Advanced Guide > About Disc Label Printing > Troubleshooting > Message Appears on the Computer ScreenD009Message Appears on the Computer ScreenErrors About Disc Label Printing Are DisplayedCheck 1: If the Inner Cover is closed when starting disc label printing.Open the Inner Cover, properly place the Disc Tray again, then use the OK button on themachine to dismiss the error.Do not open or close the Inner Cover while printing is in progress. This may damage themachine.Check 2: Is the Disc Tray placed properly?Open the Inner Cover, properly place the Disc Tray again, then use the OK button on themachine to dismiss the error.Make sure that you are using the Disc Tray supplied with the machine ("G" is on the upperside).For details on how to place the Disc Tray, see Attaching/Removing the Disc Tray .Check 3: Is the printable disc placed on the Disc Tray?Properly place the printable disc on the Disc Tray, attach the Disc Tray again, then use the OKbutton on the machine to dismiss the error.Make sure that you are using the Disc Tray supplied with the machine ("G" is on the upperside).For details on how to place the Disc Tray, see Attaching/Removing the Disc Tray .Check 4: Unrecognizable printable disc may be placed.Canon recommends that you use printable discs specially processed to be printed on by aninkjet printer.Check 5: Is the printable disc on the Disc Tray already printed?If you place a printable disc on which has already been printed on the Disc Tray, the Disc Traymay be ejected.In this case, try printing again after clearing the Detects a printable disc in the disc tray checkbox in Custom Settings on the Maintenance tab in the printer driver and clicking Send. Whenprinting is over, select the Detects a printable disc in the disc tray check box and click Send.NoteIf the Detects a printable disc in the disc tray check box is cleared, printing may startwithout the printable disc loaded. Selecting the check box prevents the Disc Tray fromgetting dirty.Page topPage 760 of 1037 pagesMessage Appears on the Computer Screen