Question about Denon D-M31S CD Shelf System

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Subwoofer what do i need to connect a subwoofer to my Denon UD-M31

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What do i need to connect a subwoofer to my Denon UD-M31

Posted on Apr 20, 2008

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Denon ud m31

Get the manual and read it.

Aug 05, 2013 | Audio Shelf Systems

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Denon ud-m30 Tuner problem I can tune am stations, but not fm. Receiver doesn't even receive signals from my nokia n97 transmitter 5 cm away on the known frequency. Is it possible that fm unit is out of...

I have just solved this problem with my system - it is caused by bad connections between the boards. There are multipin connectors that connect the main boards together via a small vertical board. Check that these are fully connected and you will probably solve the problem.

May 30, 2010 | Denon D-M30 CD Shelf System

3 Answers

I have a Denon UD-M5 that's 10 years old but has been working fine. I have just moved house and I think it was damaged in transit - the CD display just says ERR and I can't open any of the the drives....

Neither of the earlier responses actually understand the problem. What's much more likely is that, unlike a mechanically stuck drawer or derailed CD, you won't hear _anything_ when you fire up the unit. And, if you switch on the unit with any one of the 'load' buttons (rather than the power button) you'll get an ERR msg for that slot. Our unit was about the same age, so not surprising to see a similar failure. It's a tiny fuse on the top circuit board. The UD-M3 suffers from the same fuse blowing--theirs is labled PR003; on the M5, it's PR004. Look on the extreme right edge of the top PCB for a small orange resistor-looking micro-fuse with a '750' beside it. That stands for 750mA, which is what I went down to Radio Shack (The Source) and bought for $2, along with an inline fuse holder ($5). It's a small screw-together capsule with 4" leads on either end. Solder each end on either side of the blown component and you'll be back in business for under $10 and about an hour's effort.

May 16, 2010 | Denon D-M50S CD Shelf System

1 Answer

My Kenwood UD-500 Shelf System doesn't switch sources,

did u ever solve this problem? I have exactly the same problem?!

Oct 06, 2009 | Kenwood UD-C00 Shelf System

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Have you unplugged it from wall since ?
and, do you know if maybe the speakers are blown?
Bad speakers will make it stay in "protect"
Try other speakers after the unplug-plug back in routine.
Try the Denon website for a manual

Jan 11, 2009 | Denon D-M50S CD Shelf System

1 Answer

Deneon UD M50 - Tray jam

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.

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.

Nov 01, 2008 | Denon D-M50S CD Shelf System

1 Answer

Denon D-M50S

Get the adabtor that can take the headset output and convert it to compatible connections for your sound system. I believe your sound system uses the RCA phono plug type connections.

Places like Radio Shack should be able to help you with what you need.

Jerry G.

Apr 12, 2008 | Denon D-M50S CD Shelf System

8 Answers

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

Nov 15, 2007 | Denon D-M50S CD Shelf System

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