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HP8564EC repair / calibration

Question asked by Ruedi on Jul 13, 2011
Latest reply on Sep 6, 2011 by Ruedi
Hello Folks!

I'm owner of a HP8564EC and had, after some years a YTO failure, I got a used one and replaced it - the analyzer was working again but there are always some error messages on the screen like 317, 319,354 or warn fin. Up to 2,9 GHz, the 1st range,  everything is working fine, but on the other ranges up to 24 GHz sensitivity is sometimes very poor or even no signal apperaring!?
I'm a scilled technican but fear to tune the pots without knowing which one will be the right one! I was looking to buy or download a service manual but couldn't find anything in the web at all, that's the reason to ask for some support on this forum!

Many thanks in advance
Ruedi  

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