Our HP 6978 does not print black. it is a newly installed cartridge it copies all colors but black. If it does show some black it is barely visible
venmartin Changed status to publish August 13, 2018
Errorsdoc » Questions » HP 6978 does not print black. t copies all colors but black
Our HP 6978 does not print black. it is a newly installed cartridge it copies all colors but black. If it does show some black it is barely visible
