[Elecraft] KIO2 not working

[james at kurtadler.com]

Alright, I followed the steps for "No (-) supply at U1-8" and this is 
what I got:

The oscillator was oscillating at 16.292 mhz

I took the voltage readings of U1. 
Pin 1 = 12.32
Pin 2 = 0
Pin 3 = 11.80
Pin 4 = 0
Pin 5 = -9.85
Pin 6 = 0
Pin 7 = 11.79
Pin 8 = -9.85
Pin 9 = 0
Pin 10 = 0
Pin 11 = 0 (This is supposed to have 5?)
Pin 12 = 5.06
Pin 13 = 4.8
Pin 14 = 0
Pin 15 = 4.81
Pin 16 = 4.81

The serial port is enabled in the menu. 


----- Original Message -----
From: Jack Brindle <jackbrindle at earthlink.net>
Date: Wednesday, August 17, 2005 0:42 am
Subject: Re: [Elecraft] KIO2 not working

> James;
> 
> Sounds like the -12V generator is not working. Check pin 8 of U1 
> (the  
> Max1406) - it should have about -8 Volts on it. If not, follow the 
> 
> directions on page 22 of the manual under "No (-) supply voltage 
> at  
> U1-8." Yopu are right, the voltage on pin 2 of the back panel  
> connector tells me what is going on, but now you need to find out 
> why  
> - it could be (most likely) the oscillator is not functioning.
> 
> By the way, don't forget to turn on the serial port in the menu. 
> That  
> is probably the single biggest "oops" people make in assembling 
> the  
> KIO2.
> 
> Good luck!
> 
> 
> On Aug 16, 2005, at 9:03 PM, james at kurtadler.com wrote:
> 
> > I'm in the process of installing my KIO2. It does not work. I 
> checked> and re-checked all the wiring, location of the 
> components, etc and
> > everything looks good.
> >
> > My K2 has the Rev A control board so I had to cut the trace and 
> solder> some wires (that's the one thing I haven't double-checked 
> yet). I took
> > some voltage readings at the data connector on the back of the 
> radio,> here's what I got:
> >
> > Pin 1 - 0 volts
> > Pin 2 - 0 volts
> > Pin 3 - 0 volts
> > Pin 4 - 5.59 volts
> > Pin 5 - 0 volts
> > Pin 6 - 5.70 volts
> > Pin 7 - .01 volts
> > Pin 8 - 14.17 volts
> > Pin 9 - 8.07 volts
> >
> > One of the biggest discrepancies I noticed was Pin 2. According 
> to the
> > manual, it's supposed to be -8 volts, but I get 0. Any 
> suggestions as
> > to where to start looking would be greatly appreciated as I am 
> running> out of ideas. Thanks!
> >
> > James Kern KB2FCV
> >
> > _______________________________________________
> > Elecraft mailing list
> > Post to: Elecraft at mailman.qth.net
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft
> >
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> >
> 
> - Jack Brindle, W6FB
> -------------------------------------------------------------------
> ----- 
> ---------------------
> 
> 
>