R52

 

Home
Up
Read this First
KeyMaker X1
KeyMaker LCD
Buy Now
Delivery times
Firmware Update
Functionality Upgrade
Damaged Board
Safety Precautions
User's Guides
Customer Feedback
Reference Docs
New Page 3
Up ] Your TP Model ] TP HM Manuals ] Other Models ] Making probes ] GND Connection ] Soldering to EEPROM ] 390 390E 390X ] 600 ] 600e ] 600x ] A20 A21 A22 m/p ] A30 A30p A31 A31p ] G40 G41 ] L412 ] L512 ] L520 ] R30 ] R31 ] R32 ] R40 ] R400 ] R50 and R51 ] R51e ] [ R52 ] R60 ] R61 R61i ] R500 ] SL410 ] SL510 ] T20 T21 T22 T23 ] T30 ] T40/p T41/p T42/p ] T400 ] T400s ] T410 ] T410S ] T420 ] T43 T43p ] T430 ] T500 ] T510 ] T520 ] T60 T60p ] T61 T61p ] W500 ] W510 W520 W530 ] X1 Carbon ] X100e ] X130e ] X200 ] X200T ] X201 Tablet ] X220 and X230 ] X30 ] X31 ] X300 ] X301 ] X40 and X41 ] X60 X60s ] X60Tablet ] X61 X61s X61t ] Z60 ] Z60m ] Z61 ] Z61m ] Z61T ]

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

R52 EEPROM you treat it as LSI
---------R52 Password recovery procedure ---------- 

The following steps requires CARE read all the information first, before you do ANYTHING, get a feel for the overall procedure, ONLY THEN start to follow the procedure.

 

Locating the R52 connection points

Switch the R52 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.

Easy to access connection points - The Memory bay underneath the R52 

- see alternate connection points further down this page -

Your R52 may look like the image below connection points on R52 Memory Bay underneath the R52

- see alternate connection points further down this page -

A more difficult to access connection point

Once you have your HMM search the manual for "Removing and replacing a FRU" then scroll down to 1050 Keyboard, it's on Page 82 of the manual,  follow the instructions in the manual to lift up the keyboard, leave it plugged in just move it forward toward you to reveal the connection points.

You may have to remove the DIMM Standard, see page 87 of the manual 1070 DIMM (standard),

Under the DIMM you should now be able to see the LSI, see photos below.

The connections we will use are near the LSI, just under the RAM module if one is fitted.

You will need to have some RAM in the R52 for use later when we switch it ON, no don't switch it ON now, later OK.

If there is no RAM in the other DIMM slot, the one underneath the R52, then you will need to remove the RAM from above and install it in the optional DIMM socket underneath the R52.

That other DIMM socket is lustrated on page 81 of the manual, 1040 DIMM (optional), undo the single screw on the cover to gain access.

If there is already RAM installed in the other DIMM socket underneath the R52 then you can just leave it there.

If there is no RAM installed in the other DIMM socket underneath the R52 then remove the RAM from under the keyboard and install it in the DIMM socket underneath the R52, later when all the work is done reverse the procedure.

The RAM is held by 2 clips one on each side, page 81 of the manual, 1040 DIMM (optional) illustrates how to remove replace DIMM

Use one finer nail on the end of each clip to pull the clip aside

DON'T BEND THEM, just pull it out sideways just enough so the RAM pops up, then you can remove it. 

You must pull both clips at the same time, 

use one finger from one hand to pull on one clip
and a finger from your other hand to pull on the other clip AT THE SAME TIME
 and the RAM will pop up ready to be removed.

To install RAM into a DIMM socket start with the RAM at angle of 45 degrees to the board [note the RAM can only go in one way there is a key slot that is not in the middle, it only fits one way].

Holding the RAM at 45 degrees to the board insert the RAM into the socket, make sure it is in all the way, if it wont go in don't force it, turn it over till the key slot matches the socket. Hold it into the socket and slowly fold it down flat until the two clips snap over it to lock it in place.

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

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.

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

Hit Counter

Home ] Up ] Your TP Model ] TP HM Manuals ] Other Models ] Making probes ] GND Connection ] Soldering to EEPROM ] 390 390E 390X ] 600 ] 600e ] 600x ] A20 A21 A22 m/p ] A30 A30p A31 A31p ] G40 G41 ] L412 ] L512 ] L520 ] R30 ] R31 ] R32 ] R40 ] R400 ] R50 and R51 ] R51e ] [ R52 ] R60 ] R61 R61i ] R500 ] SL410 ] SL510 ] T20 T21 T22 T23 ] T30 ] T40/p T41/p T42/p ] T400 ] T400s ] T410 ] T410S ] T420 ] T43 T43p ] T430 ] T500 ] T510 ] T520 ] T60 T60p ] T61 T61p ] W500 ] W510 W520 W530 ] X1 Carbon ] X100e ] X130e ] X200 ] X200T ] X201 Tablet ] X220 and X230 ] X30 ] X31 ] X300 ] X301 ] X40 and X41 ] X60 X60s ] X60Tablet ] X61 X61s X61t ] Z60 ] Z60m ] Z61 ] Z61m ] Z61T ]