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Go to
https://support.lenovo.com/partslookup
replacement parts:
System board
I/O board cable
Use a Golden Key U1 tool to flash-write key id information
After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to
start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID
to the new system board.
The Golden Key U1 tool is prepared by running the U1 Update software on a FAT32-formatted USB thumb
drive. Go to
https://support.lenovo.com/us/en/solutions/ht102004
and use a Golden Key U1 tool.
Remove the LCD module
Make sure the following FRU (CRU) has been removed.
"Remove the lower case" on page 26
Step 1.
Disconnect the battery pack cable from the system board.
Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable.
Step 2.
Disconnect the EDP cable and the camera cable from the system board. Detach the main and
auxiliary antenna cable connectors and then release the cables from the cable guide.
Figure 25. Disconnect the antenna cables, EDP cable and camera cable
Step 3.
Rotate the LCD module to an angle of more than 90 degrees and place the computer on a flat
surface as shown. Remove four screws and then remove the LCD module.
38
Hardware Maintenance Manual
to look up the Lenovo part numbers of the following
for detailed instructions on how to create
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