[R-390] Procedure for setting T401
Larry H
larry41gm at gmail.com
Tue Jul 16 16:38:52 EDT 2019
Hi Dave, I know that my 390As says T401 on the T207 can, so I assume you
meant T207. It should be adjusted for maximum 17 mh signal while
monitoring it with a scope on V202 pin 7. You should only see a nice clean
17 mh signal with it in AGC mode and no input, if there's something else in
there, that's a problem.
Regards, Larry
On Tue, Jul 16, 2019 at 10:46 AM dog <agfa at hughes.net> wrote:
> Since the voltage on E209 is so hot in my 390A (-30VCD), I've been
> looking for a procedure to set T401. I don't seem to be able to find
> anything. Any ideas? I thought maybe I'd stick a high Z probe in E209
> and look at it on the spectrum analyzer and set it for the best 17MHz
> signal. Don't know if there's any harmonics or glitches that are making
> it so high but maybe the SA would tell me something. I haven't looked at
> my other 390A, it's all apart right now, I should start putting it back
> together before I start loosing parts.
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