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Dell 100-Mbps Network Card User Manual

1. Sai eles BS ew Maximum shock Operating Storage Altitude Operating Storage 0 25 G at 3 to 200 Hz for 30 min 0 5 G at 3 to 200 Hz for 30 min half sine wave form 50 G for 2 ms half sine wave form 110 G for 2 ms square wave form 27 g for 15 ms 16 to 3048 m 50 to 10 000 ft 16 to 10 600 m 50 to 35 000 ft Sysiem Overview 1 19 1 20 Dell OptiPlex GXpro Systems Service Manual This chapter describes basic troubleshooting procedures that can help you diagnose a computer system problem These procedures can often reveal the source of a problem or indicate the correct starting point for troubleshooting the system A brief explanation of how to load and start the diskette based diagnos tics is located at the end of the chapter Dell recommends that you perform the following procedures in the order they are presented in this manual Initial User Contact When you first contact a user who has a problem ask the user to describe the problem and the conditions under which it occurs verbal description can often indicate the cause of a problem or indicate the appropriate 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 Appendix D Maintaining the System in the User s Guide provides infor mation
2. Microprocessor Microprocessor type Intel Pentium Pro microprocessor Microprocessor speed 200 or 180 MHz First level cache 16 KB Second level cache 256 KB for 180 or 200 MHz 512 KB for 200 MHz Math coprocessor internal to the microprocessor System Information System chip set Intel Natoma 82440FX set Data bus width 64 bits Address bus width 32 bits Flash EPROM 2 Mbits Expansion Bus Bus types curra PCI and ISA Bus speeds asisas gua pinsh PCI 30 MHz 180 60 processor 33 MHz 200 66 processor ISA 7 5 MHz 180 60 processor 8 25 MHz 200 66 processor PCI expansion card connectoTrs 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 with two of the PCI connectors ISA expansion card Connector Size 98 pins ISA expansion card connector data width maximum 16 bits PCI expansion card connector Size 120 pins PCI expansion card connector data width maximum 32 bits 1 16 Dell OptiPlex GXpro Systems Service Manual Table 1 5 Technical Specifications continued System Clocks System clock 60 or 66 MHz matches external processor speed Diskette communications POTS pes rake de ed 24 M
3. Reset failed Disk reset operation failed Improperly connected diskette tape drive hard disk drive interface cable or power cable Dell OptiPlex GXpro Systems Service Manual Table 3 2 System Error Messages continuea Message Definition Probable Causes Sector not found Seek error MS DOS unable to locate sector on diskette or hard disk drive MS DOS unable to locate specific track on diskette or hard disk drive Defective sectors on dis kette or hard disk drive Defective diskette or hard disk drive Seek opera tion failed System could not find particular address mark on disk Faulty diskette or hard disk drive Shutdown fail ure System board chip faulty Defective system board Terminator processor card not installed System HALTED System does not have terminator or add in card Terminator or add in card improperly installed or no card installed Time of day clock stopped Backup 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 backup bat tery bad Incorrect Time or Date settings or defective backup battery Timer chip counter 2 failed Timer circuit on system board malfunctioning Defective system board Unexpected interrupt in protected mode Keyboard mouse con troller ma
4. Faulty keyboard control ler defective system board General fail ure Operating system can not execute command Operating system cor rupted or not installed properly Hard disk controller failure Hard disk drive read failure Hard disk failure Hard disk drive failed to initialize Incorrect configuration settings in System Setup program improperly con nected hard disk drive cable faulty hard disk controller subsystem defective system board or loose power cable Incompatible Processor CPUO is BO step or below Incompatible Processor CPU1 is BO step or below Unsupported version of microprocessor installed on system board Unsupported micro processor installed Incompatible Processors Cache sizes different In a dual processor system both micro processors do not have the same level 2 cache Microprocessors do not have the same level 2 cache Beep Codes and Error Messages 3 5 3 6 Table 3 2 System Error Messages continued Message Definition Probable Causes 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 Keyboard fail ure Keyboard data line failure Keyboard stuck key failure System cannot commu
5. Figure 4 17 Figure 4 18 Figure 4 19 Figure 4 20 Figure 4 21 Figure 4 22 Figure 4 23 Figure 4 24 Figure 4 25 Figure 4 26 Figure A 1 Tables Table 1 1 Table 1 2 Table 1 3 Table 1 4 Table 1 5 Table 3 1 Table 3 2 Table A 1 Expansion Card Cage Removal 4 17 Expansion Card Removal 4 18 Riser Board Removal 4 19 DIMM Removal 4 20 DIMM Installation 4 20 Microprocessor Securing Clip 4 21 Microprocessor Removal 4 22 Terminator Card Removal 4 23 Add In Card Removal 4 24 System Battery Removal 4 25 System Board Removal 4 26 System Sep SCREENS tE A 2 DC Voltage Ranges 1 8 Jumper Descriptions 1 14 Interrupt Assignments 1 14 DREQ Line Assignments 1 15 Technical Specifications 1 16 POST Beep Codes ud daria 3 1 System Error Messages 3 4 System Setup Categories A 3 Read This First A prerequisite for using this manual to service Dell computer systems is a basic knowledge of IBM compatible PCs and prior t
6. nicate with keyboard Keyboard cable connec tor loose or improperly connected defective keyboard or defective keyboard mouse control ler defective system board Keyboard con troller failure Keyboard mouse con troller failed Defective keyboard mouse controller defec tive system board Dell OptiPlex GXpro Systems Service Manual Table 3 2 System Error Messages continued Message Definition Probable Causes Memory address line failure at address read value expect ing value Memory data line failure at address read value expecting value Memory double word logic failure at address read value expect ing value Memory odd even logic failure at address read value expect ing value Memory write read failure at address read value expecting 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 pressing lt Spacebar gt Network card is not present in the system System does not detect NIC Incorrect NIC drivers installed Beep Codes and Error Messages 3 7 Table 3 2 System Error
7. 3 1 power button location 1 4 removal 4 5 power distribution diagram 1 11 power indicator 1 4 power input connectors 1 12 4 16 power supply 1 8 cable configuration 1 10 DC voltage ranges 1 8 illustrated 1 10 removal 4 14 precautions 4 2 R reset button location 1 4 removal 4 5 resource conflicts eliminating 2 5 riser board connector 1 12 power connector 1 12 removal 4 19 S secondary microprocessor 4 23 serial port connectors location 1 4 SMART support 1 8 sockets battery 1 12 4 25 DIMM 1 12 4 16 4 20 speaker removal 4 8 specifications technical 1 16 SPKR OUT connector 1 12 4 16 Index 3 subsystems advanced expansion 1 5 enhanced dual interface EIDE 1 6 main memory 1 13 video memory 1 12 switch voltage selection 1 4 system board components removal 4 16 illustrated 1 12 jumpers 1 13 location inside chassis 1 4 removing and replacing 4 26 system board jumpers 1 13 system error messages list of 3 3 system features 1 2 system power supply 1 8 System Setup program A 1 system specifications 1 16 system unit cover 4 4 floor stand removal 4 3 orientation 1 3 T tape drives interface cable 1 4 interface connector 1 12 4 16 removal 4 10 4 11 technical specifications 1 16 terminator card removal 4 23 thermal monitoring 1 7 Dell OptiPlex GXpro Systems Service Manual troubleshooting boot routine interpreting
8. POWER1 riser board AN T ad microprocessor socket connector RISER MICROPROCESSOR riser board power 3 3 V power connector input connectors RSR PWR2 POWER Eeee j CD ROM connector CD_IN o diskette tape drive interface connector DSKT secondary microprocessor card or terminator card connector AND CPU front of system unit primary EIDE jumpers control panel secondary EIDE interface interface connector IDE1 connector PANEL connector IDE2 Figure 1 10 System Board Components Video Memory See the documentation from the video card manufacturer that came with your system for information on removing and replacing video memory upgrade chips 1 12 Dell OptiPlex GXpro Systems Service Manual Main Memory The four DIMM sockets on the system board can accommodate combinations of 16 32 64 and 128 MB DIMMs up to a total memory capacity of 512 MB The system is shipped with high speed 60 ns EDO DIMMs that provide ECC functionality when used with the Intel 82440FX PCIset EDO parity mode DIMMs can be mixed as follows e Any socket can be populated or not There is no requirement that one socket be filled before the other and empty sockets can be left between installed DIMMs Dell recommends populating the sockets in order from A to D e Each DIMM socket does not have to contain DIMMs of the same size or speed DIMMs may be installed in any order See DIMMs in Chapter 4 for information
9. power supply optional drive optional drive 3 5 inch diskette drive internal hard disk drive internal hard disk drive keyboard controller 3 VDC power management logic RTC NVRAM POWER1 RISER system board battery 5 HEN riser board PCI1 through PCI5 ISA1 ISA2 5 VDC 5 VDC 5 VDC 12 VDC 12 VDC 12 VDC 12 VDC 12 VDC P2 P5 P6 POWER2 main memory sockets MICROPROCESSOR 12 VDC FAN PANEL USB KYBD processor core regulator 2 1 3 5 VDC 3 3 VDC 2ND_CPU 2 1 3 5 VDC 3 3 VDC Figure 1 9 Power Distribution MOUSE Sysiem Overview 1 11 System Board Layout The subsections that follow provide service related information about the sys tem board components microphone jack NIC IN NIC USB serial port2 Keyboard mouse serial port 1 parallel connector Connector connector connectors port connectors stacked speaker out jack ENET USB SERIAL2 stacked PARALLEL SERIAL SPKR OUT KYBD MOUSE microprocessor fan a connector FAN line in jack LINE IN battery socket Bl sel BATTERY Os riser board power lA AF DIMM sockets 4 connector RSR PWR1 E Fl E Hi main power input Y connector
10. 2 3 external visual inspection 2 2 initial procedures 2 1 initial user contact 2 1 internal visual inspection 2 4 U USB description 1 7 location 1 4 1 12 user contact initial 2 1 V video connector location 1 4 video subsystem 1 6 visual inspection external 2 2 internal 2 4 voltage selection switch 1 4
11. Setup program and make a printed copy of the System Setup screens 2 Rotate the power supply out of the way See System Power Supply found earlier in this chapter 3 Remove the battery Pry the battery out of its socket with your fingers or with a blunt non conducting object such as a plastic screwdriver To replace the system battery follow these steps 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 type recommended by the manufacturer Discard used batteries accord ing to the manufacturer s instructions 1 Orient the new battery with the facing up Insert the battery into its socket and snap it into place Rotate the power supply back into position 2 Start the System Setup program and reset the Date and Time categories Also compare the system configuration information with the copy of the system configuration settings you made in step 1 of the removal procedure Restore any system configuration information that was lost while replacing the battery Removing and Replacing Parts 4 25 System Board Figure 4 26 System Board Removal To remove the system board follow these steps 1 Disconnect all cables from their connectors at the back of the system unit 2 Remove the expansion card cage 3 Remove the microprocessor fan 4 Disconnect all cables from the system board Remove the
12. about backing up data 2 Ask the user to try to duplicate the problem by repeating the operations he or she was performing at the time the problem occurred Can the user duplicate the problem Yes Proceed to step 3 No Proceed to the next section External Visual Inspection 3 Observe the user to determine if he or she is making an error such as typing an incorrect key combination or entering a command incorrectly Is the problem a result of user error Yes Instruct the user in the proper procedure or direct him or her to the appropriate user documentation for the correct procedure No Proceed to the next section External Visual Inspection Basic Troubleshooting 2 1 2 2 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
13. components microphone jack NIC USB keyboard mouse serial port 1 parallel NIC IN connector tors 2 comeciars port connectors stackea ENET Connectors 2 stackea PARALLEL SERIAL speaker out jack USB KYBD MOUSE SPKR OUT microprocessor fan connector FAN rene L NEIN battery socket gt d BATTERY o A riser board at J DIMM sockets 4 power EE connector E main power input RSR PWR1 connector POWER1 riser board fA connector microprocessor socket RISER MICROPROCESSOR da ae g 3 3 V power onnodior input connectors RSR PWR2 POWER2 SN aaa ai MAA CD ROM secondary Nn microprocessor card or terminator card connector 2ND_CPU front of system unit primary EIDE interface connector IDE 1 4 16 Dell OptiPlex GXpro Systems Service Manual connector CD IN diskette tape drive interface connector DSKT control panel secondary EIDE interface connector PANEL connector IDE2 Figure 4 15 System Board Components Expansion Cards The system unit has a removable expansion card cage The expansion cards fit into connectors on a riser board Dell recommends that you remove the expansion card cage first before removing or installing expansion cards Expansion Card Cage lever expansion card cage notch chassis Figure 4 16 Expansion Card Cage Removal To remove an expansion card cage follow these steps 1 Disconnect any cables from the ex
14. eee a 1 6 PCI Video Card cesa orni KABI a 1 6 NASA A 1 7 UB e da ore et 1 7 Desktop Chassis saks irradia at HEG at ENG 1 7 Thermal Monitoringas dessa Die ata Se Teke sek 1 7 System taa dad 1 8 System Power SUPIERA as 1 8 Pin Assignments for the DC Power Connectors 1 8 DC Power Distribution 1 10 System B lla NS 1 12 Video Memory ss cach casccheeunedwibiadvobubva daa H ker 1 12 Main Menor e ie ee eae aha eran 1 13 System Board Jumpers 1 13 Interrupt Assignments 1 14 DMA Channel Assignments 1 15 Technical Specilicatlons ses ot dou eae e 1 16 vi Chapter 2 Basic Troubleshooting 2 1 Initial User Contact ios erre aar 2 1 External Visual Inspection 2 2 Observing the Boot Routine 2 3 Internal Visual Inspection 2 4 Eliminating Resource Conflicts 2 5 Running the Diskette Based Diagnostics 2 5 Getting Hep 250 KIWA NE 2 6 Chapter 3 Beep Codes and Error Messages 3 1 POST Beep Codes cui ri ae REA ee ss Ske a 3 1 sy stenkError Messages mp wade he eee 3 3 Chapter 4 Removing and Replacing Parts 4 1 Recommended 100181 eu a vee ees nd eee
15. oa 4 1 Precautionary Measures 4 2 Floor Stald vecinos AI brad dieta e bi ieee 4 3 System Unit KOG rara did 4 4 Eject Power and Reset Buttons 4 5 Front Panel Inserts vii A A eie 4 6 Indicator Card ess e e EE a AS ee RT 4 7 SPCaker re eee ae 4 8 Pesten das Get bade fers a he Ee a 4 9 Drives inthe Drive Cas AA eke eee 4 10 Had Disk Drives pere Lhe deem due teed epee 4 12 System Power Supply 4 14 Microprocessor Fan 4 15 System Board Components 4 16 Expansion Cards yt ASAS 4 17 Expansion Card Cage 4 17 Expansion Card A AAA 4 18 Li A EG 4 19 DIMMS pr SANE Og OE ae 4 20 Microprocessor Heat Sink Assembly 4 21 Terminator or Add In Card 4 23 Terminator Cardin ii cto 4 23 Add Card ad e SS TE 4 24 System Battery cairo a tai 4 25 System Board A eds en 4 26 Appendix A System Setup PrograM ooooooooooooooo A 1 System Setup CTS ri AS SD reese A 2 Index Figures Figure 1 1 Figure 1 2 Figure 1 3 Figure 1 4 Figure 1 5 Figure 1 6 Figure 1 7 Figure 1 8 Figure 1 9 Figure 1 10 Figure 1 11 Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 4 7 Figure 4 8 Figure 4 9 Figure 4 10 Figure
16. 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 Dell OptiPlex GXpro Systems Service Manual S Inspect the exterior of the system unit including all controls and indica tors and all user accessible data storage devices for any signs of physical damage Does the in
17. 2 also provides support for up to two high performance EIDE devices typically EIDE tape drives or CD ROM drives NOTE The externally accessible drive bays at the front of the system unit are normally used for diskette drives CD ROM drives and or tape drives Hard disk drives should be installed in the internal hard disk drive bracket described in the previous subsection Hard Disk 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 Creative Labs VIBRA 16 audio controller chip and connectors on the back panel for connecting the system unit to external audio devices speakers microphone The controller supports all the sound functions found on the Sound Blaster expansion card from Creative Laborato ries Inc Chapter 6 Using the Integrated Audio Controller in the User s Guide pro vides instructions for connecting the system to external audio devices and configuring the integrated audio controller to avoid resource conflicts PCI Video Card The video subsystem consists of a high speed high resolution video adapter card installed in one of the bottom two PCI expansion card connectors PCI or PCI Because the video adapter card connects to the PCI local bus rather than to the ISA compatible system bus communication between the video subsystem and the microprocessor is much faster The
18. 4 11 Figure 4 12 Figure 4 13 Figure 4 14 Figure 4 15 System Unit Orientation 1 3 Front Panel Features 1 4 Internal Vi Wei eee PG sd ta a sls 1 4 Riser Board Expansion Card Connectors 1 5 DC Power Connector Pl 1 9 DC Power Connectors P2 P3 P4 P5 and P6 1 9 DC Power Connectors P7 1 10 DC Power Cables siria pa a Tb ed weeds 1 10 Power Distribution 1 11 System Board Components 1 12 System Board Jumpers 1 13 Floor Stand Removal 4 3 System Unit Cover Removal 4 4 PadlockRemovala oa wa 4 4 Eject Power and Reset Button Removal 4 5 Front Panel Insert Removal 4 6 Indicator Card Removal 4 7 Speaker Removal dl a a ae Oa 4 8 D ve HF Ware tan ai ES e Sided 4 9 3 5 Inch Diskette Drive Removal 4 10 5 25 Inch Drive Removal 4 11 Hard Disk Drive Bracket Removal 4 12 Hard Disk Drive Removal 4 13 Power Supply Removal 4 14 Microprocessor Fan Removal 4 15 System Board Components 4 16 vii vili Figure 4 16
19. Dell OptiPlex GXpro Systems USB Enhanced and Integrated 10 100 Mbps Ethernet Information in this document is subject to change without notice O 1996 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 OptiPlex are registered trademarks of Dell Computer Corporation Intel and Pentium are registered trademarks of Intel Corporation Microsoft MS DOS Windows and Windows NT are registered trademarks of Microsoft Corporation Novell and NetWare are registered trademarks of Novell Inc JBM 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 marks and names or their products Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own December 1996 P N 84577 Contents Chapter 1 System OVervieW ooooooooocoococoononoo o 1 1 System Features tE AAA 1 2 Dual Processor Capability 1 5 Advanced Expansion Subsystem 1 5 Hard Disk Drive Options 1 6 Enhanced Dual Interface EIDE Subsystem 1 6 Audio Controller A EA dt A pe
20. Hz The system power supply provides the DC operating voltages and currents listed in Table 1 1 NOTE The power supply produces DC voltages only under its loaded condi tion Therefore when you measure these voltages the DC power connectors must be connected to their corresponding power input connectors on the system board or drives Table 1 1 DC Voltage Ranges Maximum Output Voltage Range Current 3 3 VDC 3 15 to 3 45 VDC 14 0 A 5 VDC 4 75 to 5 25 VDC 29 0 A 12 VDC 11 40 to 12 60 VDC 6 0 A 12 VDC 10 80 to 13 20 VDC 0 3 A 5 VDC 4 50 to 5 50 VDC 0 3 A 5 VFP 4 75 to 5 25 VDC 10 mA 1 Maximum continuous DC output power shall not exceed 230 W Maximum combined load on 5 VDC and 3 3 VDC shall not exceed 170 W 2 VFP volts flea power sometimes called standby power 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 The following illustrations show the wire side of the connectors Dell OptiPlex GXpro Systems Service Manual 5 VDC white 5 VDC rea common black 5 VDC red common black 5 VDC red common black TFSC brown PSON gray gt ie 5 VDC red 11 12 13 14 15 16 17 18 19 20 0000 000000 O0O000000000 1 2 3 4 5 6 7 8 9 10 5 VDC red common black common black common black 45 VDC rea 12 VDC blue c
21. Hz from the system clock Memory Architecture 64 bit noninterleaved DIMM sockets four DIMM capacities 16 32 64 and 128 MB EDO ECC mode Standard RAM 16 MB Maximum RAM 512 MB BIOS address F000 0000h F0000 FFFFh Drives Externally accessible bays one 3 5 inch bay 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 Internally accessible bays two hard disk drive bays one 1 6 inch high and one 1 inch high EIDE or SCSI hard disk drive Ports Externally accessible Serial DTE two 9 pin connectors 16550 compatible Parallel one 25 hole connector bidirectional Mide str des one 15 hole connector on add in video card PS 2 style keyboard 6 pin mini DIN PS 2 compatible mouse 6 pin mini DIN OE RJ45 connector USB cai ss two USB compliant connectors Audio lineiM miniature audio jack Audio speaker out miniature audio jack Audio mike in miniature audio jack Sysiem Overview 1 17 Table 1 5 Technical Specifications continued Ports continued Internally accessible EIDE hard disk drive Diskette drive two 40 pin connectors on PCI local bus 34 pin connector Video Video type PCI video card see manufacturer s specifica tions Key Combinations lt Ct
22. MMs Sh DIMM D4 He i f securing clip 2 Figure 4 19 DIMM Removal To remove a DIMM push outward on the DIMM socket s securing clips until the DIMM is released from its socket Then lift the DIMM away from the socket DIMM securing clip 2 1 Figure 4 20 DIMM Installation To replace a DIMM press outward on the securing clips at each end of the socket until they snap open Orient the DIMM to the socket and press the DIMM straight down into the socket slot until the securing clips snap into place around the ends of the DIMM 4 20 Dell OptiPlex GXpro Systems Service Manual Microprocessor Heat Sink Assembly heat sink microprocessor securing clip hooks over tabs cy on socket y gt front and back 97 microprocessor VS socket microprocessor release lever Figure 4 21 Microprocessor Securing Clip To remove the microprocessor heat sink assembly follow these steps 1 Remove the microprocessor securing clip from the microprocessor heat sink assembly WARNING The microprocessor chip can get extremely hot during system operations Be sure the chip has had sufficient time to cool before touching it Press down on the folded part of the clip with a small screwdriver to release the clip 2 Push outward and then upward on the microprocessor release lever to rotate the lever to its fully vertical position 3 Lift the microprocessor heat sink assembly out of its socket see Fig
23. Messages continued Message Definition Probable Causes No boot device avail able System does not recog nize diskette drive or hard disk drive from which it is trying to boot Faulty diskette diskette tape drive subsystem hard disk drive hard disk drive subsystem or no boot disk in drive A No boot sec tor on hard disk drive Configuration settings in System Setup pro gram incorrect or operating system cor rupted Incorrect configuration settings in System Setup program or no operating system on hard disk drive No timer tick interrupt Timer on system board malfunctioning Defective system board Non system disk or disk error Diskette in drive or hard disk drive does not have bootable oper ating system installed on it Faulty diskette diskette tape drive subsystem or hard disk drive sub system 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 d sec found Request tor not tot MS DOS cannot read from diskette or hard disk drive System could not find particular sector on disk or requested sec tor defective Faulty diskette diskette tape drive subsystem or hard disk drive sub system defective system board
24. PCI local bus operates at a frequency of 30 or 33 MHz as opposed to the 8 MHz operating frequency of the ISA bus NOTE Some users may use an ISA video adapter card Dell OptiPlex GXpro Systems Service Manual NIC GXpro systems contain either an integrated 10 Mbps or 10 100 Mbps 3Com NIC GXpro systems containing the 10 Mbps Ethernet NIC have a built in inte grated 3Com 3C915 NIC chip GXpro systems containing the 10 100 Mbps Ethernet NIC have a built in integrated 3Com 3C916 Ethernet NIC chip The NIC subsystem connects to the Ethernet network through a single RJ45 connec tor on the back panel of the computer The 10 100 Mbps NIC supports a 10 Mbps direct connection to either a cate gory 3 or a category 5 ethernet cable When the NIC operates in the 100 Mbps mode a category 5 ethernet cable must be used GXpro systems with the 10 100 Mbps NIC also contain two USB connectors Thus to determine whether a particular system contains the 10 100 Mbps NIC look for one of the following indications e USB connectors next to the NIC connector on the computer s back panel e The message USB Enhanced displayed during the boot routine e A USB category on page 2 of the System Setup If any of these indications are present your system has the 10 100 Mbps NIC Chapter 5 Using the Network Interface Controller in the User s Guide pro vides instructions for connecting the system to and configuring it for use on an Ethernet network U
25. SB USB capability simplifies connection of peripheral devices such as mice print ers and computer speakers The USB connectors on your computer s back panel provide a single connection point for multiple USB compliant devices USB compliant devices can also be connected and disconnected while the sys tem is running NOTE USB capability is available only on systems with the 10 100 Mbps NIC Desktop Chassis The system unit can be set horizontally or vertically when used with the floor stand provided with the system The floor stand attaches to the left side of the system Thermal Monitoring The primary and if installed secondary microprocessors have a thermal sensor that monitors the processor s temperature If the critical threshold is exceeded a system alarm triggers a system management interrupt SMI which alerts the BIOS The power indicator flashes and a message appears on the monitor to alert the user that the system will shut down in an orderly manner preventing the loss of data Sysiem Overview 1 7 1 8 SMART Support The system has SMART compliant hard disk drives and SMART support in the system BIOS which warns you at system start up 1f a hard disk drive has become unreliable System Unit The following subsections provide service related information about the system unit System Power Supply The 230 W system power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50
26. cedures in this chapter or the tests in the dis kette based diagnostics reveals the source of the problem or leads to the proper troubleshooting steps for determining the source of the problem call Dell for technical assistance For instructions see the chapter titled Getting Help in the Diagnostics and Troubleshooting Guide Dell OptiPlex GXpro Systems Service Manual This chapter describes beep codes and system error messages that can occur during system start up or in the case of some failures during normal system operation The tables in this chapter list faults that can cause a beep code or sys tem error message to occur and the probable causes of the fault in each case If a faulty system does not emit beep codes or display system error messages to indicate a failure you should use the diskette based diagnostics to run the appropriate tests to help isolate the source of the problem See Running the Diskette Based 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 during the POST Most beep codes indicate a fatal error that prevents the system from completing the boot routine until the indicated condition is corrected When the system emits a beep code record the code and then find it
27. controller defective system board 3 3 4 3 4 1 3 4 2 Screen initialization failure Screen retrace test failure Search for video ROM failure Faulty video subsystem defective video expansion card 4 2 1 4 2 2 494 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 OFFFFh Faulty or improperly seated DIMMSs Dell OptiPlex GXpro Systems Service Manual Table 3 1 POST Beep Codes continued Beep Code Error Probable Causes 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 defective sys tem board System Error Messages Table 3 2 lists in alphabetical order system error messages that can appear on the monitor screen These messages can help you find the source of a problem Some of these error messages indicate fatal errors When a fatal error occurs the system usually cannot be rebooted until an appropriate hardware change has been made The following messages indicate a fatal error Bad rror correction code ECC on disk read Controller has failed Da Ga ta te Hard Hard error A20 failure disk controller failure disk drive read failure Hard disk failure Incompatible P
28. e 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 system unit cover When these clips are released the button comes free from the front panel of the cover Removing and Replacing Parts 4 5 Front Panel Inserts system unit cover upside down 5 25 inch front panel insert post 2 ring tab 2 Figure 4 5 Front Panel Insert Removal To remove a front panel insert follow these steps 1 Lay the system unit cover upside down on a flat work surface with the back of the cover facing you 2 For a 5 25 inch bay pull the insert from the two retaining posts until the ring tabs are released see Figure 4 5 For the 3 5 inch bay locate the spring loaded back end of the eject button mechanism Press the mechanism toward the front panel to snap the plastic insert out of its opening see Figure 4 4 To replace a front panel insert for a 5 25 inch bay position the insert over the drive bay opening Place the panel over the retaining posts and then press hard to get the ring tabs over the posts If necessary use a 1 4 inch nutdriver to help push the ring tabs To replace the front panel insert for the 3 5 inch bay from outside the cover place the insert in position and press it int
29. em power supply CD ROM tape drive interface cable hard disk drive bracket power input connectors connector IDE1 IDE2 connector connector Figure 4 8 Drive Hardware Removing and Replacing Parts 4 9 Drives in the Drive Cage retaining screw ___ _ 9 bracket mounting screw 2 ox L hook 2 K iN LO lt y AJ bracket catch yom Figure 4 9 3 5 Inch Diskette Drive Removal To remove a drive from the 3 5 inch diskette drive bay follow these steps 1 Disconnect the DC power cable and the interface cable from the back of the drive 2 Remove the bracket retaining screw 3 Release the bracket catch from the chassis To replace a 3 5 inch diskette drive locate the two hooks on the right side of the bracket that hold the drive in position Engage those two hooks in the side of the Rotate the drive bracket to the right and lift the bracket from the top of the drive bay Remove the two mounting screws from each side of the drive and remove the drive from the bracket drive 4 10 Dell OptiPlex GXpro Systems Service Manual retaining tab 2 Figure 4 10 5 25 Inch Drive Removal To remove a 5 25 inch drive from the middle or lower drive bay follow these steps 1 Disconnect the DC power cable and the interface cable from the back of the drive 2 Press out on the two retaining tabs on the sides of the drive bay slide the drive forward and remove it
30. ement Regular Integrated Devices Sound On NIC On Mouse On Microprocessor Pentium Pro 200 Serial Port 1 Auto Level 2 Cache 512 KB Integrated Serial Port 2 Auto System Memory 64 MB ECC EDO Parallel Port 378h Service Tag XXXXX Parallel Mode AT IDE Hard Disk Auto Diskette Auto USB On Speakers On Tab Shift Tab change fields lt gt change values Alt P next Esc exit Alt B reboot Figure A 1 System Setup Screens Dell OptiPlex GXpro Systems Service Manual Table A 1 System Setup Categories Category Function Time Resets time on system s internal clock Date Resets date on system s internal calendar Diskette Drive A Identifies type of diskette drives installed Cat Diskette Drive B egory options always match physical locations of drives in system unit Tape drives are not reflected in these categories Drive A Location Identifies which diskette drive is used as the boot drive Drives Primary Secondary Identifies drives attached to the IDE1 and IDE2 connectors on system board Each EIDE connector supports two EIDE drives Drive 0 and Drive 1 For EIDE hard disk drives the system pro vides an automatic drive type detect feature To use this feature highlight the appropriate drive category and type a for automatic If none of the supported drive types match the parameters of the new drive enter the parame ters directly To do so highlight the appro
31. f the troubleshooting pro cedure indicates that the system power supply is operational troubleshoot the memory 4 During the boot routine observe the system unit for any of the following e Diskette drive and hard disk drive access indicators These indicators light up in response to data being transferred to or from the drives If either of these indicators fails to light up during the boot routine trouble shoot the diskette drive or hard disk drive subsystem as appropriate Basic Troubleshooting 2 4 e System error messages These messages can indicate problems or pro vide status information If a system error message is displayed see Table 3 2 e Beep codes A beep code is a series of beeps that indicates an error con dition If the system emits a beep code see Table 3 1 NOTE The system beeps once during the boot routine This single beep is normal and is not a beep code 5 Observe the monitor screen for the Diagnostics Menu Does the Diagnostics Menu appear Yes See Running the Diskette Based 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 Diskette Based Diagnostics found later in this chapter No Proceed to the next section Internal Visual Inspection Internal Visual Inspection CAUTION Before you proceed
32. from the drive bay Removing and Replacing Parts 4 11 Hard Disk Drives handle screw hook 2 hard disk drive bracket Figure 4 11 Hard Disk Drive Bracket Removal To remove a hard disk drive bracket follow these steps 1 Disconnect the DC power cable s and the interface cable s from the back of the drive s 2 Remove the screw that secures the hard disk drive bracket to the chassis 3 Grasp the handle on the front of the bracket and rotate the bracket back until it swings free from the chassis Disengage the bracket from the two hooks on the bottom of the chassis support 4 Lift the hard disk drive bracket out of the system unit 4 12 Dell OptiPlex GXpro Systems Service Manual drive bracket mounting screw 4 o hard disk drive hard disk drive bracket Figure 4 12 Hard Disk Drive Removal To remove a hard disk drive follow these steps 1 Remove the hard disk drive bracket from the system unit See the preceding procedure 2 Remove the four screws that secure the hard disk drive s to the bracket 3 Slide the drive s out of the hard disk drive bracket Removing and Replacing Parts 4 13 System Power Supply power supply rued Z gy Ly securing DC power tab 1 cable 8 0 slot Figure 4 13 Power Supply Removal To remove the system power supply follow these steps 1 Disconnect the AC power cable from the back of the power supply 2 Disconnect the DC
33. hard disk drive power cable s Slide any drives in the 5 25 inch bays toward the front of the system unit but leave them cabled 5 Remove the system board as follows a Remove the screw that secures the system board to the bottom of the system unit b Slide the system board toward the front of the system unit approxi mately one half inch to release the board from the seven slots in the floor of the system unit c Lift the system board out of the system unit If you are replacing a system board remove the DIMMs the microprocessor the terminator or add in card and the expansion card cage from the old system board and install them on the replacement board 4 26 Dell OptiPlex GXpro Systems Service Manual ra System Setup Program This appendix describes the System Setup program which is used to change the system configuration information stored in NVRAM on the system board To enter the System Setup program follow these steps 1 Turn on or reboot the system 2 Press lt Ctrl gt lt Alt gt lt Enter gt immediately after the monitor displays the message Press lt CTRL gt lt ALT gt lt ENTER gt 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 Let the system complete the load operation then shut down the system and try again NOTE To ensure an orderly system shutdown consult the documentation that acco
34. illustrated 4 25 removing and replacing 4 25 socket 1 12 4 16 beep codes 3 1 BIOS chip 1 12 4 16 boot routine observing when trouble shooting 2 3 bracket hard disk drive 1 4 4 12 C cables DC power 1 4 1 10 diskette tape drive interface 1 4 EIDE 4 9 card slot opening 1 4 4 18 CD ROM connector 1 12 drives 4 11 chassis 1 4 computer technical specifications 1 16 configuration jumpers location 1 12 4 16 connectors location on back of system unit 1 4 location on system board 1 12 4 16 cover system unit removal 4 4 D DC power 1 4 1 8 1 10 DC power cables 1 4 DC power connectors 1 8 DC power distribution diagram 1 11 diagnostics 2 5 DIMMs about 1 13 location 1 12 4 16 removal 4 20 diskette drives interface cable 1 4 interface connector 1 12 4 16 removal 4 10 4 11 diskette based diagnostics 2 5 DREQ line assignments 1 15 drive cage 1 4 4 10 drive hardware 4 9 Index 1 drives 1 17 4 9 DSKT connector 1 12 4 16 dual processing 1 5 E ECC DIMMs 1 2 EDO DIMMs 1 2 1 13 EIDE connectors 1 12 4 9 4 16 eject button removal 4 5 enhanced dual interface EIDE subsystem 1 6 error messages system list of 3 3 ESD 4 2 expansion cards card slot opening 1 4 4 17 4 18 connectors 1 12 4 16 removal 4 18 expansion slots 1 5 expansion subsystem advanced 1 5 expansion card cage removal 4 17 external visual
35. ilt in parallel port The port s I O address may be set to 278H 3BCH or 378H Otherwise the port may be dis abled Parallel Modes Controls whether system s built in parallel port acts as an AT compatible unidirectional or PS 2 compatible bidirectional port IDE Hard Disk Enables system s built in EIDE hard disk drive interface Diskette Enables system s built in diskette controller USB Enables On or disables Off default the USB connectors NOTE This category appears only on GXpro systems containing the 10 100 Mbps Ethernet NIC Speaker Enables on board speaker System Setup Program A 5 A 6 Table A 1 System Setup Categories continued Category Function 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 five character service tag number Asset Tag Displays the asset tag number up to ten charac ters if one is assigned Dell OptiPlex GXpro Systems Service Manual Index Numbers 3 3 V power input connectors 1 12 4 16 A AC power receptacle 1 4 add in card removal 4 24 audio controller 1 6 B battery
36. in Table 3 1 If the table does not lead to the source of the problem run the appro priate tests in the diskette based diagnostics to assist in troubleshooting the problem Table 3 1 POST Beep Codes Beep Code Error Probable Causes 1 3 Monitor not detected Disconnected or faulty moni tor 1 1 3 NVRAM write read failure Defective system board 1 1 4 BIOS checksum failure Faulty BIOS or defective sys tem board 1 2 1 Programmable interval timer Defective system board failure 1 2 2 DMA initialization failure 1 2 3 DMA page register write read failure Beep Codes and Error Messages 3 1 3 2 Table 3 1 POST Beep Codes continuea Beep Code Error Probable Causes 1 3 1 Main memory refresh verifi cation failure Faulty or improperly seated DIMMs or defective system board 1 3 3 23 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 KB of main memory Bit failure in the first 64 KB of main memory Faulty or improperly seated DIMMs 3 1 1 Slave DMA register failure Master DMA register failure Master interrupt mask regis ter failure Slave interrupt mask register failure Defective system board 3 2 4 Keyboard controller test fail ure Faulty keyboard
37. inspection 2 2 F fan connector 1 12 4 16 fatal error messages 3 3 floor stand removal 4 3 front panel 1 4 front panel inserts removal 4 6 Dell OptiPlex GXpro Systems Service Manual H hard disk drive access indicator 1 4 hard disk drives about 1 6 bracket 1 4 4 12 connectors 1 12 4 9 4 16 location 1 4 removal 4 13 help getting 2 6 I IDE1 connector 1 12 4 9 4 16 IDE2 connector 1 12 4 9 4 16 indicator card removal 4 7 indicators 1 4 initial procedures 2 1 initialization error messages 3 3 interface cables 1 4 interrupt assignments list of 1 14 ISA expansion cards 1 5 1 12 4 16 4 17 4 18 J jumpers list of 1 14 K key combinations to enter System Setup program A 1 keyboard connector location 1 4 1 12 4 16 L LINE IN connector 1 12 4 16 line in jack 1 4 1 12 4 16 M memory main 1 2 1 13 messages error 3 3 microphone jack 1 4 1 12 microprocessor release lever 4 21 removal 4 21 secondary removal 4 23 socket 1 12 4 16 microprocessor fan removal 4 15 mouse connector location on back panel 1 4 location on system board 1 12 4 16 N NIC description 1 7 location 1 4 1 12 P padlock 4 4 PANEL connector 4 16 Panel connector 1 12 parallel port connector location 1 4 1 12 4 16 PCI expansion cards 1 5 1 12 4 16 4 17 4 18 PCI video card 1 6 Plug and Play expansion cards 1 5 POST beep codes
38. lfunctioning or one or more DIMMs improperly seated Improperly seated DIMMs or faulty key board mouse controller chip defective system board Warning Thermal probes failed At system start up BIOS detected that one or both thermal probes are nonoperational Defective system board Beep Codes and Error Messages 3 9 Table 3 2 System Error Messages continued Message Definition Probable Causes Warning Temperature is too high At system start up BIOS detected that one or both micro processors have overheated One or both micro processors are too hot Write fault Write fault on selected drive MS DOS cannot write to diskette or hard disk drive Faulty diskette or hard disk drive 3 10 Dell OptiPlex GXpro Systems Service Manual JA ak 0 TA emoving and Replacing Parts This chapter provides procedures for removing the components assemblies and subassemblies in the system unit Unless otherwise noted each procedure assumes the following e You have performed the steps in Precautionary Measures found later in this chapter e You have removed the system unit cover e 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 e Small flat blade sc
39. mpanied the operating system System Setup Program A 1 System Setup Screens Dell Computer Corporation Page 1 of 2 System OptiPlex GXpro 200 Setup BIOS Version XXX Time 13 17 02 Date Mon Jan 6 1997 This category sets the time in Diskette Drive A 3 5 inch 1 44 MB 24 hour format hours minutes Diskette Drive B Not Installed seconds for the internal clock pr A Location Top calendar rives Primary Type Cyls Hds Pre LZ Sec Size To change the value in a field Drive 0 Auto 524 32 1 524 63 540 enter a number or use the left Drive 1 None or right arrow key Secondary Drive 0 Auto Packet Interface Devic Drive 1 None Microprocessor Pentium Pro 200 p page Memory O Level 2 Cache 512 KB Integrated Pxtended Memory 93 MB System Memory 64 MB ECC EDO Reserved Memory None Service Tag XXXXX Fast Video BIOS On CPU Speed 200 MHz Tab Shift Tab change fields lt gt change values Alt P next Esc exit Alt B reboot Dell Computer Corporation Page 2 of 2 System OptiPlex GXpro 200 Setup BIOS Version XXX E A R Keyboard Errors eport This category determines whether System Password Not Enabled keyboard related error messages ar Password Status Unlocked g reported at system startup Boot Sequence Diskette First Setup Password Not Enabled Auto Power On Mon Fri 07 30 Power Manag
40. n card installed on the system board This section describes removing and replacing the terminator card and the add in card Terminator Card terminator card Figure 4 23 Terminator Card Removal To remove a terminator card follow these steps 1 Grasp the small white handle installed on the top of the card If a handle is not installed use the handle that is in the upgrade kit with the secondary microprocessor Fit the handle over the top of the card so that the nubs of the handle fit through two holes in the top of the card 2 Pull straight up on the card to free it from the connector Removing and Replacing Parts 4 23 Add In Card mounting bracket edge AA C NI card guide mounting bracket edge tab metal mounting eS bracket Figure 4 24 Add In Card Removal To remove an add in card follow these steps 1 Gently grip the card s metal mounting bracket with both hands 2 Pull up until the card is freed from the connector To reinstall the card with the metal mounting bracket facing the left side of the chassis fit the edge of the bracket into the card guide attached to the back wall of the chassis Make sure that the bracket edge tab is below the bottom of the guide 4 24 Dell OptiPlex GXpro Systems Service Manual System Battery battery BATTERY socket i Pr N Figure 4 25 System Battery Removal To remove the system battery follow these steps 1 If possible enter the System
41. n cards the next time the system is rebooted Chapter 4 Using the ISA Configuration Utility in the User s Guide describes the ICU and provides instructions for using it to con figure the system The five expansion slots include two ISA expansion card connectors and five PCI expansion card connectors Two PCI expansion card connectors and the two ISA expansion card connectors share a single expansion slot resulting in a total of five expansion slots The expansion card connectors are located on a riser board see Figure 1 4 MA PCI5 ISA 1 AAA AAA C et JMIDI connector AE Por JHDLED connector Figure 1 4 Riser Board Expansion Card Connectors Sysiem Overview 1 5 1 6 Hard Disk Drive Options The hard disk drive bracket is located next to the drive bays at the front of the system unit The system unit can contain up to two one inch high hard disk drives or one 1 6 inch high half height and one one inch high hard disk drive Enhanced Dual Interface EIDE Subsystem The enhanced dual interface EIDE subsystem supports two EIDE interfaces primary and secondary each of which can support up to two EIDE devices The EIDE controller resides on the high speed PCI local bus e The primary EIDE interface IDE1 provides support for up to two high performance EIDE devices The system s boot drive should be connected to the primary EIDE interface e The secondary EIDE interface IDE
42. nostics The diskette based diagnostics included with the system contains tests that aid in troubleshooting all major components of the computer system CAUTION To prevent damage to the original diagnostics diskette always use a backup copy of the diagnostics diskette when servicing a user s system Dell recommends that users make several copies of this diskette to ensure that one is always available Basic Troubleshooting 2 5 2 6 To start the diagnostics turn off the system unit insert a diagnostics diskette into drive A and then turn on the system unit Starting the diagnostics causes the Dell logo screen to appear on the monitor screen followed by a message indicating that the diagnostics is loading Before the diagnostics loads a program tests the portion of main memory RAM required for loading the diagnostics If a RAM error is detected a message appears on the screen telling you which DIMM has failed 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 e 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 e Run All Tests Runs all tests for a thorough test of the system e Run Specific Tests Tests a particular area or subsystem Getting Help If none of the troubleshooting pro
43. nostics for more information about Run Quick Tests see Running the Diskette Based Diagnostics in Chapter 2 All of these features except the Run Quick Tests feature described in Chap ter 2 are briefly described in this chapter For a complete list of system features see Technical Specifications found later in this chapter When following the text in this manual assume that the location or direction relative to the system unit is as shown in Figure 1 1 Dell OptiPlex GXpro Systems Service Manual back of system unit left side right side front of system unit Figure 1 1 System Unit Orientation CAUTION To avoid possible data or file structure corruptions the front panel reset button should be used only when the system cannot be rebooted by pressing lt Ctrl gt lt Alt gt lt Del gt Before you use the reset button to initiate a hardware reset close any open application programs and files if possible Sysiem Overview 1 3 power button A power indicator NS N reset button hard disk drive access indicator Figure 1 2 Front Panel Features 3 5 inch drive drive cage diskette tape drive D interface cable hard disk drive bracket DC power cable system board power supply ne expansion card AC power receptacle voltage selection switch parallel port connector cage SRN serial port 1 connector TSR gt chassis mouse connector keyboard c
44. o the opening 4 6 Dell OptiPlex GXpro Systems Service Manual Indicator Card SE indicator card Ya o gt ZZ 2 Se SCrEW AN AA speaker indicator card connector cable Figure 4 6 Indicator Card Removal To remove the indicator card follow these steps 1 Remove the hard disk drive bracket See Drives found later in this chapter 2 Remove the speaker connector from the indicator card 3 Disconnect the indicator cable from the system board Slide the indicator cable through the cable slot in the bottom of the chassis 4 Remove the mounting screw holding the indicator card to the chassis 5 Rotate the card to the left and lift it out of the hooks holding it to the chassis Removing and Replacing Parts 4 7 Speaker speaker connector retaining slot speaker Figure 4 7 Speaker Removal To remove the speaker follow these steps 1 Remove the hard disk drive bracket See Drives found later in this chapter Remove the speaker connector from the indicator card Lift the speaker out of the retaining slots on the front of the chassis 4 8 Dell OptiPlex GXpro Systems Service Manual Dri ves Figure 4 8 shows an example of drive hardware that can be installed in the sys tem unit Refer to this figure when you perform any of the procedures in the following subsections two bay diskette tape drive 3 5 inch diskette DC power cable drive cage interface cable drive syst
45. ommon black 12 VDC yellow PWRGOOD orange 5 VFP purple Pin 11 PSONH should measure between 4 and 5 VDC except when the power button on the front panel is pressed taking PSONF to its active low state N Pin 19 Thermal fan speed control TFSC is a power supply input signal used to control power supply fan speed in special applications UY Pin 5 PWRGOOD should measure between 4 and 5 VDC when the power supply is on and operating to indicate that all power supply output voltages are within ranges specified in Table 1 1 Figure 1 5 DC Power Connector P1 OOOO Es ES A VA P 5 P 6 3 4 1 2 3 4 L 12 VDC yellow L 5VDC red common black common black common black common black 5 VDC red 12 VDC yellow Figure 1 6 DC Power Connectors P2 P3 P4 P5 and P6 System Overview 1 9 PE AA pogo OO 7 1 2 3 4 5 6 LL 43 3 VDC blue white 3 3 VDC blue white 3 3 VDC blue white common black common black common black Figure 1 7 DC Power Connector P7 DC Power Distribution Figures 1 8 and 1 9 provide the following information about DC power distribution e Power supply connector identification e Power cable connections for diskette tape CD ROM and hard disk drives e Power distribution to sockets and connectors on the system board Figure 1 8 DC Power Cables 1 10 Dell OptiPlex GXpro Systems Service Manual system
46. on removing and replacing DIMMs System Board Jumpers jumpered unjumpered Figure 1 11 System Board Jumpers System Overview 1 13 Table 1 2 Jumper Descriptions Default Jumper Description Setting PSWD Password enable disable Installed password feature Jumper installed activates enabled password feature BIOS Used for internal Dell Not installed reserved do not debug tool change RSRVD4 Reserved Not installed reserved do not RSRVD3 change RSRVD2 RSRVD1 200MHZ Microprocessor speed Installed 1f the micro processor s internal speed is 200 MHz or else not installed 180MHZ Microprocessor speed Installed if the micro processor s internal speed is 180 MHz or else not installed Interrupt Assignments Table 1 3 Interrupt Assignments IRQ Line Used By Available IRQO IRQ1 IRQ2 IRQ3 and IRQ4 IRQ5 IRQ6 IRQ7 Generated by system timer Generated by keyboard controller to indicate that keyboard s out put buffer is full Generated internally by interrupt controller to enable IRQ8 through IRQ15 Generated by super I O controller to indicate that device con nected to corresponding serial port requires service IRQ3 for COM2 or COM4 IRQ4 for COM 1 or COM3 Available for use by expansion card unless this IRQ line is used by secondary parallel port Generated by super I O controller to indicate that diskette or tape drive requires service Generated by
47. onnector N Q serial port 2 connector p D Is USB connector 2 NIC connector video connector card slot openings microphone jack s line in jack speaker out jack METER Figure 1 3 Internal View 1 4 Dell OptiPlex GXpro Systems Service Manual Dual Processor Capability With the installation of a microprocessor add in card in the terminator card slot the system unit becomes a dual processing system The add in card s micro processor must have the same frequency and cache size as the system board s microprocessor In order to take advantage of two processors dual processing systems must have multiprocessing operating systems such as the Microsoft Windows NTO 3 5x Windows NT 4 0 and Novell NetWare SMP symmetric multiprocessing operating systems The microprocessor chips on both the system board and the processor card are replaceable Advanced Expansion Subsystem The computer system offers 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 ISA Configuration Utility ICU included with the system provides a means of avoiding resource conflicts that might arise from such an arrangement After all legacy cards have been configured with the ICU the system automati cally assigns any required memory space IRQ lines and DMA channels to any installed Plug and Play ISA expansion cards and PCI expansio
48. pansion cards and the riser board 2 Rotate the lever toward the back of the system unit until it stops in the upright position 3 Lift the expansion card cage up and away from the system unit To replace an expansion card cage keep the cage flush against the chassis to insure that the lever engages the notch when the lever is depressed Removing and Replacing Parts 4 17 Expansion Card expansion card expansion card connector Figure 4 17 Expansion Card Removal To remove an expansion card follow these steps 1 Remove the expansion card cage See the preceding procedure Remove the retaining screw from the card mounting bracket Grasp the expansion card by its corners and carefully remove it from the expansion card connector 4 18 Dell OptiPlex GXpro Systems Service Manual Riser Board retaining screw 2 slot 2 Pa expansion card cage riser board Figure 4 18 Riser Board Removal To remove the riser board follow these steps 1 Remove the expansion card cage and all expansion cards See the preceding two procedures On a flat work surface turn the expansion card cage over with the riser board facing you 3 Remove the riser board retaining screws Slide the riser board down approximately one half inch to release the board from the two slots on the expansion card cage Lift the riser board away from the expansion card cage Removing and Replacing Parts 4 19 DI
49. power cables from the system board drives and expansion cards 3 Free the system power supply from the securing tab labeled RELEASE gt and rotate it to the right until it stops Press the securing tab to the left to disengage the power supply 4 Free the power cable bundle from the hook on the bottom of the chassis 5 Lift the front end of the system power supply up and move it to the right to disengage the power supply from the slot in the chassis 6 Lift the system power supply from the system unit 4 14 Dell OptiPlex GXpro Systems Service Manual Microprocessor Fan EG Pee 3 microprocessor ZI fan connector latching tab 4 LA SA power cable AA Ja Figure 4 14 Microprocessor Fan Removal To remove the system power supply follow these steps 1 Rotate the power supply to the right to access the microprocessor fan connector See System Power Supply found earlier in this chapter 2 Sqeeze the latch and pull out the fan power cable from the micro processor fan connector located on the system board under the power supply 3 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 4 Remove the fan Pull the fan forward and out of the system unit Removing and Replacing Parts 4 15 System Board Components The subsections that follow contain procedures for removing system board
50. priate drive category Drive 0 and Drive 1 and type u to display Userl Press lt Tab gt 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 Base Memory Displays amount of memory available to MS DOS programs that do not use extended or expanded memory Extended Memory Displays amount of memory available as extended memory System Setup Program A 3 A 4 Table A 1 System Setup Categories continued Category Function Reserved Memory Designates a region of system board memory that can be supplied by an expansion card This feature should not be enabled unless an expansion card that requires special addressing 1s installed Fast Video BIOS Enables shadowing and caching the BIOS for a video card installed in an expansion slot NOTE Some video cards are not designed to be shadowed or cached If video problems occur try setting Fast Video BIOS to Off CPU Speed Indicates processor speed at which system boots the processor s rated speed or a slower compatibility speed Num Lock Determines whether keyboard s Num Lock mode is activated Keyboard Errors Enables or disables reporting of keyboard errors during POST System Password Displays curren
51. raining 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 the Diagnostics and Troubleshooting Guide for troubleshooting pro cedures and instructions on using the Dell diagnostics to test the computer system Warnings Cautions and Notes Throughout this manual there may be blocks of text printed in bold type or in italic type These blocks are warnings cautions and notes and they are used as follows WARNING A WARNING indicates the potential for bodily harm and pro vides instructions for how to avoid the problem CAUTION A CAUTION indicates either potential damage to hardware or loss of data and provides instructions for how to avoid the problem NOTE A NOTE provides helpful information about using the computer system System Overview This service manual covers the Dell OptiPlexO GXpro high speed upgrad able desktop systems which use the Intel Pentium Pro family of microprocessors These Dell systems incorporate the high performance PCI local bus as well as the ISA expansion bus These buses are built into the system board which also integrates a 3 3 V Pentium Pro microprocessor and all other elements of the basic computer system The Pentium Pro microprocessor contains a built in clock multiplier circuit which increases the microprocessor s internal operating frequency to a m
52. rasp the card by its top corners and carefully pull it out of its connector Reinsert the card in its connector and carefully push it in until it is fully seated Then reinstall the card mounting bracket s retaining screw 4 Verify that all jumpers are set correctly For information about these jumpers see System Board Jumpers in Chap ter 1 5 Check all cable connectors inside the system unit to verify that they are firmly attached to their appropriate connectors 6 Reinstall the system unit cover 7 Reconnect the system unit 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 Terminate the procedure No Proceed to Eliminating Resource Conflicts Running the Diskette Based Diagnostics and to Getting Help found later in this chapter Eliminating Resource Conflicts Devices within the system unit may require dedicated memory spaces interrupt levels or DMA channels all of which must be allocated during installation of the devices Because a device may be installed at a different time it is possible that the same resource is assigned to two or more devices Resource conflicts can result in disorderly or erratic system operation or failure of the system to operate at all If you suspect that resource conflicts might exist check the system and reassign the resources as necessary R unning the Diskette Based Diag
53. rewdriver e Wide flat blade screwdriver e Number I and number 2 Phillips head screwdrivers e Chip removal tool e 1 4 inch nutdriver e Tweezers or long nose pliers Also use a wrist grounding strap as explained in the next section Precaution ary Measures Removing and Replacing Parts 4 1 Precautionary Measures Before you perform any of the procedures in this chapter take a few moments to read the following warning for your personal safety and to prevent damage to the computer system from ESD WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT Before you start to work on the computer perform the following steps in the sequence indicated 1 Turn off the system unit and any attached peripherals 2 Disconnect the system unit and any attached peripherals from their power sources to reduce the potential for personal injury or shock 3 Wear a wrist grounding strap and clip it to an unpainted metal sur face such as the system power supply s fan guard on the chassis If a wrist grounding strap is not available touch the fan guard or some other unpainted metal surface on the back of the system unit to discharge any static charge from your body 4 2 Dell OptiPlex GXpro Systems Service Manual Floor Stand floor stand screw Figure 4 1 Floor Stand Removal To remove the floor stand follow these steps 1 Place left side of the system unit on a flat work
54. rl gt lt Alt gt lt Del gt lt Ctrl gt lt Alt gt lt Enter gt lt Ctrl gt lt Alt gt lt gt lt Ctrl gt lt Alt gt lt gt restarts reboots the system starts System Setup program during POST only toggles microprocessor speeds on 101 key keyboard in MS DOS real mode only toggles microprocessor speeds on 102 key keyboard Controls and Indicators Reset control push button Power control push button Power indicator green LED Hard disk drive access indicator green LED Link integrity indicator on NIC connector green LED Activity indicator on NIC connector yellow LED Power DC power supply Wattage 230 W Heat dissipation 600 BTUs nominal Voltage 90 to 135 V at 60 Hz 180 to 265 V at 50 Hz Backup battery 3 V CR2032 coin cell 1 18 Dell OptiPlex GXpro Systems Service Manual Table 1 5 Technical Specifications continued Physical BIS seem eS 16 5 cm 6 5 inches Widtbissssssvsussssevatssk 41 9 cm 16 5 inches Dept ls a tot 44 5 cm 17 5 inches Environmental Weight 12 7 kg 28 Ib or more depending on options installed Temperature Operating 10 to 35 C 50 to 95 F St rage ni aye ees 40 to 65 C 40 to 149 F Relative humidity 8 to 80 noncondensing Maximum vibration Operating
55. rocessor CPUO is BO step or below Incompatible Processor CPUl is BO step or below Incompatible Processors Cache sizes different Keyboard clock line failure Keyboard controller failure Keyboard data line failure Keyboard stuck key failure No Shu timer tick interrupt tdown failure Terminator processor card not installed System HALTED Timer chip counter 2 failed Unexpected interrupt in protected mode Beep Codes and Error Messages 3 3 Table 3 2 System Error Messages Message Definition Probable Causes Address mark not found Attachment failed to respond BIOS found faulty disk sector or could not find particular disk sector Diskette drive or hard disk drive controller cannot send data to associated drive Faulty diskette tape drive subsystem or hard disk drive subsystem defec tive system board Faulty interface cable or connec tor Bad command or file name Command entered does not exist or is not in pathname specified Bad command Bad error correction code ECC on disk read Controller has failed Diskette drive or hard disk drive controller detected uncorrectable read error Hard disk drive or associated controller defective Faulty diskette tape drive subsystem or hard disk drive subsystem defec tive system board Data error System received un recoverable data read error from disket
56. spection reveal any problems Yes Proceed to the appropriate procedure in Chapter 4 Removing and Replacing Parts No Proceed to the next section Observing the Boot Routine Observing the Boot Routine After you have performed an external visual inspection as described in the pre vious section you should boot the system and while the boot routine is running observe the system for any indications of problems NOTE Most of the steps in this procedure require observation of system func tions and indications 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 diagnostics diskette into drive A Turn on all peripherals and the system unit If the system unit is already on press the reset button or lt Ctrl gt lt Alt gt lt Del gt to reboot the system 2 Check the power supply fan Does the fan run normally Yes Proceed to step 3 No Troubleshoot the system power supply 3 Watch the Num Lock Caps Lock and Scroll Lock indicators on the upper right corner of the keyboard After all three indicators flash momentarily the Num Lock indicator should light up and remain on Do these indicators flash on and off within approximately ten seconds after the boot routine starts Yes Proceed to step 4 No Troubleshoot the system power supply I
57. super I O controller to indicate that device con nected to parallel port requires service 1 14 Dell OptiPlex GXpro Systems Service Manual Table 1 3 Interrupt Assignments continued IRQ Line Used By Available 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 keyboard controller to indicate that mouse s output buffer is full IRQ13 Generated by math coprocessor to indicate coprocessor error IRQ14 Generated by device connected to primary EIDE port to indicate that device requires service If no EIDE devices are installed this line is available for other use IRQ15 Generated by device connected to secondary EIDE port to indi cate that device requires service If no device is connected to secondary EIDE port IRQ15 is available for use by expansion card Dma Channel Assignments Table 1 4 DREQ Line Assignments DREQ Line Used By Available DREQO DREQI DREQ2 DREQ3 DREQ4 DREOS DREQ6 DREQ7 Available Available Generated by super 1 O controller to initiate DMA cycle for attached diskette drive Available Generated by bus controller chip to activate second DMA con troller Available default DMA on board sound controller Available Available Sysiem Overview 1 15 Technical Specifications Table 1 5 Technical Specifications
58. surface 2 Unscrew the floor stand screw Use your fingers or a wide flat blade screwdriver to unscrew the floor stand screw The screw is captured and separated from the floor stand 3 Pull the floor stand away from the system unit Disengage the three orientation nubs that position and help hold the floor stand to the system unit Removing and Replacing Parts 4 3 System Unit Cover securing front of system unit button Figure 4 2 System Unit Cover Removal To remove the system unit cover follow these steps 1 Remove the padlock if one is installed back of system unit Figure 4 3 Padlock Removal 2 Press in the two securing buttons until the cover is free to swing up 3 Lift the cover from the back pivoting it toward the front of the system unit 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 system unit 4 4 Dell OptiPlex GXpro Systems Service Manual Eject Power and Reset Buttons system unit cover upside down AI 4 Z eject button Y A PE 4 Z power button 9 3 5 inch front KS panel insert Figure 4 4 Eject Power and Reset Button Removal A To remove the eject power and reset buttons follow these steps 1 Lay the system unit cover upside down on a flat work surface with the back of th
59. t status of system s password security feature Also used to assign and verify a new password Password Status Provides an extra measure of system security by letting you set the system password to Locked or Unlocked Boot Sequence Determines whether system boots from dis kette 1f present or hard disk drive Setup Password Restricts access to System Setup program Dell OptiPlex GXpro Systems Service Manual Table A 1 System Setup Categories continuea Category Function Power Management With the Power Management category enabled DPMS monitors and most EIDE drives automatically switch into low power mode during periods of system inactivity CAUTION Before enabling this feature check the monitor documentation to make sure the system has a DPMS compliant monitor Otherwise 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 controller Mouse Enables or disables the built in PS 2 compatible mouse port Serial Port 1 Serial Port 2 Configures system s built in serial ports Parallel Port Configures system s bu
60. te or hard disk drive Faulty diskette diskette drive or hard disk drive Decreasing available mem ory 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 Diskette tape drive con troller could not locate specific sector or track Faulty or improperly inserted diskette incorrect settings in Sys tem Setup program loose diskette tape drive interface cable or loose power cable Diskette read failure Failure occurred while system attempted to read diskette Faulty diskette faulty or improperly connected diskette tape drive inter face cable or loose power cable Dell OptiPlex GXpro Systems Service Manual Table 3 2 System Error Messages continued Message Definition Probable Causes Diskette sub system reset failed System could not suc cessfully issue reset command to diskette controller Faulty diskette tape drive controller defective sys tem board Diskette write pro tected Diskette write protect feature activated Diskette write protected Drive not ready Diskette missing from or improperly inserted in diskette drive Missing defective unfor matted or improperly inserted diskette Gate A20 fail ure Gate A20 of the keyboard controller malfunctioned
61. ultiple of the system clock frequency The microprocessors for each of these systems and their operating frequencies are as follows e Dell OptiPlex GXpro 180 systems 180 MHz derived from a system clock frequency of 60 MHz e Dell OptiPlex GXpro 200 systems 200 MHz derived from a system clock frequency of 66 MHz Dell OptiPlex GXpro systems contain either an integrated 10 Mbps or 10 100 Mbps 3Com NIC both of which are covered in this document System Overview 1 1 1 2 System Features In addition to the standard features found in a traditional personal computer the Dell OptiPlex GXpro desktop systems include the following new and or advanced features Dual processor capability Advanced combination ISA and PCI expansion subsystem Plug and Play capability Enhanced dual interface EIDE subsystem 16 bit integrated audio controller PCI video card Integrated 10 Mbps or 10 100 Mbps Ethernet NIC Integrated Universal Serial Bus USB controller with two USB compliant connectors included on systems containing the 10 100 Mbps NIC Desktop chassis Thermal monitoring Main system memory consisting of 16 to 512 MB of high speed EDO DIMMs that provide ECC functionality when used with the Intel 82440FX PCIset SMART support 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 the diskette based diag
62. ure 4 22 To install the replacement microprocessor heat sink assembly ensure that the microprocessor release lever is in its fully vertical position to allow the micro processor pins to easily slip into the socket When the microprocessor heat sink assembly is in place rotate the microprocessor release lever to its horizontal position Hook the microprocessor securing clip over the socket tab nearest the front of the system board and then snap it over the tab on the back of the socket NOTE Pin I on the microprocessor is located on the corner with the largest bevel The pin 1 hole in the microprocessor socket is located on the corner where the holes are in a diagonal pattern Removing and Replacing Parts 4 21 securing clip heat sink in thermal interface pad microprocessor gt OS pin 1 corner of socket microprocessor I I I I I I I k l I I 1 I I I I I I I I I I I i i I socket i I I I I I I I PP K tab Figure 4 22 Microprocessor Removal If you are installing a new microprocessor heat sink assembly you need to place the thermal interface pad that comes with the replacement microprocessor between the microprocessor and the heat sink before reinstalling the securing clip 4 22 Dell OptiPlex GXpro Systems Service Manual Terminator or Add In Card The system unit may have a terminator card or a secondary microprocessor dual processing systems on an add i
63. with the internal visual inspection described in this section ensure that the user has saved all open files and exited all open application programs if possible A simple visual inspection of a system unit s interior hardware can often lead to the source of a problem such as a loose expansion card cable connector or mounting screw When you perform the visual inspection refer to System Features in Chapter 1 to locate components in the inspection procedure To perform the internal visual inspection follow these steps 1 Turn off the system including any attached peripherals and disconnect all the AC power cables from their power sources 2 Remove the system unit cover 3 Verify that all chips DIMMs and expansion cards are fully seated in their sockets or connectors WARNING The microprocessor can get extremely hot Be sure the chip has had sufficient time to cool before you touch it To ensure that the chips are fully seated in their sockets press firmly on the top of each chip Dell OptiPlex GXpro Systems Service Manual To reseat the microprocessor remove it from its socket and reinstall it as described in Microprocessor Heat Sink Assembly in Chapter 4 To reseat a DIMM remove it from its socket and reinstall it as described in DIMMs in Chapter 4 If you need to reseat an expansion card use a 1 4 inch nut driver to remove the screw that secures the card mounting bracket G

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