Backup button during power up/boot up still functions to initiate a factory recovery image, it restores
the controller to its factory ship state which is N4.1 or later. You must repeat the conversion
procedure to get it to AX-3.8U1.
•
The DEBUG port is a standard Micro-A type USB port for serial debug communications to the
controller.
NOTE: Login requires administrator level platform credentials.
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The SHT/DWN pushbutton initiates a “controlled shutdown” of the controller, ensuring that all
station data is preserved.
Perform the following steps:
1. Ensure that the controller’s power is off.
2. Press and hold down the backup and restore button as you power up the controller, and
continue holding down the button throughout the boot-up process until the button press is
detected and the following confirmation banner displays:
******************************************************* Backup/Restore button press detected. Release button now to proceed.*******************************************************
NOTE: During this step of the procedure, the Backup LED flashes at medium speed (100 mS on,
100 mS off). Also, be aware that holding the button down too long results in the following
message (which does not indicate a hardware fault). If this message appears it is best to start
the procedure over, beginning with step 1:
“WARNING - CHECK BACKUP BUTTON - POSSIBLE SHORT!”
3. Release the backup and restore button once the banner displays.
On detecting the button release, the system begins a 10-second countdown, which displays as
shown here:
Press any key to restore from USB backup.If no key pressed, factory recovery will begin in 10 secondsRecovery begins in 9 secondsRecovery begins in 8 secondsRecovery begins in....
NOTE: Pressing any key during this 10-second countdown prevents the system from entering
factory recovery mode. Instead, the system switches modes to restore from a USB backup.
When no key press is detected during the 10-second countdown, the factory recovery process
begins at the moment the countdown finishes. Upon entering recovery mode, the boot process
overwrites the controller with a default factory image. During this process the Backup LED
blinks at slow speed (one second on, then one second off).
CAUTION: Once in recovery mode (BACKUP LED is flashing in slow blink), do not interrupt this
process. Allow the recovery to complete or the controller could be left in an inoperable state.
4. When the Backup LED stops flashing, turn the controller’s power off and back on again to
reboot.
14
USB backup and restore
