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____________________ Information in this document is subject to change without notice. © 1996¤1998 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 and MMX is a trademark of Intel Corporation; Microsoft, Windows, a
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&RQWHQWV &KDSWHU 6\VWHP2YHUYLHZ Chassis Differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Chassis Similarities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Pentium II Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . .
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System-Board Service Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 System Board Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 Interrupt Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 DMA Channel Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 Hard-Disk Drive Service Informat
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Inside the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Computer Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Eject, Power, and Reset Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Front-Panel Inserts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Expansion Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15 Expansion-Card Cage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15 Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 Riser Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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&KDSWHU 5HPRYLQJDQG5HSODFLQJ3DUWVRQWKH 2SWL3OH[1;1HW3&&KDVVLV Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Inside the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Optional Stand . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Figure 1-15. Computer Orientation Information . . . . . . . . . . . . . . . . . . . 1-23 Figure 1-16. DC Power Connector P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 Figure 1-17. DC Power Connectors P2 (Midsize and Mini Tower Chassis); P3, P4, P5, P6, and P9 (All OptiPlex GX1/GX1p Chassis). . . . . . . . . . . . . . . . . . . . . 1-26 Figure 1-18. DC Power Connectors P2 (Low-Profile Chassis) and P7 (All OptiPlex GX1/GX1p Chassis). . . . . . . . . . . . . . . 1-26 Figure 1-19.
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Figure 5-2. Optional-Stand Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Figure 5-3. Computer Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Figure 5-4. Eject, Power, and Reset Button Removal . . . . . . . . . . . . . . . 5-6 Figure 5-5. Front-Panel Insert Removal . . . . . . . . . . . . . . . . . . . . . . . . . 5-7 Figure 5-6. Control Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 Figure 5-7. Drive Hardware . . . . . .
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Figure 6-22. Installing a Video-Memory Upgrade Module. . . . . . . . . . . . 6-22 Figure 6-23. SEC Cartridge/Heat Sink Removal . . . . . . . . . . . . . . . . . . . 6-23 Figure 6-24. System Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . . 6-24 Figure 7-1. Internal View of the OptiPlex NX1 Computer . . . . . . . . . . . . 7-3 Figure 7-2. Optional-Stand Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 Figure 7-3. Computer Cover Removal. . . . . . . . . . .
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5HDG7KLV)LUVW A prerequisite for using this manual to service Dell computer systems is a basic ® knowledge of IBM -compatible PCs and prior training 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 procedures and instructions on using the Dell diagnostics to test the computer system. :DUQLQJV&DXWLRQVDQG1RWHV Th
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&+$37(5 6\VWHP2YHUYLHZ ® ® This manual contains field-servicing information for the Dell OptiPlex GX1/ GX1p Managed PC and OptiPlex NX1 Net PC family of computers. The Dell Opti- Plex GX1/GX1p and OptiPlex NX1 systems are high-speed (266-, 333-, 350-, 400- or 450-MHz), upgradable desktop computers built around high-performance ® ® ™ Intel Pentium II microprocessors with MMX technology. The OptiPlex GX1p systems are available only with 400-MHz or 450-MHz processors. The OptiPlex GX1/GX1p an
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Low-Profile Chassis Midsize Chassis Mini Tower Chassis OptiPlex NX1 Chassis )LJXUH&KDVVLV&RQILJXUDWLRQV &KDVVLV'LIIHUHQFHV The four different chassis configurations differ primarily in the following expan- sion features: Number of expansion slots available for PCI/ISA expansion cards Number of available internal drive bays for EIDE/SCSI drives Number of available external drive bays for diskette, CD-ROM, or tape drives Physical size and power supply types (the midsize and mini
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&KDVVLV6LPLODULWLHV All four chassis configurations have the following similarities: The same system board. Identical operational characteristics (same BIOS, POST, memory, microprocessor, external I/O ports, and so on). Identical diagnostics, diagnostic beep codes, and diagnostic-screen error messages (see Chapters 1 through 3 and Appendix A). However, the OptiPlex NX1 computer has no built-in diskette drive and requires a special setup process to run the diskette-based diagnostics a
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0DLQ0HPRU\ Main memory for the OptiPlex GX1 and OptiPlex NX1 systems ranges from a minimum of 32 MB to a maximum of 384 MB. Main memory for the OptiPlex GX1p system ranges from a minimum of 128 MB to a maximum of 384 MB. All main memory for the OptiPlex GX1 and OptiPlex NX1 systems is implemented using high-speed error checking and correction (ECC) and non-ECC DIMMs. All main memory for the OptiPlex GX1p system is implemented using high-speed ECC DIMMs. One to three DIMMs, ranging in memo
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,QWHJUDWHG'LVNHWWH7DSH'ULYH&RQWUROOHU The OptiPlex GX1/GX1p and OptiPlex NX1 systems are equipped with an inte- grated diskette drive controller (PIIX4e) that can support a maximum of two non-EIDE diskette and tape drives via a 34-pin DSKT connector located on the system board. The low-profile chassis can accommodate only one external drive device (diskette drive or tape drive). Other chassis configurations can accommodate two external drive devices. NOTES: If the diskette drive and tape
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$7,0XOWLPHGLD&KDQQHO The ATI multimedia channel (AMC) implements a local graphics bus that allows external devices to attach directly to the graphics controller. The AMC allows devices to transfer video stream data to the graphics controller, for example, MPEG-2 decoding for digital video disk (DVD) applications, or to receive video stream data from the graphics controller to the device, for example, TV-Out circuitry, or to do both simultaneously. Most of the video stream data trans- fer
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,QWHJUDWHG(WKHUQHW1,&6XSSRUW 2SWLRQDO The OptiPlex GX1 systems and OptiPlex NX1 systems are available with or without an integrated Ethernet NIC subsystem. The OptiPlex GX1p systems are available only with an integrated Ethernet NIC subsystem. ® The integrated 10/100-Mbps 3Com PCI 3C905B-TX Ethernet NIC subsystem supports the Wakeup On LAN feature and the 10BASE-T and 100BASE-T stan- dards. The NIC subsystem connects to the Ethernet network through a single RJ45 connector on the back o
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3RZHU6XSSO\ The OptiPlex GX1/GX1p and OptiPlex NX1 systems are equipped with a switch-selectable (115/230-VAC) power supply that can operate from standard AC power outlets in the U.S. and all international countries. The power supply used in the midsize and mini tower chassis configurations is a higher-capacity power supply than that used in the low-profile and OptiPlex NX1 chassis configurations. Dell OptiPlex GX1/GX1p and OptiPlex NX1 systems have a special power sup- ply that provides
