AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual page 310

Backing Up with a Memory Card
!
CAUTION:
The memory card may be write-protected to avoid the accidental
erasure of the backup files. Make certain this is not the case before
you change the write-protect tab.
Card Failure
If the card is damaged, repeat the backup with a different card. If a
backup is in progress and fails, the system makes two additional attempts
at the backup. At the start of each attempt, a message appears with the
percentage of the backup that is completed. If the backup fails after three
attempts, the screen shown above appears. Repeat the backup procedure
using a different file and/or memory card.
Restore
Use this procedure to restore system conditions that were backed up onto
a translation memory card. The information in a backup file on the
translation card is copied to the system.
The restore procedure is necessary under the following conditions:
System RAM is corrupt.
A previously stored set of system conditions is preferred over the
current set.
The processor module is replaced.
After a System Erase (frigid start) has been performed.
The system software has been reinstalled.
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Maintenance and Troubleshooting