4. Install the chip set sliding plate, then it will fix the chip set holder as the picture.5. it is easy to install cartridge into printer. Use the lock for cover in the right place as thepicture show as below.Caution:Refill the ink when the ink lower because the ink level detectionhave been cancel.How to cancel the ink level detection function1. When you install cartridge into printe and turn on the power switch, the printer screen will showthe information: Can not correctly detect the remaining ink amount, check the inkcartridge. Please press right button one time.2. the printer screen will show the information: please check: 1.check 2.information. please choose“2 information” and press “OK” button.3. the printer screen will show the information: Installed ink cartridge was exhausted. As the inkremaining amount is unknown, so the printer to stop the action. Please press right