[DSP-10] Moth balled DSP-10 has some troubles - ADDENDUM

[kd7ts]

On Thu, 11 Apr 2013 20:17:41 -0700, Don AE5K <donj at ae5k.us> wrote:

>
> Sidetone - ***NO!*** - no sidetone heard.  I tried "Scroll S" and it  
> does nothing that I can see, HOWEVER, I now get in lower left corner the  
> error message when doing the Scr S:
>    "E1 DSP Data Lst"
> followed by the line "STONE-"

Hi Don,

On the main board near the front corner of the 2181 enclosure is an 8 pin  
connector P5 that mates with J5. the wires go to the feed throughs on the  
2181 enclosure. PIN 4 and PIN 6 are the audio for transmit and sidetone.  
PIN 6 is the sidetone audio and PIN 4 is the transmit audio.

IF you have made an SSB contact it seems these must be correct, or at  
least the wire on PIN 4 must be correct. It is possible that the audio  
connector out of the DSP-10 enclosure is causing the symptom. Take a close  
look at the connector and be sure it goes in far enough to seat all the  
way. The enclosure is pretty thick metal, and it is possible the connector  
is not mating completely. This is evident on receive as having audio on  
left or right, but not both.

Sidetone only appears on one channel, receive audio, on both.

73 Mike KD7TS