Sony active subwoofer voltage 1v impedance 1kilo ohms any details??????

SOURCE: cd player does not work

The CD spins while the laser tries to focus on the disc, and that's how it knows a CD is in. It's not detecting the disc and so the CD stops. This could be simply dirt on the laser lens, and you could try using a cotton swab to gently wipe it off. If that doesn't take care of it, the laser assembly needs to be replaced. This unit cost about $200 or more if I recall, so it might be worth getting a repair estimate. If this were a typical cheap boombox it would be better to replace it.

SOURCE: radio on my sony rx d7 hi fi 3 cd changer

check to maks sure you have an fm antenna connected

SOURCE: CD changer...doesn't play...says ''no disk''

Yes Dust can cause the problem.
If you want to try cleaning the laser optics:
1. Unplug the unit and remove the cover.
2. Locate the Cd mechanism and you should see the tray where you would normally insert the disc. Look for a glass lens about 1/4 inch in diameter ( usually a blueish tint)
3. With a cotton swab dipped in a little isopropyl alcohol (any pharmacist should have it and it is very inexpensive ) Clean the lens. You do not need a lot of alcohol and any excess will quickly evaporate.
4. Put the cover back on and give it a try

SOURCE: what voltage required to power a sony subwoofer

Well all you need is original system, I got one. The voltage for the sub is about DC 15.5V-15.9V 100%. But theres another problem for me, the subwoofer is active or this only is for the led? I don't believe that you need 15V only for led, so I think it's active, it has internal AMP that uses that current.

SOURCE: i cant find the operators manual for Panasonic audio rack system

That hifi is not an old model,it was made in 2005,try contacting the head panasonic office in japan,they may help you