K2 , Control diodes

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K2 , Control diodes

Ken Chandler
I have just got my K2/100 and installing the various elements etc. There are 2 diodes D1 & D2, page 15, D1 is situated at the left top corner. Now I take it the black end is the cathode!! but which way should it orientate on the board!! On the outline for the diodes on the board, there are 2 internal marks, one is vertical line, the other is a sort of half circle..ish.

I hope this is a good enough explanations!!

Thanks

Ken..G0ORH
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RE: K2 , Control diodes

Don Wilhelm-3
Ken,

I found a problem on a new K1 board with the silk screen markings.
Apparently the new ROHS compatible boards have solder pads that the
silkscreening ink does not stick to, so some of the parts orientation that
used to be present is now gone - and I do not believe the folks at Aptos are
aware of this condition yet (they will know tomorrow!!).

The immediate solution is to look at the Parts Placement diagrams at the
back of the manual.

73,
Don W3FPR

> -----Original Message-----
>
> I have just got my K2/100 and installing the various elements
> etc. There are 2 diodes D1 & D2, page 15, D1 is situated at the
> left top corner. Now I take it the black end is the cathode!! but
> which way should it orientate on the board!! On the outline for
> the diodes on the board, there are 2 internal marks, one is
> vertical line, the other is a sort of half circle..ish.
>
> I hope this is a good enough explanations!!
>
> Thanks
>
> Ken..G0ORH
>
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