In step [3a] and [3b], unplug the jacks by using the removal tool antenna RF connector (part number: 08K7159) or pick the connectors with your fingers and gently unplug them in direction of the arrow.
When installing: Plug the red cable [3a] into the jack labeled MAIN, and the blue cable [3b] into the jack labeled AUX on the card.
M2 × 3 mm, wafer-head, nylon-coated (2)
0.181 Nm (1.85 kgfcm)
Some models of ThinkPad Edge 14", Edge 15", E40, and E50 might have the SIM card that the customer has been installed. If you need to replace the system board in those models, remove the SIM card as follows:
After you finish the servicing, make sure that you insert the card back into the slot firmly.