"Cliff Top" wrote in message
...
Its more likely the laser focussing circuit is off somehow, and only
actually locks onto the disc with the mechanical lean to one side.
A gentle!! adjustment of laser power, Fgain and Foffset (remembering their
original places) may help.

If however there are squeeking noises from the laser while the disc
doesn't
spin then its possible you have a spindle drive problem.



Sorry Cliff, but having worked on Sony CD players since they first came out,
I would absolutely dispute that your scenario is " more likely ". Focus
servos will lock a normal focus motor ( and indeed likewise the tracking
servo will do the same for the tracking motor ) at ANY angle, including
upside down. The lens, lens suspension and tracking and focus motors, do not
have enough mass to be sufficiently affected by gravity, that any such
effect is not easily compensated for by the power of these motors. I can't
remember *ever* having had a situation where focus gain and offset
adjustments have drifted on their own to any degree anyway, and still less,
have caused a problem that could be corrected by imposing a mechanical tilt
to a deck.

Also, I would absolutely advise against adjusting the laser power - not even
gently. It is NOT a valid adjustment on any Sony player, and in fact, on
very few players of any other manufacture, Pioneer being a notable
exception. Indiscriminate adjustment of laser power - even by a *tiny*
amount, can readily result in destruction of an otherwise good laser. Focus
gain and focus offset should only be adjusted with the benefit of a service
manual, and the proper equipment, or by long experience.

The comment about being able to hear the servos squealing, if you rock or
rotate the disc by hand when it's not turning under it's own steam however,
is a good pointer. If you do hear the squeal, there's a good chance that the
focus and tracking servos are locked, and the spindle motor is just not
being driven. If there is no servo squeal, then probably, the servos are not
locked, which is causing the system control to inhibit the spindle servo. I
would still be looking at the spindle motor stator connection soldering
first, and also at any connectors and wires going to the spindle motor
board.

Arfa