IBM @Server pSeries 630 6C4, Service Manual

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Central Electronics Complex (CEC) Backplane
Before performing the following procedure, read the “Safety Notices” on page xi.
Attention: To perform this procedure, you must remove and install the PCI riser card. To remove or
install the PCI riser card from its docking connectors requires a considerable amount of force. If you are
servicing a Model 6C4, it is strongly recommended that the system drawer be removed from the rack. If
you are servicing a Model 6E4, it is strongly recommended that the system be placed on its side, on a flat
and stable surface. To avoid potential breakage, make sure the Model 6E4 stabilizer foot closest to the
desktop or floor does not rest rest on any surface.
CEC Backplane Removal
Attention: Before you remove or disconnect any components, record their location. Before removing the
CEC backplane from the system for servicing or replacement, record the settings of any jumpers located
on the CEC backplane.
To remove the CEC backplane (system board), do the following:
1. On a Model 6C4, open the front and rear rack doors and place the system into the service position as
described in “Placing the Model 6C4 into the Service Position” on page 429.
On a Model 6E4, open the bezel door.
2. Shut down the system as described in either “Stopping the System without an HMC Attached” on
page 424, “Stopping the System with an HMC Attached and AIX Installed” on page 424, or “Stopping
the System with an HMC Attached and Linux Installed” on page 425.
3. Disconnect the power source from the system.
Note: This system may be equipped with a second power supply. Before continuing with this
procedure, ensure that the power source to the system has been completely disconnected.
4. Label and disconnect all other cables located at the rear of the system unit.
5. Remove the front bezel as described in “Front Bezel Removal (Model 6C4)” on page 442 or “Front
Bezel Removal (Model 6E4)” on page 443.
6. Remove the service access cover as described in “Service Access Cover Removal (Model 6C4)” on
page 431 or “Service Access Cover Removal (Model 6E4)” on page 436.
7. Record the slot number and location of each adapter being removed.
8. 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.
9. Remove the PCI adapters as described in “Non-Hot-Pluggable PCI Adapter Removal” on page 446.
10. Disconnect all power and signal cables from the media drives, located in media bay 1 and media bay
2. Then remove the media drives as described in “Media Removal” on page 466.
11. Remove the media device support shelf by loosening the thumbscrew and grasping the back edge of
the shelf, sliding it back, then lifting it up and out of the system chassis.
Note: The support leg located on the bottom of the support shelf is used to deactivate a microswitch.
The microswitch is located on the CEC backplane and when deactivated, removes power to
many of the components and connectors located on the CEC backplane. This support shelf
must be correctly seated and secured in position after any new FRU is added to the system
and you perform a system boot.
12. Remove all processor cards or the processor filler panel as described in “Processor Card Removal”
on page 488.
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Eserver
pSeries 630 Model 6C4 and Model 6E4 Service Guide