Sony X5000 troubleshooting - Page 9

Mooly · 16th February 2013, 12:04 PM

I would doubt it very much. Its probably part of the laser power control circuitry.

Salar · 16th February 2013, 12:19 PM

It drives the laser diode as far as I understand. 2SP1013 is connected to transistor RM2401 which has JW600 connected to its base. (JW600 was the resistor with wrong value . 330ohm soldered in, but 10ohm in datasheet)

dacen · 02:53 PM

Increasing the power on reset timing was not the solution to this problem. Hmm, have another thing I want to try and that is to give the power supply to the laser a separate voltage regulator with a deacent HF decoupling. Will advise in a while.

Salar · 18th February 2013, 08:36 AM

Great, thanks! Eager to hear results.

Salar · 19th February 2013, 02:00 PM

Another "test": Had the Player switched on for 45 Minutes without playing. About 15 degrees centigrade ambient temperature.
After those 45 Minutes I started playing a CD. The CDP-X5000 skips when playing it. So the parts prone to cold must be parts that heat up when the X5000 is playing.

gmphadte · 22nd February 2013, 06:38 AM

The arcs I am talking of, r the tracks on the cd. Near the centre of the CD, the head has to respond faster. The spin motor also has to have tight tolerance so the already difficult tracking does not become more difficult.

Gajanan Phadte

Salar · 22nd February 2013, 10:25 AM

The fault is completely independent from that. It happens in the outer tracks as well as in the inner tracks. It is related to temperature, not progression of the CD.
Also relative speed to the laser head is the same from inner to outer tracks.

il capo · 22nd February 2013, 03:27 PM

Quote:

Originally Posted by Salar

Another "test": Had the Player switched on for 45 Minutes without playing. About 15 degrees centigrade ambient temperature.
After those 45 Minutes I started playing a CD. The CDP-X5000 skips when playing it. So the parts prone to cold must be parts that heat up when the X5000 is playing.

Hi,
my player works fine if i only warm it up without playing ...

il capo · 22nd February 2013, 03:30 PM

Quote:

Originally Posted by Salar

The fault is completely independent from that. It happens in the outer tracks as well as in the inner tracks. It is related to temperature, not progression of the CD.
Also relative speed to the laser head is the same from inner to outer tracks.

...reading errors occur only for the first or second track of the cd without warm up...if i play a track that is not near the center of the cd, even without warm up i get NO reading errors...

il capo · 22nd February 2013, 03:32 PM

aahhhh this is really confusing!!!!!

16th February 2013, 12:04 PM	#81
Mooly diyAudio Moderator Join Date: Sep 2007	I would doubt it very much. Its probably part of the laser power control circuitry. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

17th February 2013, 02:32 PM	#83
dacen diyAudio Member Join Date: Jul 2006	Increasing the power on reset timing was not the solution to this problem. Hmm, have another thing I want to try and that is to give the power supply to the laser a separate voltage regulator with a deacent HF decoupling. Will advise in a while. Last edited by dacen; 17th February 2013 at 02:53 PM.

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16th February 2013, 12:19 PM	#82
Salar diyAudio Member Join Date: Feb 2006 Location: Germany	It drives the laser diode as far as I understand. 2SP1013 is connected to transistor RM2401 which has JW600 connected to its base. (JW600 was the resistor with wrong value . 330ohm soldered in, but 10ohm in datasheet)

18th February 2013, 08:36 AM	#84
Salar diyAudio Member Join Date: Feb 2006 Location: Germany	Great, thanks! Eager to hear results.

19th February 2013, 02:00 PM	#85
Salar diyAudio Member Join Date: Feb 2006 Location: Germany	Another "test": Had the Player switched on for 45 Minutes without playing. About 15 degrees centigrade ambient temperature. After those 45 Minutes I started playing a CD. The CDP-X5000 skips when playing it. So the parts prone to cold must be parts that heat up when the X5000 is playing.

22nd February 2013, 06:38 AM	#86
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	The arcs I am talking of, r the tracks on the cd. Near the centre of the CD, the head has to respond faster. The spin motor also has to have tight tolerance so the already difficult tracking does not become more difficult. Gajanan Phadte

22nd February 2013, 10:25 AM	#87
Salar diyAudio Member Join Date: Feb 2006 Location: Germany	The fault is completely independent from that. It happens in the outer tracks as well as in the inner tracks. It is related to temperature, not progression of the CD. Also relative speed to the laser head is the same from inner to outer tracks.

22nd February 2013, 03:32 PM	#90
il capo diyAudio Member Join Date: Feb 2013	aahhhh this is really confusing!!!!!