Lenovo Yoga Book YB1-X91L Hardware Maintenance Manual page 46

Lenovo YOGA BOOK with Windows® Hardware Maintenance Manual
Figure 7. Removal steps of sub board (continued)
Use tweezers to gently pull the cable heads from the interfaces of the 4 sub
boards, and slowly guide the cables out the narrow cable pathways. Be careful
not to damage the cables.
Disconnect the ANT FPC and MAIN SB interface, pulling the FPC out of the
interface. Use a screwdriver to remove the silver screws of the 4 sub boards and
respectively dismantle the 4 sub boards.
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