Figure 21. Remove the I/O board cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
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
http://support.lenovo.com/us/en/solutions/HT506954 for detailed instructions on how to create
and use a Golden Key U1 tool.
Remove the speakers
Make sure the following FRUs (CRUs) have been removed.
“Remove the lower case” on page 28
“Remove the battery pack” on page 29
“Remove the solid-state drive (SSD)” on page 30
“Remove the Wi-Fi card” on page 31
“Remove the I/O board bracket” on page 32
“Remove the I/O board” on page 33
“Remove the heat sink” on page 34
“Remove the fan” on page 35
“Remove the I/O board” on page 33
“Remove the system board and the I/O board cable” on page 36
Step 1. Remove six screws then release the cables from the cable guide. Remove the speakers.
38
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