AR-NB2 (serv.man14). Network printing guide, for AR-NB2 - Sharp Copying Equipment User Guide / Operation Manual. Page 38

Passwords can be set to restrict Web page access and protect settings. Note that it is not necessary to set passwords; the network 
scanner function can also be used without passwords.
A password can be set for the administrator and passwords can be set for each user. If you use a user password to access the Web 
page, you will be able to establish, edit, and delete destinations in the Scanner Destination Management menu; however, you will 
not be able to establish settings in the Setup menu.

In the factory default setting, both password functions are disabled. To set a User and/or Admin password, the administrator needs 
to follow the steps below:

The Password Setup screen will appear.

For more information, click [Help] 
in the menu frame.

Once the passwords have been established, you will be prompted for user name and password every time you open the Web page 
of this system. The user names will always be "user" for user level and "admin" for administrator level.

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If you enable the password protection without entering User or Administrator passwords, the passwords which were previously 
entered will be automatically set. The factory default passwords are "Sharp" for both Admin and User.

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If passwords have already been established, enter the Admin password in the [Admin Password] field. When setting the 
passwords for the first time, enter "Sharp" in this field.