hi
i have the same problem, with mine, is their any way to fix this i don't
know much about it but im sure if you gave me some instructions i would be
able to play and fix it.


"Nigel Cook" wrote in message
...

"Nigel Cook" wrote in message
...
Am wrestling with a 5 CD shuffle mechanism on a Panasonic SA CH 74
Does anyone know of a general resource for mechanical problems wth
variants
of these beasts ?
This one has 5 separate platters to hold each CD.
On entry the CD sldes along the bottom ,is elevated by the laser +
spinner
assembly and 4 flimsy 'ratchet' pawls hold the carrier in the elevated
position and the main slide mchanism returns the carrier to the top of
the
stack of 5 after playing.
Anyway something ,undiagnosed ,causes the top level transfer to stick
part
across ,cannot see what ,
with all the mechanism in active position. As a fall-back ,disabling the
pawls and associated high level slideway the carrier will move in and
out
at
low level for single CD operation without jams.
Unfortunately a flimsey microswitch monitors carrier across the top and
i
won't know what effect non-switching of this micro will have until i
rerassemble it all.
Marvelous array of mechanisms all coming off the one motor drive or it
would
be
if it worked. What sort of mind designs these mechanisms, rotary,rack
and
pinion, latches, slideways,reciprocating motions

e-mail (removing .....) electronic hints and repair briefs , schematics/manuals list on
http://homepages.tcp.co.uk/~diverse

Nigel,Diverse Devices,Southampton,England


For the archives - problem solved.
Why will owners not admit they wrenched things to retrieve CDs
and tapes. They must think we will penalise them in repair charge for
there
ignorance ,wheras in fact honesty should help us zero in on the problem
quicker. We've
seen it all before but sometimes like this case it is not immediately
obvious.
Retrieved a diplaced torsion spring from
elesewhere in the casing. This biased a latch that engaged / disengaged at
the point where CD platter sliding along base changes to vertical movement
o
f the laser + spinner and carrier.
It looks as though a physically large but not strong torsion spring ,now
missing, used to be at the
centre of a long lever and quadrant cog that drives a lead screw to push a
lifter of all the stacked CDs.
Could not make sense of this spring as to function properly seems to be
the
reverse action to what the anchor hooks would suggest.
Finally under the front edge of the CD carrier slideway is a little
passive
latch that holds/releases
the bottom-most carrier relative to the slideway. This ,not obviously as
covered,was out of alignment because the central plastic pin was broken-
replaced with glued in nylon bolt after drilling a hole.