Why Garmin 400W Series GPS unit does not compute a position?
If your 400W Series unit isn't computing a position, there could be a few reasons: * Not receiving signals: Check the GPS antenna connections and ensure the aircraft is clear of obstructions like hangars, buildings, and trees. * Unit cycling: Wait 20 minutes for the unit to complete its cycle.
Why Garmin sidetone level is too low or too high?
If the sidetone level is too low or too high, it could be due to the wrong type of headsets, or the level simply needs adjustment. If necessary, adjust the sidetone level on the COM Setup page.
What to do if Garmin GPS signal levels drop when avionics are turned on?
If the GPS signal levels drop when you turn on your avionics, it's likely due to noise interference from other avionics. To resolve this, turn off all avionics and then turn them on one at a time to identify the source of the interference. Also, try routing the GPS cable and positioning the GPS antenna away from potential interference sources.
Why was my Garmin data transfer cancelled because the data was invalid?
An attempt to transfer a single user waypoint during a unit-to-unit crossfill was cancelled because no waypoint was specified on the Crossfill Page. Select a user waypoint and re-attempt the transfer.
What does Garmin configuration error - Config service req’d mean?
If you see a “Configuration error - Config service req’d” message, it indicates that the configuration information has been lost or corrupted. Reconfigure the unit.
What does basemap database integrity error mean for Garmin GPS?
This error indicates that the 400W Series unit has detected a failure in the built-in basemap (land data) database. To resolve this, reload the basemap database.
Why won’t my Garmin 400W,GNC 420W GPS OBS resolver calibrate?
If the OBS resolver won’t calibrate, it could be due to an incompatible resolver or an improper connection. Check the resolver specifications and wiring.
What to do if my Garmin 400W,GNC 420W GPS 400W Series unit does not compute a position?
If your Garmin GPS 400W Series unit isn't computing a position, it could be due to not receiving signals. Check the GPS antenna connections and ensure the aircraft is clear of obstructions like hangars, buildings, or trees. Alternatively, the unit may need to complete its cycle, so wait 20 minutes.
What to do if Garmin 400W,GNC 420W OBS Resolver won’t calibrate?
If your Garmin GPS OBS Resolver won't calibrate, the cause may be an incompatible resolver or improper connection. Check the resolver specifications and wiring.
Why Garmin 400W,GNC 420W GPS 400W Series unit does not power on?
If your Garmin 400W Series unit isn't powering on, the issue might be that the unit isn't getting power to the main connector P4001. Ensure power is connected to the main 78-pin connector P4001, pins 19 and 20, and ground to P4001, pins 77 and 78. Also, check the circuit breakers and main avionics switch.
General| Display | 5.0" diagonal, 256 colors TFT |
|---|---|
| Resolution | 320 x 234 pixels |
| WAAS | Yes |
| Operating Temperature | -20°C to +55°C |
| Update Rate | 1 Hz |
| Database | Jeppesen |
| COM Frequency Range | 118.000 to 136.975 MHz |
| COM Channel Spacing | 25 kHz |
| NAV Frequency Range | 108.00 - 117.95 MHz |
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