Chosen Solution
My Yamaha CD-S300 CD player is showing UNSUPPORT on the display whenever I put a CD in. It seems to display LOADING for a bit longer than usual and then goes to the UNSUPPORT message and won’t play the CD. I can’t hear any noise so I’m assuming that the disc is not spinning. Switching to the USB mode and then back to the CD mode doesn’t work - it then displays NO DISC. If I then eject the disc and put it back in again I get the UNSUPPORT message again. I have tried several different discs and got the same result. In desperation I even tried turning the player off and on again! (Didn’t help.)
Hi @ceebeegeebee , You can check if the discs are spinning or not by inserting a disc and remembering what position the label was in and then allow it time to check the disc and then eject the disc and check the position of the label to see if it has moved in relation to what it was when it was first inserted. Has it worked OK before when inserting the exact same discs? If it hasn’t, check that the discs are compatible with the player. (see p.8 of the user manual) If it has then here’s the start of the test mode procedure from the service manual. Once in test mode you will be able to test the functions of the CD mechanism. The manual also has the schematics and a full parts which will help to find the problem that will hopefully be shown by the test mode procedure. Hopefully a start.
Hi, we had exactly the same problem this morning. I haven’t used this device for more than 4 years, now it says NO DISC or UNSUPPORT. Fortunately, after about 4 hours of searching for the problem, I’ve found it. There are two ways to solve this problem, both require opening the Yamaha (don’t worry, it’s pretty simple). (1) Unscrew the cover (about 8 screws). (2) After unscrewing, you will find roughly in the middle of the device the main train (where the CD is). There is a laser (transparent dot), if it is dusty then clean it. If it seems clean, then the problem is a stuck wheel that moves the cd and laser. (3) Unscrew this cover as well (4 screws), under it you will find the whole unit (that moves the cd and the laser), you will also find a gray wheel there, move it so that the whole unit moves to the other side (of the cd track). Before screwing everything back in, I recommend trying it first. So plug it back into the socket (carefully, don’t touch anything) and put the CD in there. Now it should work.
