190-02246-11
GI 275 Part 23 AML STC Maintenance Manual
Rev. 1
Page 4-18
Figure 4-15 GI 275 Alert Message Troubleshooting
Sheet 1 of 2
GI 275 Alert Messages
If fault persists,
contact Garmin.
Demo mode,
do not use in
flight
Unit in demo mode
Set unit to normal mode by
deselecting “Simulate Inputs”
from the main menu in
configuration mode
Backlight
calibration lost
Service
required
GDU software mismatch
One or more GI 275
LRU in the system have
different software
versions
Unit is in demo mode
Return GI 275 to Garmin
for service
Ensure all GI 275 units
are loaded with the
same software version
Maintenance
Log Message
Maintenance
Log Message
Cause
Cause
Corrective
Action
Corrective
Action
Corrective
Action
Key stuck: Key knob
is stuck
Maintenance
Log Message
System detects
stuck unit knob
Cause
The display knob has been
pushed for more than
30 seconds
Display knob is stuck in the
pushed position
Corrective
Action
Release display knob
Free display knob from the
pushed position
Main board system
fault
Maintenance
Log Message
Main Board SFD Corrupt
Main Board Boot Block Corrupt
Main Board Key Region Corrupt
Main Board Key Region Missing
Cause
Corrupt software
image
Corrective
Action
Reload GI 275
software
Main touch screen
error
Maintenance
Log Message
Main Board Touch
Screen Error
Cause
Touch screen is not
responding
Corrective
Action
Return GI 275 to
Garmin for service
