View Full Version : connection points for all eeprom IBM ThinkPad

05-11-2015, 09:04 AM
A2* Series you treat it as a 24RF08

Includes A20m A20p A21m A21p A22m A22p

Locating the A2* series connection points

Switch the A2* OFF.

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

Download the Hardware Maintenance Manual (HMM) for your TP model (http://www-307.ibm.com/pc/support/site.wss/MIGR-4PER6S.html)

The link above is to the IBM/Lenovo site, if it doesn't work, don't panic, it isn't broken, their site is shut down daily for maintenance and at those times they display spurious messages like the page you requested cannot be found, wait a good while and try again. (http://www-307.ibm.com/pc/support/site.wss/MIGR-4PER6S.html)

Using the HMM link above, once you select a model and are on the page that has the PDF HMM for that model, it is best to right click on the PDF HMM for your model then select Save Target AS, that way you will have the PDF HMM on your PC to refer to any time you need it.

Locating the eeprom

Follow the section in the A2* Hardware Maintenance Manual (http://www-307.ibm.com/pc/support/site.wss/MIGR-4PER6S.html) titled "FRU System Board" to dismantle your TP and gain access to the underside of the System Board where the 24RF08 eeprom is located.

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

ssembling 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.


I make no warranty that any of my information is correct, or safe, or does or does not breach any warranty clause, or anything else, it is up to you to decide if you will follow all or any of the instructions to recover the Supervisor Password from a TP. It is up to you to decide, I am not responsible for the results or for any consequential or incidental damages whatsoever.




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