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Yamaha CDX-590 laser adjustments?

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HWTest

I have a Yamaha CDX-590 CD player and it skips on some CDs - original CDs, these CDs play without problems on my other CD players.
I have changed the laser unit (KSS-210A) but this didn't solve the problem.
When I turn the player upside down, it plays the problematic CDs without a problem.
That's why I think the laser needs adjustment.
I have only a service manual for the CDX-493/593 but they should be very similar to the CDX-590.
It seems that the adjustments are done via "test mode" of the CDX-590, unfortunately there is not much information, how to exactly, in the service manual.
Here is a picture of the PCB.
http://www.volny.cz/hwtest/PCB.JPG
Here are the "test mode" sections of the service manual.
http://www.volny.cz/hwtest/TM1.GIF
http://www.volny.cz/hwtest/TM2.GIF

In "test mode" I have tried Auto adjustment mode 1, 2, 3, but I don't know if it should work fully automatic without any intervention or when the mode is fineshed and I can proceed to the next one.
So I activated mode 1, waited a while, activated mode 2, waited a while, activated mode 3, then exited test mode.
It didn't help.

Mode 1 - only a short blink of two horizontal dashes on the display and thats it
Mode 2 - started "play" without sound from a strange time 99:00 (the test CD is not so long), after a while it skips to another time, "plays" a while, then skips back and "plays" and so on, I left it about an hour and it was still going on
Mode 3 - seems to be very short as mode 1

I think I'm missing something ...

Maybe someone did this or even serviced Yamahas in an official service and can provide information how to adjust the laser?
Or maybe the problem is not the laser?

Comments
balage

Hi!
In my experience,there is no working KSS210A on the market.
Try this: http://elektrotanya.com/kss210_fejegyseg_helyettesitese_213-al.zip/downl...

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HWTest

Not even the original SONY units?

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balage

I think, the original units also made in China.

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HWTest

You are most probably right.
I was told, that the original SONY are OK and with the non-originals it is hit or miss ...

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city217

Sziasztok.
Valaki lefordítaná?
A lemez tányér magasság nem megfelelő, talán felfele elmozdult amit nem szokott. De ha fejjel lefele működik akkor a lézer közelebb kerül a lemezhez és olvassa.

ui. Nekem így sikerült.
The disc table height is not correct, maybe you do not usually moved up. But if you upside down with the laser closer to the disc and read.
Üdv

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HWTest

Sorry I don't understand Hungarian :-(

I'll check if there is something I can do with the disc table height.

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Yamaha

It is possible that spindle motor does not work well.
Try to replace, but first measure the height of the base plate platter. The new engine therein shall be restored this point!

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