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Screw specifications
M2 x L3.5
M2 x L2
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 unit
Make sure the following FRU (CRU) has been removed.
"Remove the lower case" on page 60
"Remove the fan" on page 65
"Remove the heat sink" on page 64
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.
Remove a piece of tape.
Figure 77. Remove a piece of tape
Step 3.
Disconnect LCD cable connected to the system board.
76
Hardware Maintenance Manual
Number of screws
2
1
to look up the Lenovo part numbers of the following
for detailed instructions on how to create
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