Lenovo ThinkCentre A57, Hardware Maintenance Manual

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12. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into position
with the small handle.
13. Use the thermal grease syringe to place five drops of grease on the top of the microprocessor. Each drop
of grease should be 0.03ml (3 tick marks on the grease syringe).
14. Install the heat sink and fan assembly on the system board.
15. Connect the heat sink and fan assembly cable to the system board. See the system board illustration
for your machine type at “System board connectors” on page 70.
16. Position the fan duct on the heat sink fan.
17. Go to “Completing the FRU replacement” on page 88.
Replacing the hard disk drive
Important
When a new hard disk drive is installed, a set of Product Recovery discs might be required. The set of
Product Recovery discs enable the contents of the hard disk to be restored to the same state as when the
computer was originally shipped from the factory. For more information on recovering factory-installed
software, refer to "Recovering Software" in the
User Guide .
This procedure describes how to remove and replace the hard disk drive.
1. Remove the cover. See “Removing the cover” on page 71.
2. Remove the drive bay assembly. See “Accessing system board components and drives” on page 72.
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ThinkCentre Hardware Maintenance Manual