[Elecraft] Info 080 message started with RF Alignment and Test, Part II

[Don Wilhelm]

The INFO 080 message means that the MCU (Control Board U1) is not 
communicating with some other firmware IC over the AUXBUS signal line.  
The only other controller that is present at this stage of your build is 
the MCIO in the middle of the RF board.

I would suggest that it is a solder connection that is at fault. Check 
the soldering at RF Board U1 pin 28 as well as resistor R64. On the 
control board check U6 pin 40 and resistor R6.
For completeness, you should also check the Control Board to RF Board 
connectors CB P2 pin 28 and RF J7 pin 28.  Those double row connectors 
anr numbered with odd numbers down one side and even numbers down the 
other side.  Pin 2 is opposite pin 1.

73,
Don W3FPR

On 10/25/2012 12:10 AM, AC8HU wrote:
> However when I proceded to the VCO Test, the
> problems started - with the first appearance of the Info 080 message.  I've
> had no luck in fixing the problem since.  Here's what I've found/checked:
>
>