Are you tired of your HP LaserJet counting color pages when no color is being printed?

Cartridge Out Override can only be enabled from the printer’s control panel menu.

1. From the main menu, press (Right arrow) to System setup and press (Select).
2. Press (Right arrow) to Print quality and press (Select).
3. Press (Right arrow) to Replace Supplies and press (Select).
4. Press (Right arrow) to Override out and press (Select).
5. Press (Select).

If Stop at out is selected, the printer will stop printing when a cartridge reaches the recommended
replacement point.

If Override out is selected, the printer will continue printing when a cartridge
reaches the recommended replacement point.

The factory default setting is Stop at out

To refill you need to creat a hole in the cartridge, empty the old toner, refill and seal.

You can buy the refill toner and instructions here:

https://www.zinetic.co.uk/Hewlett_Packard-list.aspx

Refill instructions can be found at:

www.uni-kit.com/pdf/tonerrefillinstructions.pdf

Page 69 has refill instructions for HP2600 (same as for HP1600)