Question about Denon D-M50S CD Shelf System

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Denon m50 The cd function on my set stopped working and display said Mechanical Error, any ideas?

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  • Ibbotsnm Dec 15, 2007

    Hi Scobie
    I have experienced the same problem which turned out to be very simple to resolve.

    The player immediately after being turned on and following the usual 'Hello', would display 'mechanical error'. It was accompanied by a whirring noise rather than the usual disc shifting sound and noticeably there was no 'clump' as the selected disc fell to the turntable. It turned out to be the Clamping mechanism located to the rear of the carousel mech. not having moved through it's full drop and so not locating the disc properly. The cause was that the lubrication of the plastic lifting components had dried out and the clamping mechanism was not moving freely enough. I think this results in a 'Race' situation with other moving parts of the carousel causing a jam. By gently relocating the jammed trays and ensuring free movement of the clamping mechanism the problem was resolved. a point to note. The lubrication appears to be a specialist one used particularly for plastics. Other types I have tried will not work well especially when cold.

    Regards Ibbotsnm

  • ACD70 Dec 31, 2007

    Hi there... I'm experiencing the same issue & would appreciate any & all help you can give. My e-mail address is anthonycduncan@hotmail.com.



    Thanks in advance....

  • 6woody7 May 27, 2008

    i have got two CD's stuck in one tray. What do I do? I have a UD-M50

  • JezBaz Mar 09, 2009

    1.  CD changer jamming.  this is the third time for this unit, twice fixed under warranty, but this time i have to pay.
    2.  Volume control wayward and sometimes willnot reduce.
    3.  Tuner now seems to be messing around.


    Can anyone assist in fixing any of these?


    from teh posts it looks like this unit is just poorly designed.


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Hi Scobie
I have experienced the same problem which turned out to be very simple to resolve.

The player immediately after being turned on and following the usual 'Hello', would display 'mechanical error'. It was accompanied by a whirring noise rather than the usual disc shifting sound and noticeably there was no 'clump' as the selected disc fell to the turntable. It turned out to be the Clamping mechanism located to the rear of the carousel mech. not having moved through it's full drop and so not locating the disc properly. The cause was that the lubrication of the plastic lifting components had dried out and the clamping mechanism was not moving freely enough. I think this results in a 'Race' situation with other moving parts of the carousel causing a jam. By gently relocating the jammed trays and ensuring free movement of the clamping mechanism the problem was resolved. a point to note. The lubrication appears to be a specialist one used particularly for plastics. Other types I have tried will not work well especially when cold.

Regards Ibbotsnm

Posted on Dec 15, 2007

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You can probably fix it yourself but you may need some parts. Here's Denon's link that'll take you to the next step http://www.usa.denon.com/

Posted on Sep 11, 2007

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It sounds like the cd tray has been forced shut and has been damaged when you got the CD's out. If it was me I would of unscrewed the casing and retrieved the CD's that way instead of trying to force the try open which I'm assuming you have done.

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