This appears to be a tough one to find for free. There is some info out there - but it will cost a few bucks. The service manual or sometimes called a "shop manual" is for those that work on damaged units - and is probably over the top for your needs. The operating manual or owner's manual is likely the same as the one that came with the unit when new. Either can be had at the site below for $15 and $10 respectively:
I am not affiliated with this or any other site that charges for manuals, tips, advice, etc.; and only offer it as a source for the info you're looking for. I hope this helps!
Answers & Comments
This appears to be a tough one to find for free. There is some info out there - but it will cost a few bucks. The service manual or sometimes called a "shop manual" is for those that work on damaged units - and is probably over the top for your needs. The operating manual or owner's manual is likely the same as the one that came with the unit when new. Either can be had at the site below for $15 and $10 respectively:
http://www.manuals-in-pdf.com/index.php?main_page=advanced_search_result&keyword=Technics+SU-X501+manual&forward=plist
I am not affiliated with this or any other site that charges for manuals, tips, advice, etc.; and only offer it as a source for the info you're looking for. I hope this helps!