Question about Lowrance MARK-4 GPS/SONAR
It did display them but during adjustments they disappeared
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: When turning on the Lowrance
here is the link to your the lowrance web site. the trouble shooting guide says that if you tried to it on another boat than you might need to take it in for service. but there is a section that explains how to do a soft reset on the unit. you might try that.
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Posted on Aug 15, 2008
Hello 2* The unit asks if you want to reset all the options. Press ? to YES'ENT. All options are reset, and the unit reverts back to the Map Page at the 4000 mile zoom range. (Any recorded sonar logs or GPS
Tranducers must not connected while the system is ON. They are hi-frequency sound emitting devices, connecting it when the mother unit is LIVE, will make the transducer drive inside the device to fail. Here that has been happend I thinks. Just reset the system to its factory settings.
1* Press MENU'MENU'? to SYSTEM SETUP'ENT'? to RESET OPTIONS'ENT
data will be unchanged.)
If this process do not help you, your GPS need service. We can't get any schematic diagrams or sevice manuals of GPS devices, as security reason, they will not be published. You must have contact the Lowrance Authorised Service centere at your town to get this device repaired. OK.
2* The unit asks if you want to reset all the options. Press ? to
YES'ENT. All options are reset, and the unit reverts back to the Map
Page at the 4000 mile zoom range. (Any recorded sonar logs or GPS
Posted on Jul 09, 2011
SOURCE: My Lowrance LMS-332C GPS was
Hello 2# Make sure the power cable is wired properly. The red wire connects 4# Measure the battery voltage at the unit's power connector. It should be at least 10 volts. If it isn't, the wiring to the unit is defective, the battery terminals or wiring on the terminals are corroded, or the battery
If the GPS works and sonar section does not work at all, check the followings.
1# Check the power cable's connection at the unit. Also check the wiring
to the positive battery terminal, black to negative or ground
3# Check the fuse.
Check whether there have any wiring break, loose. During servicing the boat, there is chance to get the wiring of sonar to sonar sensor at the botom of the boat may have damaged. Check these. OK.
2# Make sure the power cable is wired properly. The red wire connects
4# Measure the battery voltage at the unit's power connector. It should
be at least 10 volts. If it isn't, the wiring to the unit is defective, the
battery terminals or wiring on the terminals are corroded, or the battery
Posted on Aug 29, 2011
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