Oki MB492dn User Manual page 888

For details, refer to "Setting on the Document
Memo
When copying a document with the machine, a document in the ADF is given priority. Check that there is no document in the
ADF when using the document glass.
3.
Press the (START) button.
Copying starts.
Memo
You can cancel copying until a message is displayed to inform you that copying is complete by pressing the
Glass".
887
(STOP) button.