Question about Pioneer PD-M406 6-Disc CD Changer

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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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Re: Cannot get music CD's to read.

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

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Re: Cannot get music CD's to read.

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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