There are two methods of unblocking the print head. The first is to attach a syringe to the stalk leading to the print head. We do not recommend this as it can damage the print head beyond repair.
The best and safest way of clearing a blocked print head is to use dedicated cleaning cartridges which contain a specially formulated solution to dissolve blockages without damaging the heads. Such cartridges can be purchased from the following store... https://www.printercartridges.net/printercartridgesstore/index.php?main_page=index&cPath=222
Some printers will allow you to just replace one colour, so if there is no black ink finding its way on to the paper, insert the black cleaning cartridge into the machine and print several full size pages of the image to the left. Doing this will guarantee that a fair quantity of cleaning solution will be pushed through the print head nozzles. Finally, replace the normal black cartridge and print as normal. You may have to print a few pages before the black ink begins to appear again.
If the nozzle remains blocked after performing the above operation, then repeat the exercise, but this time leave the cleaning cartridge inside the printer overnight. This will allow the solution to eat away at the blockage.Cleaning cartridges are usually 75% successful, unfortunately however there is no guarantee that they will clear the blockage.
