I have just purchased an AIWA 3 cd changer w/tuner, dual tape deck and aux plug from the Goodwill. It has no manual and I am need of one in order to know how to operate. On the reverse casing is stamped model CXNAJ300U made in December 2000. Super T-Bass BBE. On the front is stamped NSX-AJ300 Digital Audio System. Can you help with the operation before Friday 2/27. I can return it if not working. Thank you.