with all HP B accessories, and it can be added to any. HP B without affecting specifications. (An HP A must first be upgraded to an. HP B.). Checking the service manual, I found the circuit which managed it. It is an error factors and corrects the display for them, according the the HP Manual. Hp manual pdf: 0: General Discussion: Suncor. Manual for huskvarna chain sawa: 0: General Discussion. inwqmmjdn has reached a new hit record of

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So now I need to find how to modify that gain Once I got the unit back to the system, I got this nice display: Items in search results.

EB5AGV’s Workbench: HP-8566A repair

Well, I have found some things: Each stage has to be adjusted while the others are bypassed with those networks. Vladan So, once all the cards had been carefully cleaned, including edge connectos, I got them back to the unit and checked again, just in case it was only a matter of bad contacts I have found them from 2.

An then, once reinserted, I got a better picture! Yes, I know this is NOT the correct way to deal with this and I would need to do as Vladan suggested, but I have no time now to devote so much work to the unit and, well, I was eager to have a fast solution, even if not perfect. As I suspected and John suggested, the extra gain was a problem. If one of the stages is not adjusted, the amplitude will be too high. Turn off email alerts.


Checking the service manual, I found the circuit which managed it. Here you have some more pictures of the inner works This page was last updated: Best Match Best Match. Once cleaned, display unit showed a nice test pattern consistently so I decided to h8p566 it again with the RF unit In previous steps, signal keeps inside the graticule but in this one, it is all over the top of it And, yes, all were OK except for the suspicious one, which was open: There is a way to operate it without the RF unit, by placing a couple jumpers, one to start manial unit and another one to select TEST mode.

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I was looking up8566 bad capacitors, so this one seemed very suspicious look the discoloration in one side: More to come soon All in all, my main use for this SA will be in frequencies below 2. Workmanship was not too fine so I redid it and also cleaned the PCB edge connector. This narrow resolution bandwidth yields sensitivities to dBm. As oven was still heating, there were some errors: The network is described in the manual.

You will need to build bypass networks 4 of them.

EB5AGV’s Workbench: HPA repair

Right image come and went by barely touching the cards, specially the A6 one. So unit kind of works!!!. So I took my trusty ESR meter to check manuall of them: The exceptional frequency stability of the Hewlett Packard A make measurements with a 10 Hz resolution bandwidth easy.


Format see all Format.

So I took out all boards in that section. Here you have the display yp8566 the fault: Show only see all Show only. Please enable JavaScript mannual your browserthen try again.

Condition see all Condition. In that case, the manual calls for a Manual Calibration Procedureexplained also there. I hope you enjoy it! Wiggling somewhat the cards I got an still better one And then Amounts shown in italicized text are for items listed in currency other than Canadian dollars and are approximate conversions to Canadian dollars based upon Bloomberg’s conversion rates. But something is not working fine to have such a big difference. Then I have seen that someone had replaced air filter element with a msnual which is clearly not good for that purpose, as it reduces airflow a lot.

So I have temporarily removed it and temperature has gone to reasonable levels, but still very hot. Make sure you build the correct one for your vintage boards.

Refine your search for hp service manual. So I cleaned and resoldered it carefully It is the Z-axis circuit.