Garmin G1000 NAV III Line Maintenance Manual page 56

2.2.2 Common Problems
Symptom
Display is blank
Display resets
Display flickers
SD card is stuck in GDU
Engine instruments are missing
on the MFD
Cannot navigate through pages
on the MFD using the FMS knob
Page 2-28
Rev. L
Recommended Action
•
Ensure that a cell phone or a device using cell phone technology is not
turned on (even in a monitoring state) in the cabin.
•
Cycle power.
If GDU recovers, observe display for yellow text containing error
o
information at the top of the screen. If message indicates software
need to be re-loaded, then re-load software. Otherwise, replace
the GDU.
•
Use a bright light to verify LCD is active.
Adjust avionics dimmer control full clockwise.
o
Manually turn up backlight on the PFD and load configuration files
o
to the PFD and MFD.
•
Ensure slide lock is fully engaged with the locking tabs on the back of
the unit.
If slide lock is not fully engaged, remove connector and verify the
o
locking tabs on the GDU are perpendicular to the connector. If
necessary, straighten them before reseating connector.
•
Ensure GDU is receiving power. If a circuit breaker is tripped,
determine source of short before resetting breaker.
•
Ensure circuit breakers have not failed and power wire connections are
secure.
•
Switch MFD and PFD.
If problem follows unit, replace the display. Please note the
o
position it failed in (PFD or MFD).
If problem does not follow unit, troubleshoot aircraft wiring for fault.
o
•
DO NOT insert the screwdriver any length into the card slot.
•
DO NOT pry against the overlay.
•
DO NOT force the SD Card out.
•
Insert a small screwdriver in the groove on the side of the exposed end
of the card to pull out the card.
•
Push the card in further to release the card locking mechanism.
•
Check SD Card for having more than one label. Two or more labels on
the card will cause sticking.
Remove all but one label.
o
•
Ensure the SD card is from Toshiba or SanDisk. Use of other SD
Cards is not recommended.
•
If card was inserted with the label facing to the right, do not attempt to
remove. Return the unit to Garmin for repair
•
Clear user settings on each GDU by pressing and holding the CLR key
while powering up each display. Leave the other display off while
performing the clear operation.
If problem persists, replace GDU.
o
G1000 Nav III Line Maintenance Manual
190-00352-00