If you replaced an ink cartridge, the LCD may ask you to verify that it was a brand new one. (For example, DidYouChangeBlck?) For the new cartridge you installed, press 1 to select Yes to automatically reset the ink dot counter. If the ink cartridge you installed is not a brand new one, be sure to press 2 to select No.
If you wait until the LCD shows Near Empty Black and Ink Empty Black, the machine will automatically reset the ink dot counter.
If the LCD shows Install or No Cartridge after you install the ink cartridge, check that the ink cartridge is installed properly.