Wanted: manual for Shimadzu QV-50 spectrophotometer

[TerraHertz]

I'm attempting to restore a quite nice spectrophotometer from the 1960s, but cannot find any manuals from my usual sources. All I can find online are a few advertisements, such as http://pubs.acs.org/doi/abs/10.1021/ac60268a829

It's a Shimadzu QV-50 spectrophotometer.

See pic. Although in that I have the light source, transmission cell and photocell modules removed from the side of the case. It was pretty dirty on the outside. Here it's already cleaned.
I'm not yet sure it will be possible to get this working, since there's one missing part in the detector assembly. But I still have some options for finding a spare.

Can anyone suggest sources for service/user manuals for scientific gear like this?

Man, you'd think with a beautiful and very expensive (for that time) instrument like this, whoever was in charge of it would have bothered to remove the damned D-cell batteries from the battery holder. But no...
Fortunately the battery compartment is good old bakelite, with simple contacts, very robust, and easily repaired.

And _most_ of the optics is inside an airtight compartment intended to be operated in vacuum. So they seem OK.