instruction for Canon PFI-101/102/103/1051. Conduct Part Check :1.1). Lock for cover x 11.2) chip set holder x 11.3). chip set sliding plate x 11.4). ink refill hole plug x 12. After refill ink, insall the plug on the ink refill hole, the the ink will not flow out from thecartridges3. Install the chip set and chip set holder into cartridge as the picture show you as below.Before intall the cartridge into the printer , please cancel the ink level detection in setupbutton.