What I would think is the case here (had that on a 4920 ac standard, similar/same CPU board) is that the SRAM has failed. Replacing it means a new calibration though. So you may wish to carefully check before. Are you in Germany? Can also drop me a PM.
> Gesendet: Dienstag, 12. April 2016 um 09:20 Uhr > Von: "Bert K" <[email protected]> > An: [email protected] > Betreff: [volt-nuts] Datron 1281 NVRAM woes > > Hello, > > all of a sudden my beloved Datron 1281 stopped working. > If briefly displays the familiar > "DCV: Auto 100mV......" > but then > "Secondary NV C/SUM ERROR 2101" > and then > "9005.7 No Rtx 001B42" > > The voltages from the DC board PS seem okay, also the > battery displays only a bit less than 3.7Vol. > > Obviously I wonder whether anything can be done here. > In particular I wonder about the NVRAM setup, > namely whether "Secondary" could be just a safety copy > of the "Primary". Or whether this is the less important > set of self-cal constants, etc. > I couldn't find any info in the various manuals. > > > Also the second error seems to have to do with > serial comm, and it is not evident that is has anything > to do with with the first error. If not, then they could have > a common underlying reason, like a faulty PS. > > The PS of the digital board is different than as the one > described in the manual, so I can't really check the voltages > meaningfully. Does anybode have schematics of this > second (I hear common) type of digital board? > Or knows otherwise what the voltages on the various > test points are supposed to be? > > Thanks, > Bert > > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
