Canon IR1600 Reference Manual page 36

NOTE
"DAC" stands for "Department Access Code."
See "After Turning the Power On," on p. 1-21., for details about entering the department ID and Password.
<DAC PASSWORD> is displayed only when the Password is set.
For details about the Department ID Management, see "Setting the Department ID Management," on p. 4-5.
If the message <INSERT CONTROL CARD> appears:
INSERT CONTROL CARD
1
Insert a control card.
NOTE
For details about the control card, see "Card Reader," on p. 7-27.
1-18 Main Power and Control Panel Power