Hi Serg:
Sorry for the delay in my response. I would like to thank you for contributing these documents and useful information!
I have downloaded them for safekeeping. After getting it, I found what I believe to be a frequency compensation capacitor (33pF Silver Mica) had opened up on the RF Path to input B (low frequency input). I replaced it with a 1KV NPO disc and it works wonderfully. Nonetheless, I love having copies of documentation for my instruments.
I really like the Advantest products. I have a R3267 with TG, and I think they really do make a quality instrument.
Rich