HP QMS 1660E - Manual (Page 85)

Passwords
4-53 Printer Configuration
Passwords
Use the Installation menu to password-protect the Operator Control
and Administration menus. The Installation menu appears when an
optional security card is installed in your printer. See chapter 6,
“Printer Options,” for more information on using a security card.
Selecting Passwords
Menus Installation/Admin Password
Choices Up to 16 alphanumeric characters
Default Blank (no password)
Notes Enable the password in the Installation/Use Admin Pwd menu.
Menus Installation/Operator Passwrd
Choices Up to 16 alphanumeric characters
Default Blank (no password)
Notes Enable the password in the Installation/Use Operator Pwd
menu.