Introduction
Based on lenovo_legion_9_16irx9_hmm.pdf "Hardware Maintenance Manual" from https://pcsupport.lenovo.com/si/en/produ... also shown below as a "Featured Document". See page 44.
What you need
Featured Document
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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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Almost anything that is done with a computer is safer if the battery is disconnected, so it is good to do that now.
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Disconnect the battery pack cable from the system board using fingernails or a pry bar. Use your fingernails to pull the connector to unplug it. Do not pull the cable. It can be very tight. I used a 3.5 mm flathead screwdriver to carefully push the side plastic edges down towards the battery. Do not knock any of the components on the board.
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Remove 6 black 4mm PH1 screws (M2 x L4). The lower right screw is close to a magnet that may pull it from where you want it to go - tweezers may be necessary. The Hardware Maintenance Manual does not show the bottom middle screw.
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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 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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Remove 4 black PH1 screws (M2 x L4) and then remove the SSD shielding.
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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 2 silver 2mm PH1 screws (M2 x L2), one for each SSD.
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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 each SSD by pulling it away from the slot.
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Note: it may be important to replace the SSDs into the same slot, so label them in some manner - perhaps "T" for the top one and "B" for the bottom one.
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Detach the main and auxiliary antenna cable connectors. Note which colour cable is connected to each post - the photographed board has a grey cable connected to the top post (marked as "#1 Aux" with a white triangle on the Wi-Fi card) and a black cable connected to the bottom post (marked as "#2 Main" with a black triangle on the Wi-Fi card).
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Remove 1 silver 2mm PH1 screw (M2 x L2).
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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 the Wi-Fi card by pulling it away from the slot.
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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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Remove 3 black 4mm PH1 screws (M2 x L4) screws
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Remove 2 black 6mm PH1 screws (M2 x L4) screws
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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 the flaps of tape holding the antenna wires to the board.
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Remove the system board module carefully.
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NOTE - the CPU is cooled using conductive "Liquid Metal" - if it gets on the circuit board in the wrong places it can permanently damage the board. Take extreme caution.
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Position the board over so that the heat sink tubes are on the top
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Loosen 6 black PH1 screws (they are captured and will not come out completely)
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Remove 2 black 6mm screws (M2 x L6)
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Remove 1 black 4mm screw (M2 x L4)
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Remove the heat sink and deal with the "Liquid Metal" thermal material on the CPU.
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To reassemble your device, follow these instructions in reverse order.
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Attached Documents
