Dell Precision 650 User Manual

DellPrecision™Workstation650andDellPrecisionWorkstation450Service Manual Information in this document is subject to change without notice. ©

Back to Contents Page Chassis Intrusion Switch DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Removing the Chassi

Replacing the Chassis Intrusion Switch To replace the chassis intrusion switch, perform the removal procedure in reverse.  Back to Contents Page 

Back to Contents Page Control Panel DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Control Panel Components Rem

 Dell Precision 450 Computer Replacing the Control Panel To replace the control panel, perform the removal procedure in reverse. Back to Contents P

Back to Contents Page Inside Your Computer — DellPrecision™450Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceM

 Back to Contents Page  1 CD/DVD drive connector (IDE2) 14 PCI card connectors (PCI1, PCI2 [32-bit connectors], and PCI3 [64-bit PCI-X connector])

Back to Contents Page Drives — DellPrecision™450Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Overvi

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on t

SCSI logic requires that termination be enabled for the two devices at opposite ends of the SCSI chain and disabled for all devices in between. It is

Installing a Hard Drive 1. Unpack the replacement hard drive, and prepare it for installation. 2. Check the documentation for the drive to verify

Back to Contents Page Battery DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual A coin-cell battery maintains compute

5. If you are installing a drive that has its own controller card, install the controller card in an expansion slot. See the documentation that acc

See the documentation for your operating system for instructions. 15. Test the hard drive by running the Dell Diagnostics. 16. If the drive you ju

Installing a Floppy Drive 1. If you are replacing a drive and the the new drive does not have the bracket rails attached, remove the rails from the o

4. If you are installing a new floppy drive rather than replacing a drive, remove the front-panel inserts. From inside the drive bay, gently press o

Installing a CD/DVD Drive 1. If you are installing a new drive, unpack the drive and prepare it for installation. Check the documentation that acco

5. If you are installing a drive that has its own controller card, install the controller card in an expansion slot. See the documentation that acc

10. Connect your computer and devices to electrical outlets, and turn them on. See the documentation that came with the drive for instructions on in

Back to Contents Page Power Supply — DellPrecision™450Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual 

Back to Contents Page Drive Door — DellPrecision™650Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Re

3. Lift the bottom hinge away from the computer. Replacing the Drive Door To replace the drive door, perform the removal procedure in reverse. Back

Back to Contents Page Microprocessor Airflow Shroud — DellPrecision™450Computer DellPrecision™Workstation650andDellPrecisionWorkstation450

Back to Contents Page Card Fan and Guide — Dell Precision 650 Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManu

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Back to Contents Page Front Panel DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Removing the Front Panel Repla

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Back to Contents Page I/O Panel DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual I/O Panel Components for the Dell

Removing the I/O Panel 1. Remove the front panel. 2. Disconnect the control panel cable from the control panel connector. 3. Disconnect the front

Back to Contents Page Inside Your Computer — DellPrecision™650Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceM

Back to Contents Page  1 CD/DVD drive connector (IDE2) 15 standby power light (AUX_PWR_LED) 2 I/O panel connector (I/O PANEL) 16 PCI card connectors

Back to Contents Page Before You Begin DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Recommended Tools Precaut

Back to Contents Page Closing the Computer Cover DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual 1. Ensure that al

5. Connect your computer and devices to electrical outlets, and turn them on. Back to Contents Page 

Back to Contents Page Opening the Computer Cover DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual 1. Lay the comput

 Back to Contents Page  1 security cable slot 2 cover release latch 3 padlock ring

Back to Contents Page Microprocessor DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Installation Guidelines Ins

6. Remove the thermal grease protective cover and place the heat sink in the base. 7. Place one end of the heat sink under the tab on the retention

3. Pull the release lever straight up until the microprocessor is released. 4. Remove the microprocessor from the socket. If you are replacing th

Back to Contents Page Drives — DellPrecision™650Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Overvi

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on t

If you attach additional optional SCSI devices, see the documentation for each device for information about setting the appropriate SCSI ID number. De

l When transporting a sensitive component, first place it in an antistatic container or packaging. l Handle all sensitive components in a static-saf

3. Press in on the tabs on each side of the drive and slide the drive up and out. Installing a Hard Drive 1. Unpack the replacement hard drive, a

4. Gently slide the drive into place until the tabs securely click into position. 5. If you are installing a drive that has its own controller ca

7. Check all connectors to be certain that they are properly cabled and firmly seated. 8. Close the computer cover. 9. Connect your computer and

2. Press inward on the two tabs on the sides of the drive, slide the drive upward, and remove it from the floppy-drive bay. Installing a Floppy Dr

2. Gently slide the drive into place until the tabs securely click into position. 3. Attach the power and floppy-drive cables to the floppy drive

4. If you are installing a new floppy drive rather than replacing a drive, remove the front-panel inserts. From inside the drive bay, gently press

2. Press inward on the two tabs on the sides of the drive, and then slide the drive upward and remove it from the drive bay. Installing a CD/DVD D

3. If you are installing a replacement drive and the new drive does not have the bracket rails attached, remove the rails from the old drive by remo

7. If you are installing a new CD/DVD drive rather than replacing a drive, remove the front-panel inserts. From inside the drive bay, gently press

Back to Contents Page VRM DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Installing a VRM Removing a VRM Insta

Back to Contents Page Cards DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Installing a Card Removing a Card Y

for the Dell Precision 450 computer, see "Microprocessor Airflow Shroud — DellPrecision™450Computer"). 6. Close the computer cover. 7.

Back to Contents Page Memory DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Memory Installation Guidelines Remo

Adding a Memory Module 1. Press out the securing clip at each end of the memory module connector. 2. Align the notch on the bottom of the module w

9. Open the computer cover and check the installed memory modules to ensure that they are seated properly in their sockets. Then repeat steps step 4

Back to Contents Page Microprocessor Airflow Shroud — DellPrecision™650Computer DellPrecision™Workstation650andDellPrecisionWorkstation450

Back to Contents Page Power Supply — DellPrecision™650Computer DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual 

5. Lift the power supply away from the computer. 6. Slide the power supply cables out of the computer (through the hole). Replacing the Power Sup

Back to Contents Page System Board DellPrecision™Workstation650andDellPrecisionWorkstation450ServiceManual Removing the System Board Rep

5. Slide the system board assembly toward the back of the computer until the assembly clicks into position. 6. Replace any components and cables t

6. Before you lower the retention arm, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch in t

8. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connectio

3. If necessary, disconnect any cables connected to the card. 4. Grasp the card by its top corners, and ease it out of its connector. 5. If you