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Removing and Replacing Parts in the Midsize Chassis

4-17

Expansion Cards

The computer has a removable expansion-card cage. The expansion-card cage
contains the riser board and any installed expansion cards. Dell recommends
that you remove the expansion-card cage first before removing or installing
expansion cards.

If you are not removing any expansion cards, leave the external cables attached
to the expansion cards.

Expansion-Card Cage

Figure 4-17. Expansion-Card Cage Removal

To remove the expansion-card cage, follow these steps:

1. Rotate the securing lever toward the back of the computer until it is

fully extended.

2. Lift the expansion-card cage up and away from the computer.

To replace the expansion-card cage, keep the cage flush against the chassis to
ensure that the lever engages the notch when the lever is depressed.

securing lever

card cage

Содержание Vostro 400

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Страница 4: ... are registered trademarks and MMX is a trademark of Intel Corporation Microsoft Windows Windows NT and MS DOS are registered trademarks of Microsoft Corporation IBM is a registered trademark of International Business Machines Corporation 3Com is a registered trademark of 3Com Corporation Other trademarks and trade names may be used in this document to refer to either the entities claiming the mar...

Страница 5: ...E Subsystem 1 8 Audio Controller 1 8 PCI Video Card 1 8 NIC 1 9 USB 1 9 Floor Stand 1 9 Thermal Protection 1 9 Computer Service 1 10 System Power Supply 1 10 Pin Assignments for the DC Power Connectors 1 10 DC Power Distribution 1 12 System Board 1 14 Main Memory 1 14 System Board Jumpers 1 15 Interrupt Assignments 1 17 DMA Channel Assignments 1 18 Technical Specifications 1 19 ...

Страница 6: ...rror Messages 3 4 Chapter 4 Removing and Replacing Parts in the Midsize Chassis 4 1 Recommended Tools 4 1 Precautionary Measures 4 2 Floor Stand 4 3 Computer Cover 4 4 Eject Power and Reset Buttons 4 5 Front Panel Inserts 4 6 Control Panel 4 7 Speaker 4 8 Drives 4 9 Externally Accessible Drive Assemblies 4 10 Hard Disk Drive Bracket 4 12 Hard Disk Drive 4 13 System Power Supply 4 14 Processor Fan ...

Страница 7: ... and Reset Buttons 5 5 Front Panel Inserts 5 6 Control Panel 5 8 Speaker 5 9 Drives 5 10 Externally Accessible Drive Assemblies 5 11 Hard Disk Drive Bracket 5 15 Hard Disk Drive 5 16 Third SCSI Hard Disk Drive 5 17 System Power Supply 5 19 Processor Fan 5 20 System Board Components 5 21 Expansion Cards 5 22 Expansion Card Cage 5 22 Expansion Card 5 23 Riser Board 5 24 DIMMs 5 25 Processor SEC Cart...

Страница 8: ...Jumpers 1 15 Figure 4 1 Floor Stand Removal 4 3 Figure 4 2 Computer Cover Removal 4 4 Figure 4 3 Padlock Removal 4 4 Figure 4 4 Eject Power and Reset Button Removal 4 5 Figure 4 5 Front Panel Insert Removal 4 6 Figure 4 6 Control Panel Removal 4 7 Figure 4 7 Speaker Removal 4 8 Figure 4 8 Drive Hardware 4 9 Figure 4 9 3 5 Inch Diskette Drive Removal 4 10 Figure 4 10 5 25 Inch Drive Assembly Remova...

Страница 9: ...5 25 Inch Drive Assembly Removal 5 13 Figure 5 12 5 25 Inch Drive Removal 5 14 Figure 5 13 Hard Disk Drive Bracket Removal 5 15 Figure 5 14 Hard Disk Drive Removal 5 16 Figure 5 15 Cabling for SCSI Subsystem With Three SCSI Hard Disk Drives 5 17 Figure 5 16 Third SCSI Hard Disk Drive Assembly Removal 5 17 Figure 5 17 Third SCSI Hard Disk Drive Removal 5 18 Figure 5 18 System Power Supply Removal 5...

Страница 10: ...e 1 2 Jumper Descriptions 1 16 Table 1 3 Interrupt Assignments 1 17 Table 1 4 DREQ Line Assignments 1 18 Table 1 5 Technical Specifications 1 19 Table 3 1 POST Beep Codes 3 2 Table 3 2 System Error Messages 3 5 Table A 1 System Setup Categories A 3 ...

Страница 11: ...xi ...

Страница 12: ...ible PCs and prior training in IBM compatible PC troubleshooting techniques In addition to information provided in this manual and the User s Guide that came with the system Dell provides theDiagnostics andTroubleshooting Guide for troubleshooting pro cedures and instructions on using the Dell Diagnostics to test the computer system WARNING A WARNING indicates the potential for bodily harm and pro...

Страница 13: ...stem board contains the system s microprocessor and cache circuitry These Dell computers incorporate the high performance PCI local bus as well as the ISA expansion bus These buses are built into the system board which also inte grates the processor optional second processor memory controller hard disk drive controller and other elements of the basic computer The Pentium II microprocessor contains...

Страница 14: ...o card Integrated 10 100 Mbps 3Com Ethernet NIC Integrated USB controller with two USB compliant connectors Thermal protection Main system memory consisting of 64 to 512 MB of high speed EDO DIMMs that provide ECC functionality SMART compliant hard disk drives and SMART support in the system BIOS which warns you at system start up if a hard disk drive has become unreliable Quick tests feature in t...

Страница 15: ... front panel reset button should be used only when the computer cannot be rebooted by pressing Ctrl Alt Del Before you use the reset button to initiate a hardware reset close any open application programs and files if possible back right side left side front back top front bottom Midsize Computer Mini Tower Computer ...

Страница 16: ... Panel Features diskette drive access indicator reset button hard disk drive access indicator power button power indicator Midsize Computer Mini Tower Computer power indicator hard disk drive access indicator power button reset button diskette drive access indicator ...

Страница 17: ...le hard disk drive bracket power supply system board voltage selection switch AC power receptacle serial port 1 connector serial port 2 connector keyboard connector mouse connector video connector card slot openings 5 NIC connector microphone jack line out jack line in jack 3 5 inch diskette drive expansion card cage chassis USB connectors 2 ...

Страница 18: ...on Subsystem The Dell WorkStation 400 systems offer advanced expansion subsystems that can support a mixture of traditional ISA expansion cards called legacy cards Plug and Play ISA expansion cards and PCI expansion cards The operating system or the ISA Configuration Utility ICU included with the system pro vides a means of avoiding resource conflicts that might arise from such an arrangement line...

Страница 19: ...xpansion card connectors and five PCI expansion card connectors The two ISA expansion card connectors share expansion slot space with two of the PCI expansion card connectors resulting in a total of five expansion slots The expansion card connectors are located on a riser board see Figure 1 5 Figure 1 5 Riser Board Expansion Card Connectors Hard Disk Drive Options The hard disk drive bracket is lo...

Страница 20: ...k Drive Options For detailed information about the data storage subsystem see Chapter 9 Installing Drives in the User s Guide Audio Controller The system board has a built in 16 bit Crystal CS4236B audio controller chip and connectors on the back panel for connecting the computer to external audio devices such as speakers headphones and microphone The controller supports all the sound functions fo...

Страница 21: ...ction point for multiple USB compliant devices USB compliant devices can be connected and disconnected while the computer is running Floor Stand The midsize computer can be used in a horizontal or vertical orientation when using an available floor stand The floor stand is attached to the left side of the midsize computer The floor stand is permanently attached to the bottom of the mini tower compu...

Страница 22: ...o their corresponding power input connectors on the system board or drives Pin Assignments for the DC Power Connectors The power supply output voltages can be measured at the back wire side of the connectors without disconnecting them Figures 1 6 1 7 and 1 8 show the wire side of the connectors Table 1 1 DC Voltage Ranges Voltage Range Maximum Output Current1 3 3 VDC 3 15 to 3 45 VDC 14 0 A 5 VDC ...

Страница 23: ...hat all power supply output voltages are within the ranges specified in Table 1 1 Figure 1 6 DC Power Connector P1 Figure 1 7 DC Power Connectors P2 P3 P4 P5 P6 and P9 11 1 PWRGOOD 3 orange 12 VDC blue 12 VDC yellow 5 VFP purple common black 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 P1 5 VDC red 5 VDC red 5 VDC red 5 VDC red 5 VDC red 5 VDC red common black common black common black PSON 1 gra...

Страница 24: ...bout DC power distribution Power supply connector identification Power cable connections for diskette tape CD ROM and hard disk drives Power distribution to sockets and connectors on the system board Figure 1 9 DC Power Cables 1 2 3 4 3 3 VDC blue white common black common black 5 P7 6 3 3 VDC blue white 3 3 VDC blue white common black P7 P6 P5 P4 P3 P2 P1 P9 ...

Страница 25: ...D MOUSE DIMM_A DIMM_B DIMM_C DIMM_D main memory sockets P4 FAN RISER internal hard disk drive1 P2 optional drive P5 P6 5 VFP RTC NVRAM P7 3 3 VDC riser board system board optional drive internal hard disk drive1 POWER2 processor core regulator 1 8 2 8 VDC 2 5 VDC FUS FUS 2 5 V converter 1 5 V converter 1 5 VDC SLOT1_SEC 1 8 2 8 VDC 2 5 VDC P9 optional drive2 1 When a third SCSI hard disk drive is ...

Страница 26: ... recommends populating the sockets in order from A to D DIMM sockets do not have to contain DIMMs of the same size DIMMs may be installed in any order See DIMMs in Chapter 4 or Chapter 5 for information on removing and replacing DIMMs serial port 2 connector parallel serial port 1 connectors stacked diskette tape drive interface connector DSKT pin 1 corner front of computer primary EIDE interface ...

Страница 27: ...System Overview 1 15 System Board Jumpers Figure 1 12 System Board Jumpers jumpered unjumpered ...

Страница 28: ...alled reserved do not change RSRVD2 RSRVD1 Reserved Not installed reserved do not change 300MHZ Microprocessor speed Installed if the micro processor s internal speed is 300 MHz 266MHz Microprocessor speed Installed if the micro processor s internal speed is 266 MHz 233MHZ Reserved Not installed reserved do not change BIOS Reserved Not installed reserved do not change PSWD Password enable disable ...

Страница 29: ...er to indicate that device con nected to parallel port requires service IRQ8 Generated by keyboard controller for each tick of RTC IRQ9 Available for use by expansion card IRQ10 Available for use by expansion card IRQ11 Available for use by expansion card IRQ12 Generated by the PS 2 mouse to indicate that it requires service IRQ13 Generated by math coprocessor to indicate coprocessor error IRQ14 G...

Страница 30: ...REQ1 Available DREQ2 Generated by super I O controller to initiate DMA cycle for attached diskette drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA controller DREQ5 Available DREQ6 Available DREQ7 Available NOTE The integrated audio controller is assigned one or two DMA channels automatically during system start up ...

Страница 31: ...tem chip set Intel 82440FX PCIset Data bus width 64 bits Address bus width 32 bits DMA channels seven Interrupt levels 15 Flash EPROM 1 Mb Expansion Bus Bus types PCI and ISA Bus speed PCI 33 3 MHz ISA 8 33 MHz PCI expansion card connectors five two PCI connectors share card slot open ings with the two ISA connectors ISA expansion card connectors two both ISA connectors share card slot openings wi...

Страница 32: ... dedicated to a 3 5 inch dis kette drive two 5 25 inch bays for half height diskette drives tape drives or CD ROM drives Mini tower computer one 3 5 inch bay dedicated to a 3 5 inch diskette drive three 5 25 inch bays for half height diskette drives tape drives or CD ROM drives Internally accessible bays Midsize computer one 1 6 inch high bay and one 1 inch high bay for EIDE or SCSI hard disk driv...

Страница 33: ...SB two USB compliant connectors Audio line in miniature audio jack Audio line out miniature audio jack Audio microphone in miniature audio jack Internally accessible EIDE drive two 40 pin connectors on PCI local bus Diskette tape drive 34 pin connector CD ROM drive audio interface 4 pin connector Video Video type PCI video card see manufacturer s specifications Key Combinations Ctrl Alt Del restar...

Страница 34: ...ector yellow LED Power DC power supply Wattage 230 W Heat dissipation 600 BTU nominal Voltage 90 to 135 V at 60 Hz 180 to 265 V at 50 Hz Backup battery 3 V CR2032 coin cell Physical Midsize computer Height 16 5 cm 6 5 inches Width 41 9 cm 16 5 inches Depth 44 5 cm 17 5 inches Weight minimum 12 7 kg 28 lb Mini tower computer Height 44 4 cm 17 5 inches Width 20 6 cm 8 1 inches Depth 43 7 cm 17 2 inc...

Страница 35: ... 200 Hz for 30 min Maximum shock Operating half sine wave form 50 G for 2 ms Storage half sine wave form 110 G for 2 ms square wave form 27 g for 15 ms Altitude Operating 16 to 3048 m 50 to 10 000 ft Storage 16 to 10 600 m 50 to 35 000 ft The maximum operating temperature of 35 C 95 F is for altitudes below 914 6 m 3000 ft Above 914 6 m 3000 ft the maximum operating temperature is reduced Table 1 ...

Страница 36: ...1 24 Dell WorkStation 400 Systems Service Manual ...

Страница 37: ...riate troubleshooting procedure to use After the user describes the problem follow these steps 1 Ask the user to back up any data on the hard disk drive if the system s condition permits See the operating system documentation and Appendix D Maintaining the System in the User s Guide for information about backing up data 2 Ask the user to try to duplicate the problem by repeating the operations he ...

Страница 38: ...rmly attached to one of the serial port connectors and its captive screws must be secure enough to ensure a firm connection 4 Verify that any devices connected to the serial ports parallel port and USB connectors are properly attached Each of the serial parallel and USB interface cables must be firmly attached to an appropriate connector on the back of the computer as well as to the interface conn...

Страница 39: ... some of which can occur simultaneously It may be necessary to reboot the system several times in order to complete all of these steps To observe problem indications during the boot routine follow these steps 1 Insert the Dell Diagnostics Diskette into drive A Turn on all peripher als and the computer If the computer is already on press the reset button or Ctrl Alt Del to reboot the system 2 Check...

Страница 40: ...r Yes See Running the Dell Diagnostics found later in this chapter No Proceed to step 6 6 Insert another copy of the diagnostics diskette into the diskette drive and reboot the system Does the Diagnostics Menu appear Yes See Running the Dell Diagnostics found later in this chapter No Proceed to the next section Internal Visual Inspection Internal Visual Inspection A simple visual inspection of a c...

Страница 41: ...e computer cover 7 Reconnect the computer and any attached peripherals to their power sources and turn them on Does the problem appear to be resolved Yes No further steps are necessary No Proceed to Eliminating Resource Conflicts Running the Dell Diag nostics and Getting Help found later in this chapter Eliminating Resource Conflicts Devices within or connected to the computer may require dedicate...

Страница 42: ...d If no errors are found in RAM the diagnostics loads and the Diagnostics Menu appears This menu lets you choose the following options or exit to the MS DOS prompt Run Quick Tests Runs selected tests from all test groups to quickly locate a failure or to indicate where further testing is needed to isolate a failure Run All Tests Runs all tests for a thorough test of the system Run Specific Tests T...

Страница 43: ...un the appropriate tests in the Dell Diagnostics to help isolate the source of the problem See Running the Dell Diagnostics in Chapter 2 POST Beep Codes If the monitor cannot display error messages during the POST the system may emit a series of beeps that identifies the problem or that can help you identify a faulty component or assembly Table 3 1 lists the beep codes that may be gener ated durin...

Страница 44: ...on failure Faulty or improperly seated DIMMs or defective system board 1 3 2 No memory installed No memory installed or faulty or improperly seated DIMM 1 3 3 1 3 4 1 4 1 1 4 2 2 1 1 through 2 4 4 Chip or data line failure in the first 64 KB of main memory Odd even logic failure in the first 64 KB of main memory Address line failure in the first 64 KB of main memory Parity failure in the first 64 ...

Страница 45: ...2 1 4 2 2 4 2 3 4 2 4 No timer tick Shutdown failure Gate A20 failure Unexpected interrupt in pro tected mode Defective system board 4 3 1 Memory failure above address 0FFFFh Faulty or improperly seated DIMMs 4 3 3 Timer chip counter 2 failure Defective system board 4 3 4 Time of day clock stopped Bad battery or defective sys tem board 4 4 1 Serial parallel port test failure Faulty I O chip defect...

Страница 46: ...en made The following messages indicate a fatal error Bad error correction code ECC on disk read Controller has failed Data error Gate A20 failure Hard disk controller failure Hard disk drive read failure Hard disk failure Keyboard clock line failure Keyboard controller failure Keyboard data line failure Keyboard stuck key failure No timer tick interrupt Shutdown failure Terminator processor card ...

Страница 47: ...rd disk drive subsystem defec tive system board Data error System received un recoverable data read error from diskette or hard disk drive Faulty diskette diskette drive or hard disk drive Decreasing available memory Read write failure during POST prevents system from using available memory One or more DIMMs faulty or improperly seated Diskette drive 0 seek failure Diskette drive 1 seek failure Di...

Страница 48: ...ion settings in System Setup program improperly con nected hard disk drive cable faulty hard disk controller subsystem defective system board or loose power cable Invalid con figuration information please run SETUP program System Setup program contains incorrect system configuration settings Incorrect configuration settings in System Setup program or faulty battery Keyboard clock line failure Keyb...

Страница 49: ...value During memory test value read at address was incorrect Faulty or improperly seated DIMMs or defec tive system board Memory alloca tion error Software in use con flicts with operating system application pro gram or utility Faulty application pro gram or utility Memory tests terminated by keystroke Memory test did not complete POST memory test termi nated by user pressing Spacebar Network card...

Страница 50: ...y diskette diskette tape drive subsystem or hard disk drive sub system defective system board Not a boot diskette No operating system on diskette No operating system on diskette Plug and Play Configuration Error System encountered problem in trying to configure one or more expansion cards System resource conflict Read fault Requested sec tor not found MS DOS cannot read from diskette or hard disk ...

Страница 51: ...sor improperly installed or not installed Time of day clock stopped System battery low Defective battery or faulty chip defective sys tem board Time of day not set Time or Date settings in System Setup program incorrect or system bat tery bad Incorrect Time or Date settings or defective sys tem battery Timer chip counter 2 failed Timer circuit on system board malfunctioning Defective system board ...

Страница 52: ...or conditions Unreliable or defective drive Warning Fan failure The system will power off POST queried fan sta tus The fan reported a failure Faulty or missing proces sor fan Warning Previous shutdown due to fan failure During the previous operating session the Dell ThermalShutdown Service or the system BIOS shut down the computer Processor fan failed dur ing the previous operating session Write f...

Страница 53: ...dure assumes the following You have performed the steps in Precautionary Measures found later in this chapter You have removed the computer cover You can replace or reinstall a part by performing the removal procedure in reverse order unless additional information is provided Recommended Tools Most of the procedures in this chapter require the use of one or more of the fol lowing tools Small flat ...

Страница 54: ...llowing steps in the sequence indicated 1 Turn off the computer and any attached peripherals 2 Disconnect the computer and any attached peripherals from their power sources to reduce the potential for personal injury Also dis connect any telephone or telecommunication lines from the computer 3 Wear a wrist grounding strap and clip it to an unpainted metal sur face such as the padlock ring on the b...

Страница 55: ...eps 1 Place the right side of the computer on a flat work surface 2 Unscrew the floor stand screw Use your fingers or a wide flat blade screwdriver to unscrew the floor stand screw 3 Pull the floor stand away from the computer Disengage the three orientation nubs that position and help hold the floor stand to the computer floor stand screw ...

Страница 56: ...ress the two securing buttons until the cover is free to swing up 3 Lift the cover off the hooks at the front of the chassis Four plastic hooks on the inside of the front part of the cover secure it to the chassis Before you reinstall the cover fold all cables out of the way so that they do not interfere with the cover or with the proper airflow inside the computer securing button front of compute...

Страница 57: ... back of the cover facing you 2 To remove the 3 5 inch diskette drive eject button pull gently on the plastic part of the button until it comes free 3 To remove the power button or the reset button use a small screw driver and push in on the two or three plastic clips that hold the button to the computer cover When these clips are released the button comes free from the front panel of the computer...

Страница 58: ... surface with the front of the cover facing you 2 From the front of the cover use your thumbs to push inward on the insert until it slides off the two posts To replace a front panel insert position the front panel insert and then press the ring tabs over the posts If necessary use a 1 4 inch nutdriver to help push on the ring tabs ring tabs 2 posts 2 computer cover upside down 5 25 inch front pane...

Страница 59: ...eaker connector from the control panel 3 Disconnect the control panel cable from the PANEL connector on the system board see Figure 4 16 4 Remove the mounting screw securing the control panel to the chassis 5 Detach the control panel from the chassis hooks Note the routing of the control panel cable as you remove it from the chassis speaker connector control panel control panel cable screw chassis...

Страница 60: ...gure 4 7 Speaker Removal To remove the speaker follow these steps 1 Remove the hard disk drive bracket 2 Disconnect the speaker connector from the control panel 3 Lift the speaker out of the retaining slots on the front of the chassis speaker connector speaker ...

Страница 61: ...com puter Refer to this figure when you perform any of the procedures in the following subsections Figure 4 8 Drive Hardware diskette tape drive interface cable DC power cable DSKT connector externally accessible drive bays hard disk drive bracket primary EIDE connector IDE1 secondary EIDE connector IDE2 3 5 inch diskette drive EIDE cable ...

Страница 62: ...e drive 2 Remove the bracket mounting screw 3 Rotate the left side of the 3 5 inch diskette drive assembly up and lift the assembly out of the chassis 4 Remove the two drive mounting screws from the left side of the drive and remove the drive from the bracket When you replace the 3 5 inch diskette drive be sure the two hooks on the right side of the bracket engage the mounting holes in the side of...

Страница 63: ...h side of the drive and slide the drive assembly forward to remove it 3 Remove the four screws attaching the 5 25 inch drive to the mounting plate and lift the drive out of the mounting plate see Figure 4 11 Figure 4 11 5 25 Inch Drive Removal When you replace the 5 25 inch drive align the front of the drive flush with the tab at the front of the mounting plate Insert the four screws and tighten t...

Страница 64: ...hard disk drive bracket to the front of the chassis 3 Grasp the handle on the front of the bracket and rotate the front of the bracket up until the hooks are free from the chassis 4 Lift the hard disk drive bracket out of the computer When you reinstall the hard disk drive bracket place the lower back tab of the hard disk drive bracket into position be sure that the opening in the lower back tab i...

Страница 65: ...attach the hard disk drive to the hard disk drive bracket One hard disk drive attaches to the hard disk drive bracket at the sides of the drive The other hard disk drive attaches to the hard disk drive bracket at the bottom of the drive 3 Slide the drive out of the hard disk drive bracket hard disk drive drive mounting screws 4 for side mounted drive hard disk drive bracket drive mounting screws 4...

Страница 66: ...er supply from the securing tab labeled RELEASE and rotate it to the right until it stops Press the securing tab to the left to release the power supply 3 Disconnect the DC power cables from the system board and the drives 4 Lift the front end of the system power supply and move it to the right to disengage the power supply from the slot in the chassis 5 Lift the system power supply from the compu...

Страница 67: ...4 14 2 Squeeze the latch and disconnect the fan power cable from the proces sor fan connector see Figure 4 16 3 Remove the airflow shroud 4 Gently pull the plastic lock and push down on the fan to disengage the four latching tabs holding the fan to the back of the chassis 5 Remove the fan Pull the fan slightly forward and out of the computer power cable processor fan connector latching tabs 4 fan ...

Страница 68: ...primary EIDE interface connector IDE1 pin 1 corner riser board connector RISER battery socket BATTERY NIC connector configuration jumpers processor fan connector FAN line out jack line in jack control panel connector PANEL 3 3 V power input connector POWER2 mouse keyboard connectors stacked main power input connector POWER1 primary SEC cartridge SLOT1_PRI DIMM sockets 4 CD ROM drive audio interfac...

Страница 69: ...e not removing any expansion cards leave the external cables attached to the expansion cards Expansion Card Cage Figure 4 17 Expansion Card Cage Removal To remove the expansion card cage follow these steps 1 Rotate the securing lever toward the back of the computer until it is fully extended 2 Lift the expansion card cage up and away from the computer To replace the expansion card cage keep the ca...

Страница 70: ...nnect any cables from the expansion card being removed 2 Remove the expansion card cage 3 Remove the retaining screw from the card mounting bracket 4 Grasp the expansion card by its corners and carefully remove it from the expansion card connector expansion card card slot opening card mounting bracket retaining screw expansion card connector riser board ...

Страница 71: ...rd cage and all expansion cards 2 Place the expansion card cage on a flat work surface with the riser board facing up 3 Remove the two riser board mounting screws 4 Slide the riser board over as shown by the arrow in Figure 4 19 until it stops then lift the riser board away from the expansion card cage riser board expansion card cage slots 2 riser board mounting screws 2 ...

Страница 72: ...4 2 Push outward on the DIMM socket s securing clips until the DIMM is released from its socket 3 Lift the DIMM away from the socket Figure 4 21 DIMM Installation To replace a DIMM press the DIMM fully into the socket see step 1 of Figure 4 21 while closing the securing clips to lock the DIMM into the socket see step 2 of Figure 4 21 securing clips 2 DIMM securing clips 2 1 2 DIMM ...

Страница 73: ...ud from the processor s Squeeze both pairs of tabs on top of the shroud and lift it out of the chassis 3 Unscrew and remove the two thumbscrews that secure the heat sink to the system board 4 Press the SEC cartridge release latches inward until they snap into position WARNING The processor SEC cartridge heat sink assembly can get extremely hot Be sure the assembly has had sufficient time to cool b...

Страница 74: ...de bracket assembly with the heat sink toward the left side of the chassis and firmly seat the assembly You must use up to 25 pounds of force to seat the SEC cartridge in its connector Install the two thumbscrews that secure the heat sink to the system board If you are installing a secondary SEC cartridge heat sink assembly you need to remove the terminator card from the SLOT1_SEC connector on the...

Страница 75: ... pry the system battery out of its socket with your fingers or with a blunt nonconducting object such as a plastic screwdriver When you replace the system battery orient the new battery with the facing up Insert the battery into its socket and snap it into place WARNING There is a danger of the new battery exploding if it is in correctly installed Replace the battery only with the same or equivale...

Страница 76: ...ecures the system board to the bottom of the computer 8 Slide the system board toward the front of the chassis until it stops 9 Carefully lift the system board out of the chassis be sure to lift evenly and not twist the system board If you are replacing a system board remove the DIMMs the primary processor SEC cartridge heat sink assembly and the terminator card or secondary proces sor assembly an...

Страница 77: ...edure assumes the following You have performed the steps in Precautionary Measures found later in this chapter You have removed the computer cover You can replace or reinstall a part by performing the removal procedure in reverse order unless additional information is provided Recommended Tools Most of the procedures in this chapter require the use of one or more of the fol lowing tools Small flat...

Страница 78: ...llowing steps in the sequence listed 1 Turn off the computer and any attached peripherals 2 Disconnect the computer and any attached peripherals from their power sources to reduce the potential for personal injury Also dis connect any telephone or telecommunication lines from the computer 3 Wear a wrist grounding strap and clip it to an unpainted metal sur face such as the padlock loop on the back...

Страница 79: ...e left side of the computer press the release button at the bottom left corner of the front bezel 3 Lift the bottom of the cover allowing it to pivot up toward you 4 Disengage the tabs that secure the cover to the top of the chassis and lift the cover away Before you reinstall the cover fold all cables out of the way so that they do not interfere with the cover or with the proper airflow inside th...

Страница 80: ... Bezel Removal To remove the front bezel follow these steps 1 Press the tab release marked with the icon 2 Tilt the bezel away from the chassis 3 Disengage the two retaining hooks at the bottom of the bezel and pull the bezel away from the chassis tab release retaining hooks 2 ...

Страница 81: ...rk surface with the back of the bezel facing up 2 To remove the 3 5 inch diskette drive eject button pull gently on the plastic part of the button until it comes free 3 To remove the power button or the reset button use a small screw driver and push in the two or three plastic clips that hold the button to the bezel When these clips are released the button comes free from the bezel power button re...

Страница 82: ...s 1 Hold the bezel with the front facing you 2 From the front of the bezel use your thumbs to press inward on the insert until it slides off the two posts To replace a 5 25 inch front panel insert position the two ring tabs over the posts on the inside of the bay opening and then press the ring tabs over the posts posts 2 front bezel ring tabs 2 5 25 inch front panel insert ...

Страница 83: ...teps 1 Hold the bezel with the front facing you 2 Inside the bezel press the eject button mechanism toward the front panel to snap the plastic insert out of its opening To replace the front panel insert for the 3 5 inch bay work from outside the bezel Place the insert in position and press it into the opening front of bezel back of bezel eject button mechanism ...

Страница 84: ... drive bracket 2 Disconnect the control panel cable from the PANEL connector on the system board see Figure 5 20 3 Remove the mounting screw securing the control panel to the chassis 4 Detach the control panel from the chassis hooks Note the routing of the control panel cable as you remove it from the chassis control panel control panel cable screw chassis hooks 2 ...

Страница 85: ...er Figure 5 7 Speaker Removal To remove the speaker follow these steps 1 Remove the hard disk drive bracket 2 Disconnect the speaker connector from the control panel 3 Lift the speaker out of the retaining slots on the front of the chassis speaker connector speaker ...

Страница 86: ...puter Refer to this figure when you perform any of the procedures in the following subsections Figure 5 8 Drive Hardware diskette tape drive interface cable DC power cable DSKT connector hard disk drive bracket primary EIDE connector IDE1 secondary EIDE connector IDE2 EIDE cable 3 5 inch diskette drive externally accessible drive bays ...

Страница 87: ... drive assembly follow these steps 1 Disconnect the DC power cable and the interface cable from the back of the 3 5 inch diskette drive 2 Press the retaining tab release button and pull the drive assembly for ward to remove it 3 Remove the drive mounting screw from the left side of the drive and remove the drive from the bracket see Figure 5 10 retaining tab release button ...

Страница 88: ...nual Figure 5 10 3 5 Inch Diskette Drive Removal When you replace the 3 5 inch diskette drive be sure the two hooks on the right side of the bracket engage the mounting holes in the side of the 3 5 inch diskette drive hooks 2 drive mounting screw ...

Страница 89: ...l To remove a 5 25 inch drive assembly from the middle or lower drive bay fol low these steps 1 Disconnect the DC power cable and the interface cable from the back of the drive 2 Press the two retaining tabs one on each side of the drive and slide the drive assembly forward to remove it retaining tabs 2 ...

Страница 90: ...rive out of the mounting plate see Figure 5 12 Figure 5 12 5 25 Inch Drive Removal When you replace the 5 25 inch drive align the front of the drive flush with the tabs at the front of the mounting plate Insert the four screws and tighten them in the order stamped on the bottom of the 5 25 inch drive mounting plate screws 4 retaining tabs 2 ...

Страница 91: ...e bracket to the drive cage in the chassis 3 Grasp the bracket and rotate it outward from the chassis until the slid ing tab clears the slide rail on the drive cage 4 Lift the hard disk drive bracket slightly to free the hinge tabs and remove it from the computer When you reinstall the hard disk drive bracket insert the bracket s hinge tabs into the chassis slots so that the tabs hook over the slo...

Страница 92: ... hard disk drive to the hard disk drive bracket One hard disk drive attaches to the hard disk drive bracket at the sides of the drive The other hard disk drive attaches to the hard disk drive bracket at the bottom of the drive 3 Slide the drive out of the hard disk drive bracket hard disk drive hard disk drive bracket drive mounting screws 4 for bottom mounted drive sliding tab drive mounting scre...

Страница 93: ...tallation of a third SCSI hard disk drive in its own drive bracket Figure 5 16 Third SCSI Hard Disk Drive Assembly Removal To remove the third SCSI hard disk drive assembly follow these steps 1 Remove the expansion card cage 2 Remove the hard disk drive bracket third SCSI hard disk drive 68 pin SCSI cable SCSI host adapter card slots 2 drive tabs 2 screw chassis interior divider cable connectors 2...

Страница 94: ...f the drive assembly away from the chassis and remove the assembly from the chassis 6 Remove the four screws attaching the SCSI hard disk drive to the drive bracket see Figure 5 17 Figure 5 17 Third SCSI Hard Disk Drive Removal When you replace the SCSI hard disk drive assembly be sure the two tabs on the left side of the bracket engage the slots on the chassis interior divider screws 4 drive driv...

Страница 95: ...ecuring tab to release the power supply 3 Disconnect the DC power cables from the system board and the drives 4 Facing the left side of the computer move the front end of the system power supply toward you and lift it to disengage the power supply from the slot in the chassis 5 Lift the system power supply from the computer When you reinstall the power supply place the power supply detent link ove...

Страница 96: ... 18 2 Squeeze the latch and disconnect the fan power cable from the processor fan connector see Figure 5 20 3 Remove the airflow shroud 4 Gently pull the plastic lock and push down on the fan to disengage the four latching tabs holding the fan to the back of the chassis 5 Remove the fan Pull the fan slightly forward and out of the computer power cable processor fan connector latching tabs 4 fan lo...

Страница 97: ...uter primary EIDE interface connector IDE1 pin 1 corner riser board connector RISER battery socket BATTERY NIC connector configuration jumpers processor fan connector FAN line out jack line in jack control panel connector PANEL 3 3 V power input connector POWER2 mouse keyboard connectors stacked main power input connector POWER1 primary SEC cartridge SLOT1_PRI DIMM sockets 4 CD ROM drive audio int...

Страница 98: ...o the expansion cards Expansion Card Cage Figure 5 21 Expansion Card Cage Removal To remove the expansion card cage follow these steps 1 Rotate the securing lever toward the back of the computer until it is fully extended 2 Slide the expansion card cage out of the computer To replace the expansion card cage align the tabs on the left and right sides of the expansion card cage with the slots on the...

Страница 99: ... steps 1 Disconnect any cables from the expansion card being removed 2 Remove the expansion card cage 3 Remove the retaining screw from the card mounting bracket 4 Grasp the expansion card by its corners and carefully remove it from the expansion card connector expansion card card mounting bracket retaining screw expansion card connector riser board ...

Страница 100: ...ge and all expansion cards 2 Place the expansion card cage on a flat work surface with the riser board facing up 3 Remove the two riser board mounting screws 4 Slide the riser board away from the securing lever until it stops then lift the riser board away from the expansion card cage riser board riser board mounting screws 2 expansion card cage slots 2 securing lever ...

Страница 101: ...gure 5 18 2 Push outward on the DIMM socket s securing clips until the DIMM is released from its socket 3 Lift the DIMM away from the socket Figure 5 25 DIMM Installation To replace a DIMM press the DIMM fully into the socket see step 1 of Figure 5 25 while closing the securing clips to lock the DIMM into the socket see step 2 of Figure 5 25 securing clips 2 DIMM securing clips 2 1 2 DIMM ...

Страница 102: ...way from the processor airflow shroud 4 Remove the airflow shroud from the processor s Squeeze both pairs of tabs on top of the shroud and lift it out of the chassis 5 Unscrew and remove the two thumbscrews that secure the heat sink to the system board 6 Press the SEC cartridge release latches inward until they snap into position WARNING The processor SEC cartridge heat sink assembly can get extre...

Страница 103: ...the guide bracket assembly with the heat sink toward the bottom of the chassis and firmly seat the assembly You must use up to 25 pounds of force to seat the SEC cartridge in its connector Install the two thumbscrews that secure the heat sink to the system board If you are installing a secondary SEC cartridge heat sink assembly you need to remove the terminator card from the SLOT1_SEC connector on...

Страница 104: ... the system battery out of its socket with your fingers or with a blunt nonconducting object such as a plastic screwdriver When you replace the system battery orient the new battery with the facing up Insert the battery into its socket and snap it into place WARNING There is a danger of the new battery exploding if it is in correctly installed Replace the battery only with the same or equivalent t...

Страница 105: ...rd to the side of the chassis 7 Slide the system board toward the front of the chassis until it stops 8 Carefully lift the system board out of the chassis be sure to lift evenly and not twist the system board If you are replacing a system board remove the DIMMs the primary processor SEC cartridge heat sink assembly and the terminator card or secondary proces sor assembly and install them on the re...

Страница 106: ...5 30 Dell WorkStation 400 Systems Service Manual ...

Страница 107: ...n on or reboot the system 2 Press Ctrl Alt Enter immediately after the monitor displays the message Press CTRL ALT ENTER for System Setup If you wait too long the operating system begins to load into memory the message disappears and you cannot enter the System Setup program Letthe system complete the load operation then shut down the system and try again NOTE To ensure an orderly system shutdown ...

Страница 108: ...eed 266 MHz Num Lock On Diskette Drive B Dell Computer Corporation Page 1 of 2 Date Mon Jan 6 1997 System WS 266M Setup Diskette Drive A Secondary Drive 0 Auto CD ROM Device Drive 1 None Not Installed 3 5 inch 1 44 MB change values Esc exit This category sets the time in 24 hour format hours minutes seconds for the internal clock calendar BIOS Version XXX Dell Computer Corporation Page 2 of 2 This...

Страница 109: ...ighlight the appropriate drive category Drive 0 and Drive 1 and type u to display User1 Press Tab to highlight each of the parameter fields in suc cession and enter the appropriate number for each field NOTE For EIDE devices such as EIDE CD ROM drives and EIDE tape drives that are using the built in EIDE controller set the appropriate Drive category to Auto Reserved Memory Designates a region of s...

Страница 110: ...therwise there is a risk of dam aging the monitor NOTE Not all EIDE hard disk drives support this feature Enabling this feature for drives that do not support it may cause the EIDE drive to become inoperable until the system is restarted and the Power Management category is disabled Sound Enables On default or disables Off the audio controller NIC Enables On or disables Off the network interface c...

Страница 111: ...efault the USB connectors Speaker Enables built in speaker Microprocessor Displays type of microprocessor installed Level 2 Cache Displays size of level 2 cache memory in microprocessor System Memory Displays entire amount of installed memory detected in system except for memory on EMS expansion cards If EDO DIMMs are installed EDO is dis played next to this category Service Tag Displays system s ...

Страница 112: ...A 6 Dell WorkStation 400 Systems Service Manual ...

Страница 113: ...3 bracket hard disk drive 1 5 1 6 C cables DC power 1 5 1 12 diskette tape drive interface 1 5 card slot opening 1 5 1 6 CD ROM connector 1 14 CD ROM drive removal 4 11 5 13 computer chassis 1 5 1 6 cover removal 4 4 5 3 floor stand removal 4 3 orientation 1 3 technical specifications 1 19 configuration jumpers location 1 14 connectors location on back of computer 1 5 1 6 location on system board ...

Страница 114: ...4 removal 4 18 5 23 expansion slots 1 7 expansion subsystem 1 6 expansion card cage removal 4 17 5 22 external visual inspection 2 2 F fan connector 1 14 fatal error messages 3 4 floor stand removal 4 3 front bezel removal 5 4 front panel 1 4 front panel insert removal 4 6 5 6 5 7 H hard disk drive access indicator 1 4 hard disk drives about 1 7 bracket 1 5 1 6 bracket removal 4 12 5 15 connectors...

Страница 115: ...sion cards 1 7 1 14 PCI video card 1 8 Plug and Play expansion cards 1 6 POST beep codes 3 1 3 2 power button location 1 4 removal 4 5 5 5 power distribution diagram 1 13 power indicator 1 4 power input connectors 1 14 power supply about 1 10 cable configuration 1 12 DC voltage ranges 1 10 illustrated 1 12 removal 4 14 5 19 precautions 4 2 5 2 processor fan removal 4 15 5 20 R removing and replaci...

Страница 116: ...mpers 1 15 location inside chassis 1 5 removal 4 24 5 29 system board jumpers 1 15 system error messages list of 3 4 system features 1 2 system power supply 1 10 System Setup program A 1 system specifications 1 19 T tape drives interface cable 1 5 interface connector 1 14 removal 4 11 5 13 technical specifications 1 19 terminator card removal 4 22 5 27 thermal protection 1 9 tools recommended 4 1 ...

Страница 117: ......

Страница 118: ... www dell com Printed in the U S A P N 84926 ...

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