Canon imagePROGRAF iPF6200 - Mail Box Full. Cannot Save; Mail Box Full. Delete Unwanted Data

Messages regarding the hard disk
Mail box full. Delete unwanted data
Cause Corrective Action
100 jobs are stored in the Personal Box. Delete unneeded jobs stored in Personal Boxes.
( → P .565)
Mail box full. Cannot save.
Cause Corrective Action
Press the Stop button to cancel the print job.
Delete print jobs from the queue. ( → P .529)
Saved jobs exceed the Personal Box capacity .
Delete unneeded jobs stored on the hard disk.
( → P .565)
Error Message 705