X61 X61s X61t

 

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Instructions on how to actually unlock your ThinkPad (TP) are in the User's Guides

EEPROM Location and Type

X61 X61s and X61t EEPROM you treat it as a 24RF08

Locating the X61 connection points

Switch the X61 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.

SCROLL DOWN this page to see ALTERNATE connection points on different versions of the System Board

There are different versions of the System Board.

Some versions allow access by simply removing the keyboard.

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 above to reveal the location of the PS08 Eeprom 

Do not use the GND connection point shown below, it is much easier to use a clip connected to any of the large metal covers or the Heatsink, more on GND connection at the end of this page

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

All the eeprom images are on this page are oriented the same way

If your X61 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.

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.

A different System board, ATMEL 8356908 - no need to butcher the black plastic as it can be easily lifted up out of the way, stick the black plastic back down when you are done.

ATMEL 8356908

The blue object is NOT part of the X60s System Board, was used to prop up the board during scan

 

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

Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU. Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU. Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU. Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU. Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU. Basically you make the System board functional outside of it's case [IF you had to remove the System Board] which includes mounting heat sink and fan on CPU.

Once you have taken care of the GND connection.

You 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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