NCR 7458 - Manual (Page 76)

3-52 Chapter 3: Hardware Service
Clearing the Password
The password can be cleared as follows.
1. Turn the power off and disconnect power from the Terminal.
2. Slide the Electronics Tray out of the terminal cabinet.
3. Locate the Battery (see the board illustrations earlier in this section).
4. Use a small screwdriver and pry the Battery out of the socket.
19664
Pry Out Battery
Positive Side of Battery
5. Wait for about three minutes to clear the CMOS.
6. Replace the battery.
7. Replace the Cover.
8. Run Setup and set defaults. Set the Date/Time and make any
desired special settings.
9. Reassemble the Terminal and turn the power on.
10. Reset the CMOS memory and the password.