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Sony CDP C245 , 5 disc carousel

N

N Cook

Drawer jamming or not opening with a rubbing noise in the background.
Probably due to the toothed belt slipping on the motor pulley because the
spindle of the driven pulley or its "bearing" has worn and allows the 2cnd
pulley to tilt over. At the moment I intend packing out the gap, into which
the pulley tilts, with a couple of PTFE blocks. Any other ideas ? belt has
not stretched.
No proper bearing as the plastic pulley shaft just goes through a thickened
boss of the plastic chassis.
The tilting does not seem to disengage, from the 4th, the 3rd cog on the
other end of the 2cnd cog shaft
 
M

MrManuals

Drawer jamming or not opening with a rubbing noise in the background.
Probably due to the toothed belt slipping on the motor pulley because the
spindle of the driven pulley or its "bearing" has worn and allows the 2cnd
pulley to tilt over. At the moment I intend packing out the gap, into which
the pulley tilts, with a couple of PTFE blocks. Any other ideas ? belt has
not stretched.
No proper bearing as the plastic pulley shaft just goes through a thickened
boss of the plastic chassis.
The tilting does not seem to disengage, from the 4th, the 3rd cog on the
other end of the 2cnd cog shaft

This Parts & Service manual can now be purchased for $9.99 and
downloaded immediately after payment from
http://www.justmanuals.com/product_info.php?products_id=10245

Paul


 
N

N Cook

N Cook said:
Drawer jamming or not opening with a rubbing noise in the background.
Probably due to the toothed belt slipping on the motor pulley because the
spindle of the driven pulley or its "bearing" has worn and allows the 2cnd
pulley to tilt over. At the moment I intend packing out the gap, into which
the pulley tilts, with a couple of PTFE blocks. Any other ideas ? belt has
not stretched.
No proper bearing as the plastic pulley shaft just goes through a thickened
boss of the plastic chassis.
The tilting does not seem to disengage, from the 4th, the 3rd cog on the
other end of the 2cnd cog shaft

I assume the rumbly noise is normal for these, due to pulsed drive to the
drawer/other mechanicals motor. Slow drive at start and end but stronger
drive in mid travel. The motor is not really torquey enough for all this and
my PTFE bearers .
Relieved some of the back torque by replacing one cam follower spring with a
lighter one and moved the anchor point of the other spring to relieve.
Liberal lubrication, and if that disappears at a later date, at least the
toothed belt will not jump with an even greater ratchety/rumbley noise and
then fingers help if required.
 
D

David Farber

N Cook said:
Drawer jamming or not opening with a rubbing noise in the background.
Probably due to the toothed belt slipping on the motor pulley because the
spindle of the driven pulley or its "bearing" has worn and allows the 2cnd
pulley to tilt over. At the moment I intend packing out the gap, into which
the pulley tilts, with a couple of PTFE blocks. Any other ideas ? belt has
not stretched.
No proper bearing as the plastic pulley shaft just goes through a thickened
boss of the plastic chassis.
The tilting does not seem to disengage, from the 4th, the 3rd cog on the
other end of the 2cnd cog shaft

I had one of these Sony carousel machines with the same problem. It took me
a while to figure it out. The plastic window that covers the front panel
display had slipped down just enough that it would rub against the drawer as
it opened or closed. See if you can find some scratch marks on the drawer.
 
N

N Cook

David Farber said:
I had one of these Sony carousel machines with the same problem. It took me
a while to figure it out. The plastic window that covers the front panel
display had slipped down just enough that it would rub against the drawer as
it opened or closed. See if you can find some scratch marks on the drawer.

the display bezel is fine on this one.
It is used commercially so a lot of use since 1994, can't complain about
that.
The motor is really too small, presumably only just adequate when new.
The owner is happy enough half-closing the drawer by hand rather than
pressing the eject button. Presumably that large overhang when open
sometimes means the inward time slot times out pulling the drawer in against
this overhang. Opens always ok and the subsiduary CD lift sub-mechanism
works consistently.
 
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