Re: WEIRD CD player problem (stupid response to stupid ...)


<bill@xxxxxxxxx> wrote in message
news:f05bp213b7mq50fph1ieq6ujm9k3ft6or6@xxxxxxxxxx
I have a Sony CDP-302 player
this is an old, ~1986, high end player.
It playes very well --- as long as it is tipped to and angle of 45° or
greater on either side. Not 40°, but 45°, maybe 43°. I measured it.
If I tip it from 40° to 45° it will start working. No bumping or
jarring required.

If it is flat or tipped to any angle front to back, the spindle motor
won't operate. The spindle motor circuit doesn't get any drive signal.
I traced it back to the electronics board and something is shutting
down the generation of the signal. The problem is on the CD carriage,
because I loosened the electronics board and tipped them seperately.

The spindle motor is an open DC type. Coils are on the PC board with
the magnet attached to the bottom of the spindle. NOTHING appears to
be loose or jammed. All micro switches seem to be operating in all
positions. It worked intermittently in the flat position for a while.

It is suppose to spin the CD on insertion or power on and read the
TOC, then stop and wait for the play button. It does this only when
tipped at the proper angle.

I don't have a schematic, but what would be position sensitive to shut
down the drive signal?

thanks

You have a CD player that was designed for use in the northern hemisphere
and using it in the southern hemisphre (or vice versa). The simple fix is
to move tothe appropriate hemisphere. Missing this, use your GPS (as this
is a GPS newsgroup) to orient your azimuthal vector to 90 degrees to the
normal plane, and then rebuild your house on that plane. then you need some
big honking magnets, see here: http://www.physorg.com/news76780984.html to
reorient the magnetic plane./ Turn around two times (or is it three??) and
click yer heels, and VOILA! your in kansas, where disbelief is supended and
crazy Cd players work always

Sorry, could not resist


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