Gdc 74A; Gdc Software And Configuration Loading - Garmin CIRRUS PERSPECTIVE SR20 Line Maintenance Manual

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7.5 GDC 74A
Original GDC 74A is Reinstalled
No software or configuration loading is required if the original GDC 74A is reinstalled. This does
not include units that were returned for repair since their software and configuration files were
deleted during the repair testing process.
New, Repaired, or Exchanged GDC 74A is Installed
Load software from the Cirrus Perspective™ software loader card if a new, repaired, or
exchanged GDC 74A is installed.
New GDC 74A Configuration Module is Installed
The GDC configuration files must be loaded if the GDC 74A configuration module has been
replaced.
Pitot/static covers must be removed in order to successfully execute the GDC
74A software and/or configuration loading.
7.5.1 GDC Software and Configuration Loading
1. Insert the Cirrus Perspective™ software loader card into top slot of the PFD.
2. Apply system power, insuring both MFD and PFD are in Configuration Mode.
3. On the PFD, press the NO softkey at "DO YOU WANT TO UPDATE SYSTEM FILES?"
prompt.
4. After the SYSTEM STATUS page appears on the PFD, use the small FMS knob to turn to
the SYSTEM UPLOAD page.
5. Activate the cursor, turn the small FMS knob to show the list of airframe choices,
highlight "AHRS ADC Options" in the pop‐up box and press the ENT key.
6. In the FILE box, turn the small FMS knob to show the list of file choices, highlight the
AHRS/ADC configuration file that matches the number of units in the system in the pop‐
up box and press the ENT key.
7. Press the CLR ALL softkey.
8. Using the FMS knob and ENT key select GDC (1 or 2) – software and configuration files.
Pressing the ENT key will check and uncheck the highlighted software and
configuration boxes.
9. Once the desired files are selected press the LOAD softkey.
10. When the upload is complete, press the ENT key to select OK in the Upload Complete
window.
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NOTE
Cirrus Perspective™ Line Maintenance Manual
190-00920-00