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
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 We can't get any schematic diagrams or sevice manuals of GPS devices, as security reason, they will not be published.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.
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