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Dell Precision Workstation 340 Service Manual
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Dell Precision Workstation 340 Service Manual

Dell Precision Workstation 340 Service Manual

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Dell Precision™ WorkStation 340 Service Manual

Before You Begin

Safety First—For You and Your Computer
Protecting Against Electrostatic Discharge

Removing and Installing Parts

Computer Cover
Front Panel Door and Hinge Arms
Front-Panel Inserts
Inside Your Computer
System Board Components
Battery
Drives
Computer Memory
Expansion Card Cage (Small Desktop Computer Only)
Expansion Cards
I/O Panel
Control Panel
Chassis Intrusion Switch
Microprocessor
Power Supply
System Board
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.
CAUTION:
A CAUTION indicates a potential for property damage, personal injury, or death.
Information in this document is subject to change without notice.
© 2003 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of Dell Computer 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.
March 2003 Rev. A02

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  • Page 1: Before You Begin

    Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of Dell Computer 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 Back to Contents Page Battery Dell Precision™ WorkStation 340 Service Manual  The 3.0-V CR2032 coin-cell battery installed on the system board provides power to retain the configuration, date, and time information when the computer is turned off. The computer battery is designed to provide years of service without being replaced. However, you may need to replace the battery if configuration or clock-related inconsistencies occur or if one of the following messages is displayed during the boot routine:  Time-of-day not set - please run SETUP program...
  • Page 3 10.  Reconnect the computer to its electrical outlet and turn it on. 11.  Enter system setup, and check the date and time. 12.  If the time and date are still incorrect, contact Dell for technical assistance. Back to Contents Page...

  • Page 4: Removing The Chassis Intrusion Switch

    Back to Contents Page Chassis Intrusion Switch Dell Precision™ WorkStation 340 Service Manual Removing the Chassis Intrusion Switch   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: 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.

  • Page 5: Replacing The Chassis Intrusion Switch

    Replacing the Chassis Intrusion Switch  To replace the chassis intrusion switch, follow the "Removing the Chassis Intrusion Switch" procedures in reverse order. Resetting the Chassis Intrusion Detector 1.  Enter system setup by pressing <F2> during the computer's POST.  For instructions on using system setup, see the User's Guide. 2.

  • Page 6: Opening The Computer Cover

    Back to Contents Page Computer Cover Dell Precision™ WorkStation 340 Service Manual Opening the Computer Cover   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off.

  • Page 7: Closing The Computer Cover

    Closing the Computer Cover 1.  Check all cable connections, especially those that might have come loose during your work. Fold cables out of the way so that they do not obstruct the computer cover. 2.  Ensure that no tools or extra parts (including screws) are left inside the computer. 3.
  • Page 8 Back to Contents Page  ...

  • Page 9: Removing The Control Panel

    Back to Contents Page Control Panel Dell Precision™ WorkStation 340 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.

  • Page 10: Replacing The Control Panel

    1 computer cover tab (remove the CD drive to access this tab) 2 top-panel tabs 3 top panel 4 bottom panel 5 computer cover screw 6 computer cover tabs (2) 2.  To prepare the computer cover for removal, release the three computer cover tabs (one tab is located by the CD drive and two tabs are located by the I/O panel).
  • Page 11 Back to Contents Page Drives Dell Precision™ WorkStation 340 Service Manual   NOTE: Cable ends are color coded so that black identifies the floppy-disk drive cable, yellow the front I/O panel cable, orange the secondary IDE cable, white the SCSI cable, and blue the primary IDE cable.
  • Page 12 6.  If the replacement 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. Drive-Rail Bracket Removal and Replacement   7.  Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the rails and tightening all four screws. 8.
  • Page 13   1 power cable 4 floppy-drive connector 2 floppy cable 5 power connector 3 floppy-cable connector     Removing and Installing a Floppy Drive—Mini-Tower Computer 1.  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. Change any settings necessary for your configuration.
  • Page 14 8.  Gently slide the drive into place until the tabs securely click into position. 9.  Attach the floppy-drive data cable to the back of the floppy drive. 10.  Connect the power cable to the power input connector on the drive.  Close the computer cover, reconnect your computer and devices to their electrical outlets, and turn them on.
  • Page 15   1 audio cable 5 power cable connector 2 removable media drive data cable 6 removable media drive connector (IDE SEC) 3 power cable 7 audio cable connector 4 data cable connector     5.  Press inward on the two tabs on the sides of the drive bay to disengage the drive from the computer. 6.
  • Page 16 10.  Reinstall the removable media drive and bracket assembly by gently sliding the bracket into place until the tabs securely click into position. 11.  If you are installing a drive that has its own controller card, install the controller card in an expansion slot.  ...
  • Page 17   NOTE: If there are no screws with the bracket in the mini-tower computer, contact Dell. See "Getting Help" in your User's Guide for information on contacting Dell. 1.  Unpack the drive and prepare it for installation.
  • Page 18 NOTE: Problems may arise if two expansion cards are trying to use the same resources: memory, I/O addresses, and IRQs. To avoid this type of conflict, see "Interrupt Assignment Conflicts" in your User's Guide and the documentation that came with the card for more information. 11.
  • Page 19 Hard-Drive Shroud and Hard-Drive Removal   5.  Disconnect the power and hard-drive data cables from the drive. Hard-Drive Cable Removal     1 hard-drive data cable 2 power cable 3 hard-drive connector (IDE PRI) 6.  Remove the drive bracket from inside the computer. a.
  • Page 20 8.  Attach the bracket rails to the new hard drive by aligning the four screw holes of the drive and bracket and then inserting and tightening the screws that came with your upgrade kit. 9.  Reinstall the hard-drive bracket by gently sliding the bracket into place until you hear it securely click. Installing a Hard Drive  ...
  • Page 21 19.  Partition and logically format the computer's hard drive before proceeding to the next step.  For partition and format instructions, refer to the documentation that came with the operating system. 20.  Test the hard drive by running the Dell Diagnostics.  See "Solving Problems" in your User's Guide for complete information.
  • Page 22   1 hard-drive data cable 2 power cable 3 hard-drive connector (IDE PRI) 5.  Press in on the tabs on each side of the bracket, and slide it up and out. 6.  If the replacement 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 23: Adding A Second Hard Drive

    18.  Partition and logically format the computer's hard drive before proceeding to the next step.  For partition and format instructions, refer to the documentation that came with the operating system. 19.  Test the hard drive by running the Dell Diagnostics.  See "Finding Solutions" in your User's Guide for complete information.

  • Page 24: Ide Drive Addressing

     Ensure that the rail tabs are positioned at the back of the hard drive.   NOTICE: Do not install a drive into the lower hard-drive bay until you remove the green drive rails from inside the hard-drive cage. 5.  Remove the first hard drive from the upper bay and install it in the lower bay. a.

  • Page 25: General Guidelines

      1 power cable 2 power input connector  The drive's interface connector is a card-edge connector or a header connector, as shown in the following figure. Drive Interface Connectors     1 header connector 2 colored stripe on the cable 3 interface cable  When you attach the interface cable to a drive, be sure to match the colored stripe on the cable to pin 1 of the drive's interface connector.

  • Page 26: Scsi Device Installation Guidelines

    There is no requirement that SCSI ID numbers be assigned sequentially or that devices be attached to the cable in order by ID number.  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 27 NOTICE: Dell recommends that you use only SCSI cables purchased from Dell. Cables purchased elsewhere are not guaranteed to work with Dell computers. Back to Contents Page  ...

  • Page 28: Protecting Against Electrostatic Discharge

    Back to Contents Page Protecting Against Electrostatic Discharge Dell Precision™ WorkStation 340 Service Manual  Static electricity can harm delicate components inside your computer. To prevent static damage, discharge static electricity from your body before you touch any of your computer's electronic components, such as the microprocessor. You can do so by touching an unpainted metal surface on the computer.

  • Page 29: Expansion Cards

    Back to Contents Page Expansion Cards Dell Precision™ WorkStation 340 Service Manual  Your computer provides expansion slots for the following cards:  In the small desktop computer, up to two 32-bit, 33-MHz PCI cards.  In the mini-tower computer, up to four 32-bit, 33-MHz PCI cards.  One 32-bit AGP card. The expansion slot supports an AGP 4x (low profile in the small desktop computer) card operating at 1.5 V.

  • Page 30: Installing An Expansion Card

      NOTE: "Expansion Card Cage (Small Desktop Computer Only)" for information on removing the card cage. Mini-Tower Computer   Installing an Expansion Card   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off.
  • Page 31 Expansion Card Retention Arm—Mini-Tower Computer   5.  If you are installing a new expansion card, remove the filler bracket for an empty card-slot opening. Then continue with step 6. 6.  If you are replacing an expansion card that is already installed in the computer, remove the expansion card.  If necessary, disconnect any cables connected to the card.
  • Page 32 Expansion Card Installation—Mini-Tower Computer     1 card retention arm 2 card connector 3 expansion card 10.  Lower the expansion card retention arm and press it into place, securing the expansion card(s) in the computer. 11.  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 33: Removing An Expansion Card

    5.  Grasp the card by its top corners, and ease it out of its connector. 6.  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.  ...
  • Page 34 the lever and pull the lever up. AGP Slot Filler Bracket Removal—Small Desktop Computer     1 tab 2 indentation AGP Slot Filler Bracket Removal—Mini-Tower Computer   3.  Press the AGP card clip lever toward PCI slot 1. 4.  Slide the AGP card into place. AGP Card Installation  ...

  • Page 35: Removing An Agp Card

    5.  Release the AGP card clip lever, ensuring that the tab on the AGP card clip lever fits into the notch on the front end of the AGP card. 6.  Secure the AGP card bracket by lowering the securing lever on the back panel.  Close the computer cover.

  • Page 36: Expansion Card Cage (Small Desktop Computer Only)

    Back to Contents Page Expansion Card Cage (Small Desktop Computer Only) Dell Precision™ WorkStation 340 Service Manual  The PCI riser board in the small desktop computer has two PCI expansion card slots. Removing the Expansion-Card Cage   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."...

  • Page 37: Front Panel Door And Hinge Arms

    Back to Contents Page Front Panel Door and Hinge Arms Dell Precision™ WorkStation 340 Service Manual  To prevent damage to your computer, the front door is designed to "break away" if it is lifted up too far. If the front door breaks away, you might need to reattach both the front door and the hinge arms.
  • Page 38   1 hinge arms (2) in horizontal position   4.  After the hinge arms snap into place, lower and raise the arms two or three times to properly seat them. 5.  Reattach the front door (see "Reattaching the Front Door").  ...

  • Page 39: Removing Front-Panel Inserts

    Back to Contents Page Front-Panel Inserts Dell Precision™ WorkStation 340 Service Manual Removing Front-Panel Inserts   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer." 1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 10 to 20 seconds, lay the computer on its side, and...

  • Page 40: Replacing Front-Panel Inserts

      Replacing Front-Panel Inserts  To replace a front-panel insert, follow the appropriate procedure, in reverse, in "Removing Front-Panel Inserts." Back to Contents Page  ...

  • Page 41: Inside Your Computer

    Back to Contents Page Inside Your Computer Dell Precision™ WorkStation 340 Service Manual   NOTE: User service access points are color- coded green. Small Desktop Computer     1 removable media drive AC power connector 2 hard drive 10 padlock ring 3 cover release buttons (2)
  • Page 42   1 removable media drive PCI expansion-card slots (4) 2 floppy drive back panel connectors 3 hard drive 10 AC power connector 4 cover release buttons (2) 11 padlock ring 5 speaker 12 power supply 6 chassis intrusion switch 13 microprocessor airflow shroud 7 system board  ...
  • Page 43 Back to Contents Page I/O Panel Dell Precision™ WorkStation 340 Service Manual Removing the I/O Panel—Small Desktop Computer   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: 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.

  • Page 44: Replacing The I/O Panel

      1 control-panel cable 2 front audio cable 3 front I/O cable 4 mounting screw     1.  Disconnect the control-panel cable from the control-panel connector on the I/O panel. 2.  Disconnect the front I/O cable from the front-panel connector on the system board (see "System Board Components"...

  • Page 45: Computer Memory Installation Guidelines

    Computer Memory Installation Guidelines  Before you install new memory modules, download the most recent BIOS for your computer from the Dell | Support website at support.dell.com.  Each memory socket on the system board must be occupied either by a RIMM or a CRIMM.

  • Page 46: Removing A Memory Module

    If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. You must install your original memory modules in pairs either in connectors RIMM1 and RIMM2 or RIMM3 and RIMM4.

  • Page 47: Installing A Memory Module

    9. 9.  When the System Memory total is correct, exit system setup. 10.  Run the Dell Diagnostics to verify that the memory modules are operating properly.  For for information on running the Dell Diagnostics, see your User's Guide.

  • Page 48: Removing The Microprocessor

    Removing the Microprocessor   NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.   CAUTION: The processor can get very hot during normal operation. Be sure that the processor has had sufficient time to cool before you touch it.
  • Page 49 NOTICE: Do not discard the original heat sink and securing clips unless you are installing a microprocessor upgrade kit from Dell. If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat sink, blower, and securing clips when installing your new microprocessor.

  • Page 50: Installing The Microprocessor

     The ZIF socket has a lever-type handle that secures and releases the microprocessor from the ZIF socket 7.  Pull the socket lever up straight up until the microprocessor is released.   NOTICE: Be careful not to bend any of the pins when you remove the microprocessor package from the ZIF socket. Bending the package pins can permanently damage the microprocessor.
  • Page 51 NOTICE: If you are not installing a microprocessor kit from Dell, reuse the original heat sink and securing clips when replacing the microprocessor. 5.  If you are installing a new heat sink, remove the film covering the bottom of the heat sink.

  • Page 52: Removing The Power Supply

    Back to Contents Page Power Supply Dell Precision™ WorkStation 340 Service Manual Removing the Power Supply   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off.

  • Page 53: Replacing The Power Supply

    2 push button   2.  Disconnect the AC power cable from the back of the power supply. 3.  Disconnect the DC power cables from the system board and the drives.  Note the routing of the DC power cables underneath the clips in the computer as you remove them from the system board and drives. It is important to route these cables properly when you replace them to prevent them from being pinched or crimped.

  • Page 54: Safety First-For You And Your Computer

     Before you open the computer cover, perform the following steps in the sequence indicated.   NOTICE: Do not attempt to service the computer yourself, except as explained in your online Dell documentation or otherwise provided to you. Always follow installation and service instructions closely.  ...

  • Page 55: System Board Components

    Back to Contents Page System Board Components Dell Precision™ WorkStation 340 Service Manual  The following figures show the principal connectors and components on the system board. See "System Board" for information on removing the system board. Small Desktop Computer     floppy-drive connector (FLOPPY) 12 PCI expansion-card connectors(2)
  • Page 56   floppy-drive connector (FLOPPY) 13 PCI riser board battery 14 front-panel audio connector removable-media drive connector (IDE SEC) 15 telephony connector hard-drive connector (IDE PRI) 16 CD audio connector front panel connector 17 back panel connectors system board speaker 18 microprocessor power connector password jumper 19 microprocessor/heat sink assembly auxiliary hard-drive activity light connector...
  • Page 57 PSWD Password jumper RIMM_n Memory module socket SERIALn Serial connectors (2) SCSI Auxiliary hard-drive activity light connector SPEAKER System board speaker STANDBY_LED Standby power light TELE Telephony (TAPI) connector USB_LAN Network and Port 1 USB (2) connectors Jumpers System Board Jumpers  ...

  • Page 58: Removing The System Board

    Back to Contents Page System Board Dell Precision™ WorkStation 340 Service Manual Removing the System Board   CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."   NOTICE: 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.
  • Page 59 11.  Run system setup to ensure that your settings are correct and that all system board components are correctly identified. 12.  Run the Dell Diagnostics to verify that the computer is operating properly.  For more information on system setup and the Dell Diagnostics, see your User's Guide. Back to Contents Page...
  • Page 60 Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of Dell Computer 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.

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