HP Photosmart Premium C309 - Manual (Page 133)

5. Remove the printhead by lifting it straight up.
6. Clean the printhead.
There are three areas of the printhead that need to be cleaned: the plastic ramps
on both sides of the ink nozzles, the edge between the nozzles and the electrical
contacts, and the electrical contacts.
1 Plastic ramps on the sides of the nozzles
2 Edge between nozzles and contacts
3 Electrical contacts
Chapter 12
130 Solve a problem
Solve a problem