When you refill a Lexmark printer’s cartridge, you also have to reset its chip so the printer recognizes that the cartridge has been refilled. Both refilling and resetting are quite easy as long as you follow the right method. The instructions vary slightly depending on the cartridge’s model, but the procedure is essentially the same. If your printer uses a tri-color cartridge, you will need to determine which hole leads to which ink tank–magenta, cyan or yellow. Usually, the top label on the cartridge, which you peeled off in Step 2, tells which hole leads to which color compartment. If you’re not sure, take a long needle or a toothpick and insert into each hole before you refill. When you take the needle out, it will be colored, so you will be able to determine which ink to fill into the hole. Tips Writer Bio