befresh

Today I picked up a Sony MDS-JA30ES, a beautiful machine, but does not read disks anymore:"DISC ERROR" and ejects the disc. When disassembling the drive there's a model number on the pickup assembly: "1-653-413-15" followed by a code: "MBU2-BD-15". There's not much info on the internet, only a russian site describing it as used in a MDS-303. This got me thinking, is there any documentation with a comprehensive overview of which players have shared parts that you could harvest from?