Question about Lowrance LMS-337CDF GPS Receiver

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No depth reading

New installation of used 1month old system. Digital depth keeps flashing 60'. Instead of bottom contour I get vertical lines on the display. The temp reading is fine, so I know my cable has connection with the head unit. Running the depth in demo shows contour, so the screen must be fine.

Posted by naughtical on

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Anonymous

  • 113 Answers

SOURCE: Lowrance LCX-19C GPS Receiver Problem

It sounds like you may have to send it out for service, but before you you do there are a few things you can try.

Low voltage can cause erratic behavior. Since you already wired directly to the battery, check the plug for corrosion.

Try unplugging the transducer cable to see if the display still behaves erratically. You wont see depth readings but you should still see the screen going black. If no erratic behavior with transducer unplugged then problem is in the transducer cable or the plug. A common source of failure is at the plug because the added stress of plugging and unplugging cables can cause the socket to twist slightly which can cause a short.

Make sure you have the latest software update.

How to see if your LCX-19C is already using version 1.8.0 software:

  1. Press the MENU button twice on your LCX-19C.
  2. Select SYSTEM SETUP.
  3. Select SOFTWARE INFORMATION.
  4. The software version for your unit is located under the line that says "LCX-19C" (ex. "Version 1.8.0").
  5. If your version is the same version listed above, there is no need to download the software.
If it is lower than 1.8.0 you can download the update from this link: LCX-19C UPDATE
Copy it onto a blank MMC card and install it in your GPS. The GPS should prompt you on how to install the update.

If you need to send the unit in for service click this link: LOWRANCE SERVICE

Good luck!

Posted on Mar 17, 2008

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Links_Man02

  • 2 Answers

SOURCE: Not reading properly

You might try adjusting the Grayline setting. It's purpose it to distinguish between hard & soft bottoms. Press MENU, select GRAYLINE, the scale appears like when adjusting sensitivity you can adjust up or down with arrow keys. Get over a non reading soft bottom then adjust. The change is reflected on the screen as you adjust it.

Posted on Aug 29, 2008

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First time run, everything mounted correctly, power on, no depth or sonar return.


So the depth is flashing and you don't see any bottom return at all, right?

Are you in the water, or trying it out before you put the boat in the water?
If you are not in the water, try it out in the water because it can be difficult to get any kind of return out of the water.

Try resetting the X67c to factory defaults:
1. Turn unit off
2. Press and hold the down arrow key
3. Press PWR while still holding the down arrow key, the unit will enter production test mode. Let go of the down arrow key
4. Press EXIT 5 times
5. Press ENT and the unit will shut off

Turn it back on and if you still have the same problem, depth flashing 0.0 or 0.5 or 60 probably and no bottom, then a good bet would be a bad transducer.





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