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Please
visit the Home
page for new developments
Instructions
on how to actually unlock your ThinkPad (TP) are in the User's
Guides
EEPROM
Location and Type
X200 EEPROM you treat it as a 24RF08
Locating the X200 connection points
Switch the X200 OFF.
You should have already downloaded the
hardware Maintenance Manual for your ThinkPad model, if you have not done so
use the link below to download it now,
Download
the Hardware Maintenance Manual (HMM) for your TP model
The links above are to the 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.
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.
I receive many emails asking about the GND
connection, in reality it is very simple, you use some kind of a clip so that
you don't have to hold it in place, you DON'T HAVE 3 HANDS and there are 3
connections, GND SDA and SCL, so have a clip for GND, then you can use the 2
hands YOU DO HAVE to hold your SDA and SCL probes in place.
Almost any large piece of metal or the screws
for the external connectors of any ThinkPad are a good GND connecting point.
Anyway a picture is worth a thousand words
Click
here for pictures of GND Connections
Once
you have taken care of the GND connection.
You
push the sharp probes onto SCL SDA
or use clips, this is the reason you may need 2 persons, not enough hands to
hold the probes and run the software.
Keep things from electrically shorting out, later you will
need to plug in the AC adaptor and switch ON the TP, then you will need to
hold 2 probes in place to the SCL and SDA points on the system board.
See my page on Options
for Clips and Probes including making your own probes.
This page ONLY describes how to connect the
KeyMaker Interface to the EEPROM.
The instructions on how to Recover or clear
a Supervisor password are in The "User's
Guides" click here
Assembling your TP - AFTER - you have finished.
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.
