IBM System x3750 M4 Installation And Service Manual page 333

To remove the system board, complete the following steps:
Procedure
1. Read the safety information and installation guidelines, see "Safety" on page
vii and "Installation guidelines" on page 35.
2. Turn off the server (see "Turning off the server" on page 22) and all attached
peripheral devices. Disconnect all power cords; then, disconnect all external
cables as necessary to replace the device.
3. If the server is in a rack, slide the server out of the rack.
4. Remove the server cover (see "Removing the server top cover" on page 226).
5. Remove the fan cage assembly (see "Removing the fan cage assembly" on
page 270
6. Remove the DIMM air baffle, if one is installed (see "Removing the DIMM air
baffle" on page 232).
7. Slide the power supplies out of the bays slightly to disengage them from the
connectors.
8. Remove the microprocessor and memory expansion tray, if one is installed
(see "Removing the microprocessor and memory expansion tray assembly" on
page 305).
9. Remove the microprocessor air baffle (see "Removing the microprocessor air
baffle" on page 230).
10. Disconnect all cables from the system board. Make a list of each cable as you
disconnect it; you can then use this as a checklist when you install the new
system board.
11. Disconnect all remote RAID battery cables or flash power module cables from
the adapters and remove the batteries or flash power module from the trays
located on top of the USB/video assembly, if any are installed (see "Removing
a RAID battery or flash power module" on page 275).
12. Remove the DIMMs from the system board and set them aside on a
static-protective surface for reinstallation (see "Removing a memory module"
on page 246).
Note: Make a note of the location of each DIMM as you remove it, so that
you can later reinstall it in the same connector.
13. Remove the RAID cache cards from the system board, if any are installed (see
"Removing a RAID cache card" on page 276).
14. Remove the power interposer card assembly, if one is installed (see
"Removing the power interposer for redundant power supply card assembly"
on page 290).
15. Remove the PCIe riser-card assembly, if it is installed (see "Removing a PCI
riser-card assembly" on page 283).
16. Remove any adapters that are installed on the system board (see "Removing
an adapter" on page 234).
17. Remove the 10 Gb Ethernet adapter, if one is installed (see "Removing the
IBM Dual-port 10Gb-T (copper) Ethernet Adapter or the IBM Dual-port 10Gb
SFP+ (fibre) Ethernet Adapter" on page 272).
18. Remove the USB embedded hypervisor flash device (see "Removing a USB
embedded hypervisor flash device" on page 260).
19. Remove all heat sinks and microprocessors, and set them aside on a
static-protective surface for reinstallation (see "Removing a microprocessor
and heat sink" on page 299).
Chapter 6. Removing and replacing components
315