38TroubleshootingPrintedoutput isfaded orunclearImproper paperweight usedEnsure that the paper weight is no less that 17 lb. and no more than28 lb.Paper thicknesslever incorrectlysetSet the paper thickness lever to the right to widen the gap betweenthe printhead and the paper.Media not loadedprint-side upCheck that your media is placed in the printer facing in the correctdirection. See “Loading Plain Paper and Other Canon Media” on page 4.Printheadnozzles cloggedor damagedVerify that the printhead is working properly. See “Printing a NozzleCheck Pattern” on page 20 and “Cleaning the Printhead” on page 22.Ink tanks are notseated properlyCheck the ink tanks, and reseat them if necessary. See “Replacing InkTanks” on page 20.Printhead needsto be alignedPerform printhead alignment. See “Aligning the Printhead” onpage 23.MeaninglesscharactersprintedCorrupted printinstructions arestored in theprinter buffer1. Turn the printer off to clear the printer buffer.2. Press the RESUME/CANCELRESUME/CANCELRESUME/CANCELRESUME/CANCEL button on the printer. See “Canceling aPrint Job” on page 7.3. Turn the printer on again.Printer/computernot securelyconnectedCheck the cable connections between the printer and the computer toverify that they are securely connected.Previous print jobpaused before itwas finishedIf a previous print job was paused before it was printed, turn theprinter off, then back on again, orWindowsWindowsWindowsWindows1. Click StartStartStartStart, SettingsSettingsSettingsSettings, PrintersPrintersPrintersPrinters.For Windows XP, click StartStartStartStart, then Control PanelControl PanelControl PanelControl Panel, thenPrinters and Other HardwarePrinters and Other HardwarePrinters and Other HardwarePrinters and Other Hardware, then Printers and FaxesPrinters and FaxesPrinters and FaxesPrinters and Faxes.2. Double-click Canon S750Canon S750Canon S750Canon S750 and cancel any unfinished printjobs.Mac OSMac OSMac OSMac OSOn your keyboard, press the Command key ( ) and theperiod key (....) at the same time. The print job will be canceledand the paper ejected.Incorrect printerdriver selectedCheck that the S750 is the selected default printer. See “Selecting theS750 Printer for Use” on page 2.Bad (corrupted)fileCreate the document again and print it. If it prints successfully, theoriginal file was corrupted.ProblemProblemProblemProblem Possible CausePossible CausePossible CausePossible Cause Try ThisTry ThisTry ThisTry This