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6 Servicing the Electronics Bay
Adding or Replacing PCI Cards
CAUTION
Remove the AC power cords from the system. Damage to the system can occur if AC power is not
disconnected from the system prior to removal or installation of the PCI riser assembly.
The PCI riser assembly contains the following active components:
• One server I/O Hub (SIOH) component of the E8870 chip set
• One P64H2 PCI-X bridge component
• Three non-hot-plug able PCI-X slots
One 64-bit, 133-MHz PCI-X, full length
Two 64-bit, 100-MHz PCI-X, full length
• An integrated DC-to-DC voltage converter
• Server management logic
• I
2
C logic
Field Replaceable Unit (FRU) device ID ROM
Temperature sensor
The PCI riser assembly needs to be removed from the chassis in order to add or remove PCI cards.
Refer to the following instructions.
Removing the PCI Riser Assembly
To remove the PCI riser assembly from the chassis, refer to Figure 59 and follow these
instructions:
1. See the warnings and cautions under Removing and Installing the Top Cover.
2. Turn off all peripheral devices connected to the system.
3. Power down the system by pressing and holding the power button on the front panel for several
seconds.
4. Unplug both AC power cords to remove standby power from the server.
5. Follow the instructions under Removing the Top Cover.
6. Disconnect all peripheral cables attached to adapters that are installed in the PCI riser assembly.
7. Firmly grasp the riser release mechanism lever and slowly pull up and back on the lever. See
Figure 59.
8. Actuating the riser release mechanism lever towards the rear of the system raises the entire PCI
riser assembly. This action disengages the riser board from the main board vertically.
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