Keyboard removal and installation - ThinkPad T420s, T420si

Disable system Battery in BIOS before Servicing or installing a part


Keyboard removal instructions

For access, remove this FRUs in order:

Note: Remove the screws [1] .

Please perform the following steps as shown in the pictures below.


StepScrew (quantity)ColorTorque
1M2 × 5 mm, wafer-head, nylon-coated (2)Black0.181 Nm (1.85 kgfcm)


StepScrew (quantity)ColorTorque
2M2 × 5 mm, flat-head, nylon-coated (2)Black0.181 Nm (1.85 kgfcm)

Slightly press the keyboard and slide it a little bit forward, in the direction shown by arrow [3] , to detach the front edge of the keyboard from the frame. Then, lift up the keyboard in the direction shown by arrow [4] .


Lift the keyboard a little in the direction shown by arrow [5] , and then detach the connector [6].



Keyboard installation instructions

When installing the keyboard, do the following

  1. Attach the keyboard connector.77296_keyboard4.jpg

  2. Attach the keyboard so that the keyboard edge a is under the frame as shown in the following figure.

  3. Gently press the keys with your palms and slightly slide the keyboard toward you until it snaps into position.

  4. Secure the keyboard by tightening the screws from the bottom side of the computer.
Purchase parts online

If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Country Availability
Document ID : PD013298
Legacy Document ID : MIGR-77296
Last Updated :
Copyright © Lenovo 2013, all rights reserved
Was this page helpful to you?YesNo

Select Task
Drivers & Software  
Guides & Manuals  
Diagnose & Fix  
Warranty & Services  

Driver Matrix
KnowledgeBase Featured Articles
Community KnowledgeBase
Community Forums