Lowrance LMS-520C Operation Instructions
![Lowrance LMS-520C Fish Finder manual cover](/images/VSrRBldvbVGwJjXriizSxGSd/thumbs/thumb175x175.webp)
To update the software on your Lowrance LMS-520C, download the latest update from the Lowrance website onto an SD card. Insert the SD card into the unit and follow the on-screen instructions to complete the update process.
Check the power connections and ensure that the battery is fully charged. Inspect the fuse and replace it if necessary. If the problem persists, consult the user manual or contact Lowrance customer support.
Ensure that the GPS antenna is positioned with a clear view of the sky. Avoid obstructions and interference from other electronic devices. Regularly update the GPS software for optimal performance.
Ensure that the transducer is properly connected and submerged in water. Check for any damage to the transducer or its cable. Adjust the sensitivity settings on the unit and make sure it is operating in the correct mode.
Regularly inspect the transducer for any debris or algae buildup. Clean it gently with mild soap and water, using a soft cloth. Avoid abrasive materials that might scratch the surface.
Store the unit in a cool, dry place. Disconnect the power supply and remove the battery if applicable. Cover the display screen to protect it from dust and scratches.
To reset the LMS-520C to factory settings, navigate to the 'System' menu, select 'Reset Options', and choose 'Reset All Settings'. Confirm when prompted. This will erase all custom settings and restore the defaults.
Access the display settings from the main menu. Use the arrow keys to adjust the contrast and brightness levels to your preference. Ensure the settings are visible in various lighting conditions.
Intermittent signal loss can be caused by poor connections, interference from other devices, or obstacles blocking the signal. Check all cables and connections, and try to relocate the unit to a clearer area.
Go to the display settings in the menu and choose 'Customize Layout'. You can select different data fields and adjust the layout to show the information most relevant to your needs.