Dell Precision Workstation 450 Service Manual

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User manual (326 pages)

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Page 1 Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
Page 2 If you have not already done so, make a copy of your configuration information, found in system setup. To replace the battery: 1. Locate the battery socket. For the Dell Precision 450 computer, see "System Board Components" or for the Dell Precision 650 computer, see "System...
Page 4: Before You Begin
Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. CAUTION: Do not attempt to service the computer yourself, except as explained in your online Dell™ documentation or in instructions otherwise provided to you by Dell. Always follow installation and service instructions closely. NOTICE: To help avoid possible damage to the system board, wait 5 seconds (or wait until the standby light is extinguished) after turning off the computer and unplugging the power cable before removing a component from the system board or disconnecting a device from the computer.
Page 5 When transporting a sensitive component, first place it in an antistatic container or packaging. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads and workbench pads. Back to Contents Page ...
Page 6: Installing A Card
Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Your Dell™ computer provides slots for PCI/PCI-X and AGP cards. For more information, see "Specifications" in your User's Guide or the system board components illustration for your computer.
Page 7 1 fully seated card 2 not fully seated card 3 bracket within slot 4 bracket caught outside of slot 6. Before you lower the retention arm, ensure that: The tops of all cards and filler brackets are flush with the alignment bar. The notch in the top of the card or filler bracket fits around the alignment guide.
Page 8: Removing A Card
base AGP retention spring indentation NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 8. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connections.
Page 9 4. Grasp the card by its top corners, and ease it out of its connector. 5. If you are removing the card permanently, install a filler bracket in the empty card-slot opening. If you need a filler bracket, contact Dell. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer.
Page 10: Removing The Chassis Intrusion Switch
Before disconnecting a device from the computer or removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light on the Dell Precision 650 computer, see "System Board Components"...
Page 11: Replacing The Chassis Intrusion Switch
Replacing the Chassis Intrusion Switch To replace the chassis intrusion switch, perform the removal procedure in reverse. Back to Contents Page ...
Page 12: Control Panel Components
2. Disconnect the control-panel cable from the I/O panel connector. 3. Disconnect the I/O panel cable from the connector on the system board. To locate the system board connector on the Dell Precision 650 computer, see "System Board Components" or on the Dell Precision 450 computer, see "System Board...
Page 13: Replacing The Control Panel
Dell Precision 450 Computer control panel mounting screw Replacing the Control Panel To replace the control panel, perform the removal procedure in reverse. Back to Contents Page ...
Page 14: Inside View Of Your Computer
Back to Contents Page Inside Your Computer — Dell Precision™ 450 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Inside View of Your Computer System Board Components CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover.
Page 15 CD/DVD drive connector (IDE2) 14 PCI card connectors (PCI1, PCI2 [32-bit connectors], and PCI3 [64-bit PCI-X connector]) I/O panel (I/O PANEL) 15 telephony connector (MODEM) floppy drive connector (DISKETTE) 16 AGP Pro card connector (AGP) memory module connectors (DIMM_1, DIMM_2, DIMM_3, 17 VRM connector (VRM) (for a second microprocessor only) DIMM_4) suspend-to-RAM light (STR_LED)
Page 16: Ide Drive Addressing
Back to Contents Page Drives — Dell Precision™ 450 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Overview Hard Drive Floppy Drive CD/DVD Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Overview Your computer supports: Two hard drives...
Page 17: Scsi Device Installation Guidelines
ID, your computer may hang during POST and in SCSI BIOS. SCSI devices installed by Dell are configured correctly during the manufacturing process. You do not need to set the SCSI ID for these SCSI devices.
Page 18: General Guidelines
SCSI Cables Ultra 320 (optional on the Dell Precision 450 computer), Ultra 160/m and Ultra2/Wide LVD drives (typically hard drives) both use a 68-pin cable. One end of the cable attaches to the SCSI connector on the SCSI controller card installed in your computer. The remaining connectors on the cable attach to the various drives.
Page 19: Installing A Hard Drive
tabs (2) hard drive Installing a Hard Drive 1. Unpack the replacement hard drive, and prepare it for installation. 2. Check the documentation for the drive to verify that it is configured for your computer. 3. If your replacement hard drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
Page 20 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 accompanied the drive and controller card to verify that the configuration is correct for your computer. NOTICE: Match the colored strip on the cable with pin 1 on the drive (pin 1 is marked as "1").
Page 21: Removing A Floppy Drive
See the documentation for your operating system for instructions. 15. Test the hard drive by running the Dell Diagnostics. 16. If the drive you just installed is the primary drive, install your operating system on the hard drive. Floppy Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 22: Installing A Floppy Drive
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 old drive by removing the two screws that secure each rail to the drive. Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and then inserting and tightening all four screws (two screws on each rail).
Page 23: Removing A Cd/Dvd Drive
See the documentation that came with the drive for instructions on installing any software required for drive operation. 8. Enter system setup and update the appropriate Diskette Drive A option to reflect the size and capacity of your new floppy drive. 9. To verify that your computer works correctly, run the Dell Diagnostics. CD/DVD Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 24: Installing A Cd/Dvd Drive
2. Connect the new drive to the set of rails that are attached to the inside of the computer cover. If a set of rails is not attached inside the cover, contact Dell. 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 removing the two screws that secure each rail to the drive.
Page 25 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 accompanied the drive and controller card to verify that the configuration is correct for your computer. 6.
Page 26 11. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives: Secondary to Auto. See "Advanced Features" in your User's Guide for more information. 12. To verify that your computer works correctly, run the Dell Diagnostics. Back to Contents Page...
Page 27: Removing The Power Supply
Back to Contents Page Power Supply — Dell Precision™ 450 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Power Supply NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet.
Page 28: Removing The Drive Door
Back to Contents Page Drive Door — Dell Precision™ 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Drive Door Replacing the Drive Door CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Drive Door 1.
Page 29: Replacing The Drive Door
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 to Contents Page ...
Page 30: Removing The Microprocessor Airflow Shroud
Back to Contents Page Microprocessor Airflow Shroud — Dell Precision™ 450 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Microprocessor Airflow Shroud Installing the Microprocessor Airflow Shroud CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 31 Back to Contents Page Card Fan and Guide — Dell Precision 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Card Fan and Guide Replacing the Card Fan and Guide The Card Fan Guide Removing the Card Fan and Guide CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 32 Back to Contents Page ...
Page 33: Removing The Front Panel
Dell Precision™ 450 Computer." 2. Release the front panel by pressing each of the front-panel release tabs. The Dell Precision 650 computer has seven release tabs and the Dell Precision 450 computer has seven release tabs. Dell Precision 650 Computer Dell Precision 450 Computer 3.
Page 34 ...
Page 35 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 Precision 650 Computer I/O Panel Components for the Dell Precision 450 Computer Removing the I/O Panel Replacing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 36: Removing The I/O Panel
5. From inside the cover, remove the mounting screw that secures the front I/O panel to the computer. 6. Remove the front I/O panel from the computer. Dell Precision 650 Computer Dell Precision 450 Computer Replacing the I/O Panel...
Page 38 Back to Contents Page Inside Your Computer — Dell Precision™ 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Inside View of Your Computer System Board Components CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover.
Page 39 CD/DVD drive connector (IDE2) 15 standby power light (AUX_PWR_LED) I/O panel connector (I/O PANEL) 16 PCI card connectors (PCI1, PCI2 [32-bit connectors], PCI3 , PCI4, and PCI5 [64-bit PCI-X connectors]) floppy-drive connector (DISKETTE) 17 telephony connector (MODEM) memory module connectors (DIMM_1, DIMM_2, DIMM_3, 18 AGP Pro card connector (AGP) DIMM_4) suspend-to-RAM light (STR_LED)
Page 40: Closing The Computer Cover
If your computer has a baffle, ensure that the baffle is correctly positioned by guiding it into place as you lower the cover. c. Press down on the cover to close it. d. Once the cover is closed, slide the release latch to the right until the latch clicks into place. Dell Precision 650 Computer cover release latch security cable slot padlock ring ...
Page 41 5. Connect your computer and devices to electrical outlets, and turn them on. Back to Contents Page ...
Page 42: Opening The Computer Cover
3. Ground yourself by touching an unpainted metal surface on the computer, such as the metal at the back of computer, before touching anything inside your computer. While you work, periodically touch any unpainted metal surface on the computer to dissipate any static electricity that could harm internal components. Dell Precision 650 Computer cover release latch security cable slot padlock ring ...
Page 43 security cable slot cover release latch padlock ring Back to Contents Page ...
Page 44: Installing The Microprocessor
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 —...
Page 45: Removing The Microprocessor
8. Replace the retention module clips. 9. If you installed a microprocessor replacement kit from Dell, return the original heat sink assembly and microprocessor to Dell in the same package in which your replacement kit was sent.
Page 46 If you are removing a second microprocessor and not installing another one, remove the VRM and then continue with step 9. 5. Replace the 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 —...
Page 47 Back to Contents Page Drives — Dell Precision™ 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Overview Hard Drive Floppy Drive CD/DVD Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Overview Your computer supports: Three hard drives...
Page 48 ID, your computer may hang during POST and in SCSI BIOS. SCSI devices installed by Dell are configured correctly during the manufacturing process. You do not need to set the SCSI ID for these SCSI devices.
Page 49 If you attach additional optional SCSI devices, see the documentation for each device for information about setting the appropriate SCSI ID number. NOTICE: Dell recommends that you use only SCSI cables purchased from Dell. Cables purchased elsewhere are not guaranteed to work with Dell computers.
Page 50 power cable hard-drive cable 3. Press in on the tabs on each side of the drive and slide the drive up and out. tabs (2) hard drive Installing a Hard Drive 1. Unpack the replacement hard drive, and prepare it for installation. 2.
Page 51 drive bracket rails (2) screws (4) 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 card, install the controller card in an expansion slot. See the documentation that accompanied the drive and controller card to verify that the configuration is correct for your computer.
Page 52 14. Partition and logically format your drive before you proceed to the next step. See the documentation for your operating system for instructions. 15. Test the hard drive by running the Dell Diagnostics. 16. If the drive you just installed is the primary drive, install your operating system on the hard drive.
Page 53 power cable floppy-drive cable 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. tab (2) floppy drive 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 old drive by removing the two screws that secure each rail to the drive.
Page 54 drive bracket rails (2) screws (4) 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.
Page 55 See the documentation that came with the drive for instructions on installing any software required for drive operation. 8. Enter system setup and update the appropriate Diskette Drive A option to reflect the size and capacity of your new floppy drive. 9. To verify that your computer works correctly, run the Dell Diagnostics. CD/DVD Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 56 2. Connect the new drive to the set of rails that are attached to the inside of the cover. If a set of rails is not attached inside the computer cover, contact Dell.
Page 57 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 removing the two screws that secure each rail to the drive. Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and then inserting and tightening all four screws (two screws on each rail).
Page 58 11. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives: Secondary to Auto. See "Advanced Features" in your User's Guide for more information. 12. Verify that your computer works correctly by running the Dell Diagnostics. Back to Contents Page...
Page 59: Installing A Vrm
Dell Precision™ 450 Computer"). 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 650 computer, see "System Board Components" or for the Dell Precision 450 computer, see "System Board...
Page 60 Dell Precision 450 computer, see "Microprocessor Airflow Shroud — Dell Precision™ 450 Computer"). 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. 7. Connect your computer and devices to electrical outlets, and turn them on.
Page 61: Memory Installation Guidelines
"System Board Components") or the system board label inside your computer. Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com. Memory Module Label Addressing Memory With 4-GB Configurations Your computer supports a maximum of 4GB of memory when using four 1-GB DIMMs.
Page 62: Adding A Memory Module
1 notch 2 memory module securing clips (2) 3 alignment keys 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 with the crossbar in the connector. 3.
Page 63 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 through step 7. 10. When the System Memory total is correct, press <Esc> to exit system setup. 11. Run the Dell Diagnostics to verify that the memory modules are operating properly. Back to Contents Page ...
Page 64 Back to Contents Page Microprocessor Airflow Shroud — Dell Precision™ 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Microprocessor Airflow Shroud Installing the Microprocessor Airflow Shroud CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Page 65 Back to Contents Page Power Supply — Dell Precision™ 650 Computer Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Power Supply NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet.
Page 66 1 power supply 2 power-supply securing tab 3 power-supply release button 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 Supply 1. Slide the power supply cables through the hole into the computer. 2.
Page 67: Removing The System Board
Back to Contents Page System Board Dell Precision™ Workstation 650 and Dell Precision Workstation 450 Service Manual Removing the System Board Replacing the System Board CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. NOTICE: The system board and metal tray are connected and are removed as one piece.
Page 68 5. Slide the system board assembly toward the back of the computer until the assembly clicks into position. 6. Replace any components and cables that you removed from the system board. Back to Contents Page ...

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Dell Precision Workstation 450 Service Manual

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