Dell 650 service manual Installation Guidelines, Installing the Microprocessor

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Microprocessor

Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual

Installation Guidelines

Installing the Microprocessor

Removing the Microprocessor

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.

Installation Guidelines

•Your computer is designed for dual-processor operations. The heat sinks (CPU_0 and CPU_1) are keyed to fit their specific connector.

•For single-processor operations, the processor must be installed in socket CPU_0. The VRM for the single processor is already installed and cannot be removed. Processor socket 1 and VRM connector 1 must be empty. To locate these components, 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.

•For dual-processor operations, both processor sockets and the VRM connector must be populated. 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.

•For dual-processor operations, the two processors and the VRMs must be identical. If the processors do not match, you receive a system message. If the processors voltage don't match or the VRM is not properly installed, the diagnostic lights indicate an error..

•If you are upgrading your microprocessor, keep your original microprocessor heat sink and securing clips for future troubleshooting.

Installing the Microprocessor

CAUTION: The processor can get very hot during normal operation. Ensure that the processor has had sufficient time to cool before you touch it.

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

If you are replacing a microprocessor, see "Removing the Microprocessor."

NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer.

2.If the release lever is not extended to the release position, move it to that position.

3.Align pin-1 (the imprinted corner) of the microprocessor and pin-1 of the socket.

NOTICE: Microprocessor pins are delicate. To avoid damage, ensure that the microprocessor aligns properly with the socket, and do not use excessive force when you install the processor.

4.Carefully set the microprocessor in the socket and press it down lightly to seat it.

5.Rotate the release lever back toward the system board until it snaps into place, securing the microprocessor.

1microprocessor pin-1 indicator

2release lever

3microprocessor

4microprocessor socket

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Contents VRM Battery Page Precautionary Measures Before You BeginRecommended Tools Protecting Against Electrostatic DischargeBack to Contents Installing a Card CardsPage Removing a Card Back to Contents Chassis Intrusion Switch Removing the Chassis Intrusion SwitchReplacing the Chassis Intrusion Switch Removing the Control Panel Control PanelControl Panel Components Replacing the Control Panel System Board Components Inside Your Computer Dell Precision 450 ComputerInside View of Your Computer DIMM4 Connecting Drive Cables Drives Dell Precision 450 ComputerOverview IDE Drive AddressingDevice Termination Scsi Device Installation GuidelinesScsi ID Numbers Hard Drive General GuidelinesScsi Cables Removing a Hard DriveInstalling a Hard Drive Close the computer cover Floppy Drive Removing a Floppy DriveInstalling a Floppy Drive CD/DVD Drive Removing a CD/DVD DriveInstalling a CD/DVD Drive Close the computer cover Back to Contents Replacing the Power Supply Power Supply Dell Precision 450 ComputerRemoving the Power Supply Drive Door Dell Precision 650 Computer Removing the Drive DoorReplacing the Drive Door Removing the Microprocessor Airflow Shroud Installing the Microprocessor Airflow ShroudMicroprocessor Airflow Shroud Dell Precision 450 Computer Card Fan and Guide Dell Precision 650 Computer Removing the Card Fan and GuideReplacing the Card Fan and Guide Card Fan GuideBack to Contents Replacing the Front Panel Front PanelRemoving the Front Panel Page Panel Components for the Dell Precision 450 Computer PanelPanel Components for the Dell Precision 650 Computer Removing the I/O Panel Replacing the I/O PanelPage Inside Your Computer Dell Precision 650 Computer Auxled Closing the Computer Cover Back to Contents Opening the Computer Cover Security cable slot Cover release latch Padlock ring Microprocessor Installation GuidelinesInstalling the Microprocessor Removing the Microprocessor Close the computer cover Drives Dell Precision 650 Computer Scsi Device Installation Guidelines Hard Drive Installing a Hard Drive Page Floppy Drive Installing a Floppy Drive Page CD/DVD Drive Installing a CD/DVD Drive Page Close the computer cover Installing a VRM Removing a VRMBack to Contents Memory Installation Guidelines Addressing Memory With 4-GB ConfigurationsMemory Removing a Memory ModuleAdding a Memory Module Back to Contents Microprocessor Airflow Shroud Dell Precision 650 Computer Power Supply Dell Precision 650 Computer Replace the card fan Install the cards Replacing the System Board System BoardRemoving the System Board Back to Contents
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