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Aiwa CXNMT90 CD Player Read Problems

Discussion in 'Electronic Repair' started by Kiran Venkatesh, Jun 22, 2004.

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  1. I've been reading about problems with Aiwa CD players and I was hoping
    if anyone could offer any advice for my situation. I have an Aiwa
    CXNMT90 system whose CD player will attempt to read a CD where the
    head will spin the disc several times and eventually give up after a
    few spins and move on to the next CD in the 5 CD tray.

    Some folks have said that a certain cable is to blame or optical
    pickups might be the problem
    (http://groups.google.com/groups?q=a...epair&selm=8o25bs$a4b$&rnum=5).
    I have tried to use a lens cleaner but when using it, the CD player
    treated it as any normal CD and was not able to use the CD to clean
    the lens.

    I have some basic electronic experience (soldering iron, breadboard,
    etc..) and have access to a fully fledged electronics lab with help
    and am wondering if something like this can be fixed without the need
    to go to a professional, or is it not worth it considering the
    probability of making a mistake or the fact that new systems come
    cheap.

    Thanks in advance,
    Kiran
     
  2. Worth a try cleaning properly. Generic advice follows.

    Have two cotton swabs ready -- one moistened but not dripping with Windex or
    similar window cleaner, the other dry. Some prefer alcohol (91% isopropyl,
    NOT rubbing alcohol). GENTLY clean the lens in a circular motion, rolling
    the swab as you go. Follow with the dry one to get any residue. DO NOT
    adjust anything without proper test equipment and a service manual. You'd
    only make things worse, maybe to the point of not playing at all.

    Mark Z.
     
  3. I have an Aiwa
    The objective lens either collected dust that's intercepting the beam or the
    ribbon cable that connects the optical pickup to the control/process
    electronics has developed breaks (assuming that your particular Aiwa uses a
    ribbon cable instead of a bona-fide wiring harness).
    I would advise never to use those CD lens cleaning discs. They are not very
    effective and can damage the optical pickup when used.
    You may not need those resources for this particular repair.

    It's a matter of taking the cover off and getting to the optical pickup with a
    cotton swab lightly dampened with medical grade rubbing alcohol. Gently rub
    the lens clean with the alcohol-moistened swab. It may also help to oil the
    disc spindle motor sleeve bearing with a sparing amount of high quality low
    viscosity oil. - Reinhart
     
  4. Thanks for the tips. Reinhart, I'll try and open up the unit to
    access the lens to give it a clean. I'll let ya'll know how it goes.
    Much appreciated!

    Kiran
     
  5. Thanks for the tips. Reinhart, I'll try and open up the unit to
    Good luck. - Reinhart
     
  6. Blade5156

    Blade5156 Guest

    I have recently experienced the same problem. I will attempt to do the
    same. I hope it works. By the way has it worked for you Reinhart?

    Blade5156
     
  7. Blade5156

    Blade5156 Guest

    Thanks for the info. It worked.
     
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