Lenovo ThinkPad T520i Hardware Maintenance Manual - Page 108
Removal steps of system board and magnesium structure frame, When installing, Removal steps of MDC
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Removal steps of system board and magnesium structure frame 2 4 2 3 1 1 Step 1 2 3 Screw (quantity) Hex stud, nylon-coated (2) M2 × 7 mm, wafer-head, nylon-coated (2) M2 × 3 mm, wafer-head, nylon-coated (1) Color Silver Silver Silver Torque 0.392 Nm (4.0 kgfcm) 0.181 Nm (1.85 kgfcm) 0.181 Nm (1.85 kgfcm) When installing When you replace the system board, attach thermal rubbers as shown in this figure. Depending on the models you are servicing, the number of thermal rubbers are different. Check the thermal rubbers on the old system board, and find duplicates of them in the new FRU package and apply them to the new system board. a b c d Removal steps of MDC Note: Only some selected models are installed with a MDC. 102 Hardware Maintenance Manual