HP34C solderless chip orientation

[JeffM]

I recently came across a 34C that I'm trying to get working. It wouldn't turn on at all at first, but I've now got it to the point of near-fully functional.
I'm not sure if I've induced the problems I'm seeing, but when turned on it displays Pr-error, and the self test returns an error 9. I saw a post on line suggesting a chip may be in backwards (one fell out during disassembly). I oriented it the same as the other two, but maybe that's not correct. I've also found that I cannot enter a decimal point, but I can enter Pi using the same key preceded by the black h key. Obviously the key works, so maybe that's further evidence of a backwards chip. What is the proper orientation of the three small chips? I'd like to keep the openings and disassemblies to a minimum.
Thanks.