Removing Dimms; Installing The Memory Board Dc-To-Dc Converters - HP Integrity rx4610 User Manual

Chapter 5: Installing Additional Memory

Removing DIMMs

You may need to remove a DIMM module to downsize your memory configuration or to replace a
defective DIMM.
1. If the system is already installed and working, power down the system.
Refer to Chapter 1, "Controls, Ports, and Indicators."
WARNING
2. Disconnect the power cables and all external cables.
If necessary, label each one to support re-assembly.
3. Remove the top cover from the HP Server.
Refer to Chapter 2, "Opening and Closing the HP Server."
4. Remove the existing DIMM from its socket by gently pushing the plastic ejector levers out and
down.
5. Hold the DIMM only by its upper edges, being careful not to touch its components or gold
edge connectors. Carefully lift it away from the socket
6. Place the DIMM in its anti-static container.

Installing the Memory Board DC-to-DC Converters

The Memory Board DC-DC converters reside on the side of the Processor/Memory Complex inside
the system chassis. The server uses four converters to supply regulated power to the
Processor/Memory Complex. You can access them by removing the Processor/Memory Complex and
working from its side. The Memory Board DC-to-DC Converters must be installed after the Memory
Board is replaced. To install the converters, complete the following procedure:
1. Observe the necessary safety and ESD precautions.
2. Remove the Processor/Memory Complex as described in "Removing the Processor/Memory
Complex" in Chapter 5.
3. Carefully align the Processor DC-to-DC converter's plug with the socket on the
Processor/Memory Complex assembly and press it firmly into place. Be sure to keep the
converter level such that the keyed guide accepts the edges of the bottom PCB on the
converter.
4. Slip the slide clamp up over the converter to secure it in place. Do not tighten the screws until
both pairs of converters have been installed.
5. Repeat steps three and four for each DC-to-DC converter you install. If you need to replace
converters on the secondary memory board beneath the complex, turn the complex over and
then replace the converters.
6. Reinstall the Processor/Memory Complex as described in "Installing the Processor/Memory
Complex" in Chapter 5.
The power supply will continue to provide standby current to the HP Server until
the power cable is disconnected.
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