Kikusui 164D AC Voltmeter - schematic or service manual?...

[Rax]

Hi all,
I recently got this at the local swap/hamfest, and am attempting to do calibration (it works OK upon a cursory check).

But I can't get it to max the scale when seeing a 30mV voltage (per calibration procedure step 2). It does see full scale when seeing 10mV, 100mV in the respective scales. So, I'm not too worried yet and am still assessing this (little beaut of an instrument), but I was wondering if anyone is in possession of an actual service manual, or at least a schematic.

The Operating Manual is available from Kikusui, and I've contacted them about the SM/schematic availability today.

Thank you!
Radu.

[Rax]

Well, no, I take that back. This thing measures (this far) absolutely dead on.

I'd still be interested in schematic and SM, though.