EXFO AXS-100 Series OTDR - Manual (Page 121)

Troubleshooting
OTDR 113
Solving Common Problems
You can no longer view the
OTDR application.
Shut down the unit by
pressing and holding it
down.
You will hear a first beep;
release the key after you hear
a second beep.
Press simultaneously
, Esc, and Menu and
hold them a few seconds
until you see Maintenance
Mode on the screen. It may
take a few seconds before the
maintenance menu appears.
Use the up/down arrows to
highlight Restore System
Disk, and then press Enter.
When the application
prompts you to confirm
deletion of all data, use the
up/down arrows to highlight
Yes, and then press Enter.
Your unit will restart
automatically when update is
complete.
Problem Possible Cause Solution