HP Latex 3000 Printer - Manual (Page 214)

2. Open the latch. It is not usually necessary to remove the printhead.
3. Remove the latch of the printhead whose primer is to be replaced. To remove it, you have to push open
the printhead pocket wall to the right while pulling the latch up.
4. Stick the corresponding printhead color label on the latch. Be careful with the orientation.
208 Chapter 8 Hardware maintenance ENWW