IBM System x3950, Problem Determination And Service Manual

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1. Read the safety information that begins on page vii and “Installation guidelines”
on page 117.
2. Turn off the server and peripheral devices, and disconnect the power cords and
all external cables necessary to replace the device.
3. Remove the top cover and bezel (see “Top cover and bezel” on page 131).
4. Remove the DVD drive power and signal cables from the media-interposer card.
5. Note where the light path diagnostics ribbon cable and the USB cable are
connected, and then disconnect the light path diagnostics ribbon cable and the
USB cable from the I/O board.
6. Press the blue release button on the chassis above the front-panel assembly
and pull the assembly out of the server.
7. If you are instructed to return the front-panel assembly, follow all packaging
instructions, and use any packaging materials for shipping that are supplied to
you.
Note: To remove the operator information panel from the front panel assembly, see
“Operator information panel assembly” on page 135.
To install the replacement front-panel assembly, complete the following steps:
1. Guide the light path diagnostics ribbon cable through first, and insert the
assembly into the server through the front.
2. Connect the DVD drive power cable and signal cable.
3. Connect the light path diagnostics ribbon cable and the USB cable to the I/O
board.
4. Install the top cover and bezel (see “Top cover and bezel” on page 131).
5. Slide the server into the rack.
6. Connect the cables and power cords (see “Connecting the cables” on page 120
for cabling instructions).
7. Turn on all attached devices and the server.
Microprocessor tray and microprocessor
The following notes describe information that you must consider when replacing a
microprocessor:
v When the microprocessor tray is replaced, the BMC MAC address changes to a
default value.
v
The voltage regulators for microprocessors 1 and 2 are integrated on the
microprocessor board; the VRMs for microprocessors 3 and 4 come with the
microprocessor options and must be installed on the microprocessor board.
v
When installing additional microprocessors, populate the microprocessor
connectors in numeric order, starting with connector 2.
v A dual-core upgrade option is available to enable the server to support dual-core
microprocessors.
Important: The following minimum code levels must be installed for the server
to support the dual-core upgrade:
Basic input/output system (BIOS) code level ZUJT53A
Remote Supervisor Adapter II (RSA2) firmware level ZUEP37B
Baseboard management controller (BMC) code level Z2BT05D
Complex programmable logic device (CPLD) firmware level HEUD18A
Diagnostic program (Diags) code level ZUYT26A
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide