Welcome to our site , I will be happy to assist you.
It looks like the memory need to be cleared. Remove all the discs,Power off the system. Disconnect the power cable and wait for 10 minutes. Plug the system back and load one cd and see if it will play.
OK try to powere off without removing the cd and let me know the results
I think we have a problem that requires taking the system to a local repair shop for evaluation. From my experience, the TOC, means the system is firmware is stuck trying to match the content of the CD on the play tray and what is on the memory. Unfortunately, it looks like the laser cannot read what is on the CD.
According to your troubleshoot, you were able to take the cover, can you verify that the disc is loaded right on the play mechanism.
See the link above for the system manual.
Pg 35 explains how to reset the system which is to disconnect the power cord.
Hello my name is***** do not rate until we are finished. I look forward to assisting and am very sorry to hear that you are having this problem. A cold reboot on this model is a power cycle. However the No Disc error usually occurs when discs can not be read by the machine. If possible can you put in only a single CD and see what it does?