X200 EEPROM you treat it as a 24RF08

Locating the X200 connection points

Switch the X200 OFF.

You should have downloaded the hardware Maintenance Manual already, if you have not done so,

Click on the hyperlink below to download the PDF file containing the X200 Hardware Maintenance Manual, you will need to install Adobe Acrobat Reader to view the manual, Adobe Acrobat is FREE and can be obtained here -> Adobe Downloads once you have downloaded the files, close the browser window to return to this page.

Click here for ThinkPad X200 Hardware Maintence manual

It is best to Right Click on the PDF links then Save "Target as" that way you will have a copy of the PDF file on your PC.

Once you have your HMM search the manual for "Removing and replacing a FRU" then scroll down to Keyboard, follow the instructions in the manual to remove the screws underneath the X200 so that you can lift up the keyboard.

You need to access the 8 pin chip, a P24S08 eeprom which is located underneath the keyboard on the system board as illustrated below.

Lifting up the keyboard reveals the location of the P24S08 - arrow is pointing to it

Close up showing the P24S08 eeprom

Image rotated to match further instructions. GND SDA and SCL pins labelled

NOTE:  VCC is NOT connected, the ThinkPad supplies power to the eeprom later on we will switch on the TP to analyse the eeprom.

This eeprom image is oriented the same way as the last rotated photo above.

The photo below shows a 24RF08 EEPROM from a DIFFERENT MODEL ThinkPad with the Pomona clips attached to SCL and SDA pins.

See my page on Options for Clips and Probes including making your own probes.

Assembling your TP

You need to re-assemble your TP as you will have to have it switched ON and running to read the eeprom.

Follow the Hardware Maintenance Manual [FRU System Board], very carefully, double check screw type and size for each individual module.  Assemble the TP in the reverse order used to dismantle it.

If you have any questions, email Joe at