Introduction
Based on lenovo_legion_9_16irx9_hmm.pdf "Hardware Maintenance Manual" from https://pcsupport.lenovo.com/si/en/produ...
What you need
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Flip the computer over to access the screws on the bottom.
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Remove 8 black, 7mm PH0 screws (M2 x L7).
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Note: Virtually all the other screws for this computer are PH1 screws which may get stripped when using a smaller screwdriver, but these screws require a Philips PH0 driver.
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Pry up the clips/latches and then remove the lower case. Start at the front (four clips), then sides (three clips each side) and back (four clips) - there is also one clip in the middle of the case.
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Remove the system board mylar.
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Note: Retain the system board mylar and reuse it when reassembling the computer. Replace the system board mylar only if it is damaged.
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(1) Peel off the thermal DIMM plate tape from the system board.
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(2-3) Lift flap and disconnect the I/O board cable from the system board.
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(2-3) Lift flap and disconnect the audio FPC cable from the system board.
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(2-3) Lift flap and disconnect the hinge cap lightingbar cable from the system board.
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Note: my machine did not have the DIMM plate tape or the cable in the upper right.
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Disconnect the three fan cables from the system board by lifting away from board.
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Remove 7 black 6mm PH1 screws (M2 x L6) holding the fans.
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Note: Virtually all the screws for this computer are PH1 screws which may get stripped if you use a smaller screwdriver.
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Remove tape from fans - possibly using gentle heat
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Remove the fans - be careful of Wi-Fi antenna cables around top left fan and speaker cable around small bottom right fan.
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To reassemble your device, follow these instructions in reverse order.
