Lenovo E50-05 Series, Руководство по техническому обслуживанию аппаратной части

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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 front bezel. Refer to “Removing the front bezel”.
Step 6. Remove the memory module. Refer to “Replacing a memory module”.
Step 7. Remove the heat-sink assembly. Refer to “Replacing the heat-sink assembly”.
Step 8. Remove the graphic card. Refer to “Replacing the graphic card”.
Step 9. Remove the system fan. Refer to “Replacing the system fan”.
Step 10. Disconnect the all cables from the connectors on motherboard.
Step 11. Remove the 5 screws that secure the motherboard to the chassis.
Step 12. Lift up the motherboard to remove it.
Step 13. 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, heat-sink assembly to the new motherboard.
c. Connect the all cables to the new motherboard.
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Lenovo E50–05 Series Hardware Maintenance Manual