7. Slide the system board toward the front until it can be lifted out of the
chassis.
8. Remove the heat sink and microprocessor from the failing system board and
install them on the new system board. See “Replacing the microprocessor” on
page 167.
9. Remove the memory modules from the failing system board and install them
into the same position on the new system board. See “Replacing a memory
module” on page 157.
10. Install a new retention module or move the retention module from the failing
system board to the new system board.
11. The failing system board must be returned with a microprocessor socket cover
to protect the pins during shipping and handling. Install the microprocessor
socket cover removed from the new system board on the failing system board.
Toinstall the microprocessor socket cover:
a. Make sure the microprocessor has been removed fromthe microprocessor
socket, and then close the microprocessor retainer and lock it into position
with the small handle.
b. Insert the tabs 1 of the socket cover into the hinged side of the socket,
and then press the other side of the socket cover downward until the tabs
2 snap into position.
164 HardwareMaintenance Manual