Advanced Guide > Troubleshooting > Printing Does Not StartU321Printing Does Not StartCheck 1: Make sure that the power plug is securely plugged in, thenturn the machine on.While the POWER lamp is flashing green, the machine is initializing. Wait until the POWER lampstops flashing and remains lit green.NoteWhen printing large data such as a photo or graphics, it may take longer to start printing. Whilethe POWER lamp is flashing green, the computer is processing data and sending it to themachine. Wait until printing starts.Check 2: Make sure that the machine is connected to your computerproperly.When the machine is connected to your computer with a USB cable, make sure that the USB cableis securely plugged in to the machine and the computer, then check the followings:If you are using a relay device such as a USB hub, disconnect it, connect the machine directly tothe computer, and try printing again. If printing starts normally, there is a problem with the relaydevice. Consult the reseller of the relay device for details.There could also be a problem with the USB cable. Replace the USB cable and try printingagain.When you use the machine over LAN, make sure that the machine is set up to be used over networkcorrectly. For details, refer to your setup manual.Check 3: Restart your computer if you are printing from the computer.If there are any unnecessary print jobs, delete them.Deleting the Undesired Print JobCheck 4: Make sure that your machine's name is selected in the Printdialog box.The machine will not print properly if you are using a printer driver for a different printer.Make sure that your machine's name is selected in the Print dialog box.NoteTo make the machine the one selected by default, select Set as Default Printer.Check 5: Configure the printer port appropriately.Make sure that the printer port is configured appropriately.1. Log on as a user account with administrator privilege.2. Select Devices and Printers from the Start menu.In Windows Vista, select the Start menu > Control Panel > Hardware and Sound > Printers.In Windows XP, select the Start menu > Control Panel > Printers and Other Hardware > Printersand Faxes.3. Right-click the Canon XXX Printer icon (where "XXX" is your machine's name),Page 640 of 759 pagesPrinting Does Not Start