Wireless WAN card (for selected models)

The following information is only for the computer with user-installable modules. Ensure that you use only a Lenovo-authorized wireless module specifically tested for this computer model. Otherwise, the computer will generate an error-code beep sequence when you turn on the computer.

Prerequisite

Before you start, read Important safety information 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 for wireless-WAN card with two antenna cables

Disable the built-in battery. See Disable Fast Startup and the built-in battery.
Turn off the computer and disconnect the computer from ac power and all connected cables. Then, close the computer display.
Remove the base cover assembly. See Base cover assembly (for T490 and P43s only) or Base cover assembly (for T590 and P53s only).
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.
1. Hold the cable connector with your fingers and gently disconnect each cable from the wireless-WAN card 1. Then, remove the screw that secures the wireless-WAN card 2. The card is released from the secured position and pivots upward.
2. Carefully remove the wireless-WAN card out of the slot 3.
Install a new wireless-WAN card by doing the following:
1. Align the contact edge of the new wireless-WAN card with the key in the slot. Then, carefully insert the card into the slot at an angle of about 20 degrees 1. Pivot the card downward 2.
2. Install the screw to secure the wireless-WAN card in place 3. Connect the antenna cables to the card 4. Ensure that you connect the orange cable to the main connector on the card, and the blue cable to the auxiliary connector on the card.
Reinstall the base cover assembly.
Connect the ac power adapter and all disconnected cables to the computer.

Replacement procedure for wireless-WAN card with four antenna cables (for selected models of ThinkPad T490)

Disable the built-in battery. See Disable Fast Startup and the built-in battery.
Turn off the computer and disconnect the computer from ac power and all connected cables. Then, close the computer display.
Remove the base cover assembly. See Base cover assembly (for T490 and P43s only).
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.
1. Hold the cable connector with your fingers and gently disconnect each cable from the wireless-WAN card 1. Then, remove the screw that secures the wireless-WAN card 2. The card is released from the secured position and pivots upward.
2. Carefully remove the wireless-WAN card out of the slot 3.
Install a new wireless-WAN card by doing the following:
1. Align the contact edge of the new wireless-WAN card with the key in the slot. Then, carefully insert the card into the slot at an angle of about 20 degrees 1. Pivot the card downward 2.
2. Install the screw to secure the wireless-WAN card in place 3. Connect the antenna cables to the card 4. Ensure that you connect the orange cable to the main connector on the card, the blue cable to the auxiliary connector on the card, the white and grey cable to the M1 connector on the card, and the black and grey cable to the M2 connector on the card.
Reinstall the base cover assembly.
Connect the ac power adapter and all disconnected cables to the computer.