Figure 30. Remove five screws and then remove the system board
Screw specifications
M2 x L2.8
M2 x L3.5
Go to
https://support.lenovo.com/partslookup
replacement parts:
System board
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
http://support.lenovo.com/us/en/solutions/HT506954
and use a Golden Key U1 tool.
Remove the LCD module
Make sure the following FRUs (CRUs) have been removed.
"Remove the lower case" on page 38
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 from the system board.
50
Hardware Maintenance Manual
Number of screws
2
3
to look up the Lenovo part numbers of the following
for detailed instructions on how to create