10. Optional step: If a replacement top cover is being installed, remove the output bin ap by exing the
center of the ap to release the right- and left-side hinge pins from the holes in the cover.
Figure 1-240 Remove the output bin ap
Step 8: Unpack the replacement assembly
1. Dispose of the defective part.
NOTE: HP recommends responsible disposal of the defective part.
http://www8.hp.com/us/en/hp-information/environment/product-recycling.html
ENWW Removal and replacement procedures 177