Dell 200, 6100 manual Removing the Front Bezel, Inside the Chassis, Remove the computer covers

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Removing the Front Bezel

Use the following procedure to remove the front bezel:

1.Remove the computer covers.

See the previous subsection, “Removing the Com- puter Covers.”

2.Release the two tabs on each side of the bezel (see Figure 7-3).

3.Slide the front bezel straight away from the chassis.

tabs (4)

Figure 7-3. Removing the Front Bezel

Inside the Chassis

In Figures 7-4 and 7-5, the computer cover is removed to provide interior views from the left and right sides. These illustrations also identify features on the front and back

of the computer. Refer to them to locate interior features and components discussed later in this guide.

When you look inside the computer, note the direct current (DC) power cables leading from the power-supply parallel- ing board. These cables supply power to the system board, small computer system interface (SCSI) backplane board, externally accessible drives, and certain expansion cards that connect to external peripherals.

The flat ribbon cables are the interface cables for internal drives. For SCSI devices, the interface cable connects externally accessible SCSI devices and the SCSI back- plane board to a SCSI host adapter either on the system board or on an expansion card.

The system board—the large, vertical printed circuit board at the left side of the chassis near the back—holds the computer’s control circuitry and other electronic compo- nents. Some hardware options are installed directly onto the system board. The system board provides 10 expan- sion-card connectors. The external drive bays provide space for up to four half-height drives, typically diskette drives, CD-ROM drives, or tape drives. The internal drive bays provide space for up to six half-height SCSI hard-disk drives. These drives are connected to the SCSI host adapter via the SCSI backplane board, which manages the drive bays and monitors the drive environment, including voltages and temperatures.

During an installation or troubleshooting procedure, you may be required to change a jumper or switch setting on the system board, the microprocessor module, an expansion card, or a drive. For more information on the jumpers and switches, see Appendix C, “Jumpers, Switches, and Connectors.”

WARNING: Before a trained service technician accesses the inside of the computer, any and all power supplies must be disconnected from their power source, and the cables to the power supplies must also be disconnected. If this computer has more than one power supply, disconnect both power supply cords before servicing to avoid electrical shock.

7-4 Dell PowerEdge 6100/200 System Installation and Troubleshooting Guide

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Contents 167$//$7,21$17528%/6+227,1**8 Page Safety Instructions When Working Inside the ComputerProtecting Against Electrostatic Discharge When Using the Computer System Preface About This GuideOther Documentation You May Need Notational ConventionsTypographical Conventions Examples autoexec.bat and c\windowsPage Contents Chapter Running the System Diagnostics Chapter Checking the Equipment Chapter Installing System Board Options Chapter Installing Drives in the External Bays Before You Call Figures Figure B-1 Column x 25-Line Character Set Subtest Screen Tables Page Dell Confidential Preliminary 12/17/96 Xxiv Checking the Basics Backing Up FilesBasic Checks Is the computer wet or damaged?Checking Connections and Switches Run the system diagnostics as described in Chap- terBack Panel Features Turn on the system Is the monitor operating properly? Yes. Continue to stepBoot Routine Indications Look and ListenIs the keyboard operating properly? Yes. Continue to step Is the mouse or printer operating properly?System Setup Program System Configuration UtilityMessages and Codes System MessagesSystem Messages CodeMessage System Messages System Beep Codes System Beep CodesDiagnostics Messages Scsi Hard-Disk Drive Indicator CodesScsi Hard-Disk Drive Indicator Patterns Alert Log Messages From the Dell HIP ProgramPage Finding Software Solutions Installing and Configuring SoftwareUsing Software Error MessagesInput Errors Default IRQ Line AssignmentsProgram Conflicts Avoiding Interrupt Assignment ConflictsRunning the System Diagnostics Features of the System DiagnosticsWhen to Use the System Diagnostics Starting the System Diagnostics Sample Diagnostics MenuHow to Use the System Diagnostics Sample System Diagnostics Main ScreenHow to Use the Menu Main Menu CategoriesRun SelectSubtest Run Under SubtestOptions Option ParametersTest Limits AboutKey-Help Tests in the System Diagnostics System Diagnostics TestsQuit System Diagnostics Tests Error Messages Why Run a RAM Test?RAM Test Group System Set Test GroupWhy Run a System Set Test? Why Run a Video Test? Video Test GroupWhy Run a Keyboard Test? Keyboard Test GroupMouse Test Why Run the Mouse Test? Why Run a Diskette Drives Test?Diskette Drives Test Group Serial/Infrared Ports Test GroupWhy Run a Serial/Infrared Ports Test? Parallel Ports Test GroupWhy Run a Parallel Ports Test? Scsi Devices Test GroupWhy Run a Scsi Devices Test? Page Troubleshooting the Monitor Run the system diagnostics softwareChecking the Equipment Troubleshooting the Keyboard Troubleshooting I/O PortsTroubleshooting the Basic I/O Functions Check the contents of the start-up filesChange the necessary statements in the start-up files Troubleshooting a Parallel Printer Troubleshooting a Serial I/O DeviceRun the parallel printer’s self-test Attempt another print operation on the parallel printerSafety First- For You and the Computer Checking Inside the ComputerRemoving and Replacing the Computer Covers Removing the Computer CoversReplacing the Computer Covers Removing the Computer CoversRemoving the Front Bezel Inside the ChassisRemove the computer covers Inside the Chassis-Front/Left Side View Troubleshooting a Wet Computer Responding to a Dell HIP Alert MessageTroubleshooting a Damaged Computer Let the computer dry for at least 24 hoursCheck all the board and card connections in the computer Verify all internal cable and component connectionsTroubleshooting the RTC Chip Troubleshooting Power Supply Problems Replacing a Power SupplyTroubleshooting a Cooling Fan Troubleshooting Power Cable ConnectionsPower Cable Connectors on Power-Supply Paralleling Board Check the cable connections listed in TableReinstall the fan carrier in the computer Replacing a Cooling FanReplace the left computer cover Troubleshooting Expansion Cards Reseat the expansion cards in their connectorsTroubleshooting System Memory Correct the system board’s configuration jumper settingsRun the RAM Test Group in the system diagnostics Turn on the system, including any attached peripheralsTroubleshooting the Video Subsystem Troubleshooting the System Board Determine whether a video expansion card is installedRemove the video expansion card, and repeat step Troubleshooting the Diskette Drive Subsystem Disconnect the keyboard and reboot the systemTroubleshooting the Diskette Drive Sub- system Checking the Diskette Drive SubsystemCheck the diskette drive cabling Repeat steps 1 and 2, and remove all expansion cardsTroubleshooting a Scsi Tape Drive Troubleshooting Scsi Hard-Disk Drives Drive Indicator Error CodesTroubleshooting the Scsi Hard-Disk Drive Remove the drive carrier and install it in another drive bayChecking Inside the Computer Page Installing System Board Options Installing System Board OptionsSystem Board Features Expansion CardsInstalling an Expansion Card Expansion CardsRelocating or Removing an Expansion Card Connect any cables that should be attached to the cardMemory Upgrade Kits Simm Installation GuidelinesAdding Memory Sample Simm Configurations Performing a Memory Upgrade Shows the location of the Simm sockets on the memory moduleInstalling SIMMs Removing SIMMs Valid Microprocessor Configurations Remove the left computer cover Remove the appropriate modules Remove the heat sinkRemove the microprocessor from the socket Install the microprocessor in the socket see Fig- ure Unpack the new microprocessorReplacing the RTC Chip Replace the microprocessor securing clipInstall the new RTC chip 13. RTC ChipPage Installing Drives in the External Bays Installing Drives in the External BaysBefore You Begin External Drive Bay HardwareConnecting the Drive Removing and Replacing Front-Panel InsertsInstalling Scsi Devices in the External Bays DC Power CablesScsi Configuration Information Installing a Scsi Device Prepare the drive for installationRemove the computer covers and front bezel Page Configure the controller card if necessary Prepare the tape drive and controller card for installation Remove both computer covers and the front bezelInstalling Drives in the Internal Bays Installing Drives in the Internal Bays 10-1Scsi Hard-Disk Drive Configuration Internal Drive HardwareRemoving and Installing a Scsi Hard-Disk Drive Install any required Scsi device driversScsi Hard-Disk Drive Indicator Patterns Remove the hard-disk driveInstalling Drives in the Internal Bays 10-5 Configuring the Boot Device Partitioning and Formatting Scsi Hard-Disk DrivesRun the diagnostics for your Dell system Getting HelpTechnical Assistance Help ToolsSystem Documentation World Wide Web on the InternetHelp Tools Commercial Online Services Dell Diagnostics ProgramAutoTech Service TechFax ServiceProblems With Your Order Technical Support ServiceProduct Information TechConnect BBSReturning Items for Warranty Repair or Credit Before You CallDell Contact Numbers 1344 International Dialing CodesGetting Help 11-7 Dell Contact Numbers AustraliaAustria BelgiumCanada ChinaCzech Republic Denmark FinlandFrance GermanyIreland ItalyJapan KoreaLuxembourg MacauMalaysia MexicoNew Zealand NorwayPoland SingaporeSweden SwitzerlandTaiwan Austin, Texas AutoTech Automated technical support Page Diagnostics Checklist Diagnostics Checklist Diagnostic Video Tests Text Mode Character TestVideo Memory Test Video Hardware TestCharacter Attributes Subtest 80 x Character Set Subtest 80 xCharacter Attributes Subtest 40 x Character Set Subtest 40 xText Mode Color Test Color Attributes Subtest 80 xTable B-1. Color Attributes Text Mode Pages Test Graphics Mode Test320 x 200 16-Color Graphics Mode Screen 640 x 200 16-Color Graphics Mode Screen640 x 350 16-Color Graphics Mode Screen 640 x 480 2-Color Graphics Mode ScreenColor Palettes Test Solid Colors Test Page Jumpers, Switches, and Connectors Jumpers and Switches General ExplanationSwitches JumpersFigure C-1. System Board Jumpers and Switches System BoardTable C-1. System-Board Jumper and Switch Settings Clear Cmos Clear Password Reserved Bios RecoveryVideo Sleep Table C-2. System Board Connectors and Sockets System Board LabelsMicroprocessor Module Figure C-2. Microprocessor Module JumpersTable C-3. Microprocessor Module Jumper Settings Table C-4. Scsi Backplane Board Connectors Scsi Backplane BoardPower-Supply Paralleling Board Figure C-4. Power-Supply Paralleling BoardDisabling a Forgotten Password Table C-5. Power-Supply Paralleling Board ConnectorsAbbreviations and Acronyms Der TelekommunikationDram LIF Verband Deutscher Elektro Index Page Index Page Index Page Switches settings table, C-3 Page Index
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