Lenovo ThinkPad Hardware Maintenance Manual page 94

P1 gen 4 and x1 extreme gen 4

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For WWAN model, when installing:

• Ensure that you install the buzzer at the backside of the system board.

• Ensure that you install the PCH mylar, memory module mylars, coin cell battery mylar and WWAN gasket

as shown below.

• Ensure that you install the WWAN thermal pad and M.2 solid-state drive thermal pad as shown below and

then remove the dust protection film of the thermal pad installed.

P1 Gen 4 and X1 Extreme Gen 4 Hardware Maintenance Manual

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