new cartridge does not work

[HU0108]

HP 8620

black ink cartridge 950

[BeemerBiker]

I assume the ink cartridge and the printer are both the same region (Germany) else you must do a region change on the printer.

See if EWS can provide more information about the problem
This explains how to use the EWS
Use the HP printer Embedded Web Server (EWS)

The problem may be caused by dried ink from old cartridge in the printhead.

This link shows cleaning the 8600 printhead and removal is shown here.

This is another type of printhead cleaning, different from the above.

Cleaning and removing ink is shown below by our "Scullery" team.

An HP original video on how to clean the printheads by our experts. Yes, this can get messy, but it works. If your ink levels are good but you are printing blank pages then this is likely the solution.

Official HP advice on cleaning.

Some printers have a printhead cleaning procedure.

To clean the printhead on an HP printer, access the printer settings through the HP Smart app, navigate to "Print Quality Tools," and select "Clean Printhead"; this will initiate a cleaning cycle where the printer will automatically run a cleaning process to clear any clogs in the printhead

Inkjet and printhead cleaning kits are available

Consumer inkjet printer printheads typically last for several years, with some lasting up to 10 years or even longer. However, the lifespan can vary greatly depending on usage, maintenance, and environmental factors.