Request for Node N100 exploded view or help in disassembling the unit

Hello there, I just purchased a second hand Node N100 unit. So far I have only been able to try its analog out RCA connectors and it does work on RCA analog output, however, it seems, the otpical out port has been tampered with, and it's broken. I would need to replace it and I have someone to do it for me, but I would need an exploded view of the unit to see how it can be disassembled, or someone's expert instructions on how to do it properly. It's way over the warranty period so I'm aware that I will have the repair done fully at my own risk. I would appreciate it if someone could contribute to my request in a useful and valuable manner, I certainly can do without the occasional bashing or disapproval. Thank you very much. Gabor