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Sony CDP C245 , 5 disc carousel

Discussion in 'Electronic Repair' started by N Cook, Apr 17, 2007.

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  1. N Cook

    N Cook Guest

    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
  2. MrManuals

    MrManuals Guest

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  3. N Cook

    N Cook Guest

    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.
  4. David Farber

    David Farber Guest

    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.
  5. N Cook

    N Cook Guest

    the display bezel is fine on this one.
    It is used commercially so a lot of use since 1994, can't complain about
    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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