In the cd player there are few main things.One is lens,this lens is the thin glass part which reads the cd.If this lens is got dirty or cracked or faulty.Then it will not be able to read cd.The lens is one possibility.The other possibility is faulty motor.There is a motor which spins the cd in the player.If the motor is not working then cd will not spin on the lens and it will not read the cd as motor is just stuck and not working.Also as you mentioned that cd got jammed in the unit o you spin the gears.The gears are also spin by the motor.If the motor is getting jammed then this problem occurs.It has to be checked.In some cases its just basic cleaning inside the unit.But in some cases the parts are to be replaced.If lens is faulty then ccd lens assembly has to be replaced.If motor is faulty or weak then it has to be replaced.
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If only lens is faulty then cd will spin in the unit,so you will come to know that motor is working.But if no motor spin noise then its faulty motor causing the problem.---
These are few
possibilities of lens not working. But in most cases its dirty lens causing
this problem. SO open the tray by pressing the eject button, then unplug the
unit from main power outlet, by keeping the cd tray open. Then take
air blower and blow air in the unit. Please remove, if there is any
cd in the tray while blowing air. Just blow air for few minutes. Then take a
dry tissue and clean the cd placing tray externally and then reconnect the
power and see, if that is helping or not. If the problem is
same as before, then disassemble the unit and clean the lens manually by hand
using dry tissue paper and then see if its helping. But take care while
cleaning the lens with dry tissue you doesn't apply too much pressure on lens
or any other parts. Also before removing any screw to disassemble the unit.
Take a marker with you ready. Just mark the position of parts and screws before
removing. If you have a cell phone with web cam in it then take a photo of the
internal parts before moving any parts. Disassembly is not very hard but
reassembling is not easy. So this pictures and marks with help you for
reassembly. ----------But if lens is cracked internally then the lens
assembly has to be replaced. You can get it replaced from local cd /dvd
player repair center. They have these parts with them. --------------- This
should help. Thanks. Helpmech.
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