While the illustrations show the PIXMA TR 7820, these steps also apply to the PIXMA TS7720. If vertical lines always appear on printouts or print always shifts from the correct position, or if Error 5100 occurs during printer operation, the Encoder Film inside the printer may be smeared. ... TR 7820 ... Should another error or failure occur in the printer after cleaning the film, service is required.
This article provides part numbers for the print heads and maintenance cartridges (where applicable) for applicable PIXMA TR -Series and PIXMA TS-Series printers.
