If your Sony MDS-E OR MDS-JE mini disc unit will not eject the disc or load the disc, this is the replacement belt you need. You will receive TWO (2) replacement belts, not only to have a spare, but they are very easy to lose, especially if they shoot away like a rubber band during installation.
I have personally replaced the belt in two Sony MDS-E10 and MDS-E12 units that would no longer eject the disc, and these bands work great, and are still working great 4 years later. Once you open the lid and view the location of the two white pulleys (see photo), you can bend the end of a paper clip to remove the old band and install this new one. No special tools required. And you can contact me for help if you need it.
$9.00 for 2 belts. Local pickup, or fast, free shipping using PayPal F&F.
Contact me with your model number, I also have belts for Sony models MDS-501, MDS-510, MDS-S30, MDS-302, MDS-JE640, MDS-JE440, MDS-JE470, MDS-JB940, MDS-JE640, MDSJE640, MDS-JE480, MDS-JE780, MDS-JB9401, MDS-JE6, MDS-JE640, MDS-JE640C, MDS-JE770, MDS-JE780, MDS-LSA1, MDS-NT1, and JVC model XU-301, for $9.00 each with free shipping.