Agilent 34401a newer version (round button) schematics needed

[openloop]

Main board revision 003. Part: 34401-66511

Problem: they've replaced that famous dual JFET U104 in DC input amplifier with OPA130UA op amp (in my case it's blown somewhat). Widely available service manual does not reflect this alteration.

Web search was only partially successful: I've found this page (at very bottom):  http://bbs.38hot.net/thread-17402-1-1.html
It's hard to read and it looks like it's a product of reverse engineering...

So, does anybody have a fresher version of the schematics?

[Vicus]

I'm not shure about the question but I found:
http://literature.cdn.keysight.com/litweb/pdf/34401-90013.pdf?id=765594
U104 is a dual jfet and the datasheet seems to be this one:
http://www.vishay.com/docs/70247/70247.pdf

[openloop]

Maybe I wasn't clear.
To put it another way: there are no dual JFETs on that version of mainboard. Agilent/Keysight redesigned that part of the device, but didn't bother to update the service manual with new schematics.