HP LaserJet 4250 - Manual (Page 257)

8. Close the access door and press firmly until it snaps into place.
9. Set the bottom of the cover onto the printer. Make sure the bottom tab on the cover fits
into the corresponding slot in the printer. Rotate the cover up, toward the printer.
10. Slide the cover toward the front of the printer until it clicks into place.
11. Reattach any cables and the power cord, then turn the printer power on, and then test
the DIMM installation. See Checking memory installation below.
ENWW Printer memory 245