One should firstly remove the PSU: Disconnect the drive power cable as described above. Unscrew the 5 (3-P1 2-P2) PSU mounting screws. Now leaving the power cables attached, lift the PSU off the power baseboard PCB pins and move over slightly to access the baseboard drive cable end ZIF. Release the ZIF latch and slide the entire (drive and ribbon) strait away from the baseboard ZIF to disconnect.
After the complete drive/ribbon removal, you can carefully remove the restraining tape on the bottom of the drive to release the ribbon ZIF, then remove the 24 pin ribbon from the drive logic PCB.
Install in reverse order making sure to add new tape to secure the ribbon to the drive.
The version 2 systems baseboard PCB started switching to the new narrow 24 pin ZIF header/ribbon and Blu-Ray drive connection.
You should not attempt to detach the taped ribbon cable from the drive end first as described above for the older wide 60 pin ribbons. You must remove the drive and ribbon as one unit to protect the fragile ZIF sockets.
The slimmer fragile ribbon is taped to the drive housing to afford a more secure ZIF connection. The opposite base connection is slightly under the PSU.
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