Sony PS3 Repair Manual page 299

How to play/install to play PS2 backups on PS3
That's the hard part if you can believe it. Now you gotta bust open the PS3. Very easy to do and no
cutting or breaking involved. (If you need help with opening the up to the BluRay drive go here.)
Take the one bolt out on the side and slide the top off.
1.
take the rest of the screws out and take the second top off. This will expose the Blu-ray drive.
2.
The Blu-ray drive has 2 plug-ins that need to be unplugged. After that it comes out freely.
3.
A ribbon on the bottom
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