Question about Denon D-M3 Shelf System

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Cd motor not spinning

I have a (u)d-m3 system, the cd drawer opens and shuts all ok but the motor to spin the cd does not work, i know these units are unreliable on the cd side, but have not come across this problem . any hints/tips very welcome thank you polyroly

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  • Mary Perkins
    Mary Perkins Jan 31, 2008

    SHUT CD LID CD DOES NOT SPIN . MAYBE LASER ... NO MOVEMENT.

    WHAT CAN I DO? OR WHERE CAN I TAKE IT TO HAVE IT FIXED OR REPLACED? REALLY LIKE MY SYSTEM.

  • name one Apr 10, 2008

    I have used the function control for CDS, open/close button and placed a CD in the tray. When I hit play the diisplay only shows 0000000's and does not run.

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The motors spin constantly if you play a disk on it all day think how many hours its runnign the motor. The lazers also move in and out and up and down during play and thats just one more mechanical part that can fail. Once we get all mechanical parts out of the devices we will have less trouble with them.

Posted on Apr 10, 2006

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Buy another CD player and plug it into the Aux jacks at rear of CD player and for a small purchase price, voila, you can listen to your CDS again.This will also give you some warranty on your new CD player. I have striped my JVC MX D4T and that is what I am going to do to fix the problem.

Posted on Oct 06, 2007

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Can I buy a new motor from somewhere? Or buy a new cdrom for it? I like this system but I don't want to spend too much on it.

Posted on May 06, 2007

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These sets are very common for defective spindle motors as we usually just replace them and that corrects the problem. But sometimes it doesnt fix it and it turns out to be a defective laser assy as any cd or dvd player/recorder must focus on the disc before a spindle will spin. Oh one more possible problem could also be the turntable could have gotten pushed down and wont let the lens focus.

Posted on Apr 09, 2006

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Posted on Jan 02, 2017

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SOURCE: 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

Posted on Dec 15, 2007

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Hi First of all, you must find all the screws for the top cover and remove it. Make sure the unit is not plugged in! Then, making sure that you are not touching anything inside the unit, plug it back in,put a Cd in the drawer, and watch what happens. If the drawer closes, but you can still hear a motor running, then it is a belt drive unit, and the belt is slipping, if that part is ok, listen carefully for a ticking noise, which is the laser lense going up and down trying to focus on the CD, if the disk starts to spin then the mech has closed properly, and the unit is trying to find the directory. If the unit then spins the disk for a while then ejects it, then the laser is dirty or faulty. I would suggest getting it cleaned at a shop if the lense appears dirty. ***Never look straight down at the laser lense if it is exposed on your model of CD player, it is a class 3 laser, and you will be doing some harmful home laser surgery to yourself!!!*** Hope this helps! Good Luck! P.S. When following the steps above, if you hear the ticking of the lense moving up and down, but the disk does not spin, gently spin it clockwise with your finger, if it starts to play, or finds the directory, then the spin motor is bad.

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