64 Troubleshooting Colors Are Uneven or StreakedPrinter Does Not StartCause ActionPrint Head nozzles are clogged. See “When Printing Becomes Faint or Colors Are Incorrect” on page 24 andperform any necessary maintenance operations.Print Head is misaligned. If you did not align the Print Head after installation, straight lines may be printedmisaligned. Make sure to align the Print Head after you install it.See “Automatic Print Head Alignment” on page 33 and perform Automatic PrintHead Alignment. If this does not solve the problem, see “Manual Print HeadAlignment” on page 36 and perform Manual Print Head Alignment.Cause ActionInk tank is empty. Open the Print Head Cover of the printer to confirm how the ink lamps light orflash, and then take the appropriate action depending on the error condition. Fordetails, see “Getting the Ink Status Information” on page 43.Ink tank is not installed securely. Open the Print Head Cover, then press the mark and the Canon logo on theink tank until it clicks into place.Unnecessary print jobs are left inqueue. / Computer problems.Restarting your computer may solve the problem.If there are any unnecessary print jobs, follow the procedure below to deletethem.(1)Open the printer properties dialog box.Refer to “Opening the Printer Properties Dialog Box Directly from ControlPanel” in “Opening the Printer Properties Dialog Box (Windows)” of theUser’s Guide on-screen manual.(2)Click the Maintenance tab and then View Printer Status.The printer status monitor is displayed.(3)Click Display Print Queue.(4)Select Cancel All Documents on the Printer menu.You may not be able to select this depending on the privileges of theaccount.(5)When the confirmation message is displayed, click Yes.The print jobs are deleted.(1)Click the printer icon in the Dock to display the list of print jobs in progress.(2)Select the print job to delete and click .The print jobs are deleted.The printer is not ready. Check if the Power lamp is lit green.If the Power lamp is off, turn the printer on.While the Power lamp is flashing green, the printer is initializing. Wait until thePower lamp stops flashing and remains lit green.NoteWhen printing large data such as a photo or graphics, it may take longer to startprinting. While the Power lamp is flashing green, the computer is processingdata and sending them to the printer. Wait until printing starts.