Black prinout

[uNITEK]

All printout black, just even printing printer info only. Changed toner cartridge and transfer roller still black printout.

[davidzuts · Accepted solution]

On most hp printers that is usually an indication of high voltage issues or a poor grounding connection.  Remove the toner cartridge and check all the contact points in the toner cavity and make contact with metal posts on the toner cartridge to make sure none are bent or damaged.