[ron3003]

The clear plastic screen protector is just stuck on around the edge with thin double sided sticky tape, put your fingernail under a corner and peel it off.
As it looks like you have already removed the screws from the end plates you should now be able to push the insides of the player up out of the tube.
If the chips on your pcb are now visible note down the numbers. If you can only see the back of the pcb and chips are not visible then you need to then unscrew the printed circuit boards from the plastic frame holding them, should be 4 screws.
The display screen will be attached to the main PCB with sticky backed foam, peel it off and fold it back carefully taking care not to damage the ribbon cable which will then reveal the cpu and memory chips for identification.