Marantz Cd player SA15S2

Hi
My Marantz cd player has stopped working.
Symptoms;
1. When powered the player
The display says power on but does not go beyond to indicate the no disc.
2. The cd tray has stuck.
I opened the top cover and released the tray by carefully rotating the gears.
When I did that the tray mechanism become very slack and indicates no resistance when I push the tray in carefully.
3. Still the power on position did not go beyond the no power indication.
Anyone who could explain to me the reason for the above issue and how I could get over this issue.

Regards

Mohan