Computer optical drive tray cannot eject the card owner, how to Do

Today my Computer DVD Recorder CD drive tray can not eject, must be forcibly dragged out by hand, but does not affect burning, what is the reason? I asked the technician of our company.

Their answer: This may be because the belt in the DVD burner is loose (or it may be a gear slip, however, the situation of the belt problems accounted for the majority, because the burner tray in and out of the internal motor through a belt to drive the plastic gear rotation and achieve, if within the scope of the warranty, please get the merchants there to change the belt, If you have passed the warranty period, you can disassemble the burner open it can see the belt, you can remove a belt from the old CD-ROM, or the belt removed, iron in the pulley with a ring of groove, and then the belt sleeve up, which can increase the friction between pulley and belt, can generally solve the problem.