Konica Minolta bizhub 751 - Manual (Page 29)

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Administrator Operations 2
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Make sure that a message appears prompting you to turn OFF and then ON the main power switch.
Now, turn OFF and then turn ON the main power switch.
If the Enhanced Security Mode is properly set to [ON], the following icon appears at the center of the
User Authentication screen, indicating that the machine is in the Enhanced Security Mode.Icon doesn't
appear when debug function with serial port is ON at Service mode. If Icon is not displayed, contact to
a service counter.