Restore factory defaults on HP Smart Tank 670, 720, 750, 6000, 7000, 7300 printers

Restore factory defaults using the Smart Tank 670, 720, 750, 6000, 7000, or 7300 printer control panel.

1. On the printer control panel, press and hold the Information button for 5 seconds until all control panel buttons turn on.

2. Open ink access door.

3. Press and hold the Information and Cancel buttons for 3 seconds.

4. After about 20 seconds, close the ink access door.