Lenovo 2808DKU, 28155YU, 28155XU manual Note The steps from, Step, Screw quantity, Color, Torque

Table 26. Removal steps of system board, fan assembly, and 34-mm ExpressCard slot frame (continued)

Note: The steps from			to	indicate the removal steps of fan assembly, and
those from	to	indicate the ones of 34-mm ExpressCard slot frame.

Step	Screw (quantity)	Color	Torque
	M2 ⋅ 3.5 mm, big-head, nylon-coated (3)	Black	0.167 Nm
			(1.7 kgfcm)

Turn the system board over, and then disconnect the fan assembly from the system board.

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120ThinkPad T400s Hardware Maintenance Manual