Audio Systems: Bose audio cd player, audio cd player, bench test

Question
Thanks for reply but I suspect it can be something different.
When I insert CD to CD drive it sounds like if it is trying to find a track or something, then it just stops turning and ejects the CD itself and says Err.

So maybe I should take it out and take a look at it?
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Followup To

Question -
Good afternoon,
I have question regarding my Bose stereo.
It's CD player installed in my Infiniti.
It does not want to play any CDs. It just shows an error and pulls CD back.
It did not play untill battery was unplugged then it played one CD now it does not play again.
What can be wrong with that? I cleaned the lens with laser lens cleaner - nothing.
Is there any way I can avoid paying $300 for repair?
Thank you so much

Answer -
Don't pay $300 for the repair!  You can buy a new one for less.

So, what happens if you disconnect the battery again?  Does it play?

I suspect a wire has broken off; one of the 12v lines that powers the standby functions.

You can crawl around and check for a loose or broken wire on your own, or take it into an install/repair shop and have them look at it.  Often they will take a look in the window and give you a quick analysis of what is wrong.

You can go to www.crutchfield.com and they will show you all that fits your car.  If you purchase from them you will get the wiring guide, wiring harness and complete installation instructions.  They are very good.

Let me know more after you have explored the battery and loose wire angle.

Cleggsan
PS: If you are brave and want to get to the bottom of it you can do your own bench test.  Pull the unit out of the car; run long wires from the battery to power it and hook up an external amp/speaker to listen to it.  By seeing how it performs out of the car you can determine if the unit is in good working condition or not. If so, the problem is in the car wiring or interface with other voltage lines, etc.  

Answer
Yes, ERR is a different matter all together.  A bench test would still be a good idea.  Sometimes the mounting inside causes torque on the chassis just enough to make the spinning and drive mechanisms faulty or intermittent in their behaviour.

But, normally, the err message means the diode is gone - or too weak to read the data on the disk.  Can also be the digital decoder that is malfunctioning or the optical pickup assembly it badly out of alignment; in any of these cases the  digital information is not getting to the right place where the system can read the table of contents, etc.

If the diode or the pickup or the digital decoder is out of whack the cost of repair is quite high.  So, you have to think about repair or replace.  It is not the kind of repair a hobbiest can do; it requires special test instruments and know how at the advanced technical level.

With a set over 3 or 4 years of age you will be better off replacing - in the long run.

Cleggsan

PS: I am still wondering if it will play when you reset the power line!