DVD not rotating inside music system

I have Philips FWD792 Hi-fi music system. From last few days my music system, not playing any DVD and give No-disc error.

So, i opened the top of hi-fi system and watch that player picking the DVD but not able to rotate, so i gave the little push to DVD and that start playing the DVD. Now, every time I have to give a little push to play a DVD, i also cleaned the player with 2 heads lens cleaning dvd.

Please suggest, what can be done or required some part change.