- Jul 28, 2021
My WF-3640 printer was not printing properly due to clogged heads. Problem did not clear after several cleaning cycles and I did not choose to waste anymore ink. I cleaned the heads by injecting a cleaning solution through the ink feed ports per videos. Black works fine, but none of the 3 color heads will print anything during a nozzle check. No spots, nothing but blank sheet where CYM should be printing. Cables to the head look fine. Any suggested causes or fixes?