Dell 100-Mbps manual External Visual Inspection

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External Visual Inspection

The external visual inspection consists of a quick inspection of the exterior of the system unit, the monitor, the keyboard, any peripherals, and cables. While performing the visual inspection, make any necessary corrections. To perform the external visual inspection, follow these steps:

1.Turn off the system unit, the monitor, and all peripherals.

2.Verify that all power cables are properly connected to the system unit, the monitor and peripherals, and their power sources.

3.Verify that the keyboard and mouse interface cables are firmly attached to the proper connectors on the back of the system unit.

For a PS/2-compatible mouse, the keyboard and mouse interface cable con- nectors are identical except for their labels. If needed, see “System Features” in Chapter 1.

For a serial mouse, the mouse interface cable must be firmly 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 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 system unit as well as to the interface connector on the device. The captive screws that secure these connectors at each end of the interface cable must be secure enough to ensure a firm connection.

5.Verify that the video interface cable is firmly attached to the connector on the video expansion card and to the connector on the back of the monitor.

For proper connection of the video monitor, see the documentation for the monitor.

6.Inspect all external monitor controls for any obvious damage or improper settings.

For proper settings of the video monitor controls, see the documentation for the monitor.

7.Inspect the keyboard to ensure that no keys are sticking.

If one or more keys are sticking, it may be necessary to replace the keyboard.

2-2 Dell OptiPlex GXpro Systems Service Manual

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Contents 659,&0$18$ Page Contents Chapter Basic Troubleshooting Chapter Beep Codes and Error MessagesChapter Removing and Replacing Parts Index FiguresTables 16. Expansion-Card Cage RemovalPage Read This First System Overview System Features System Unit Orientation Front-Panel Features Dual-Processor Capability Advanced Expansion SubsystemAudio Controller Hard-Disk Drive OptionsEnhanced Dual-Interface Eide Subsystem PCI Video CardDesktop Chassis Thermal MonitoringSystem Unit System Power SupplyPin Assignments for the DC Power Connectors Smart SupportDC Power Connector P1 DC Power Distribution DC Power Connector P7Power Distribution System Board Layout Video MemoryMain Memory System Board JumpersInterrupt Assignments Jumper DescriptionsDMA Channel Assignments IRQ14Technical Specifications Technical SpecificationsNIC CtrlAltEnter To 149 F Page Basic Troubleshooting Initial User ContactExternal Visual Inspection Observing the Boot Routine Internal Visual Inspection Running the Diskette-Based Diagnostics Eliminating Resource ConflictsGetting Help Beep Codes and Error Messages Post Beep CodesPost Beep Codes System Error Messages HaltedSystem Error Messages System could not suc System Setup program Incorrect configuration During memory test Faulty or improperly System does not recog Faulty diskette, diskette MS-DOS unable to Defective sectors on dis At system start-up One or both micro Removing and Replacing Parts Recommended ToolsPrecautionary Measures Protection of the EquipmentFloor Stand Pull the floor stand away from the system unitSystem Unit Cover System-Unit Cover RemovalEject, Power, and Reset Buttons Eject, Power, and Reset Button RemovalFront-Panel Inserts Front-Panel Insert RemovalIndicator Card Indicator Card RemovalSpeaker Speaker RemovalDrives Drive HardwareDrives in the Drive Cage 5-Inch Diskette Drive Removal10 .25-Inch Drive Removal Hard-Disk Drives Lift the hard-disk drive bracket out of the system unit12. Hard-Disk Drive Removal System Power Supply 13. Power Supply RemovalMicroprocessor Fan 14. Microprocessor Fan RemovalSystem Board Components 15. System Board ComponentsExpansion Cards Expansion-Card CageExpansion Card 17. Expansion-Card RemovalRiser Board 18. Riser Board RemovalDIMMs 19. Dimm RemovalMicroprocessor/Heat Sink Assembly 21. Microprocessor Securing Clip22. Microprocessor Removal Terminator or Add-In Card Terminator CardAdd-In Card 24. Add-In Card RemovalSystem Battery Remove the batterySystem Board Remove the system board as followsSystem Setup Program System Setup Screens USBTable A-1. System Setup Categories Be shadowed or cached. If video problems Check the monitor documentation to make Table A-1. System Setup Categories Index Dskt connector, 1-12,4-16dual-processing,1-5 ECC DIMMs LINE-IN connector, 1-12,4-16 USB description Location, 1-4,1-12