The focus motor ran without stop .
I have seen to the electronic schema of the main card.
http://www.telescopeservice.com/pdf/LX200%20Main%20Board-Sh3.pdf
After some recherch, l see on the U14 ( Allegro USD2993) the pin 6 out-1A
is at zéro, the pin 7 out-2A est hight
When l tested again with my electronic controller, a small flash occurs on
pin 7
the motor don't turn now
pin 6 and 7 are zero now
l test :
pin 2 =1V
pin3=0V
in spite of the fact of supporting on Focus+prev or focus+next on the
keyboard
Exactly how the computer sends the logical command to the 2993 is still not
clear to me.

do you think that the 2993 is except service ?
know you to the substitute of component 2993 since allegro does not
manufacture it any more?
can it have other origins for this breakdown of the engine?

better thanks

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