Use A Golden Key U1 Tool To Flash-Write Key Id Information; Remove The Lcd Module (For 14-Inch Models) - Lenovo IdeaPad Slim 3 Series Hardware Maintenance Manual

Figure 47. Remove six screws and the system board
Screw specifications
M2 × L2
M2 × L3.5
Go to https://support.lenovo.com/partslookup
replacement part:
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 Goldern Key U1 tool.
Remove the LCD module (for 14–inch models)
Make sure the following FRUs (CRUs) have been removed.
"Remove the lower case (for 14–inch models)" on page 28
Step 1. Disconnect the battery pack cable from the system board.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
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IdeaPad Slim 3 Series Hardware Maintenance Manual
Number of screws
3
3
to look up the Lenovo part numbers of the following
for detailed instructions on how to create