Aiwa CXNMT90 CD Player Read Problems

[Kiran Venkatesh]

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&[email protected]&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

 

[Mark D. Zacharias]

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.

 

[LASERandDVDfan]

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.

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 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 would advise never to use those CD lens cleaning discs. They are not very
effective and can damage the optical pickup when used.

I have some basic electronic experience (soldering iron, breadboard,
etc..) and have access to a fully fledged electronics lab with help

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

 

[Kiran Venkatesh]

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

 

[LASERandDVDfan]

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!

Good luck. - Reinhart

 

[Blade5156]

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

 

[Blade5156]

Thanks for the info. It worked.