DVD Player is not opening the tray

I am using this system for the last 3 years without any issues. After 1 month, I again reconnected with 3 speakers (Centre/FR and FL) alone and tried to use the Home Theatre. The Tuner for FM and AM are working fine. But in DVD mode, when I tried to open the tray, it is not opening at all both through Remote and Manually as well. I removed all the connections and reconnected with the 3 speakers again and tried the same thing. But the same problem exists.

Can anyone suggest me what I need to do now?