Remove The Thermal Module - Lenovo Yoga Pro 9i Maintenance Manual

"Remove the thermal module" on page 32
Step 1. Remove three screws and then open the hinge.
Figure 17. Remove three screws and open the hinge
Screw specifications
M2.5 x L4.3
Step 2. Disconnect cables connected to the system board.
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Hardware Maintenance Manual
Number of screws
3