FRU information
Front-panel assembly
To remove the front-panel assembly, complete the following steps.
Release
button
1. Read the safety information that begins on page vii, and “Handling
static-sensitive devices” on page 31.
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.
4. Remove the DVD drive power and signal cables from the media-interposer card.
5. Note where the light path diagnostics ribbon cable is connected, and then
disconnect the light path diagnostics ribbon cable from the I/O board.
6. Press the blue tab on the chassis above the front-panel assembly and pull the
assembly out of the server.
To install a 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 to the I/O board.
4. Replace the bezel and top cover.
5. Reconnect the external cables and power cords.
Microprocessor tray and microprocessor
The following sections describe how to replace the microprocessor tray and a
microprocessor.
The following notes describe information that you must consider when installing 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.
54 IBM System x3850 Type 8864: Problem Determination and Service Guide
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