Lenovo IdeaCentre B520 - Manual (Page 40)

Hardware Maintenance Manual
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4. Remove the 4 screws that secure the hard disk drive to the disk bay
and slide the defective hard disk drive out of the bay.
5. Install the new hard disk drive as follows:
(1) Slide the new hard disk drive into the drive bay.
(2) Secure the new hard disk drive to the drive bay using the 4 screws.
6. Slide the hard disk drive bay back into position.
7. Secure the hard disk drive bay to the chassis with the remaining screw.
8. Slide the computer cover back into position.
Replacing the bluetooth module
To replace the bluetooth module:
1. Remove the back deco. Refer to “Removing the back deco”.
2. Push the pin that secures the bluetooth module gently to remove it.
3. Lift up the bluetooth module.