Gnss (Gps) Troubleshooting - Raymarine RAY53 Installation & Operation Instructions

10.4 GNSS (GPS) troubleshooting

Problems with the GNSS (GPS) and their possible causes and solutions are described below.
Before troubleshooting GNSS (GPS) problems, ensure
your product has the latest software, by checking the
Software Updates page on the Raymarine website
www.raymarine.com.
No fix
Possible causes
No GNSS (GPS) receiver connected.
No antenna connected to GNSS (GPS) receiver.
GNSS (GPS) Antenna location.
GNSS (GPS) switched off.
Geographic location or prevailing conditions preventing
satellite fix.
No position data
Possible causes
Internal receiver is switched off.
Wrong Network output selected.
Poor / damaged / insecure cable / connection.
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Possible solutions
In order to obtain a position fix your product requires a GNSS (GPS) receiver. Your product may include an
internal GNSS (GPS) receiver, if not then an external GNSS (GPS) receiver such as the RS150 is required.
Depending on variant, your product may include an internal GNSS (GPS) receiver. The receiver may or may not
include an internal antenna. If your product's internal GNSS (GPS) receiver does not include an internal antenna
then you will need to connect an external passive antenna to the GNSS (GPS) / GA150 connection.
For optimum performance, external GNSS (GPS) antennas and GNSS (GPS) receivers that include an internal
antenna should be mounted above decks and have a clear, unobstructed view of the sky, and not be in close
proximity to any structural bulkheads or other electrical equipment or cables which may cause interference.
Ensure your internal GNSS (GPS) receiver is switched on in the relevant settings menu.
Check periodically to see if a fix is obtained in better conditions or another geographic location.
Possible solutions
Ensure your external or internal receiver is switched on.
Ensure the correct network type and speed is selected in the Network output menu: Menu > Set-up >
Network output.
1. Check that the connectors are fully inserted into the unit and locked in position.
2. Check the cables and connectors for signs of damage or corrosion, replace if necessary.
3. Check the vessel's battery voltage, the condition of the battery terminals and power supply cables, ensuring
connections are secure, clean and free from corrosion, replace if necessary.
4. With the product under load, using a multi-meter, check for high voltage drop across all connectors/fuses
etc, replace if necessary.
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