HP 2820 - Manual (Page 216)

6. Lower the green lever with the flat green part fitting in between the rollers. Press down
on the green lever until you hear a snap.
7. To check for proper installation, lift the green lever until it remains open. The pickup
roller assembly should be secured to the lever assembly and should not fall out.
8. Make sure that both sides of the assembly are secured by the green hooks.
9. Lower the green lever assembly and close the ADF lid.
Note If you are experiencing jams in the ADF, contact your local HP-authorized service provider.
See
Service and support .
10. Plug the device in, and then turn the power switch to the on position.
200 Chapter 12 Managing the device and maintenance ENWW