Installation instructions 1. Remove the Orange nozzle cap gently. 2. Insert it into the corresponding slot and push it down firmly until it snaps into place. Compatible printers: PIXMA TR7520 PIXMA TR8520 PIXMA TS6120 PIXMA TS6220 PIXMA TS6320 PIXMA TS702 PIXMA TS8120 PIXMA TS8320 PIXMA TS9120 Note: The printer possibly prompts you're not using genuine ink cartridge. Please just ignore that message and press 'OK' or 'Continue'. The ink level may not read correctly since these are compatible ink cartridges. Once you can print with these cartridges, please don't try to upgrade your printer firmware. The manufacturer may block them with a new version firmware.