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4. Install the DIMM straight down into the connector until the retaining clips
close. Make sure the notches in the DIMM align with the tabs on the connector.
Notches
PCI extender card removal
1. Remove the cover (see “Removing the cover” on page 15).
2. Remove the machine chassis foot that is in front of the extender card.
3. Remove the 2 screws that hold the PCI extender card in place.
4. Pull the card down (not out) firmly on both sides until it detaches from the
system board.
Replacing a system board
Important:
Before replacing a system board, back up Asset information by using the “Asset EEPROM
backup” on page 12.
Notes:
1. The BIOS and Vital Product Data (VPD) for the computer you are servicing must be
installed on the new system board (FRU) after it is installed in the computer. To do
this, you must run the Flash Update program using the Flash Update diskette. See
“BIOS levels” on page 87, “Vital product data” on page 86, and “Flash (BIOS/VPD)
update procedure” on page 88.
2. Always ensure the latest level of BIOS is installed on the computer. A down level BIOS
may cause false errors and unnecessary replacement of the system board.
3. The processor is a separate FRU from the system board and is not included with the
system board FRU.
4. If the new system board does not correct the problem, reinstall the options on the old
system board, reinstall the old system board, then replace the processor.
To replace the system board, do the following:
1. Remove the cover (see “Removing the cover” on page 15).
2. Remove the video card.
3. Remove the machine chassis foot that is in front of the PCI extender card.
4. Remove the extender card (see “PCI extender card removal” on page 31).
5. Remove the 7 screws that attach the system board to the chassis.
Chapter 5. FRU Replacements 31