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Greg Bailey Greg Bailey is offline
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Default Can someone help me do a minor fix to my stereo?

THANK YOU!!! This is exactly what I needed. And it looks like I'm going to
be the one to do it, no local techs would fool with it.


"Dave" wrote in message
news:jcZzj.85381$C61.60797@edtnps89...

"Greg Bailey" wrote in message
...
No, all I got was a piece of felt, a brass weight and a screw. I've been
trying to find a diagram of that particular pickup online, to use as
reference, without any success so far.


Have a look he

http://electronics.howstuffworks.com/cd4.htm

The optical pickup is the lens you see which is on a sled which moves
horizontally as the CD spins. As in the picture in the above link, the
pickup head is often attached to a small circuit board with some
focus/tracking components. You can actually see a screw in the picture,
although yours might be somewhat different it shouldn't be rocket science
to open it up, remove a screw holding the laser assembly to the attached
PCB, and install the brass one. Be careful not to move any of the pots
(they'll probably have a drop of adhesive keeping them from moving) as
that will mess up your focus/tracking/alignment. As far as the hunk of
felt, I assume it's got sticky backing on it on one side? When you open
up the player, there is, to use Sony's term, a "clamper" which grabs the
CD, allowing the spindle motor to spin it. You need whatever is attached
to the spindle motor (called "disks drive" in the picture) to have
friction on the disc, so I'd think the felt washer would go on the other
side (which would be the top), but it should be obvious where the washer
will fit once you get things opened up.

Don't worry about this one: it's not at all a technical repair and if you
are careful, it'd be pretty hard to break anything.

Dave