KNB2 "not installed"

[Allan Bacon-2]

I just finished wiring and installing a KNB2 in my K2.  When I turn the rig
on, I get the "Elecraft" display, then it goes to the normal frequency
display.  When I press the NB button, I get the same "not inst"
message that I got before I installed this module.
 
Following the troubleshooting hints in the manual, the board is plugged in
correctly, U3 is oriented correctly. I checked all the P1 pins.
 
 
Does anyone have any ideas?

 

 

Allan Bacon

KI4HRN

 

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Don Wilhelm-3]

The 'not inst' message means only one thing - that the AUXBUS signaling is
not happening.
In the case of the KNB2, only P1 pin 7, C9, R6, and U3 pins 3 and 4 are part
of that circuit.  Check each for proper values and good soldering.  You may
want to recheck the soldering at the RF Board header pin too.

Next, check for 6 volts at U3 pin 1 and the resistance from U3 pin 8 to
ground, it should be zero because that pin is grounded - if you find
anything higher than zero check your soldering.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Allan Bacon
> Sent: Sunday, November 27, 2005 6:34 PM
> To: [hidden email]
> Subject: [Elecraft] KNB2 "not installed"
>
>
> I just finished wiring and installing a KNB2 in my K2.  When I
> turn the rig
> on, I get the "Elecraft" display, then it goes to the normal frequency
> display.  When I press the NB button, I get the same "not inst"
> message that I got before I installed this module.
>
> Following the troubleshooting hints in the manual, the board is plugged in
> correctly, U3 is oriented correctly. I checked all the P1 pins.
>
>
> Does anyone have any ideas?
>
>
>
>
>
> Allan Bacon
>
> KI4HRN
>
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> 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
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.362 / Virus Database: 267.13.8/183 - Release Date: 11/25/2005
>
>

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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