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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Re: denon m50

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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Re: denon m50

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

Posted on Sep 11, 2007

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Contact any service technician. You can't repair this. The error code list to this set:
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It could just be a simple matter of just slightly adjusting the internal CD mechanism so that it can open and close properly without jamming. The error message comes up because the tray cant eject properly. The worse case scenario is that the CD mechanisam would need to be replaced. Not a hard job for a service engineer, if you dont fancy taking the thing apart yourself then a service centre is your best bet.

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Denon UD-M50 cd changer. Need help extracting drawer for home repair!

Hi KathyKate

If you are still having the same problem with your denon UD-M50 I might be able to help. I have fixed a number of them in the past and have the necessary maintenance manual and knowledge of a company that can supply spare parts. Disassembly looks very complex, especially when the problem is with the carousel but once you have an understanding of the mechanism it's not that difficult. Care should be taken when manually removing and reloading the disc trays as damage can result to the 'Teeth' alongside each. Spare trays are available. All my repairs involved the removal of the carousel mechanism in order to align the trays. I can copy the relevant sections of the manual dealing with the re-alignment which is critical but again if followed exactly you should have no trouble. If you respond with an Email address, I will be only too pleased to forward you the schematics etc.

Regards Ibbotsnm

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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

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