Figure 2: CPU Motherboard Connection Labels
9. Remove the six Torx screws that fasten the motherboard to the standoffs at the rear of the CPU bay and set them aside for later use. The
location of each screw is shown in Figure 3.
Figure 3: CPU Motherboard Screw Locations
Note:
Leave the standoffs fastened to the rear of the CPU bay. You will attach the replacement motherboard to these same standoffs.
10. Disconnect the J1 header connector on the CPU motherboard from the P1 header connector on the CPU switcher card to completely detach
the CPU motherboard.
11. Set the board aside. You will reinstall it after the new CPU switcher card is installed.
Remove the Existing CPU Switcher Card
1. Label and remove the two connectors connected to the CPU switcher card. Label the 18-position plug, located towards the top of the card,
“P3”. Label the 14-position plug closer to the bottom of the card “P4”. Refer to Figure 1 for the locations of these connections.
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579-272 Rev. C
CPU Switcher Card and Class B Motherboard Replacement Instructions
