Service Forum

fmriguy · Posted: Thu Feb 15, 2007 7:55 pm Post subject: An R31 with 93C46?

Hi, first of all I'd like to thank allservice for this excellent forum, which i've found immensely helpful. Recently I decided to dismantle my Thinkpad R31 to finally remove that pesky supervisor password. With the service manual in front of me and the allservice tutorial I was all set.

However, after looking everywhere for the 24RF08 chip and not finding it, I happened upon the ATMEL 93C46! I was under the impression that all R31's had the 24RF08. Is it possible for a board to have both chips?

So now I'm a bit confused. Do I go through the procedure with the 93C46 chip (unsolder, etc.) as I would with a 700 series TP? Or am I just blind and I haven't found the right chip...

Thanks in advance!

bob · Posted: Thu Feb 15, 2007 9:28 pm Post subject:

Hi,

Thanks for your kindness.

R31 has 24RF08, it is positioned near the PCI bridge chip (Texas Instruments) . 93C46 is used for NIC settings.

http://www.allservice.ro/forum/images/ibm_r31.gif

fmriguy · Posted: Thu Feb 15, 2007 9:57 pm Post subject:

Ah, thank you! You can't imagine how long i was searching around with a magnifying glass and flashlight. A picture is worth a thousand words. Thanks again.