Replacing The Motherboard - Lenovo H405 Hardware Maintenance Manual

Replacing the motherboard

9. To secure the microprocessor in the socket, close the microprocessor
retainer and lock it into position with the small handle.
10. Use a 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).
11. Fit the heatsink assembly back onto the system board.
12. Reconnect the disconnected cables to the system board.
13. Refer to the "Completing the installation".
To replace the motherboard:
1. Remove the computer cover. Refer to "Removing the computer cover".
2. Remove the heatsink assembly. Refer to "Replacing the heatsink
assembly".
3. Remove the memory module. Refer to "Replacing a memory module".
4. Remove the PCIE adapters. Refer to "Replacing a PCIE adapter".
5. Remove the CPU. Refer to "Replacing the CPU".
6. Remove the 6 screws that secure the motherboard to the chassis.
7. Remove all the cables from the motherboard.
Chapter 9. Replacing hardware
53