From the IBM site.
ThinkWiki
How to carry your laptop so you won't break it. Evidence strongly suggests two things contribute to the non-accidental death of Thinkpads: carrying them from the front and overheating. Here's an illustration of how and how not to carry your laptop.
A/C adapter tester made out of a resistor and an LED.
Illustrated guide to key replacement.
IBM maintenance manuals.
