I found an old post with the same part number.
https://www.mobileread.com/forums/showpost.php?p=75676&postcount=88
I haven't been able to find a picture either. I did find a supplier of the Sony parts in the USA
http://www.unionel.com/website/customer_support.html, but they are out of stock.
I wonder if you could order one from the US repair center at lower cost than the Sony website?
Sony Consumer Direct Return Center
10227 Crossroads Loop, Suite R
Laredo, Texas 78045
Sony Style Customer Care at (877) 865-7669
I also found an old post with
internal pics of the 500.. I thought there was a post by igorsk with 500 pics but wasn't able to find one.
Good luck. I hope some of this helped.