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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
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.
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 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.
GND connection is the metal part of the 2 arms which
normally hold the Memory modules in place.
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.
Disclaimer
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.
If you have any questions, email Joe at
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