The Canon website offers free downloadable brochures and user manuals for Pixma printers, which contain troubleshooting information. The site also includes a service and support page, which provides contact options for troubleshooting via email and phone.
To access the troubleshooting information on the Canon website, go to the Service & Support page. Enter the Pixma model number in the left column or click on the provided model number in the right column. From the page then displayed, click on Brochures & Manuals and follow the instructions for downloading.
To contact Canon regarding troubleshooting, click the Contact Us button on the Service & Support page. More troubleshooting options can be found under the menus labeled Technical Support and More Resources.