Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Muskiebait

520 c difficulties

12 posts in this topic

Hey all, I have a 520 c, the graph works great, but the temp gauge isn't reading, and the GPS doesn't work at all, any ideas... it is on a Ranger 1860 prerigged, so the transducer is in the hull. Thanks for any info.

Share this post


Link to post
Share on other sites

Lots of questions..

First, has it ever worked or is this all brand new?

Is the water temperature probe connected to the network? I'm guessing it is. The graph when new will default to the standard water temp probe that typically is part of the depth transducer or skimmer type that mounts on the outside of the transom. With my boat (Ranger) the depth transducer is mounted to the hull like yours so there is a seperate water probe and it is connected to the Lowrance Network.

A few things you can do to make sure it's working and that's to check the NEMA bus set-up. There is an option in the menus. It will show everything that is connected to the network bus. Look for the EP probe. If it is there, then you need to go back onto your sonar screen and select "overlay data" and then select that probe to be displayed on your screen. You can put it on the GPS screen too if you wish.

I'm not sure why the GPS isn't working. Does it get any signals at all or is it giving you a message that the GPS module is not responding when you go to the satellite status page?

I'm also wondering if there is power to the NEMA (network) bus. It needs 12VDC to operate. The depth transducer would work fine, but anything on the bus such as temp probes and GPS pucks wouldn't.

Share this post


Link to post
Share on other sites

Limit it sound like you may be on something, the Gps reads what you said there, and the temp just flashes and it isn't even close to the right temp. this is a brand new rig all dealer installed about 2 weeks ago. So where do I start there is a mess of wire unde there...

Share this post


Link to post
Share on other sites

I would bring the rig back to the dealer....should be under warranty yet if they installed that recently.

Share this post


Link to post
Share on other sites

If taking it back to the dealer is an option, I'd have them take a look at it.

But, if you would rather learn a little more about the insides of your boat and how it's wired then now would be the time to do it. grin.gif

There are two ways that the NEMA power can be supplied to the network. One way is through the 520 itself. If you trace the main power wire from the 520 down to where it's wired, you should see three pigtails in the cable. One is power for the unit itself (red,black,white wires), and one is power for the NEMA network (red,black,bare/shield wires). On mine the NEMA power wire from the 520 is taped off and not used. That is because the factory used option #2 which is to have a dedicated NEMA power wire that is tapped to a 12V source and then is connected to one of the network T's.

What you'll have to do is figure out where the NEMA gets it's power. First follow that power cable with three individual wires from the 520 and see where they go. I forgot to mention that the third wire in that bunch is for NEMA communications and it has a handful of small colorful wires. This is probably taped back too and unused. If you find that the NEMA power wire is not connected they may have used option #2 that I mentioned above.

Now you'll have to find the network T's and follow where the wires go from the tops of them. In your case you should have one for the GPS puck, one for the water sensor I'm guessing, one for the 520, and maybe one for the NEMA network power. If you have no NEMA power T and the red/black/shield wire from the 520 isn't connected then they didn't even connect the NEMA power. This is not uncommon from dealer rig jobs because they usually don't understand the LowranceNET system. The network NEEDS power to operate.

If they didn't wire it up, then you should fuse the wire with a 3A fuse and tap it to a 12VDC power source. If you do find the NEMA power wire is connected either through the 520 or through a network T, then check the fuse.

The manual also suggests using a switch for the power leads and maybe they wired it through one of your unused accessory switches which you will need to turn on/off everytime you want to run the network.

Share this post


Link to post
Share on other sites

All right I admit I am an (Contact Us Please) when it comes to this stuff, but the dealer is 3 hrs away, and I have looked behind the actual graph and it has 4 different plug ins, is it possible that these are mixed up and that is why it isn't getting the correct power?

Share this post


Link to post
Share on other sites

No, they are all different and you cannot mix and match the wires because of the way they are configured with pins, etc. Each cable can only go into it's own plug in.

Looking at the back of the graph, you want to take a look at cable connected to the PWR/Data connector. This is a fairly heavy cable and it should have the three individual pigtails coming out of it. Follow these three pigtails to see where they go.

Share this post


Link to post
Share on other sites

Any luck?

Share this post


Link to post
Share on other sites

Hey limit, I got up under the dash this weekend and just looked around, I snapped a piece off of One of the T's by accident, found out the hard way that that was for the temp sensor on the bow mount as now every thing is 32degs. I see the cable you are talking about, and they didn't hook it up. so I guess that would lead me to have to figue out the rest. any diagrams would be appreciated.thanks

Share this post


Link to post
Share on other sites

Hey limit I got power to the GPS Puck now and I am getting a fix on my position it actually aquires a position now so I must have it hooked up now, now my only question is will the temp sensor work as well, I won't be putting it in the water till this weekend, so what is your bet, do I have a temp as well or do I have to hook up something else???

Share this post


Link to post
Share on other sites

Sorry I didn't get back sooner, I missed your last post. blush.gif

Sounds like you're on the right track now. You should be getting a temperature reading although it'll be the ambient air temp when out of the water. If the temp probe is on the network it should work.

Go into the menu and find the NEMA setup option. I don't recall exactly what it's labeled but that should get you in the right direction. You then should be able to see everything that is connected to the network such as the temperature probe. If the only thing you see is GPS puck, then there is either a problem with the probe, the probe cable, or the T that it's connected to.

You mentioned that you broke part of the T off but didn't say if it would be enough to really screw it up, so I can't say if that is causing the problem now or not. You might want to take the water probe connector and swap it with the GPS connector (swap the wires from T to T) and then if you lose GPS from the network, that T is shot. If you have the blue T's they can be a real pain to disconnect as I found out on my boat. I messed up a T too. blush.gif After swapping the temp probe with the GPS probe, the temp should show up on the NEMA display screen that indicates what's connected to the network.

Share this post


Link to post
Share on other sites

I have a replacement T on the way so that should be here in a day or two, and then I hope I am back in business, not the the temp matters that much once you have located the fish. Thanks for all the help...

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • DonBo
      What a great day!  
    • Rick
      The Minnesota Department of Natural Resources invites citizens to learn about proposed recreation opportunities in Centennial State Forest, a 3,394-acre state forest in Cass County donated to the DNR in 2013.  The meeting will be from 5:30 to 7:30 p.m. on Monday, June 26, in the Walker Community Center Rotary Room, 105 Tower Ave., Walker. Following a presentation at 6 p.m., there will be time for questions and answers, map review and comments. Minnesota state forests are classified into three groupings for off-highway vehicle (OHV) and motor vehicle use: In “managed” forests you may ride on all state forest roads, signed trails and non-designated routes that are not posted closed. In “limited” forests you may ride on all forest roads and trailed signed for specific motor vehicle use. “Closed” forests are open only to highway-licensed vehicles on forest roads. As part of the overall planning process, the DNR is proposing to classify Centennial State Forest as “limited.” The DNR is also proposing to designate approximately 11 miles of forest roads, to allow OHV and motor vehicle use on those roads. Comments received at the meeting will be used to develop a final recommendation that will be submitted to the DNR commissioner for approval. Written comments may be submitted by fax to 651-297-1157, by email to foresttrailplanning.dnr@state.mn.us, or by mail to Joe Unger, Parks and Trails Division, Minnesota DNR, 500 Lafayette Road, St. Paul, MN  55155-4039. The DNR will accept written comments through Wednesday, July 26. For more information call: Tim Williamson, OHV acquisition and development specialist, Parks and Trails Division, 218-308-2369. Joel Lemberg, Backus Area forest supervisor, Forestry Division, 218-947-3232, ext. 223. For more information, visit the Centennial State Forest webpage. Discuss below - to view set the hook here.
    • Rick
      The Minnesota United, a new professional soccer team nicknamed the Loons, has teamed up with the Department of Natural Resources to offer licensed hunters and anglers an opportunity to purchase discounted tickets to a home match Sunday, May 7, against Sporting Kansas City.  “We hear the call of the loon while we’re out on the water and exploring on land, and now it also means Major League Soccer,” said Jenifer Wical, the DNR’s Fish and Wildlife marketing coordinator. “If you have a fishing or hunting license now you can get this deal on tickets to a Minnesota United game.” This offer is made possible through a partnership between the DNR and Minnesota United. The discount is available for all price points at TCF Bank Stadium with tickets starting at $20. For information on purchasing tickets, visit the DNR-United page. For questions or orders of 10 tickets or more, call 763-476-2237 or email tickets@mnufc.com. The DNR and soccer team has also partnered on a season ticket offer that supports loon populations throughout the state by way of the Minnesota Loon Monitoring Program. The first 11,842 season ticket holders – one for every lake in Minnesota – have a portion of their season ticket support the DNR’s loon program, and all inaugural season ticket holder accounts will receive a complimentary Minnesota State Parks Day Pass. Discuss below - to view set the hook here.
    • bbfenatic
      Was out in DL area Saturday....still the same....prespawn staging 8-12 ft but did get some dandies late evening in front of an inlet pretty shallow 4-6ft and they were the most agressive Crappies I've caught this spring.  Mother Nature has dealt us another yo-yo spring up our way and that $uck$
    • AlwaysFishing23
        It's crazy people just have no respect what so ever for the environment or for other anglers.