[Elecraft] KRX3 Install Problem: Extra Standoff, Front Panel Board

Ron D'Eau Claire ron at cobi.biz
Sat Jan 3 12:25:55 EST 2009


You're looking at the wrong place, Jeff. 

Check Fig 9 in your KRX3 manual where it shows the screws to remove to take
the main DSP board off of the front panel board. Arrows point to the three
screws that thread into the standoffs on the front panel board.  

Look to the LEFT of the lower left screw in that figure, and you'll see an
empty hole in the aux DSP board near the VFO B encoder. That empty hole is
where the nylon standoff goes on the aux DSP board, very close to the VFO B
encoder.

The nylon standoff will rest against the front panel board just to the
*left* of the electrolytic caps on the left edge of the picture you posted.

There's actually a hole in the front panel board where the nylon standoff
rests, but it's not screwed onto the front panel board. It's only function
is to keep the main DSP board from being pushed forward toward the front
panel board when the connectors mate. 

Ron AC7AC 

-----Original Message-----

I am in the middle of installing the KRX3 in my 
K3/100 (s/n 1152), and have bumped into a "stopper".

I am at the point of re-mounting the main DSP board 
to the front panel board. I find that there is a 
metal standoff mounted on the front panel board near 
J31 which is in the place that the newly-mounted 
nylon standoff (same length) is mounted on the 
Main DSP board. This standoff is attached to the 
Main DSP board in the KRX3 instructions at the 
top of page 17.

Has anyone else run into this? 

Can I remove the nylon standoff from the Main DSP 
board and leave the metal standoff on the Front 
Panel board in it's place? It looks like there are
some components on the Main DSP board near where
the top of the metal standoff will rest.

I **really** don't want to remove the front panel 
board from the front panel assembly to remove the 
metal standoff, especially without explicit 
instructions. I'm sure that there are a screw and 
lock washer behind the between the board and the 
front panel, so unscrewing the standoff is a 
crapshoot of whether the parts behind will come 
out with some shaking.

I've placed a photo of the metal standoff on the
Front Panel board online at:

 http://www.k8nd.com/FrontPanelStandoff_3489.jpg


73,

Jeff  K8ND
 



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