HP 2 - Manual (Page 92)

1. print cartridge cradle 2. print cartridge cradle walls
6. Insert the print cartridges and close the printer cover.
7. Connect the power cord to the back of the printer.
8. Press the Power button to turn on the printer.
9. Calibrate the print cartridges.
Repeat the cleaning procedure if ink streaks continue to appear on printed pages.