Manuals

Manuals
VRM: Dell Precision Workstations 450 and 650 User's Guide

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VRM

Dell Precision™ Workstations 450 and 650 User's Guide

  Installing a VRM

  Removing a VRM


NOTICE: A VRM must be installed to operate dual microprocessors. To locate the VRM connector, see the system board components illustration (for the Dell Precision 450 computer, see "System Board Components" or for the Dell Precision 650 computer, see "System Board Components") or the system board label inside your computer.
  1. Shut down the computer through the Start menu.

  2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.

NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
  1. Disconnect any telephone or telecommunication lines from the computer.

  2. Disconnect your computer and all attached devices from electrical outlets, and then press the power button to ground the system board.

  3. If you have installed a padlock through the padlock ring on the back panel, remove the padlock.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.
  1. Open the computer cover.


Installing a VRM

CAUTION: Before you perform this procedure, follow the safety instructions in the System Information Guide.
  1. Remove the microprocessor airflow shroud (for the Dell Precision 650 computer, see "Microprocessor Airflow Shroud" or for the Dell Precision 450 computer, see "Microprocessor Airflow Shroud").

  2. Press the securing clips at each end of the VRM connector outward until they snap open.

To locate the VRM connector, see the system board components illustration (for the Dell Precision 450 computer, see "System Board Components" or for the Dell Precision 650 computer, see "System Board Components") or see the system board label inside your computer.

1

VRM

2

securing clips (2)

3

connector

  1. Align the notch on the bottom of the VRM with the ridges inside the connector.

  2. Press the VRM straight down into the connector until the securing clips snap into place at the ends of the module.

  3. Install the microprocessor airflow shroud (for the Dell Precision 650 computer, see "Microprocessor Airflow Shroud" or for the Dell Precision 450 computer, see "Microprocessor Airflow Shroud").

  4. Close the computer cover.

NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
  1. Connect your computer and devices to electrical outlets, and turn them on.


Removing a VRM

CAUTION: Before you perform this procedure, follow the safety instructions in the System Information Guide.
  1. Remove the microprocessor airflow shroud (for the Dell Precision 650 computer, see "Microprocessor Airflow Shroud" or for the Dell Precision 450 computer, see "Microprocessor Airflow Shroud").

  2. Press the securing clips at each end of the connector outward simultaneously until the VRM slightly pops out from the connector.

  3. Grasp the VRM by its top corners, and ease it out of the connector.

  4. If you are installing a new VRM, see "Installing a VRM."

If you are not installing a new VRM, continue with step 5.

  1. Install the microprocessor airflow shroud (for the Dell Precision 650 computer, see "Microprocessor Airflow Shroud" or for the Dell Precision 450 computer, see "Microprocessor Airflow Shroud").

  2. Close the computer cover.

NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
  1. Connect your computer and devices to electrical outlets, and turn them on.


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