820-2337-a

[Tara Laptops]

pls can anyone provide technical information for 820-2337-a board.
In all i have 4 boards. In 2 boards all lights, power supply , fans , graphic card fan gets on fine but on display.
In two boards nothing get on. when i press the diag led switch one orange led blinks for once.
Pls share the technical information. Also i find totally 4 bios. 1- U8700 , 2- UB301, 3-UC650, 4- UB201. Any idea what each does. Pls reply. Thanks

 

[2informaticos]

Mixing information from boards with different symptomps doesn't help at all.

As you already read on old threads, no information available at all for Mac Pro machines.
Apple never disclosed schematics for them.