IBM System x3950 Type 8878 Service Manual page 78

2. Turn off the server and peripheral devices, and disconnect the power cords and
3. Remove the top cover and bezel (see "Top cover and bezel" on page 45).
4. Remove all fans (see "Hot-swap fan" on page 37).
5. Remove the memory cards (see "Removing and replacing a memory card" on
6. Lift the microprocessor-tray release latch, open the microprocessor-tray levers,
7. Remove the power supplies and the power-supply structure (see "Power-supply
8. Remove the screws that secure the power backplane to the chassis and lift the
9. If you are instructed to return the power backplane, follow all packaging
To install the replacement power backplane, complete the following steps:
1. Align the power backplane in the server and secure the power backplane with
2. Install the power-supply structure and the power supplies.
3. Slide the microprocessor tray in the server and close the microprocessor-tray
4. Install the memory cards.
5. Install the fans.
6. Install the top cover and bezel (see "Top cover and bezel" on page 45).
7. Slide the server into the rack.
8. Connect the cables and power cords (see "Connecting the cables" on page 34
9. Turn on all attached devices and the server.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide
all external cables necessary to replace the device.
page 40).
and pull the microprocessor tray out of the server slightly (see "Removing and
installing a microprocessor" on page 55).
structure" on page 51).
power backplane out of the server.
instructions, and use any packaging materials for shipping that are supplied to
you.
screws.
levers.
for cabling instructions).