Question about Pioneer PD-M406 6-Disc CD Changer

2 Answers

Cannot get music CD's to read.

When one inserts the cartridge of CDs the machine accepts #1 then replaces it.  After all six CDs have been accepted, then rejected, it stops.  As this process happens rather quickly, no CD is read, therefore nothing plays.  Also, this unit has been instorage for ten years

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  • Anonymous Dec 11, 2007

    Same problem. I recently moved and the unit worked well prior to the move. After the move, it cycles through each CD until all are rejected. I took special care in moving the unit and I suspect the problem may be due more to the extreme age (at least 10 years) than fragility during the move. There does not seem to be a current offering from Pioneer that matches or supersedes this unit. I am reluctantly looking to a different brand now.

  • Raven fan Jan 29, 2008

    Have the same problem with the Pioneer PD-M530 6 disc multi player. Robotek, your advice was right on as I turned the unit on its side, and a small clear plastic laser lens (I presume) dropped out. I took the unit apart, could not figure out how to put the lens back in. Do I need to replace the lens all together as it doesn't seem to be able to stay in, or do I "adhere" it with some type of adhesive. Any advice on fixing would be much appreciated!

  • Whatgives Dec 28, 2008

    I have the same problem. Had a 94 model, called Pioneer and was told the lens was probably bad. Took it to a licensed Pioneer repair place, they re-glued the lens, said it worked. I took it home and still had the same thing happen...shuffle through the discs, not play, etc. Ordered a brand new Pioneer 6 disc changer, just got it yesterday, hooked it up and it does the very same thing!!! Frustrating. I am beginning to think the first one is probably ok, maybe I don't know how to hook it up to the receiver correctly or how to operate it with the remote correctly. Anyway, I'm at a loss here and don't know what to do next! Anything else you can suggest?

  • Graeme Ross
    Graeme Ross May 11, 2010

    if you tip the unit on its end and back do you here something rattling around inside... these units had a common problem of the laser lens dropping out(laser "hangs" in unit. Hit me back if you still wanna fix :)

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The lens have a bad habit of falling out of the optic assemblies. They are held in with only a 2 dabs of glue. You can VERY CAREFULLY glue it back in. It is a plastic lens and affected badly by the wrong type of glue. Use a craft/modelling glue. DO NOT USE SUPER GLUE It will cloud the lens and render it useless.

  1. Remove the lid and remove the 4 screws that retain the laser traverse assemly(it has a brown flexifilm attached to it). dont UNPLUG ANYTHING
  2. Gently turn the entire optics assembly over by carefully maneuvering it(there is an earth strap to unscrew that may make it easier).
  3. Wit the assembly facing upwards, refit the lens back into the laser assembly, ensuring that it is sitting entirely flat
  4. Then use a tiny dab of glue( I use a Tarzan's Grip, a craft glue ) to EITHER SIDE of the lens making sure that it is dabbed on both the lens and the mount that it fits into
  5. Let the glue go off(couple of hours)
  6. Clean the lens with a cotton tip moist with windex(glass cleaner), and then again another dry one to be sure there is no smear left.
  7. Remount the traverse assembly and test
Check that the rubber suspension mounts have not perished also If they have collapsed(they should sit within about 1mm of the retainer screws when refitted), they will need to be replaced also. You will need to get them from a Pioneer service center. They are about $1.00 each.

APPLY SPARINGLY. Glue everywhere or on the face of the lens can easily destroy the coating.

This method works 4 out of 5 times without having to do the grating adjustments on the optics. And save you $100 for new optics and time to set them up. Good luck, and dont forget to rate me "FixYa" If you need more advice on these players... i have fixed hundreds of them. They are well worth repair and hard to replace with anything similar. .

Posted on Feb 06, 2008

  • 1lessmail Feb 10, 2011

    2-10-11 - I just did this fix and it worked great! Thank you so much for the information. My CD player had been in a box for 7 years from the last time I moved. Just found it. The Laser thing was off and your solution has saved the day. I had 10 of the CD cases and did not want to have to buy another system. PS I am an old lady and did it myself. Your instructions were great. I used E6000 Glue on the end of a pin and tweezers.

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On the face of this machine find the vertical button row which selects discs 1-6. Take a can of Air Duster and blow out the dust from around these buttons as thoroughly as possible. Now plug the set in and turn the power on an let it sit over night powered up to cook out the moisture.Now insert the magazine and give it a try.It worked in my seemingly hope...less case.Good luck.

Posted on Feb 17, 2010

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