Replacing The Motherboard - Lenovo Legion Y720T Hardware Maintenance Manual

Replacing the motherboard

Note: For this procedure, it helps to lay the computer flat.
To replace the motherboard:
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to "Left and right view" and
"Rear view" for help with locating the various connectors.
Step 4. Remove the computer cover. Refer to "Removing the computer cover".
Step 5. Remove the memory module. Refer to "Replacing a memory module".
Step 6. Remove the microprocessor fan. Refer to "Replacing the microprocessor fan".
Step 7. Remove the heat-sink. Refer to "Replacing the heat-sink".
Step 8. Remove the graphic card. Refer to "Replacing a graphic card".
Step 9. Remove the Wi-Fi card. Refer to "Replacing the Wi-Fi card".
Step 10. Remove the CPU. Refer to "Replacing the CPU".
Step 11. Disconnect the all cables from the connectors on motherboard.
Step 12. Remove the 11 screws that secure the motherboard to the chassis.
Step 13. Slide then lift the motherboard out of the chassis to remove it.
Step 14. Install the new motherboard:
a. Line up the holes on the new motherboard with mounting holes on the chassis and secure it
with screws.
b. Reattach the memory module, Wi-Fi card, CPU, and the heat-sink to the new motherboard.
c. Connect the all cables to the new motherboard.
d. Attach the graphic card to the new motherboard.
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Lenovo Legion Y720T Hardware Maintenance Manual