[ltp] What is a Planar Board?

[James Knott]

Greg Meyer wrote:
> I had some trouble with the USB ports on a T41 so I sent the machine in for 
> service, and it was returned to me a note that said the planar board was 
> replaced.  The service manual makes no reference to a planar board.  I have 
> hunted on the net and based on what I see I think it is the system board, but 
> I'm not sure.  Can someone here confirm that for me?

The "planar" generally refers to the main board or mother board.