> Finally had a chance to work on some of my kits.
I had completed the DSP kit and just now am installing
it.
No smoke
That's good!
but the red LED remains on.
That's not so good.
>...
> Any suggestions?
The LED comes on when the DSPx resets, and goes off when it handshakes
with U1 on the KDSP2 board.
Do you have any audio? If so, this indicates the DSPx is initializing
and the problem might be associated with the LED circuity or U1.
Can you get a display by pressing AFIL? SF2 or CF2 depending in mode,
for example. If so, this indicates that U1 is probably working and there
may be a PCB problem or a DSPx problem. If not, U1 may be the culprit.
If you can safely probe J1 20 (on the DSPx while plugged into the K2 and
switched on) you should see that pin 20 (DSPx reset) is pulsed to ground
at turn-on, then rises to something over 3V. If it stays low, the DSPx
is always being held in reset. If it never goes low, the DSPx is not
getting reset.
73,
Lyle KK7P
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