The KB9012 Embedded Controller contains internal flash memory, and the motherboard features an SPI BIOS chip (usually an 8-pin Winbond or Macronix IC). If +3VALW is present but the board refuses to trigger, the schematic helps identify the SPI communication lines ( SPI_CS# , SPI_CLK , SPI_MISO , SPI_MOSI ) to check for activity with an oscilloscope before reflashing the chips. Short Circuits on the +3VALW/+5VALW Rails
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Lm495 Mb 11269-2 Schematic-- Download