Canon Pixma MX882 isn't printing black.
My Canon Pixma MX882 recently failed with a "U052 Error". I replaced the print head with a Canon Genuine OEM QY6-0080-000 print head. After multiple times removing, reinserting the inkjet cartridges and new print head and running deep cleaning maintenance, the print still doesn't print black. A color test produces only cyan, magenta and yellow. Any other suggestions that I might try to fix this problem?