Try these:
-switch off the unit
-open the top cover
-spin the spindle motor to check whether it's spining action smooth or not.
-if the spindle motor is ok,gently push the lens away from the spindle motor
-switch on the unit
-the lens should travel towards the spindle motor
-after it"hit" the end,the lens should move upward and downward few times,a not very visible red light should be seen
-insert a good CD,
-check the motor would spin or not.
-if the motor start spining,check if any tiny red light shining on the bottom side of the CD(it can be on the top side too)
-some sort of hiss sound maybe heard when the unit trying to read the content of the CD
Try these steps and inform me about your result
