X32 system board power supply schematic / block diag needed

[jackmanon]

X32 is stone dead. Tracked power on system board through connector, fuse, pass transistor and to LM392 and three regulator transistors. Can't figure if LM392 is dead or being held off by some other circuit.

Anyone know where I can find a schematic, block diagram or circuit description?

[rkawakami]

Welcome to thinkpads.com!

Schematics are the "holy grail" as far as I'm concerned (and I don't mean that in the Monty Python sense either). I've looked around for them for my Thinkpad systems, even asking my boss who has some contacts with IBM technical people, and have come up empty. I would assume that they must exist somewhere but I've never seen anyone saying they have personally view one.

Best thing to do is try to identify some of the parts on the motherboard and document them like here:

T23 motherboard