>From what I read in the K3 manual pin 6 is DIGOUT0 which the manual states will be 0V when you select TRN or HF-TRN and are in low power mode. At all other times that pin is Hi-Z. So no connecting to that pin would not have broken anything in your KRC2.
Looks like the only LED in the system is micro-controller controlled so a lot of things could make that not come on. Lets start with the easy stuff is there +5V on pin 3 of U3? If you have a scope look at pins 13 and 14 of U1 and see if you have 4Mhz there. I've never used (or even seen a KRC2) so I'm kinda flying blind... Are you sure that however you're powering it has the polarity right? Sorry for asking the stupid questions but sometimes they help. I do this stuff a lot and you have no idea how many times my wife asking the question of do you have it plugged in has fixed my problems! ;) On Tue, Mar 16, 2010 at 12:24 PM, Kazunori Watanabe <[email protected]> wrote: > Hello, > > I just completed KRC2, initial test in page 15 of manual was successful. > Now completed final assembly and connect to K3 using AuxBus, turn > on 12V, LED does not turn on, K3 does not recognise KRC2. > Later I realised I should connect GND on pin 5 of K3 side, instead of > pin 6, which "KCR2" Manual Errata Rev C-2 Feb 11, 2009 instructed > me to do so. > Is there any possibility I damaged KRC2 because of this error? > After disconnect all cable and put 12V, still no LED light and no output. > > 73 de Kazu JK3GAD/M0CFW > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
