Lenovo 20NN001RUS User Manual page 59

Prerequisite
Before you start, read Appendix A "Important safety information" on page 65 and print the following
instructions.
Attention: Do not touch the contact edge of the wireless-WAN card. Otherwise the wireless-WAN card
might get damaged.
Replacement procedure
1. Disable the built-in battery. See "Disable Fast Startup and the built-in battery" on page 49.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn the computer over.
4. Remove the base cover assembly. See "Base cover assembly" on page 50.
5. Remove the wireless-WAN card by doing the following:
Note: A Mylar film might cover the wireless-WAN card. To access the wireless-WAN card, open the film
first.
a. Hold the cable connector with your fingers and gently disconnect each cable from the wireless-WAN
1
card . Then, remove the screw that secures the wireless-WAN card
the secured position and pivots upward.
b. Carefully remove the wireless-WAN card out of the slot
2
. The card is released from
3 .
Chapter 7
. 53
CRU replacement