Instruction/ maintenance manual of the product 100-Mbps Dell
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Information in this document is subje ct to cha nge without notice . 1996 Dell Comput er Corp ora tio n. All rights reserve d . Reproduc tion in an y mann er whatsoeve r without the wri tten perm i s sion of Dell Co mp uter Co rpo ratio n is stri ctly forb idden .
v Contents Chapter 1 System Ov erv iew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Dual-Processor Capability . . . .
vi Chapter 2 Basic Trouble sho oting . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Initial User Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 External Visual Inspection . . . . . . . . . .
vii Terminator Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23 Add-In Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24 System Battery . . . . . . . . . . . . . . .
viii Figure 4-16. Expansion-Card Cage Removal . . . . . . . . . . . . . . . . . . . . . . 4-17 Figure 4-17. Expansion-Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18 Figure 4-18. Riser Board Removal . . . . . . . . . . . . . . .
ix.
R ead This First W arnings, Cautio ns, and N otes Throughout this manual, there may be blocks of text printed in bol d type or in italic type. These blocks are warnings, cautions, a nd notes, and they are used as follows: NO TE: A NO TE pr ovides helpful information about using the computer system.
System Overview 1-1 Chapter 1 System Overview T his service manual covers the Dell ® OptiPlex ® GX pr o high-speed, upgrad- able desktop systems, which use the Intel ® Pe ntium ® Pro family of microprocessors. These Dell systems incorporate the high-pe rformance PCI local bus as well as the ISA expansion bus.
1-2 Dell Opt iPlex GX pro System s Ser vice M anual S ystem Features In addition to the standard features found in a traditional personal computer , t he Dell OptiPlex GX pr o desktop systems include the following new and/or advanced fea tures: • Dual-processor ca pability .
System Overview 1-3 Figure 1-1. System Unit Ori entation CAUTION: T o avoid possible data or file structure corruptions, the front-panel reset button sh ould be used onl y when the system cannot be r ebooted by pressin g <Ctrl><Alt><De l>.
1-4 Dell Opt iPlex GX pro System s Ser vice M anual Figure 1-2. Front-Panel Features Figure 1-3. Internal V iew reset button hard-disk drive access indicator power button power indicator parallel port.
System Overview 1-5 Dual-Processor Capability W ith the installation of a microprocessor add-in ca rd in the terminator card slot, the system unit becomes a dual-processing system. The add-in card’ s micro- processor must have the same freque ncy and cache size as the system boar d’ s microprocessor .
1-6 Dell Opt iPlex GX pro System s Ser vice M anual Hard-Disk Drive Options The hard-disk drive bracke t 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.
System Overview 1-7 NIC GX pr o systems contain either an integrated 10-Mbps or 10/100-Mbps 3Com NIC. GX pr o systems containing the 10-Mbps Ethernet NIC have a built-in int e- grated 3Com 3C915 NIC chip. GX pr o systems containing the 10/100-Mbps Ethernet NIC have a built-in integrated 3Com 3C 916 Ethernet NIC chip.
1-8 Dell Opt iPlex GX pro System s Ser vice M anual SMART Support The system has SMAR T-compliant hard-disk drives and SMAR T support in the system BIOS, which warns you at system start-up if a hard-disk drive has become unreliable. S ystem Unit The following subsections provide servi ce-r elated information about the system unit.
System Overview 1-9 1 Pin 1 1 — PSON# should measur e between +4 and +5 VD C except when the power b utton on the fr ont panel is pr essed, taking PSON# to its active-low s tate. 2 Pin 19 — Ther mal fan-speed co ntro l (TFSC) is a pow er-supply in put signa l used to con trol power-su pply fan s peed in s pecial applicatio ns.
1-10 Dell OptiPlex G X pro System s Ser vice M anual Figure 1-7. DC Power Connector P7 DC Power Distribution Figures 1-8 and 1-9 provide the following information about DC power distribution: • Powe.
System Overview 1-1 1 Figure 1- 9. P ower Distri bution P3 +5 VDC +12 VDC –12 VDC +12 VDC +12 VDC –12 VDC 3.5-inch diskette drive system power supply PSON# +5 VFP +5 VDC –5 VDC +12 VDC –12 VDC.
1-12 Dell OptiPlex G X pro System s Ser vice M anual System Board Layout The subsections that follow provide service-related information about the sys- tem board components.
System Overview 1-13 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 ca pacity 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.
1-14 Dell OptiPlex G X pro System s Ser vice M anual I nterrupt Assignments T able 1-2. Jumper Descriptions Jumper Descripti on Default Setting PSWD Password enable/disa ble. Jumper installe d, activates password fea ture. Installed (password feature enable d) BIOS Used for internal Dell debug tool.
System Overview 1-15 D MA Channel Assi gnments IRQ8 Generated by keyboard c ontroller for each tick of R TC. IRQ9 A vailable for use by expansion card. IRQ10 A vailable for use by expansion card. IRQ1 1 A vailable for use by expansion ca rd. IRQ12 Generated by keyboard controller to indicate that mous e’ s output buf fer is full.
1-16 Dell OptiPlex G X pro System s Ser vice M anual T echnic al Specifications T able 1-5. T echnical Specif ications Microprocessor Microprocessor type . . . . . . . . Intel Pentium Pro microprocessor Microprocessor speed . . . . . . . 200 or 180 MHz First-level cache .
System Overview 1-17 Syst em Clo cks System clock . . . . . . . . . . . . . . 60 or 66 MHz (matches external processor speed) Diskette/communicatio ns ports . . . . . . . . . . . . . . . . . . . . 24 MHz from the system clock Memory Architecture . . .
1-18 Dell OptiPlex G X pro System s Ser vice M anual Ports (continued) Internally accessible: EIDE hard-disk drive . . . . two 40-pin connectors on PCI local bus Diskette drive . . . . . . . . . . 34-pin connector Vid eo V ide o type. . . . . . . . . .
System Overview 1-19 z Physica l Height . . . . . . . . . . . . . . . . . . . 16. 5 c m ( 6 . 5 in c he s) W idth . . . . . . . . . . . . . . . . . . . . 41 . 9 c m ( 1 6 . 5 in c he s) Depth . . . . . . . . . . . . . . . . . . . . 44.5 cm (17.5 inches) Environmental W eight .
1-20 Dell OptiPlex G X pro System s Ser vice M anual.
Basic T roubl eshooti ng 2-1 Chapter 2 Basic T roubleshooting T his chapter describes basic troubleshooting procedures that can help you diagnose a computer system problem. These procedure s can often reveal the source of a problem or indicate the correct starting point for troubleshooting the system.
2-2 Dell Opt iPlex GX pro System s Ser vice M anual E xternal V isual Inspection The external visual inspection co nsists of a quick inspection of the exterior of the system unit, the monitor , the ke yboard, any peripherals, and cables. While performing the visual inspection, make any necessary cor rections.
Basic T roubl eshooti ng 2-3 8. Insp ect the exterior of the system unit, includi ng all controls and indica- tors, and all user-accessible data storage devices for any signs of physical damage. Does the inspection reveal any problems? Ye s . Procee d to the appropriate procedure in Chapter 4, “Removing and Replacing Parts.
2-4 Dell Opt iPlex GX pro System s Ser vice M anual • System err or messages: These messages ca n indicate problems or pro- vide status information. If a system error message is displayed, see T able 3-2. • Beep codes: A beep code is a series of beeps that indicates an error con- dition.
Basic T roubl eshooti ng 2-5 T o reseat the microprocessor , remove it from its socket and reinstall it as described in “Microprocessor/Hea t Sink Assembly” in Chapter 4. T o reseat a DIMM, remove it from its socket and reinstall it as described in “DIMMs” in Chapter 4.
2-6 Dell Opt iPlex GX pro System s Ser vice M anual T o start the diagnostics, turn off the system uni t, 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.
Beep C odes and E rror Mes sages 3 -1 Chapter 3 Beep Codes and Error Messages T his chapter describes beep c odes and system error messages that can occur during system start-up or , in the case of some failures, during normal system operation.
3-2 Dell Opt iPlex GX pro System s Ser vice M anual 1-3-1 Main-memory refresh ver ifi- cation fa ilure Faulty or improperly seated DIMMs or defective system board 1-3-3 1-3-4 1-4-1 1-4-2 2-1-1 through.
Beep C odes and E rror Mes sages 3 -3 S ystem Error Messages T able 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 message s indicate fatal errors.
3-4 Dell Opt iPlex GX pro System s Ser vice M anual T able 3-2. System Error Messa ges 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 dri ve.
Beep C odes and E rror Mes sages 3 -5 Diskette sub- system reset failed System could not suc- cessfully issue reset command to di skette controller . Faulty diskette/tape drive controller (defec tive sys- tem board). Diskette write pro- tected Diskette wri te-pro tect feature activated.
3-6 Dell Opt iPlex GX pro System s Ser vice M anual Invalid con- figuration information - please run SETUP program System Setup program contains incorrect system configuration settings. Incorrect conf iguration settings in System S etup program or faulty battery .
Beep C odes and E rror Mes sages 3 -7 Memory address line failure at address , read value expect - ing value Memory da ta line fa ilur e at addres s , read value expecti ng value Memory do uble word l.
3-8 Dell Opt iPlex GX pro System s Ser vice M anual 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.
Beep C odes and E rror Mes sages 3 -9 Sector not found MS-DOS unable to locate sector on diskette or hard-disk drive. Defective sectors on dis- kette or hard-disk drive. Seek error MS-DOS unable to locate specific track on diskette or hard-disk drive.
3-10 Dell OptiPlex G X pro System s Ser vice M anual 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.
Removin g and Re placing Parts 4 -1 Chapter 4 Removing and Replacing Parts T his chapter provides procedures f or removing the components, assemblies, and subassemblies in the system unit. Unless otherwise noted, each procedure assumes the following: • Y ou have performed the steps in “Pr ecautionary Measures” f ound later in this chapte r .
4-2 Dell Opt iPlex GX pro System s Ser vice M anual P recautionary Me asures Before you perform any of the proce dures in this chapter , take a f ew moments to read the following war ning for your per sonal safety and to prevent damage to the computer system from ESD.
Removin g and Re placing Parts 4 -3 F loor Stand Figure 4-1. Floor Stand Removal T o remove the floor stand, follow these steps: 1. Place lef t side of the system unit on a flat work surface. 2. Unscrew the floor stand scr e w . Use your fingers or a wide flat-blade screwdriver to unscrew the floor stand screw .
4-4 Dell Opt iPlex GX pro System s Ser vice M anual S ystem Unit Cover Figure 4-2. System-U nit Cover Remov al T o remove the system unit cover , follow these steps: 1. Remove t he padlock if one is installed. Figure 4-3. Padlock R emova l 2. Press in the two securing buttons until the cover is free to swing up .
Removin g and Re placing Parts 4 -5 E ject, Power , and Reset B uttons Figure 4-4. E ject, Power , and Reset Button Remova l T o remove the eject, power , and r eset buttons, follow these steps: 1. Lay the system unit cover upside down on a flat work surface, with the back of the cover facing you.
4-6 Dell Opt iPlex GX pro System s Ser vice M anual F ront-Panel Inserts Figure 4-5. Front-Panel Insert Removal T o 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.
Removin g and Re placing Parts 4 -7 I ndicator Card Figure 4-6. Indicator Card Removal T o remove the indicator card, follow these steps: 1. Remove the hard-disk drive bracket. See “Drives” found later in this chapter . 2. Remove the spea ker conn ector from the indi cator car d.
4-8 Dell Opt iPlex GX pro System s Ser vice M anual S peaker Figure 4-7. Speaker Removal T o remove the speaker , follow these steps: 1. Re move the hard-disk drive bracket. See “Drives” found later in this chapter . 2. Remove the spea ker conn ector fr om the in dicato r car d.
Removin g and Re placing Parts 4 -9 D rives Figure 4-8 shows an example of drive ha rdware that can be installed in the sys- tem unit. Refer to this figure when you perform any of the proce dures in the following subsections.
4-10 Dell OptiPlex G X pro System s Ser vice M anual Drives in the Drive Cage Figure 4-9. 3.5-Inch Dis kette Drive R em ov a l T o remove a drive from the 3.5-inch diskette dr ive bay , follow these steps: 1. Di sconnect the DC power cable and th e interface cab le from the back of the drive.
Removin g and Re placing Parts 4-1 1 Figure 4- 10 . 5.25 -Inch Dri v e R em ov al T o remove a 5.25-inch drive from the middle or lower dr ive bay , follow these steps: 1. Discon nect the D C power cabl e and the inte rface cab le from the back of the dri ve.
4-12 Dell OptiPlex G X pro System s Ser vice M anual Hard-Disk Drives Figure 4-1 1. Hard-Di sk Drive Bracket Removal T o remove a hard-disk drive bra cket, follow these steps: 1. Disconne ct the DC power c able( s) and the int erfac e cable(s) fr om th e back of th e driv e(s) .
Removin g and Re placing Parts 4-13 Figure 4- 12 . Hard-Di sk Dri ve Remo val T o remove a hard-disk dr ive, follow these steps: 1 . R e m o v e t h e ha rd-disk drive bracket from the sy stem unit. See the preceding procedure . 2. Remove the four screws that secur e the hard-disk drive(s) to the brack et.
4-14 Dell OptiPlex G X pro System s Ser vice M anual S ystem Power Supply Figure 4-13. Power Supply Removal T o 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 power cables from the system board, drives, and expansi on cards.
Removin g and Re placing Parts 4-15 M icroprocessor Fan Figure 4-14. Microprocessor Fan Removal T o remove the system power supply , follow these steps: 1. Rotate the power su pply to the r ight to access t he microprocessor fan connector . See “ System Power Supply ,” found earlier in this chapter .
4-16 Dell OptiPlex G X pro System s Ser vice M anual S ystem Board Com ponen ts The subsections that follow contain procedures for removing system board components.
Removin g and Re placing Parts 4-17 Expa nsion Car ds The system unit has a removable expansion-card cage. The expansion cards fit into connectors on a riser board. Dell rec ommends that you remove the expansion-card cage first before removing or installing expansion cards.
4-18 Dell OptiPlex G X pro System s Ser vice M anual Expansion Card Figure 4-17. Expansion-Card Removal T o remove an expansion car d, follow these steps: 1. Re move the expansion-card cage. See the preceding proce dure. 2. Re move the retaining scr e w from the card-mounting bracket.
Removin g and Re placing Parts 4-19 Riser Board Figure 4-18. Riser Board Removal T o remove the riser board, follow thes e steps: 1. Remove the expansion-car d cage and all expansion cards. See the preceding two procedure s. 2. On a flat work surfac e, turn the expansion-card cage over , with the riser board facing you.
4-20 Dell OptiPlex G X pro System s Ser vice M anual DIMMs Figure 4-19 . DIMM Remov al T o remove a DIMM , push outward on the DIMM socket ’ s securing clips until the DIMM is relea sed from its socket. Then lift t he DIMM away from the socket. Figure 4-20.
Removin g and Re placing Parts 4-21 Microprocessor/Heat Sink Assembly Figure 4-21. Microprocessor Securing Clip T o remove the microproce ssor/heat sink assembly , follow these steps: 1. Remove the micropr ocessor securing clip fr om the micropr ocessor/heat sink assemb ly .
4-22 Dell OptiPlex G X pro System s Ser vice M anual Figure 4-22 . Microprocessor Removal If you ar e installing a new micr opr ocessor/heat sink assembly , you need to place the thermal inte rface pad that comes with the repla cement microprocessor between the microprocessor and the hea t sink before reinstalling the securing clip.
Removin g and Re placing Parts 4-23 T erminator or Add-In Card The system unit may have a terminator card or a se condary microproce ssor (dual-processing systems) on an add-in card installed on the syst em board. This section describes removing and replacing the ter minator card and the add-in card.
4-24 Dell OptiPlex G X pro System s Ser vice M anual Add-In Card Figure 4-24. Add-In Card R e m o v a l T o remove an add-in car d, follow these steps: 1. Gently grip the card’s metal mounting bracket with both han ds. 2. Pull up until the card is freed from the connector .
Removin g and Re placing Parts 4-25 System Battery Figure 4- 25 . Syste m Batter y Remov al T o remove the system battery , follow these steps: 1. If possible, enter the System Setup program, and make a printed copy of the System Set up screens. 2. Rotate the power supply out of the way .
4-26 Dell OptiPlex G X pro System s Ser vice M anual S ystem Board Figure 4-26 . System B oard Remova l T o remove the system board, follow these steps: 1. Disconnect all cables from their connectors at the back of the system unit. 2. Re move the expansion-card cage.
Syste m Setup P rogram A-1 Appendix A System Setup Program T his appendix describes the System Setup program, which is used to change the system configuration information stored in NVRAM on the system board. T o enter the System Setup program, follow these steps: 1.
A-2 Dell Opt iPlex GX pro System s Ser vice M anual S ystem Setup Screens Figure A-1. System Setup Screens Drives: Primary Type Cyls Hds Pre LZ Sec Size Drive 0: Auto 524 32 -1 524 63 540 Drive 1: Non.
Syste m Setup P rogram A-3 T able A-1. System Setup Categories Category Function T ime Resets time on s y s t e m ’ s i n t e r n a l c l o c k . Date Resets date on system’ s interna l calendar . D iskette Drive A Diskette Drive B Identifies type of diskette drives installed.
A-4 Dell Opt iPlex GX pro System s Ser vice M anual 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 require s special addres sing is installed.
Syste m Setup P rogram A-5 Power Management W ith the Power Management c a t e g o r y enabled, DPMS m onitors and most E IDE drives aut omatically s witch into low -power mode during pe riods of s ystem inac tivit y . CAUTI ON: Befor e enabling this fea tur e, check the monitor docume ntation to make sur e the system has a DPMS-compliant monitor .
A-6 Dell Opt iPlex GX pro System s Ser vice M anual 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.
Index 1 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 illustrated , 4-25 removing and replacing , 4-.
2 Dell Opt iPlex G X pro System s Ser vice M anual 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 eje.
Index 3 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 le ver , 4-21 removal ,.
4 Dell Opt iPlex G X pro System s Ser vice M anual subsystems advanced expansion , 1-5 enhanced dual-interfac e EIDE , 1- 6 mai n me mor y , 1-13 video memory , 1-12 switch, voltage selection , 1-4 sy.
An important point after buying a device Dell 100-Mbps (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Dell 100-Mbps yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Dell 100-Mbps - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Dell 100-Mbps you will learn all the available features of the product, as well as information on its operation. The information that you get Dell 100-Mbps will certainly help you make a decision on the purchase.
If you already are a holder of Dell 100-Mbps, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Dell 100-Mbps.
However, one of the most important roles played by the user manual is to help in solving problems with Dell 100-Mbps. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Dell 100-Mbps along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
