Time-nuts, My SR620 has started reporting "test error 34" on power-up and will do nothing after that. Does anyone know what that message means? I have a reasonable lab and I would try to repair the unit myself but I have no documentation. Is service documentation available or should I just ship it back to Stanford Research to get fixed? Rick W2GPS

Rick, On 12/22/2016 05:53 PM, W2GPS wrote: > Time-nuts, > > My SR620 has started reporting "test error 34" on power-up and will do > nothing after that. Does anyone know what that message means? I have a > reasonable lab and I would try to repair the unit myself but I have no > documentation. Is service documentation available or should I just ship it > back to Stanford Research to get fixed? The manual, which you can download for free from SRS, says (page 57): "If the UHF prescaler of channel A is selected when the unit is powered off and then on again, the unit will display “TEST ERROR 34”. This error may be corrected by deselecting the UHF of channel A. To run this procedure, press input button of channel “A” until UHF is not highlighted. Then turn the power off and on again." So RTFM and execute accordingly might be all that you need to do. Best Regards, Magnus

Here you can find all about the SR620: <http://www.ko4bb.com/getsimple/index.php?id=manuals> search for SR620. On Thu, Dec 22, 2016 at 5:53 PM, W2GPS <w2gps@cnssys.com> wrote: > Time-nuts, > > > > My SR620 has started reporting "test error 34" on power-up and will do > nothing after that. Does anyone know what that message means? I have a > reasonable lab and I would try to repair the unit myself but I have no > documentation. Is service documentation available or should I just ship it > back to Stanford Research to get fixed? > > > > Rick > > W2GPS > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

Hi There are a number of SRS 620’s with big block letter warning sheets taped to the top of them about error 34. It is a *very* common thing to run into and (obviously) something the guys in the repair shop get tired of really fast. Bob > On Dec 22, 2016, at 1:27 PM, Magnus Danielson <magnus@rubidium.dyndns.org> wrote: > > Rick, > > On 12/22/2016 05:53 PM, W2GPS wrote: >> Time-nuts, >> >> My SR620 has started reporting "test error 34" on power-up and will do >> nothing after that. Does anyone know what that message means? I have a >> reasonable lab and I would try to repair the unit myself but I have no >> documentation. Is service documentation available or should I just ship it >> back to Stanford Research to get fixed? > > The manual, which you can download for free from SRS, says (page 57): > > "If the UHF prescaler of channel A is selected when > the unit is powered off and then on again, the unit > will display “TEST ERROR 34”. This error may be > corrected by deselecting the UHF of channel A. To > run this procedure, press input button of channel > “A” until UHF is not highlighted. Then turn the > power off and on again." > > So RTFM and execute accordingly might be all that you need to do. > > Best Regards, > Magnus > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.