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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 Goldern Key U1 tool.
Remove the coin-cell battery holder, power board and cable
Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 28
"Remove the coin-cell battery" on page 30
"Remove the M.2 2280 solid-state drive (for selected models)" on page 31
"Remove the M.2 2242 solid-state drive and bracket (for selected models)" on page 33
"Remove the Wi-Fi card" on page 35
"Remove the thermal module" on page 37
"Remove the system board" on page 44
Step 1.
Remove the antennas from the hooks. Then, disconnect the power board cable from the USB
board.
Figure 32. Remove the antennas from the hooks and disconnect the power board cable
Step 2.
Remove three screws. Then, remove the coin-cell battery holder and power board with cable.
46
Yoga 7 (14", 7) and Yoga 7i (14", 7) Hardware Maintenance Manual
for detailed instructions on how to create
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