Advanced Guide > Printing on DVD/CDs > Troubleshooting > Message Appears on the Computer ScreenMessage Appears on the Computer ScreenErrors About DVD/CD Printing Are DisplayedMessage: 1001 Is DisplayedError Number: 1002 Is DisplayedMessage: 1850 Is DisplayedErrors About DVD/CD Printing Are DisplayedCheck 1: Is the CD-R Tray placed properly?Open the Inner Cover, properly place the CD-R Tray again, then press the OK button.Make sure that you are using the CD-R Tray supplied with the machine ("G" is on the upperside).For details on how to place the CD-R Tray, see Attaching/Removing the CD-R Tray .Check 2: Is the DVD/CD placed on the CD-R Tray?Properly place the DVD/CD on the CD-R Tray, attach the CD-R Tray again, then press the OKbutton.Make sure that you are using the CD-R Tray supplied with the machine ("G" is on the upperside).For details on how to place the CD-R Tray, see Attaching/Removing the CD-R Tray .Check 3: Unrecognizable DVD/CD may be placed.Canon recommends that you use DVD/CDs specially processed to be printed on by an inkjetprinter.Check 4: Is the DVD/CD on the CD-R Tray already printed?If you place a DVD/CD on which has already been printed on the CD-R Tray, the CD-R Traymay be ejected.In this case, change the settings of the printer driver and try printing again.Clear the Detects a printable disc in the CD-R tray check box in Custom Settings onthe Maintenance tab, then click Send.When printing is over, select the Detects a printable disc in the CD-R tray check boxand click Send.NoteIf the Detects a printable disc in the CD-R tray check box is cleared, printing may startwithout the DVD/CD loaded. Selecting the check box prevents the CD-R Tray from gettingdirty.Check 5: Is the Inner Cover opened when starting printing on paper, or whileprinting is in progress?Close the Inner Cover, then press the OK button on the machine.Do not open or close the Inner Cover while printing is in progress. This may damage themachine.Message: 1001 Is DisplayedCheck: Place the CD-R Tray properly.Page 797 of 1086 pagesMessage Appears on the Computer Screen