On page 37 of the manual:
Resetting the Scanner
Caution: This procedure clears all the information
you have stored in the scanner. Before you reset
the scanner, try turning it off and on to see if it
begins working properly. Reset the scanner only
when you are sure it is not working properly.
1. Turn off the scanner. If you cannot turn off the
scanner, remove the battery and install again.
2. While holding down 2, 9 and SCAN, turn on
the scanner. Initializing…Please wait appears as
the scanner clears its memory.
Note: Do not turn off the scanner again until
Initializing…Please wait disappears. Otherwise,
the scanner might not clear its memory properly.
