.
(4) When "TRANSMIT2" is displayed, press and hold the
key on the Mask key remote for more than 0.5 second
again. The first and second counter codes are not
compared at this time.
(5) When "APPROVED" is displayed, the write operation
is complete. Now the demonstration mode is initiated
and the test mode is terminated.
(Note) In the same way as previous models, if 30 minutes
have elapsed with no code written, an error occurs
and the power is turned OFF.
5. Method of initializing the Mask key
(How to reset the unit from the Mask key approved condition
to the factory condition)
(1) Enter the test mode. (See " 1. How to enter the test
mode")
(2) "TRANSMIT1" is displayed and the Mask key entry
request mode is initiated.
The display at this time should show " ∗ ∗ " in place of
" [ ] ".
(3) Press and hold the key on the Master key remote for
more than 3 seconds.
(4) When "TRANSMIT2" is displayed, press and hold the
key on the Master key remote for more than 3 seconds
again.
(5) When "APPROVED" is displayed, the Mask key is
cleared, the demonstration mode is initiated, the test
mode is terminated and the unit returns to the factory
condition.
6. Method of clearing all Mask key-related data
(1) Enter the test mode. (See " 1. How to enter the test
mode")
(2) Press the CLK key to enter the Mask key registration
mode. "TRANSMIT1" should be displayed now.
(3) Point the Master key remote toward the light sensor,
and press and hold its key for more than 3 seconds
(until the level display shows the full condition).
(4) When "TRANSMIT2" is displayed, hold the key on the
Mask key remote for more than 3 seconds again.
If "TRANSMIT1" is displayed in place of "TRANSMIT2",
restart the procedure from step (3).
(5) When "APPROVED" is displayed, all security data is
cleared and the unit returns to the condition before
Mask key writing with the EEPROM in the initial status
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Usually answered in minutes!
The unit works fine after you hit the exit button twice. This sends the unit back to the full screen mode, only problem is you have to reset all your settings, such as fish ID, Temp, Speed. once you turn the unit off it will go back to the LCD test mode. Then you have to reset all the settings each time you power doen the unit.
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