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Chassis Intrusion Switch

Dell Precision™ WorkStation 340 Service Manual

Removing the Chassis Intrusion Switch

Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 10 to 20 seconds, lay the mini-tower computer on its side,

and

open the computer cover

Small Desktop Computer

Small Mini-Tower Computer

Disconnect the chassis intrusion switch cable connector from the control panel on the front of the computer.

Note the routing of the chassis intrusion cable as you remove it from the computer. Hooks may hold the cable in place inside the computer.

Slide the chassis intrusion switch out of its slot and remove the switch and its attached cable from the 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. To locate this light, see "

System Board Components

Содержание Precision Workstation 340

Страница 1: ...s 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 Cor...

Страница 2: ...m their electrical outlets and wait 10 to 20 seconds 3 Open the computer cover 4 Remove the battery To locate the battery on the system board see your computer s illustration in System Board Components Removing the Battery Press in on the tab to release the battery 5 Install the new battery Orient the battery with the side labeled facing up Then insert the battery into the socket and snap it into ...

Страница 3: ...puter and disconnect it from its electrical outlet Leave the computer off for at least 10 minutes 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 1 battery 2 battery socket NOTE If enabled the Chassis Intrusion option will cause...

Страница 4: ...ctor from the control panel on the front of the computer Note the routing of the chassis intrusion cable as you remove it from the computer Hooks may hold the cable in place inside the computer 3 Slide the chassis intrusion switch out of its slot and remove the switch and its attached cable from the computer CAUTION Before you perform this procedure see Safety First For You and Your Computer NOTIC...

Страница 5: ...system setup see the User s Guide 2 Under the System Security tab reset the Chassis Intrusion option by pressing the left or right arrow key to select Reset Change the setting to Enabled Enabled Silent or Disabled 3 Press Alt B to restart the computer and implement your changes Back to Contents Page NOTE The default is Enabled Silent NOTE If a setup password has been assigned by someone else conta...

Страница 6: ...ore 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 To locate this light see your computer s illustration in System Board Components NOTE On the small desktop computer remove the stand before you open the...

Страница 7: ... the computer cover 2 Ensure that no tools or extra parts including screws are left inside the computer 3 Close the computer cover by pivoting the cover down toward the back of the computer and into position Make sure that the release buttons click into place Small Desktop Computer Mini Tower Computer 4 If you are using a padlock to secure your computer install the padlock ...

Страница 8: ...Back to Contents Page ...

Страница 9: ...r remove any installed CD drives and release all the tabs on each panel 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 NOTICE Before you disconnect a device from...

Страница 10: ... the Control Panel Desktop Computer Follow the steps in the Removing the Control Panel procedure in the reverse order ensuring that all tabs are secure Mini Tower Computer Follow the steps in the Removing the Control Panel procedure in the reverse order ensuring that all tabs are secure Back to Contents Page 1 computer cover tab remove the CD drive to access this tab 2 top panel tabs 3 top panel 4...

Страница 11: ...rive bay to disengage the bracket 5 Slide the bracket upward and remove it from the inside of the computer Floppy Drive Removal 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 CAUTION To avoid the possibility of electric shock turn off the compute...

Страница 12: ...oles on the drive with the screw holes on the rails and tightening all four screws 8 Reinstall the 3 5 inch floppy drive and bracket assembly by gently sliding the bracket into place until the tabs securely click into position Floppy Drive Installation 9 Connect the power cable and floppy drive cable to the connectors on the drive 10 Close the computer cover reconnect your computer and devices to ...

Страница 13: ...wo tabs on the sides of the drive bay to disengage the bracket 5 Slide the drive upward and remove it from the computer Floppy Drive Removal 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 7 Attach the bracket to the new drive by aligning the screw holes on the drive with the screw...

Страница 14: ... Removing and Installing a 5 25 Inch Removable Media Drive Small Desktop 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 2 Open the computer cover 3 Remove the removable media drive data cable from the drive 4 Remove the power ...

Страница 15: ...two screws that secure each rail to the drive 8 Attach the rails to the new drive by aligning the screw holes on the drive with the screw holes on the rails and tightening all four screws 9 If you are installing a new drive connect it to the set of rails that are attached to the inside of the cover Removable Media Drive Installation 1 audio cable 5 power cable connector 2 removable media drive dat...

Страница 16: ...e data cable to the system board or a controller card depending on the type of drive l For a CD drive connect the other end of the removable media drive data cable to the removable media data connector labeled IDE SEC on the system board l For a drive that comes with its own controller card connect the other end of the IDE drive data cable to the controller card 15 Check all cable connections and ...

Страница 17: ... 2 Open the computer cover 3 Remove the removable media drive data cable from the removable media drive 4 Remove the removable media drive power cable and audio cable from the removable media drive 5 Press inward on the two tabs on the sides of the drive bay to disengage the drive from the computer Removable Media Drive Removal 6 Slide the drive upward and remove it from the computer 7 If the repl...

Страница 18: ...oblems 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 1 removable media drive data cable 4 power cable connector 2 audio cable 5 data cable connector 3 removable media drive connector IDE SEC 6...

Страница 19: ... drive bracket disconnect the power and hard drive data cables from the drive b Press in on the tabs on each side of the bracket and slide it up and out 7 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 Bracket Rail Removal and Replacement 1 hard drive data cable 2 power cable ...

Страница 20: ... Connect a power cable to the power cable connector on the drive and connect the hard drive data cable to the hard drive Check all connectors to be certain that they are properly cabled and firmly seated Hard Drive Cable Attachment NOTICE To avoid possible damage to the computer you must match the colored stripe on the hard drive data cable with pin 1 on the drive s data cable connector and with t...

Страница 21: ...ormation 21 If the drive you just installed is the primary drive install the operating system on the hard drive For instructions refer to the documentation that came with the operating system Removing and Installing a Hard Drive Mini Tower Computer 1 If you are replacing a hard drive that contains data you want to keep be sure to make a backup of your files before you begin this procedure If you a...

Страница 22: ...by gently sliding the bracket into place until you hear it securely click Hard Drive Replacement 9 Connect a power cable to the power cable connector on the back of the drive and connect the hard drive data cable to the hard drive data cable connector on the drive Hard Drive Cable Attachment 1 hard drive data cable 2 power cable 3 hard drive connector IDE PRI NOTICE To avoid possibly damaging the ...

Страница 23: ...stem on the hard drive For instructions refer to the documentation that came with the operating system Adding a Second Hard Drive 1 Unpack the drive and prepare it for installation Check the documentation for the drive to verify that it is configured for your computer 2 Open the computer cover 3 Remove the two green plastic rails inside the hard drive bay These rails are not attached to the inside...

Страница 24: ...fer to the drive documentation in your upgrade kit for information on configuring devices for the cable select setting When you connect two IDE devices to a single IDE interface cable and configure them for the cable select setting the device attached to the last connector on the interface cable is the master or boot device drive 0 and the device attached to the middle connector on the interface c...

Страница 25: ...ge of the cable goes to the pin 1 end of the connector The pin 1 end of a connector on a board or a card is usually indicated by a silk screened 1 printed directly on the board or card IDE Device Installation Guidelines General Guidelines With the two IDE drive cable connectors on the system board your computer can support up to four IDE drives l Cable the primary IDE system board connector to IDE...

Страница 26: ...ssary l To use an external SCSI device you must have a SCSI controller card installed in your computer Connect one end of the external SCSI cable to the connector on the back of the SCSI device Attach the other end of the external SCSI cable to the connector on the controller card installed in the computer l After installing a SCSI hard drive Primary Drive 0 and Primary Drive 1 should be set to No...

Страница 27: ...Back to Contents Page NOTICE Dell recommends that you use only SCSI cables purchased from Dell Cables purchased elsewhere are not guaranteed to work with Dell computers ...

Страница 28: ... surface to remove any static charge your body may have accumulated You can also take the following steps to prevent damage from electrostatic discharge ESD l When unpacking a static sensitive component from its shipping carton do not remove the component from the antistatic packing material until you are ready to install the component in your computer Just before unwrapping the antistatic packagi...

Страница 29: ... four 32 bit 33 MHz PCI cards l 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 Expansion Card Types Small Desktop Computer NOTE To meet PC99 Workstation requirements your Dell computer does not support ISA expansion cards This is an industry standard for ease of use 1 32 bit PCI card 2 AGP 4x card NOTE The AGP expansion s...

Страница 30: ...arm Expansion Card Retention Arm Small Desktop Computer NOTE See Expansion Card Cage Small Desktop Computer Only for information on removing the card cage 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 compo...

Страница 31: ...nd press down firmly Make sure the card is fully seated in the slot Expansion Card Connection 9 As you lower the retention arm make sure that all expansion cards and filler brackets are flush with the alignment bar Press the arm into place securing the expansion card s in the computer Expansion Card Installation Small Desktop Computer CAUTION Some network adapters automatically start the computer ...

Страница 32: ...tion for the card for information about the card s cable connections 12 Close the computer cover 13 Reconnect the computer and devices to their electrical outlets and turn them on 1 card retention arm 2 card connector 3 expansion card NOTICE Do not route expansion card cables over or behind the expansion cards Cables routed over the expansion cards can prevent the computer cover from closing prope...

Страница 33: ...tem setup and disable the expansion card If you removed a sound card perform the following steps a Enter system setup select Integrated Devices and change the setting for Sound to On b Connect external audio devices to the audio connectors on the computer back panel see Inside Your Computer If you removed an add in network adapter perform the following steps a Enter system setup select Integrated ...

Страница 34: ...p AGP Slot Filler Bracket Removal Small Desktop Computer 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 1 tab 2 indentation ...

Страница 35: ... the AGP card 6 Secure the AGP card bracket by lowering the securing lever on the back panel 7 Close the computer cover Removing an AGP Card 1 Raise the hinged lever on the back on the computer 2 On the AGP card clip press the lever toward PCI slot 1 3 Pull the AGP card up and out of the AGP card clip Back to Contents Page ...

Страница 36: ...om the computer Expansion Card Cage Removal 3 Gently pull on the handle and lift the expansion card cage away from the computer Replacing the Expansion Card Cage 1 Align the slots in the side of the expansion card cage with the tabs on the side of the computer and slide the expansion card cage down into place Expansion Card Cage Replacement 2 Make sure that the riser board is fully seated in the c...

Страница 37: ...t door with the two hinge arms 4 Press inward on the front door until it clips to both hinge arms Front Panel Door Reattaching the Hinge Arms 1 Shut down the computer 2 Remove the front door if attached The front door snaps off of the two hinge arms 3 Lift both hinge arms to the horizontal position Then pull the arms toward you until they snap into place If the hinge arms don t snap back into plac...

Страница 38: ...e 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 Back to Contents Page 1 hinge arms 2 in horizontal position ...

Страница 39: ... the small desktop computer a Face the front of the computer and use your fingers to remove the front panel cover b Press on the insert until it pops free of the front panel cover 3 On the mini tower computer a Open the cover to a 90 degree angle and release the insert tabs from inside the computer b Press on the insert until it pops free of the front panel cover Small Desktop Computer Mini Tower ...

Страница 40: ...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 ...

Страница 41: ...e access points are color coded green 1 removable media drive 9 AC power connector 2 hard drive 10 padlock ring 3 cover release buttons 2 11 back panel connectors 4 speaker 12 microprocessor blower assembly 5 chassis intrusion switch 13 memory modules 6 power supply 14 system board 7 expansion card cage 15 floppy drive 8 PCI expansion card slots 2 ...

Страница 42: ... 8 PCI expansion card slots 4 2 floppy drive 9 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 ...

Страница 43: ...moval 6 Remove all cables that are connected to the front I O panel 7 Remove the mounting screw that secures the front I O panel to the computer 8 Remove the front I O panel from the computer Removing the I O Panel Mini Tower Computer Front I O Panel Removal CAUTION Before you perform this procedure see Safety First For You and Your Computer NOTICE Before disconnecting a device from the computer o...

Страница 44: ...er so that you can replace it correctly 3 Remove all cables that are connected to the front I O panel 4 From inside the computer cover remove the mounting screw that secures the front I O panel to the computer 5 Rotate the front I O panel towards the hard drive and remove the front I O panel from the computer Replacing the I O Panel To replace the front I O panel follow the removal procedure for y...

Страница 45: ...ocate the memory sockets on the system board see System Board Memory Components Memory Module Label System Board Memory Components Computer Memory Installation Guidelines l Before you install new memory modules download the most recent BIOS for your computer from the Dell Support website at support dell com l Each memory socket on the system board must be occupied either by a RIMM or a CRIMM Memor...

Страница 46: ...airs either in connectors RIMM1 and RIMM2 or RIMM3 and RIMM4 Do not pair one original memory module with one new memory module Otherwise your computer may not start properly CAUTION RIMMs can get very hot during normal operation Be sure that the RIMMs have had sufficient time to cool before you touch them CAUTION Before you perform this procedure see Safety First For You and Your Computer NOTICE B...

Страница 47: ...system setup and check the value for System Memory The computer should have already changed the value of System Memory to reflect the newly installed memory If the new total is correct skip to step 9 8 If the memory total is incorrect repeat step 1 through step 3 Check the installed modules to ensure that they are seated properly in their sockets Then repeat step 7 through step 9 9 When the System...

Страница 48: ...s to release the securing clips from the retention base Then lift the clips out of the tabs on the retention base and away from the heat sink Heat Sink Blower Assembly Removal Small Desktop Computer 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 tim...

Страница 49: ...crews 2 3 retention base 6 blower 1 securing clips 2 4 ZIF socket 2 latches 2 5 retention base 3 tabs 3 6 heat sink NOTICE Gently rock the heat sink and then lift it to remove 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 b...

Страница 50: ...to that position 2 Align pin 1 the beveled corner of the microprocessor package and pin 1 of the socket Microprocessor Installation 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 1 ZIF socket lever 3 microprocessor 2 ZIF socket NOTICE You must position the microprocessor...

Страница 51: ... detects the presence of the new microprocessor and automatically changes the computer configuration information in system setup 1 Enter system setup and confirm that the system data area correctly identifies the type of installed microprocessor For instructions on using system setup see your User s Guide 2 While in system setup reset the Chassis Intrusion option by pressing the left or right arro...

Страница 52: ...p Computer Mini Tower Computer 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 To locate this light see S...

Страница 53: ...he cables as leverage and pull away from the clips while simultaneously pulling on the metal clips with your fingers 5 On the mini tower computer remove the two screws that secure the power supply 6 Press the push button 7 Slide the power supply toward the front of the computer approximately 1 inch 8 Lift the power supply up and out of the computer Replacing the Power Supply 1 Slide the power supp...

Страница 54: ... off To locate this light see System Board Components Also disconnect any telephone or telecommunication lines from the computer Doing so reduces the potential for personal injury or shock In addition take note of these safety guidelines when appropriate l When you disconnect a cable pull on its connector or on its strain relief loop not on the cable itself Some cables have a connector with lockin...

Страница 55: ...2 battery 13 front panel audio connector 3 removable media drive connector IDE SEC 14 telephony connector 4 hard drive connector IDE PRI 15 CD audio connector 5 front panel connector 16 back panel connectors 6 system board speaker 17 microprocessor power connector 7 password jumper 18 microprocessor heat sink assembly 8 auxiliary hard drive activity light connector 19 memory module sockets RIMM 1 ...

Страница 56: ... AGP card connector 22 memory module sockets RIMM 3 and 4 11 standby power light 23 main power connector 12 PCI expansion card connectors 4 Connector or Component Label AGP AGP card connector AUDIO Audio connectors BATTERY Battery socket CD CD audio connector CLR CM Clear CMOS jumper CPU Microprocessor heat sink assembly DIAG LED Diagnostic lights FAN1 Microprocessor fan connector FLOPPY Floppy dr...

Страница 57: ... 1 USB 2 connectors NOTICE Before changing a jumper setting verify that the standby power light on the system board has turned off Otherwise damage to your computer or unpredictable results may occur To locate this light see System Board Components Jumper Setting Description PSWD default Password features are enabled Password features are disabled CLR CM pins 1 and 2 Normal setting pins 1 and 2 ar...

Страница 58: ...stem board 2 Remove the memory modules and install them on the replacement board 3 Remove the cooling fan heat sink assembly and microprocessor from the existing system board and transfer them to the replacement system board 4 Configure the settings of the replacement system board 5 Set the jumpers on the replacement system board they are identical to the one on the existing board CAUTION Before y...

Страница 59: ...them on 10 Set the jumpers on the new system board so that they are identical to those on the original board 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 t...

Страница 60: ...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 Back to Contents Page NOTE A NOTE indicates important information that helps you make better use of your...

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