HP DeskJet 842C - how does one get the case open?

Archived from groups: comp.periphs.printers (More info?)

Short of using a precision tool such as a 10-pound hammer to open the case,
where are the majik clips that keep this Deskjet 842C case held together?

There are two Torx screws, one on each side of the flip-up lid, and that's
all I've found. It seems like the end pieces should pull upwards, but this
thing seems to be clipped together better than a Chinese puzzle box.

(Yes, I am aware that these finely crafted quality printers are considered
disposable commodities and are hardly worth the wear and tear it takes to do
any kind of maintenance short of loading ink and paper, but I am determined
to see if I can revive this doorstop.)

Anybody here able to provide guidance on opening this puppy up?