Battery Capacity Check; Troubleshooting; General - Garmin G5 Maintenance Manual

4.4 Battery Capacity Check

1. Without power applied to the aircraft, turn on the G5 by pressing the power button in the lower
left corner of the unit.
2. Note the remaining battery capacity (%) at the top left corner of the display.
3. After about a minute, the remaining capacity will change from (%) to time (hour:min).
4. If the remaining capacity is less than one hour (1:00), allow the battery to charge until the
capacity shows greater than 95% and repeat the check.
5. If the remaining capacity is less than one hour (1:00) after charging, the battery must be replaced.
5

TROUBLESHOOTING

5.1 General

NOTE
he term 'Red-X' refers to a red "X" that appears on different areas of the display to indicate the
T
failure of that particular function
If a Red-X appears on the display or anywhere in the configuration mode menus, the following
troubleshooting steps may be used to help identify the cause.
1. Review the airframe logbook to verify if any G5 or other avionics or electrical maintenance has
been performed recently that may have contributed to the failure.
2. Check for loose wire terminals on the circuit breaker connections on the power wire(s) causing
intermittent power connections. Also, check for intermittent circuit breakers.
3. Check that all connectors are fully seated, and that the jack screw connectors are fully tightened
on both sides of all connectors.
4. Check for a loose wire harness that is able to move around during flight. This condition may
cause the wire to pull on or vibrate the connector, making intermittent connections.
5. Ensure that the G5 is mounted securely.
6. Look for any heavy objects that may not be fastened tight to the aircraft structure that could be
inducing vibration in the G5's attitude sensors.
7. Look for evidence of water or fluid contamination in the area around the G5.
8. Unplug the connector on the G5 or any affected LRU and check for bent pins.
9. Inspect the wire harness clamp on the rear of all connectors to verify that it is not too tight and
smashing/shorting the wires.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Maintenance Manual
Page 5 of 18
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