Standby Attitude Indicator Troubleshooting; Standby Airspeed Indicator Troubleshooting - Garmin G1000 System Maintenance Manual

5.22

Standby Attitude Indicator Troubleshooting

Symptom
Warning flag pops into view,
indicating that the gyro motor is
not receiving sufficient power to
operate
Unit fails to perform to
specifications
5.23

Standby Airspeed Indicator Troubleshooting

Symptom
Airspeed Indicator lighting is
inoperative or malfunctioning
Airspeed displayed is incorrect
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01
Recommended Action
•
Perform the Standby Instrument Electrical Power Checks in Section 8.1.5.
•
Remove the unit per Section 6.28 and inspect the electrical connector.
•
Check to ensure appropriate electrical power is being supplied to the
instrument.
•
If input electrical power is not adequate, troubleshoot the wiring
harness.
•
If input power is appropriate, the unit must be removed and serviced
by a qualified service facility See Section 6.28 for removal
instructions. Contact the manufacturer to find a qualified service
facility
•
The unit must be removed and serviced by a qualified service facility.
See Section 6.28 for removal instructions. Contact the manufacturer to
find a qualified service facility.
Recommended Action
•
Perform the Standby Instrument Electrical Power Checks in Section 8.1.5.
•
Remove standby airspeed indicator per Section 6.26 and inspect the
electrical connector.
•
Check that electrical power is being appropriately supplied to the
instrument.
•
If the input electrical power is not adequate, troubleshoot the wiring
harness.
•
If the input electrical power is appropriate, replace the standby
airspeed indicator or contact the manufacturer for further
troubleshooting.
•
Using a pitot-static ramp tester, check airspeed displayed on standby
altimeter against airspeed display from ADC2.
•
If the airspeeds are the same, inspect the pitot/static ports and
associated equipment for faults.
•
If the airspeeds are different, replace the standby altimeter or contact
the manufacturer for further troubleshooting. See Section 6.26 for
removal instructions.
Page 5-87
Revision 4