visit the Home page
for new developments
on how to actually unlock your ThinkPad (TP) are in the User's
Location and Type
X60 EEPROM you treat it as
Locating the X60 connection points
Switch the X60 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,
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.
SCROLL DOWN this page to see ALTERNATE connection points on different
versions of the System Board
There are different versions of the System
Some versions allow access by simply removing
Others require completely dismantling to access
the connections on the underside of the System Board.
Review the connection points on this page
BEFORE deciding how much dismantling you need to do.
Once you have your HMM search the manual for
"Removing and replacing a FRU"
Scroll down to the section on Keyboard, remove
the keyboard and the top frame around the keyboard.
Remove the module in the middle of the image below to reveal
the location of the Eeprom
With the module removed you can see the Eeprom
Below is a close up of the Eeprom with the 3 connection points
labelled, the image has been rotated the front of the X61 is at the top of the
VCC is NOT connected, the ThinkPad
supplies power to the eeprom later on we will switch on the TP to analyse
All the eeprom images are on this page are oriented the
If you TP does not match the images above
then continue on this page
In the Hardware Maintenance manual scroll
down to System Board, follow the
instructions in the manual to remove all the other FRUs to gain access to and
remove the System Board.
The blue object is NOT part of the X60s
System Board, was used to prop up the board during scan
If you have this System Board, You DO NOT
need to remove it from the base, once you lift up the Keyboard, you just
remove the single module covering the connection points.
Connection points for SCL and SDA
With the TP switched OFF, using
strong excellent lighting, carefully using a magnifying glass check the SDA and
SCL connection points on the System board.
If there is any corrosion or
coating over the SDA and SCL connection points - TP switched OFF, no power going
to TP, VERY GENTLY scrape away the corrosion and or coating from the SDA and SCL
Another version of the X60 System Board
You need to access the pads of the ATMEL
8356908 chip illustrated below.
Note: SCL is the 3rd pin back from right hand the end,
SCL pin is marked RED in the photo below.
Another X60 System Board
8356908 chip illustrated below, you DO NOT cut the black plastic cover as was
done here, simply lift it up and stick it back down when finished.
Close up of ATMEL
8356908 chip showing connection points.
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
here for pictures of GND Connections
you make the System board functional outside of it's case which includes
mounting heat sink and fan on CPU.
you have taken care of the GND connection.
push the sharp probes onto SCL SDA , this is the reason you need 2
persons, not enough hands to hold the probes and run the software.
This is not easy, you will need to have the Keyboard [and
optionally the LCD] plugged into the system board in such a way that none touch
any contacts on the system board, use paper as an insulator to 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.
If you have any questions, email Joe at
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