"n cook" wrote in message
...
What control signal to the main CD micro would disable spinner drive.
Taking the I/P H(ish) of the releavant 1/4 of the BA6398 quad motor driver
gets the motor spinning.
Taking the I/P L(ish) of the isolated inv buffer on the BA6398 also fires
it
up.
The signal line to this buffer from pin 25 of the CXD2503 main micro is
not
going negative of mid V neutral.
Focus/tracker coils hunt and sled motor moves on power up but no spinner.
Both limit switches function


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


Sam is right. Typically it will make 3 attempts for focus lock. If no lock,
no spinning. I used to use the little Radio Shack remote control tester
cards to see if there is any light coming out of the laser. But usually if
it tries three times and quits you can replace the optics assembly. Scott