Remove The System Board - Lenovo Yoga C740 Series Hardware Maintenance Manual

Go to
https://support.lenovo.com/partslookup
part:
Solid-state drive

Remove the system board

Make sure the following FRU (or CRU) have been removed.
"Remove the lower case" on page 26
"Remove the battery pack" on page 27
"Remove the RTC battery" on page 28
"Remove the thermal module" on page 29
"Remove the I/O board with cable" on page 31
"Remove the WLAN card" on page 33
"Remove the solid-state drive" on page 35
Step 1. Disconnect cables connected to the system board.
Figure 19. Disconnect the cables
Step 2. Remove seven screws.
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Lenovo Yoga C740 series Hardware Maintenance Manual
to look up the Lenovo part number of the following replacement