Konica Minolta bizhub C451 User Manual page 715

Utility mode
Note
To finish specifying settings in the Utility mode, press the [Utility/Counter]
key. Otherwise, exit the Utility mode by touching [Close] in each screen
until the screen for the Copy, Fax/Scan or Box mode appears.
Reminder
The default administrator password is "12345678". The administrator of
this machine should change the administrator password.
Be sure to keep the administrator password in a safe place. If the
administrator password is lost, it must be specified by the service
representative. For details, contact the service representative.
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