Use A Golden Key U1 Tool To Flash-Write Key Id Information; Remove The Speakers; Remove The Lcd Unit; Remove The System Board - Lenovo Yoga Slim 7 Carbon Hardware Maintenance Manual

Go to
https://support.lenovo.com/partslookup
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 Golden Key U1 tool.

Remove the speakers

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 30
"Remove the system board" on page 38
Step 1. Uncover the keyboard cable then release the speaker cable from the cable guide. Remove the four
screws then remove the speakers.
Figure 19. Remove the speakers
Screw specifications
M2.0 x L2.3
Go to https://support.lenovo.com/partslookup
part:
Speakers

Remove the LCD unit

Make sure the following FRUs (CRUs) have been removed.
"Remove the lower case" on page 30
"Remove the solid-state drive (SSD) " on page 32
40
Hardware Maintenance Manual
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for detailed instructions on how to create
Number of screws
4
to look up the Lenovo part number of the following replacement