I have a lowrance LMS-334c iGPS and have been unable to access the main menu screen. when I hit the menu key twice it does not display the main menu. more recently I have been unable to access the pages screen. Can the unit be reset?
I think I can help with your issue. I have an LMS 334c and have had a few issues in the past. Called the factory (this answer is not listed any where in your manual) and they instructed me to "Soft Re Boot" my unit and it would put everything back to factory settings. Try this anytime it does not respond for whatever reason.
Turn the unit off.
At the same time press the Pages and Power button. Hold both down until you see the square box come up in the screen. You should have your factory settings again. May need to try a few times.
Lowrance said it works just like a computer, ever now and then it just tries to disect to much information at one time and hangs up.
Good luck. James Cantwell
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You have an elaborate unit! I like these. Your problem sounds more electrical than software related. Try taking all power off the unit for about 30 minutes, then powering up again. Of course, check your fuses. If you get the unit back up to the main menu, and things are not working properly, go to the various "reset" options in your manual for that mode of operation.
If it does not succeed in getting power, I recommend contacting your local Marine/Lorrance dealer for service.
Try setting up the speed in the overlay data menu again: 1. Press MENU, arrow down to OVERLAY DATA and press ENT 2. Highlight the option for speed (WATER SPEED or GROUND SPEED) and press ENT 3. Highlight the REMOVE button and press ENT 4. Highlight (PRESS ENT TO ADD) and press ENT 5. Arrow down to SONAR DATA and press ENT 6. Arrow down to WATER SPEED and press ENT, a check will be displayed in the box 7. Press EXIT twice
If the speed is still flashing, the data is still invalid. Try resetting the unit completely: 1. Turn unit off 2. Press and hold the PAGES and POWER key until the "DO NOT RELY..." alarm appears 3. Set up the overlay data for speed again: 1. Press MENU, arrow down to OVERLAY DATA and press ENT; 2. Highlight (PRESS ENT TO ADD) and press ENT; 3. Arrow down to SONAR DATA and press ENT; 4. Arrow down to WATER SPEED and press ENT, a check will be displayed in the box; 5. Press EXIT twice
If the speed is still flashing, good chance the speed sensor is bad even though the wheel still spins. Install the latest LMS-332 updates from http://www.lowrance.com/en/Products/Marine/Full-Size-SonarGPS-Chartplotter-Combos/LMS-332C/Downloads/LMS-332C-Software-Update/ and set up the overlay data again.
If it turns out that the speed sensor is bad, just use speed from the GPS. This can be set up from the overlay data menu as GROUND SPEED.
(note: the overlay data must be set up for each page individually. So if you set up speed to be displayed on the map screen, it will not also be set up on the sonar page)
The LGC-2000 is bad would be the most likely cause, but if this started right after you changed the cables, Try connecting the NMEA 2000 network to a different power source than the main power. If you still have the original cables, and you didn't have the problem before, try using those again to make sure there isn't anything wrong with any of the new cables.
But most likely, the LGC-2000 is toast and you will want to contact Lowrance support to see about getting it repaired/replaced.
1. Turn the LMS-330 off 2. Press and hold the ZIN, ZOUT, and PWR buttons 3. Release the three buttons once you see the "warning, do not rely..." message appear
If you get that far, the problem is solved. If you get boot failed again, try installing the latest update which can be downloaded from http://www.lowrance.com/en/Downloads/Product-Software-Updates/
If you still get boot failed, you will need to get the LMS-330 repaired/replaced. You can contact Lowrance support at 800-324-1356 or email them by going to http://www.lowrance.com/en/Support/Product-Support/Contact/
A "soft reset" can be accomplished by pressing and hold "Pages" key and press and hold "PWR" key till USA map comes on , then release both. A "hard reset" requires press and hold both "Z in" and "Z out" buttons and press and hold "PWR" button releasing all three when USA map appears.