Dell Precision™ Workstation 350 Service Manual Before You Begin I/O Panel Opening the Computer Cover Control Panel Memory Chassis Intrusion Switch Drives Battery PCI Cards Power Supply AGP Card System Board Microprocessor Closing the Computer Cover Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
Back to Contents Page Battery Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Replacing the Battery A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 10. Close the computer cover and connect your computer and devices to electrical outlets. 11. Enter system setup and restore the settings you recorded before beginning this procedure. 12. Properly dispose of the old battery. For more information see your System Information Guide.
Back to Contents Page Before You Begin Dell Precision™ Workstation 350 Service Manual This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell Precision™ 350 computer. Unless otherwise noted, each procedure assumes that the following conditions exist: l You have performed the steps in "Precautionary Measures." l You have read the safety information in your System Information Guide. l You have opened the computer cover.
Back to Contents Page Chassis Intrusion Switch Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Chassis Intrusion Switch 1. Disconnect the chassis intrusion switch cable connector from the control panel on the front of the chassis. Note the routing of the chassis intrusion cable as you remove it from the chassis.
Back to Contents Page Control Panel Dell Precision™ Workstation 350 Service Manual CAUTION: Before you perform this procedure, see the safety instructions in your System Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
Replacing the Control Panel Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure.
Back to Contents Page Control Panel Dell Precision™ Workstation 350 Service Manual CAUTION: Before you perform this procedure, see the safety instructions in your System Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
Replacing the Control Panel Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure.
Back to Contents Page I/O Panel Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the I/O Panel 1 internal speaker cable 2 chassis intrusion switch cable 3 I/O panel 4 mounting screw 5 control-panel cable 6 front audio cable 7 I/O cable 1. Disconnect the control-panel cable from the control-panel connector on the I/O panel. Disconnect the I/O cable from the I/O panel.
Back to Contents Page Memory Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. You can increase your computer memory by installing memory modules on the system board. For information on the type of memory supported by your computer, see "Specifications" in your User's Guide.
Removing a Memory Module 1. Press out the securing clip at each end of the memory module connector. 2. Grasp the module and pull up. If the module is difficult to remove, gently ease the module back and forth to remove it from the connector. Installing a Memory Module 1. Press out the securing clip at each end of the memory module connector. 1 cutouts (2) 2 connector 3 memory module 4 notch 5 securing clips (2) 2.
Back to Contents Page AGP Card Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing an AGP Card 1. Some AGP cards require a power cable. If the card has a power cable attached to it, disconnect the cable from the card. 2. Remove the filler bracket by raising the hinged lever and sliding the bracket up. 1 hinged lever 2 filler bracket 3.
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.
Back to Contents Page PCI Cards Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Your computer provides four slots for 32-bit 33-MHz cards. For more information, see "Specifications" in your User's Guide or "System Board" in this document. NOTE: To meet PC99 requirements, your Dell™ computer uses only PCI slots. ISA cards are not supported.
1 bracket caught outside of slot 2 bracket within slot 3 fully seated card 4 not fully seated card 8. 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 the top of the card or filler bracket fits around the alignment guide Press the arm into place, securing the card(s) in the computer.
10. Close the computer cover, reconnect the computer and devices to electrical outlets, and turn them on. 11. If you installed a sound card: a. b. 12. Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone, or line-in connectors on the back panel. If you installed an add-in network adapter: a. b. 13. Enter system setup, go to Integrated Devices, and change the setting for Sound to Off.
Back to Contents Page Closing the Computer Cover Dell Precision™ Workstation 350 Service Manual 1. Ensure that all cables are connected, and fold cables out of the way. Gently pull the power cables toward you so that they do not get caught underneath the drives. 2. Ensure that no tools or extra parts are left inside the computer. 3. Close the computer cover: a. Pivot the cover down. b. Press down on the right side of the cover until it closes. c.
Back to Contents Page Opening the Computer Cover Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. 1. 2. Shut down the computer through the Start menu. 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.
Back to Contents Page Drives Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
1 power cable 2 power input connector 1 interface connector 2 colored stripe on edge of interface cable 3 interface cable 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 the other connector. Keyed connectors ensure that the pin-1 wire in the cable (indicated by the colored stripe along one edge of the cable) goes to the pin-1 end of the connector.
1 tabs (2) 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.
1 power cable 2 hard-drive cable 6. Check all connectors to be certain that they are properly cabled and firmly seated. 7. 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. 8. Connect your computer and devices to electrical outlets, and turn them on. See the documentation that came with the drive for instructions on installing any software required for drive operation. 9.
1 rail tabs (2) 2 second hard drive in upper bay 3 first hard drive in lower bay 4 hard drive bay 6. Connect a power cable to the drive. NOTICE: Match the colored strip on the cable with pin 1 on the drive. 7. Locate the extra connector on the drive cable that is attached to your first hard drive and attach the connector to the second hard drive. Your computer uses cable-select drive cables.
Front-Panel Inserts CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. If you are installing a new floppy or CD/DVD drive rather than replacing a drive, remove the front-panel inserts. 1. Open the computer cover to a 90-degree angle and release the insert tabs from inside the computer. 2. Press on the insert until it pops free of the front panel cover.
1 power cable 2 floppy-drive cable 3 floppy-drive connector 3. 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 Drive 1. If you are replacing a 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.
3. Attach the power and floppy-drive cables to the floppy drive. 4. Connect the other end of the floppy-drive cable to the connector labeled "FLOPPY" on the system board. 1 power cable 2 floppy-drive cable 3 floppy-drive connector 5. If you are installing a new floppy drive rather than replacing a drive, remove the front-panel inserts. 6. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 7. Close the computer cover.
1 power cable 2 audio cable 3 CD/DVD drive cable 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 Drive 1. If you are installing a new drive, unpack the drive and prepare it for installation. Check the documentation that accompanied the drive to verify that the drive is configured for your computer. If you are installing an IDE drive, configure the drive for the cable select setting. 2. 3.
1 drive 2 bracket rails (2) 3 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 a card slot. See the documentation that accompanied the drive and controller card to verify that the configuration is correct for your computer. Change any settings necessary for correct configuration. 6. Connect the power, audio, and CD/DVD drive cables to the drive.
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Back to Contents Page Microprocessor Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Microprocessor 1. Disconnect the cooling fan power cable from the FAN connector on the system board. 2. Disconnect the power cable from the 12VPOWER connector on the system board. 3. Lift up the airflow shroud. 4. Remove the microprocessor heat sink: a. b.
1 securing clip (2) 2 latch (2) 3 heat sink 4 microprocessor socket 5 retention base NOTICE: Lay the heat sink down with the thermal grease facing upward. NOTICE: If you are installing a microprocessor upgrade kit from Dell, discard the original heat sink. If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat sink and blower when you install your new microprocessor. 5. Pull the release lever straight up until the microprocessor is released.
Leave the release lever extended in the release position so that the socket is ready for the new microprocessor. Installing the Microprocessor NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer. 1. If the release lever is not extended to the release position, move it to that position. 2. Align pin-1 (the imprinted corner) of the microprocessor and pin-1 of the socket.
Back to Contents Page Power Supply Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide. Removing the Power Supply 1. Disconnect the AC power cable from the back of the power supply. 2. Disconnect the DC power cables from the system board and the drives.
Back to Contents Page System Board Dell Precision™ Workstation 350 Service Manual CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
System-Board Jumper Settings Jumper Setting PSWD (green jumper) Description Password features are enabled. (default) Password features are disabled. CLR_CMOS jumpered Clears the CMOS settings unjumpered Removing the System Board CAUTION: Before you remove any component from the system board, see "Before You Begin." NOTE: The system board and metal tray are attached and are removed as one piece. 1. Remove any components that restrict access to the system board. 2.
1. Transfer components from the existing system board to the replacement system board. 2. Remove the memory modules and install them on the replacement board. CAUTION: The microprocessor package and heat-sink assembly can get hot. To avoid burns, be sure that the package and assembly have had sufficient time to cool before you touch them. 3. Remove the heat-sink assembly and microprocessor from the existing system board and transfer them to the replacement system board. 4.
