CEC Backplane Replacement
To replace the CEC backplane (system board), do the following:
1. Before handling any card, board, or memory DIMM, be sure to use your electrostatic discharge strap
to minimize static-electric discharge. Refer to “Handling Static-Sensitive Devices” on page 423.
2. If necessary, remove the CEC backplane from the antistatic package.
3. Carefully grasp the CEC backplane along two edges, and align the retaining screw holes with its
mating screw holes located on the system chassis.
Note: Use care when replacing the CEC backplane. Standoffs attached to the chassis base may
damage the components attached to the bottom of the CEC backplane.
4. Replace the CEC backplane and slide it toward the back of the system. Ensure that all of the back
connectors located on the CEC backplane are positioned correctly through the rear chassis bulkhead.
5. Replace the retaining screws that secure the CEC backplane to the system chassis.
Note: For proper alignment, insert all screws and finger-tighten only. Ensure the CEC backplane is
not binding.
6. Tighten all CEC backplane retaining screws, including the 16 threaded standoffs that secure each
connector to the back of the system chassis.
7. Reconnect all power, signal, and SCSI cables that attach to the CEC backplane.
8. Replace the plastic membrane over the CEC backplane.
9. Replace the front power supply and processor support bracket.
10. Replace the processor cooling fan cage assembly.
11. Replace the eight screws that secure the processor cooling fan cage assembly to the rear chassis.
12. Replace the 16 threaded standoffs that secure the CEC backplane rear connectors to the rear
chassis.
13. Replace the processor cooling fans as described in “Hot-Swap Fan Assembly Replacement” on
page 464.
14. Replace the PCI adapter cooling fan stabilizing cage by installing the two tabs located on the bottom
edge of the cage into their mating slots located on the chassis. Secure the cage to the chassis with a
retaining screw.
15. Replace the PCI cooling fans as described in “Hot-Swap Fan Assembly Replacement” on page 464.
16. Replace the PCI riser card as described in “PCI Riser Card Replacement” on page 478.
17. Replace all PCI Adapters as described in “Adding or Replacing a Non-Hot-Pluggable PCI Adapter” on
page 448.
18. Replace the processor assembly and, if applicable, the processor assembly filler panel.
19. Replace the media device support shelf. Tighten the thumbscrew located on the media device support
shelf.
Note: When replacing the support shelf, ensure that the lower support leg activates the microswitch
located on the CEC backplane. Failure to do so results in the system not being able to power
on.
20. Replace all removed media drives, ensuring that the media drives removed are returned to the same
media bay from which they were removed. Refer to “Media Replacement” on page 469, if necessary.
21. Reconnect all power and signal cables to their respective media drives.
22. Replace the power supplies and, if applicable, the power supply filler panel as described in
“Non-Hot-Swap Power Supply Replacement” on page 503 or “Hot-Swap Power Supply Replacement”
on page 506.
Chapter 9. Removal and Replacement Procedures 513
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