Dell OptiPlex NX Service Manual

Dell OptiPlex NX Manual

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  • Dell OptiPlex NX | Service Manual - Page 1
    'HOOŠ2SWL3OH[Š*;DDQG2SWL3OH[1;6\VWHPV 6(59,&(0$18$/ ®
  • Dell OptiPlex NX | Service Manual - Page 2
    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, and MS-DOS are registered trademarks of Microsoft Corporation; IBM is a registered trademark of International
  • Dell OptiPlex NX | Service Manual - Page 3
    Built-In Audio Controller 1-5 Built-In Ethernet NIC Support (Optional on EM System Board 1-5 Network Cable Requirements 1-6 Full Set of I/O Ports 1-6 Universal Power Supply 1-7 Location of Major Components 1-7 Advanced Expansion Features 1-11 OptiPlex NX Computer's Expansion-Card Slot 1-12
  • Dell OptiPlex NX | Service Manual - Page 4
    1-32 OptiPlex NX Pin Assignments for the DC Power Connectors . . . . 1-33 DC Power Distribution for the OptiPlex NX 1-34 Technical Specifications 1-36 Chapter 2 Basic Troubleshooting 2-1 Initial User Contact 2-1 External Visual Inspection 2-2 Observing the Boot Routine 2-3 Internal Visual
  • Dell OptiPlex NX | Service Manual - Page 5
    Reset Buttons 4-5 Front-Panel Inserts 4-6 Control Panel 4-7 Drives 4-8 3.5-Inch Diskette Drive Assembly 4-9 5.25-Inch Drive Assembly 4-10 Hard-Disk Drive Assembly 4-11 System Power Supply 4-12 Expansion Cards 4-13 Expansion-Card Cage 4-13 Expansion Card 4-14 Riser Board 4-15 System Board
  • Dell OptiPlex NX | Service Manual - Page 6
    5-7 Control Panel 5-8 Drives 5-9 Externally Accessible Drive Assemblies 5-10 3.5-Inch Diskette Drive Assembly 5-10 5.25-Inch Drive Assembly 5-11 Hard-Disk Drive Bracket 5-12 Hard-Disk Drive 5-13 System Power Supply 5-14 Expansion Cards 5-15 Expansion-Card Cage 5-15 Expansion Card 5-16
  • Dell OptiPlex NX | Service Manual - Page 7
    Measures 7-2 Stand for Vertical Orientation 7-2 Computer Cover 7-3 Control Panel 7-5 Hard-Disk Drive 7-6 System Power Supply 7-7 System Board Components 7-8 Expansion-Card Cage 7-8 Expansion Card 7-10 Riser Board 7-11 DIMMs 7-12 Video Memory 7-12 Microprocessor 7-14 SEC Cartridge/Heat
  • Dell OptiPlex NX | Service Manual - Page 8
    ); P3, P4, P5, P6, and P9 (All OptiPlex GXa Chassis 1-25 Figure 1-20. DC Power Connectors P2 (Low-Profile Chassis) and P7 (All OptiPlex GXa Chassis 1-26 Figure 1-21. DC Power Cables for the Low-Profile Computer 1-27 Figure 1-22. DC Power Distribution for the Low-Profile Computer . . . . . 1-28
  • Dell OptiPlex NX | Service Manual - Page 9
    Connector P3 for the OptiPlex NX 1-34 Figure 1-29. DC Power Cables for the OptiPlex NX Computer 1-34 Figure 1-30. DC Power Distribution for the OptiPlex NX Computer . . . . 1-35 Figure 2-1. Connecting an External Diskette Drive to the NX Computer 2-9 Figure 4-1. Internal View of the Low-Profile
  • Dell OptiPlex NX | Service Manual - Page 10
    6-12 Figure 6-11. 5.25-Inch Drive Assembly Removal 6-13 Figure 6-12. 5.25-Inch Drive Removal 6-14 Figure 6-13. Hard-Disk Drive Bracket Removal 6-15 Figure 6-14. Hard-Disk Drive Removal 6-16 Figure 6-15. System Power-Supply Removal 6-17 Figure 6-16. Expansion-Card Cage Removal 6-18 Figure 6-17
  • Dell OptiPlex NX | Service Manual - Page 11
    Figure 7-3. Service Access Lock 7-4 Figure 7-4. Control Panel Removal 7-5 Figure 7-5. Hard-Disk Drive Removal 7-6 Figure 7-6. System Power-Supply Removal 7-7 Figure 7-7. System Board Components 7-8 Figure 7-8. Expansion-Card Cage Removal 7-9 Figure 7-9. Expansion-Card Removal 7-10 Figure 7-10
  • Dell OptiPlex NX | Service Manual - Page 12
    techniques. In addition to information provided in this manual and the online System User's Guide, Dell provides the Diagnostics and Troubleshooting Guide for troubleshooting procedures and instructions on using the Dell Diagnostics to test the computer system. Warnings, Cautions, and
  • Dell OptiPlex NX | Service Manual - Page 13
    NIC controller and support for an optional Network Interface Card with Wakeup On LAN capability. All OptiPlex NX systems use the EM system board. Enhanced manageability systems are identified by the phrase "Enhanced Manageability," which is printed on the computer's FCC label and also displayed
  • Dell OptiPlex NX | Service Manual - Page 14
    in the following expansion 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
  • Dell OptiPlex NX | Service Manual - Page 15
    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 NX computer has no built-in diskette drive and requires
  • Dell OptiPlex NX | Service Manual - Page 16
    used for diskette drives, CD-ROM drives, and/or tape drives. Hard-disk drives should be installed in the internal hard-disk drive positions described in "Hard-Disk Drive Service Information" found later in this chapter. The OptiPlex NX system supports only one hard-disk drive and optionally one
  • Dell OptiPlex NX | Service Manual - Page 17
    line-level input to an external amplifier or drives stereo headphones. See "Technical Specifications" found later in this chapter for audio jack input and output specifications. Built-In Ethernet NIC Support (Optional on EM System Board) The OptiPlex GXa systems and Optiplex NX systems are available
  • Dell OptiPlex NX | Service Manual - Page 18
    ports (mouse and keyboard) • One 15-hole video connector • Three audio jacks (microphone, line-in, and line-out) • One RJ45 Ethernet NIC connector See Figures 1-3 through 1-5 for I/O port identifiers for the various chassis configurations. 1-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 19
    all OptiPlex NX systems have a special power supply that provides trickle ("flea") power to support the Wakeup On LAN feature when computer power is off. Location of Major Components Figure 1-2 shows the front-panel features for the four chassis types; Figures 1-3 through 1-5 show internal features
  • Dell OptiPlex NX | Service Manual - Page 20
    -drive access indicator power button reset button power indicator hard-disk drive access indicator Mini Tower Chassis Net PC Chassis Figure 1-2. Front-Panel Features power button power indicator hard-disk drive access indicator 1-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 21
    mouse connector keyboard connector USB connectors (2) serial port 2 connector video connector NIC connector (optional) Figure 1-4. Internal View of the Midsize Chassis drive cage hard-disk drive bracket hard-disk drive interface cable expansion-card cage expansion-card slots (5) audio
  • Dell OptiPlex NX | Service Manual - Page 22
    drive bracket keyboard connector mouse connector USB connectors serial port 2 connector video connector NIC connector (optional) audio connectors (3) padlock ring interface cable expansion-card cage system board riser board Figure 1-5. Internal View of the Mini Tower Chassis 1-10 Dell OptiPlex
  • Dell OptiPlex NX | Service Manual - Page 23
    mouse connector keyboard connector USB connectors (2) serial port 2 connector video connector NIC connector (optional) Figure 1-6. Internal View of the Net PC Chassis expansion-card cage expansion-card slot AC power receptacle Advanced Expansion Features The OptiPlex GXa systems contain
  • Dell OptiPlex NX | Service Manual - Page 24
    Figure 1-8). If the LED is on, the riser is receiving power; if off, the riser is not receiving power. HDLED connector ISA2 connector ISA1 connector PCI2 connector PCI1 connector Figure 1-8. Riser Board for the Low-Profile Computer 1-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 25
    connector PCI2 connector PCI1 connector Figure 1-9. EM Riser Board for the Low-Profile Computer Midsize Computer's Expansion-Card Slots The OptiPlex GXa midsize computers have five expansion-card slots. The riser board is offered in two options. Option 1 is a passive riser board, with no PCIto
  • Dell OptiPlex NX | Service Manual - Page 26
    -card connectors. Two PCI expansion-card connectors share expansion-card slots with two ISA connectors, resulting in a total of seven expansion-card slots (see Figure 1-13). The riser board is active, incorporating PCI-to-PCI bridging. 1-14 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 27
    minitower computer, the riser board includes the P1 connector (for connecting the NIC to the riser cable) and an LED (see Figure 1-14). If the LED is on, the riser is receiving power; if off, the riser is not receiving power. LED PCI5 PCI4 PCI3 PCI2 PCI1 ISA4 ISA3 ISA2 ISA1 P1 HDLED
  • Dell OptiPlex NX | Service Manual - Page 28
    GXa and OptiPlex NX systems equipped with the enhanced manageability system board and power supply and an optional Wakeup On LAN-capable network card, the following tasks may be performed by a system administrator at a remote location. 1-16 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 29
    EM systems also contain an online Network Administrator's Guide. System Diagnostics Server-based and diskette-based diagnostics are available to aid in troubleshooting all major components of the three Dell OptiPlex GXa chassis (server-based diagnostics are available only for those systems equipped
  • Dell OptiPlex NX | Service Manual - Page 30
    (POWER_2) battery socket (BATTERY) system board jumpers primary EIDE interface connector (IDE1) diskette/tape drive interface connector (DSKT) front of computer control panel connector (PANEL) Figure 1-15. System Board Components 1-18 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 31
    System Board Jumpers Figure 1-16. System Board Jumpers System Overview 1-19
  • Dell OptiPlex NX | Service Manual - Page 32
    service. IRQ7 Generated by super I/O controller to indicate that device connected to parallel port requires service. NOTE: IRQ3 is available provided that no other device in the computer (such as a modem) is using COM2 or COM4. 1-20 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 33
    drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA controller DREQ5 Available DREQ6 Available DREQ7 Available NOTE: The built-in audio controller, NIC (optional), and video controllers are assigned available DMA channels automatically during system start
  • Dell OptiPlex NX | Service Manual - Page 34
    side front Midsize Computer bottom Mini Tower Computer Figure 1-17. Computer Orientation Information Hard-Disk Drive for the Net PC Computer One 1-inch-high EIDE hard-disk drive can be mounted to the top of the expansion-card cage. 1-22 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 35
    bays at the front of the computer. The hard-disk drive bracket can contain either one or two 1-inch-high EIDE or SCSI hard-disk drives, or one 1-inch-high EIDE or SCSI hard-disk drive and one 1.6-inch-high EIDE or SCSI hard-disk drive. Power-Supply Service Data The low-profile computers have a 145
  • Dell OptiPlex NX | Service Manual - Page 36
    should not exceed 105 W on the low-profile computers or 140 W on the midsize/mini tower computers. 2 Withstands surges of up to 11.0 A to support disk start-up operations. 3 VFP (volts flea power) - sometimes called "standby power." 1-24 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 37
    DC Power Connectors The power-supply output voltages can be measured at the back (wire side) of the connectors without disconnecting them. control (TFSC) is a power-supply input signal used to control the power-supply fan speed. 3 Pin 5 - PWRGOOD should measure between +4 and +5 VDC when the power
  • Dell OptiPlex NX | Service Manual - Page 38
    the following information about DC power distribution: • Power-supply connector identification • Power cable connections for diskette, tape, CD-ROM, and hard-disk drives • Power distribution to sockets and connectors on the system board 1-26 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 39
    P1 P2 P4 P3 P5 Figure 1-21. DC Power Cables for the Low-Profile Computer System Overview 1-27
  • Dell OptiPlex NX | Service Manual - Page 40
    ) ISA1 ISA2 optional P3 drive P4 3.5-inch diskette P5 internal hard-disk drive +12 VDC FAN main memory NIC logic on the system board and to P1 on the riser board. Figure 1-22. DC Power Distribution for the Low-Profile Computer 1-28 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 41
    P6 P4 P5 P9 P3 P2 P1 P7 Figure 1-23. DC Power Cables for the Midsize and Mini Tower Computers System Overview 1-29
  • Dell OptiPlex NX | Service Manual - Page 42
    routed to the integrated NIC logic on the system board and to P1 on the riser board. * Some computers have an additional connector (P9) that may be used instead of P5 or P6. Figure 1-24. DC Power Distribution for the Midsize Computer 1-30 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 43
    battery power management and NIC logic POWER1 RTC/ NVRAM PSON# +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC POWER2 +5 VDC -5 VDC +12 VDC -12 VDC RISER riser board +3.3 VDC +5 VDC +12 VDC -12 VDC +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC PCI1 through PCI5 P1 ISA1 through ISA4 internal P2 hard-disk drive
  • Dell OptiPlex NX | Service Manual - Page 44
    75 to +5.25 VDC 1.2 A 1 The combined load on the +5-VDC and +3.3-VDC outputs should not exceed 65 W. 2 Withstands surges of up to 3.0 A to support disk start-up operations. 3 VFP (volts flea power) - sometimes called "standby power." 1-32 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 45
    input signal used to control the power-supply fan speed. 3 Pin 5 - PWRGOOD should measure between +4 and +5 VDC when the power supply is on to indicate that all power-supply output voltages are within the ranges specified in Table 1-5. Figure 1-26. DC Power Connector P1 for the OptiPlex NX P2
  • Dell OptiPlex NX | Service Manual - Page 46
    : • Power-supply connector identification • Power cable connection for the hard-disk drive • Power distribution to sockets and connectors on the system board P3 P2 P1 Figure 1-29. DC Power Cables for the OptiPlex NX Computer 1-34 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 47
    / and NIC logic NVRAM battery computer power supply P1 PWRGOOD PSON# +5 VFP POWER_1 PSON# +5 VFP +5 VDC +12 VDC -12 VDC +5 VDC +12 VDC -12 VDC P2 POWER_2 +3.3 VDC +3.3 VDC +5 VDC +12 VDC -12 VDC RISER +3.3 VDC +5 VDC +12 VDC -12 VDC riser board P1 PCI1 internal P3 hard-disk drive +12
  • Dell OptiPlex NX | Service Manual - Page 48
    . . . . . three (one PCI connector and one ISA connector share an expansion-card slot) or five (two share expansion-card slots) Mini tower computers. . . . five (two PCI connectors share expansioncard slots with ISA connectors) 1-36 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 49
    or two (both share expansion-card slots) Mini tower computers . . . . four (two ISA connectors share expansioncard slots with PCI connectors) NIC NIC integrated (on standard system board) or optional on enhanced manageability system board; 3Com PCI 3C905 network controller, operating at 10 or
  • Dell OptiPlex NX | Service Manual - Page 50
    inch-high EIDE or SCSI harddisk drive Video Video type ATI 3D Rage Pro built-in SVGA controller attached to the AGP bus Video memory 2-MB SGRAM, upgradable to 4 MB Maximum video resolution . . . 1600 x 1200 pixels, with 256 colors 1-38 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 51
    ) Parallel one 25-hole connector (bidirectional) Video one 15-hole connector PS/2-style keyboard . . . . 6-pin mini-DIN PS/2-compatible mouse 6-pin mini-DIN NIC RJ45 connector (optional on enhanced manageability OptiPlex Gxa systems and all OptiPlex NX systems) USB two USB-compliant connectors
  • Dell OptiPlex NX | Service Manual - Page 52
    -profile computers . . . 808 BTU (nominal) Midsize computers . . . . . 913 BTU (nominal) Mini tower computers. . . . 913 BTU (nominal) Power supply voltage 90 to 135 V at 60 Hz; 180 to 265 V at 50 Hz Backup battery 3-V CR2032 coin cell 1-40 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 53
    Table 1-6. Technical Specifications (continued) Physical Net PC computers Height 9.27 cm (3.65 inches) Width 33.71 cm (13.27 inches) Depth 34.93 cm (13.75 inches) Weight 5.9 kg (13.0 lb) Low-profile computers: Height 10.9 cm (4.3 inches) Width 40.89 cm (16.1 inches) Depth 43.69 cm (17.2
  • Dell OptiPlex NX | Service Manual - Page 54
    ) * The maximum operating temperature of 35°C (95°F) is for altitudes below 914.6 m (3000 ft). Above 914.6 m (3000 ft) the maximum operating temperature is reduced. 1-42 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 55
    systems of the Dell OptiPlex GXa and OptiPlex NX families. A brief explanation of how to load and start diagnostics is also provided at the end of the chapter. Dell recommends that you perform the following procedures in the order they are presented in this manual. Chapter 3, "Beep Codes and Error
  • Dell OptiPlex NX | Service Manual - Page 56
    connector on the device. The captive video monitor controls, see the documentation for the monitor. 7. Inspect the keyboard to ensure that no keys are sticking. If one or more keys are sticking, it may be necessary to replace the keyboard. 2-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 57
    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 10 seconds after the boot routine starts? Yes. Proceed to step 4. No. Troubleshoot the system power supply. If the
  • Dell OptiPlex NX | Service Manual - Page 58
    during the boot routine, troubleshoot the diskette drive or hard-disk drive subsystem, as appropriate. • System error messages: These messages can indicate problems or pro- vide status information. If a system error message is displayed, see Table 3-2. • Beep codes: A beep code is a series of beeps
  • Dell OptiPlex NX | Service Manual - Page 59
    and expansion cards are fully seated . If you need to reseat an expansion card, remove it from its connector and reinstall it as described in "Expansion Cards" in Chapter 4, 5, 6, or 7, and any attached peripherals to their power sources, and turn them on. Does the problem appear to be resolved? Yes.
  • Dell OptiPlex NX | Service Manual - Page 60
    from the network. Highlight the Boot Sequence field (see Figure A-1). Either press to restore the default settings, or press and the right-arrow key to display the Device List screen (see Figure A-2). Then move the LANDesk Service Agent above drive C: on the Boot Device Priority list
  • Dell OptiPlex NX | Service Manual - Page 61
    the keyboard and the key- board controller chip • Disk 0 Tests - Check the hard-disk drive controller and the storage capa- bility of the hard-disk drive For a complete description of the server-based diagnostics, see "Server-Based Diagnostics" in the online Network Administrator's Guide. Hard-Disk
  • Dell OptiPlex NX | Service Manual - Page 62
    - board controller chip • Mouse Test - Checks the functionality of the mouse controller and the operation of the mouse keys • Hard-Disk Drive Tests - Check the hard-disk drive controller and the stor- age capability of the hard-disk drive 2-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 63
    copies of the original diskette to ensure that one is always available. Connecting an External Diskette Drive to the NX Computer hard-disk drive external diskette drive Y-cable P3 interface cable Figure 2-1. Connecting an External Diskette Drive to the NX Computer Basic Troubleshooting 2-9
  • Dell OptiPlex NX | Service Manual - Page 64
    Diagnostics (All System Boards)" found earlier in this chapter. For a complete description of the diskette-based diagnostics, see "Diskette-Based Diagnostics" in the online Network Administrator's Guide or online System User's Guide. 2-10 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 65
    -based, hard-disk-based, or diskette-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 "Contacting Dell" in the online Network Administrator's Guide or
  • Dell OptiPlex NX | Service Manual - Page 66
    2-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 67
    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 generated during the POST. Most beep
  • Dell OptiPlex NX | Service Manual - Page 68
    Beep Codes Beep Code Error Probable Causes 1-1-3 NVRAM write/read failure Defective system board 1-1-4 BIOS checksum failure Faulty BIOS or Keyboard-controller test failure Faulty keyboard controller (defective system board) 3-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 69
    board System Error Messages System error messages typically are presented on the screen during the POST but can occur any time an error is detected by the system. System messages are very useful in troubleshooting the system. Some of these messages require operator intervention to solve; others
  • Dell OptiPlex NX | Service Manual - Page 70
    , incorrect configuration settings in System Setup program, loose diskette/ tape drive interface cable, or loose power cable. Faulty diskette, faulty or improperly connected diskette/tape drive interface cable, or loose power cable. 3-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 71
    keyboard controller malfunctioned. Faulty keyboard controller (defective system board). General failure Operating system cannot execute command. Operating system corrupted or not installed properly. Hard disk controller failure Hard disk drive read failure Hard disk failure Hard-disk drive
  • Dell OptiPlex NX | Service Manual - Page 72
    Keyboard data line failure Keyboard stuck key failure System cannot communicate with keyboard. Keyboard cable connector loose or improperly connected, defective keyboard, or defective keyboard/mouse controller by pressing . 3-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 73
    Causes No boot device available System does not recognize 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 sector on hard-disk drive Configuration
  • Dell OptiPlex NX | Service Manual - Page 74
    seated. Improperly seated DIMMs or faulty keyboard/mouse controller chip (defective system board). Write fault Write fault on selected drive MS-DOS cannot write to diskette or hard-disk drive. Faulty diskette or harddisk drive. 3-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 75
    the components, assemblies, and subassemblies in the Dell OptiPlex GXa low-profile computer. If you are servicing a midsize, mini tower, or Net PC assumes the following: • You have performed the steps in "Precautionary Measures" found later in this chapter. • You have removed the computer cover. •
  • Dell OptiPlex NX | Service Manual - Page 76
    touch an unpainted metal surface on the back of the computer to discharge any static charge from your body. Avoid touching components and contacts on a card, and avoid touching pins on a chip to prevent static electricity damage. 4-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 77
    component removal/replacement procedures in this chapter. CD-ROM drive in external bay diskette drive drive cage for external drive power supply internal harddisk drive system board back expansion-card cage Figure 4-1. Internal View of the Low-Profile Computer Removing and Replacing Parts
  • Dell OptiPlex NX | Service Manual - Page 78
    Removal To remove the computer cover, follow these steps: 1. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 2. Remove the padlock if one is installed or with proper airflow inside the computer. 4-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 79
    cover (upside down) eject button reset button power button Figure 4-3. Eject, Power, and Reset Button Removal 1. Lay the computer cover upside down on a flat work surface, with the back of the cover facing you. 2. To remove the 3.5-inch diskette-drive eject button, pull gently on the plastic
  • Dell OptiPlex NX | Service Manual - Page 80
    remove a front-panel insert, follow these steps: 1. Lay the computer cover upside down on a flat work surface, with the front of the cover facing you. 2. From the front of the cover, use your inch nutdriver to help push on the ring-tabs. 4-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 81
    Panel mounting screw chassis control panel cable control panel mounting tab Figure 4-5. Control Panel Removal To remove the control panel, follow these steps: 1. Disconnect the control panel cable from the PANEL connector on the system board (see Figure 4-15). 2. From the inside of the chassis
  • Dell OptiPlex NX | Service Manual - Page 82
    diskette drive DC power cable power supply 5.25-inch drive bay and bracket hard-disk drive back DSKT connector Figure 4-6. Drive Hardware secondary EIDE interface connector (IDE2) EIDE cable primary EIDE interface connector (IDE1) 4-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 83
    -mounting screws (2) 3.5-inch diskettedrive-assembly latches (2) front of computer Figure 4-7. 3.5-Inch Diskette Drive Removal hooks (2) To remove the 3.5-inch diskette drive assembly, follow these steps: 1. Disconnect the DC power cable and the interface cable from the back of the diskette
  • Dell OptiPlex NX | Service Manual - Page 84
    , and tighten the screws in the order stamped on the bottom of the bracket. Check the alignment of the computer cover around the 5.25-inch drive bezel. Adjust the drive forward or backward on the bracket to align it. 4-10 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 85
    Assembly Removal To remove the hard-disk drive, follow these steps: 1. Disconnect the DC power cable and the interface cable from the back of the drive. 2. Loosen the captive screw that secures the hard-disk drive bracket to the chassis. 3. Pivot the hard-disk drive assembly up and lift it out
  • Dell OptiPlex NX | Service Manual - Page 86
    the correct operating voltage (115 V or 230 V) before the power cable is plugged into an AC outlet. NOTE: When replacing the power supply on an enhanced manageability system, ensure that the replacement power supply is an EM power supply. 4-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 87
    has a removable expansion-card cage. The expansion-card cage contains the riser board and any installed expansion cards. Dell recommends that you remove the expansion-card cage first before removing or installing expansion cards. If you are not removing any of the expansion cards, leave the external
  • Dell OptiPlex NX | Service Manual - Page 88
    the expansion card being removed. 2. Remove the expansion-card cage. 3. Remove the retaining screw from the card-mounting bracket. 4. Grasp the expansion card by its corners, and carefully remove it from the expansion-card connector. 4-14 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 89
    cage Figure 4-13. Riser Board Removal To remove the riser board, follow these steps: 1. Remove the expansion-card cage and all expansion cards. 2. Lay the expansion-card cage on a flat work surface, with the riser board facing up. 3. Remove the two riser-board mounting screws. 4. Lift the riser
  • Dell OptiPlex NX | Service Manual - Page 90
    1. Disconnect all cables from their connectors at the back of the computer. 2. Remove the expansion-card cage. 3. Disconnect all ) cartridge/ heat sink assembly, and the guide bracket assembly from the old system board and install them on Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 91
    connector (MONITOR) USB connectors (USB) optional NIC connector (ENET) video-memory upgrade socket (VIDEO_UPGRADE) CD-ROM audio interface connector (CD_IN) riser board connector (RISER) secondary EIDE interface connector (IDE2) keyboard/mouse connectors (stacked) (KYBD/MOUSE) parallel/serial
  • Dell OptiPlex NX | Service Manual - Page 92
    a video-memory upgrade module in the video-memory upgrade socket on the system board. Adding additional video memory increases the system's video performance and provides additional modes for high-resolution/expanded color applications. 4-18 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 93
    2 and 3. 4. Replace the expansion-card cage. 5. Replace the computer cover, and reconnect the AC power cable to the AC outlet. Press the power switch on the computer to reboot the system. NOTE: As the system boots, it automatically detects the presence of the new video-memory upgrade module and
  • Dell OptiPlex NX | Service Manual - Page 94
    can replace the microprocessor on your system board with any Dell-supported microprocessor upgrade. The microprocessor upgrade kit is shipped with guide bracket assembly metal standoffs (2) Figure 4-19. SEC Cartridge/Heat Sink Removal 4-20 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 95
    Remove the system power supply. WARNING SEC cartridge/heat sink assembly. 3. Disconnect the microprocessor fan connector from the located between the SERIAL2 connector and the MONITOR connector (see Figure 4-15). 4. Release /heat sink assembly out of its guide bracket assembly/connector on the system
  • Dell OptiPlex NX | Service Manual - Page 96
    details). 2. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 3. Remove the computer cover. 4. Remove the expansion-card cage, and locate the that the system battery is functioning correctly. 4-22 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 97
    the components, assemblies, and subassemblies in the Dell OptiPlex GXa midsize computer. If you are servicing a low-profile, mini tower, or Net assumes the following: • You have performed the steps in "Precautionary Measures" found later in this chapter. • You have removed the computer cover. •
  • Dell OptiPlex NX | Service Manual - Page 98
    touch an unpainted metal surface on the back of the computer to discharge any static charge from your body. Avoid touching components and contacts on a card, and avoid touching pins on a chip to prevent static electricity damage. 5-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 99
    /replacement procedures in this chapter. 3.5-inch diskette drive diskette/tape drive interface cable external drive bays power supply hard-disk drive bracket system board hard-disk drive interface cable expansion-card slots (5) Figure 5-1. Internal View of the Midsize Computer expansion
  • Dell OptiPlex NX | Service Manual - Page 100
    screw. 3. Pull the floor stand away from the computer. Disengage the three orientation nubs that position and help hold the floor stand to the computer. 5-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 101
    Cover securing buttons (2) front of computer Figure 5-3. Computer Cover Removal To remove the computer cover, follow these steps: 1. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 2. Press in on the two securing buttons until the cover is free to swing up
  • Dell OptiPlex NX | Service Manual - Page 102
    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 computer cover. When these clips are released, the button comes free from the front panel of the cover. 5-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 103
    posts (2) ring-tabs (2) Figure 5-5. Front-Panel Insert Removal To remove a front-panel insert, follow these steps: 1. Lay the computer cover upside down on a flat work surface, with the front of the cover facing you. 2. From the front of the cover, use your thumbs to push inward on the insert until
  • Dell OptiPlex NX | Service Manual - Page 104
    (see Figure 5-18). 3. Remove the mounting screw holding the control panel to the chassis. 4. Slide the control panel out of the hooks holding it to the chassis. Note the routing of the control panel cable as you remove it from the chassis. 5-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 105
    any of the procedures in the following subsections. system power supply DC power cable diskette/tape drive interface cable 3.5-inch diskette drive hard-disk drive bracket EIDE cable DSKT connector Figure 5-7. Drive Hardware primary EIDE interface connector (IDE1) secondary EIDE interface
  • Dell OptiPlex NX | Service Manual - Page 106
    side of the drive, and remove the drive from the bracket. When you replace the 3.5-inch diskette drive, be sure that the two hooks on the right side of the bracket engage the mounting holes in the side of the 3.5-inch diskette drive. 5-10 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 107
    To remove a 5.25-inch drive assembly 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 in on the two retaining tabs (one on each side of the drive), and slide the drive assembly forward to remove it
  • Dell OptiPlex NX | Service Manual - Page 108
    disk drive bracket, place the lower-back tab of the hard-disk drive bracket into position (be sure that the opening in the lower-back tab is over the alignment tab on the chassis); then rotate the front of the bracket down into position. 5-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 109
    (4) for side-mounted drive hard-disk drive bracket hard-disk drive Figure 5-12. Hard-Disk Drive Removal 1. Remove the hard-disk drive bracket. 2. Remove the four screws that attach the hard-disk drive to the hard-disk drive bracket. One hard-disk drive attaches to the hard-disk drive bracket at the
  • Dell OptiPlex NX | Service Manual - Page 110
    the power supply from the slot in the chassis. 5. Lift the system power supply from the computer. NOTE: When replacing the power supply on an enhanced manageability system, ensure that the replacement power supply is an EM power supply. 5-14 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 111
    riser board and any installed expansion cards. Dell recommends that you remove the expansion-card cage first before removing or installing expansion cards. If you are not removing any expansion cards, leave the external cables attached to them. Expansion-Card Cage lever expansioncard cage notch
  • Dell OptiPlex NX | Service Manual - Page 112
    the expansion card being removed. 2. Remove the expansion-card cage. 3. Remove the retaining screw from the card-mounting bracket. 4. Grasp the expansion card by its corners, and carefully remove it from the expansion-card connector. 5-16 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 113
    cage riser board Figure 5-16. Riser Board Removal 1. Remove the expansion-card cage and all expansion cards. 2. On a flat work surface, turn the expansion-card cage over, with the riser board facing up. 3. Remove the riser-board mounting screws. 4. Slide the riser board down until it stops; then
  • Dell OptiPlex NX | Service Manual - Page 114
    1. Disconnect all cables from their connectors at the back of the computer. 2. Remove the expansion-card cage. 3. Disconnect all ) cartridge/ heat sink assembly, and the guide bracket assembly from the old system board and install them on Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 115
    connector (MONITOR) USB connectors (USB) optional NIC connector (ENET) video-memory upgrade socket (VIDEO_UPGRADE) CD-ROM audio interface connector (CD_IN) riser board connector (RISER) secondary EIDE interface connector (IDE2) keyboard/mouse connectors (stacked) (KYBD/MOUSE) parallel/serial
  • Dell OptiPlex NX | Service Manual - Page 116
    a video-memory upgrade module in the video-memory upgrade socket on the system board. Adding additional video memory increases the system's video performance and provides additional modes for high-resolution/expanded color applications. 5-20 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 117
    2 and 3. 4. Replace the expansion-card cage. 5. Replace the computer cover, and reconnect the AC power cable to the AC outlet. Press the power switch on the computer to reboot the system. NOTE: As the system boots, it automatically detects the presence of the new video-memory upgrade module and
  • Dell OptiPlex NX | Service Manual - Page 118
    can replace the microprocessor on your system board with any Dell-supported microprocessor upgrade. The microprocessor upgrade kit is shipped with guide bracket assembly metal standoffs (2) Figure 5-22. SEC Cartridge/Heat Sink Removal 5-22 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 119
    the system power supply. WARNING SEC cartridge/heat sink assembly. 3. Disconnect the microprocessor fan connector from the located between the SERIAL 2 connector and the MONITOR connector (see Figure 5-18). 4. Release /heat sink assembly out of its guide bracket assembly/connector on the system
  • Dell OptiPlex NX | Service Manual - Page 120
    details). 2. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 3. Remove the computer cover. 4. Remove the expansion-card cage, and locate the that the system battery is functioning correctly. 5-24 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 121
    the components, assemblies, and subassemblies in the Dell OptiPlex GXa mini tower computer. If you are servicing a low-profile, midsize, or Net PC assumes the following: • You have performed the steps in "Precautionary Measures" found later in this chapter. • You have removed the computer cover. •
  • Dell OptiPlex NX | Service Manual - Page 122
    touch an unpainted metal surface on the back of the computer to discharge any static charge from your body. Avoid touching components and contacts on a card, and avoid touching pins on a chip to prevent static electricity damage. 6-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 123
    , when performing the component removal/replacement procedures in this chapter. power supply external drive bays hard-disk drive bracket system board riser board Figure 6-1. Internal View of the Mini Tower Computer expansion-card cage Removing and Replacing Parts on the Mini Tower Chassis 6-3
  • Dell OptiPlex NX | Service Manual - Page 124
    button To remove the computer cover, follow these steps: 1. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 2. Remove the padlock if one is installed or with proper airflow inside the computer. 6-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 125
    Front Bezel tab release retaining hooks (2) Figure 6-3. Front-Bezel Removal 1. Press the tab release marked with the icon. 2. Tilt the bezel away from the chassis. 3. Disengage the two retaining hooks at the bottom of the bezel, and pull the bezel away from the chassis. Removing and Replacing Parts
  • Dell OptiPlex NX | Service Manual - Page 126
    comes free. 3. To remove the power button or the reset button, use a small screwdriver and push in on the two or three plastic clips that hold the button to the bezel. When these clips are released, the button comes free from the bezel. 6-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 127
    Front-Panel Inserts posts (2) front bezel 5.25-inch front-panel insert ring-tabs (2) Figure 6-5. 5.25-Inch Front-Panel Insert Removal To remove a 5.25-inch front-panel insert, follow these steps: 1. Hold the bezel with the front facing you. 2. From the front of the bezel, use your thumbs to press
  • Dell OptiPlex NX | Service Manual - Page 128
    , press the eject button mechanism toward the front panel to snap the plastic insert out of its opening. To replace the 3.5-inch front-panel insert, work from outside the bezel. Place the insert in position, and press it into the opening. 6-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 129
    chassis hooks (2) control panel cable control panel screw Figure 6-7. Control Panel Removal 1. Remove the hard-disk drive bracket. 2. Disconnect the control panel cable from the PANEL connector on the system board (see Figure 6-20). 3. Remove the mounting screw holding the control panel to the
  • Dell OptiPlex NX | Service Manual - Page 130
    (IDE2) hard-disk drive bracket EIDE cable Figure 6-8. Drive Hardware Externally Accessible Drive Assemblies The following subsections contain removal/replacement procedures for drives installed in the externally accessible drive bays. 6-10 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 131
    retaining-tab release button Figure 6-9. 3.5-Inch Diskette Drive Assembly Removal 1. Disconnect the DC power cable and the interface cable from the back of the 3.5-inch diskette drive. 2. Press the retaining-tab release button, and pull the drive assembly for- ward to remove it. Removing and
  • Dell OptiPlex NX | Service Manual - Page 132
    hooks (2) Figure 6-10. 3.5-Inch Diskette Drive Bracket When you replace the 3.5-inch diskette drive, be sure that the two hooks on the right side of the bracket engage the mounting holes in the side of the 3.5-inch diskette drive. 6-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 133
    Assembly retaining tabs (2) Figure 6-11. 5.25-Inch Drive Assembly Removal To remove a 5.25-inch drive assembly 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 in on the two retaining tabs (one
  • Dell OptiPlex NX | Service Manual - Page 134
    When you replace the 5.25-inch drive, align the front of the drive flush with the tab at the front of the mounting plate. Insert the four screws, and tighten them in the order stamped on the bottom of the 5.25-inch drive-mounting plate. 6-14 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 135
    Removal To remove the hard-disk drive bracket, follow these steps: 1. Disconnect the DC power cable and the interface cable from the back of each hard-disk drive installed in the hard-disk drive bracket. 2. Remove the screw that secures the hard-disk drive bracket to the drive cage in the chassis
  • Dell OptiPlex NX | Service Manual - Page 136
    -disk drive attaches to the hard-disk drive bracket at the sides of the drive. The other hard-disk drive attaches to the hard-disk drive bracket at the bottom of the hard-disk drive. 3. Slide the drive out of the hard-disk drive bracket. 6-16 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 137
    ->," and rotate it upward until it locks. Press the securing tab to release the power supply. 3. Disconnect the DC power cables from the system board and the drives. 4. Facing the left side of the computer, move the front end of the system power supply toward you, and lift it up to disengage the
  • Dell OptiPlex NX | Service Manual - Page 138
    expansion-card cage, align the tabs on the left and right sides of the expansion-card cage with the slots on the back and bottom of the chassis. With the securing lever in its extended position, slide the expansion-card cage into place. 6-18 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 139
    Card expansion card retaining screw card-mounting bracket card-slot opening riser board expansion-card connector Figure 6-17. Expansion-Card Removal 1. Disconnect any cables from the expansion card being removed. 2. Remove the expansion-card cage. 3. Remove the retaining screw from the card
  • Dell OptiPlex NX | Service Manual - Page 140
    cage on a flat work surface with the riser board facing up. 3. Remove the riser-board mounting screws. 4. Slide the riser board away from the release handle until it stops; then lift the riser board away from the expansion-card cage. 6-20 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 141
    Disconnect all cables from their connectors at the back of the computer. 2. Remove the expansion-card cage. 3. Disconnect sink assembly, and the guide bracket assembly from the old system board and is equipped with a NIC connector, ensure that the replacement board contains a NIC connector. When you
  • Dell OptiPlex NX | Service Manual - Page 142
    (POWER_2) battery socket (BATTERY) system board jumpers primary EIDE interface connector (IDE1) diskette/tape drive interface connector (DSKT) front of computer control panel connector (PANEL) Figure 6-20. System Board Components 6-22 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 143
    follow these steps: 1. Remove the system power supply. 2. Locate the three DIMM Video Memory You can upgrade video memory from 2 to 4 MB by installing a video-memory upgrade module in the video-memory upgrade socket on the system board. Adding additional video memory increases the system's video
  • Dell OptiPlex NX | Service Manual - Page 144
    is listed incorrectly, repeat steps 1 through 6 to reseat the video-memory upgrade module and verify that the computer acknowledges the module. 7. Run the system diagnostics (Video Test Group) to test the new videomemory upgrade module. 6-24 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 145
    can replace the microprocessor on your system board with any Dell-supported microprocessor upgrade. The microprocessor upgrade kit is shipped with release latches (2) heat sink SEC cartridge heat sink clips (2) guide bracket assembly metal standoffs (2) Figure 6-24. SEC Cartridge/Heat Sink
  • Dell OptiPlex NX | Service Manual - Page 146
    system power supply. cartridge/heat sink assembly. 3. Disconnect the microprocessor fan connector from the SERIAL 2 connector and the MONITOR connector (see Figure 6-20). 4. sink assembly out of its guide bracket assembly/connector on the Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 147
    system configuration information (see Appendix A, "System Setup Program," for details). 2. Turn off power to all peripherals, and disconnect the AC power cable from its AC outlet. 3. Remove the computer cover. 4. Remove the expansion-card cage, and locate the battery in the front right corner of the
  • Dell OptiPlex NX | Service Manual - Page 148
    6-28 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 149
    removing the components, assemblies, and subassemblies in the OptiPlex NX Net PC chassis. If you are servicing a low-profile, midsize, or mini tower computer the following: • You have performed the steps in "Precautionary Measures" found later in this chapter. • You have removed the computer cover.
  • Dell OptiPlex NX | Service Manual - Page 150
    components and contacts on a card, and avoid touching pins on a chip to prevent static electricity damage. Stand for Vertical Orientation captive screw locator pins (2) (on underside of stand) front bezel Figure 7-1. Optional Stand Removal 7-2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 151
    To remove the stand, if one is installed, follow these steps: 1. Place the right side of the computer on a flat work surface. 2. Unscrew the captive screw using your fingers or a wide flat-blade screwdriver. 3. Pull the stand away from the computer. Disengage the locator pins that
  • Dell OptiPlex NX | Service Manual - Page 152
    with proper airflow inside the computer. You may have to press gently downward on the back edge of the cover while engaging the locking mechanism. 7-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 153
    panel cable cable retention tabs (2) chassis tabs (3) Figure 7-4. Control Panel Removal To remove the control panel, follow these steps: 1. Remove the power supply. 2. Disconnect the control panel cable from the PANEL connector on the system board (see Figure 7-7). 3. From inside the chassis
  • Dell OptiPlex NX | Service Manual - Page 154
    the expansion card if one is installed. 3. Remove the expansion-card cage. 4. Remove the expansion card if one is installed. 5. Remove the four hard-disk drive mounting screws that attach the hard- disk drive to the expansion-card cage. 7-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 155
    -Supply Removal To remove the system power supply, follow these steps: 1. Disconnect the AC power cable from the back of the computer. 2. Disconnect the DC power cables from the system board (see Figure 7-7) and the hard-disk drive. 3. Remove the expansion-card cage. 4. Remove the EIDE cable from
  • Dell OptiPlex NX | Service Manual - Page 156
    -card cage. The expansion-card cage contains the hard-disk drive, the riser board, and any installed expansion card. You must remove the expansion-card cage to remove or install the hard-disk drive, an expansion card, or the riser board. 7-8 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 157
    Cage Removal To remove the expansion-card cage, follow these steps: 1. Disconnect any external cables from the expansion card if one is installed. 2. Disconnect the DC power cable and the EIDE cable from the back of the hard-disk drive. 3. Rotate the securing lever toward the back of the computer
  • Dell OptiPlex NX | Service Manual - Page 158
    . 2. Remove the retaining screw from the card-mounting bracket. 3. Grasp the expansion card by its corners, and carefully remove it from the expansion-card connector. 4. Disconnect any network or other I/O cables from the expansion card. 7-10 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 159
    7-10. Riser Board Removal To remove the riser board, follow these steps: 1. Remove the expansion-card cage. 2. Remove the expansion card if one is installed. 3. Lay the expansion-card cage on a flat work surface, with the riser board facing up. 4. Remove the riser-board mounting screw. 5. Slide the
  • Dell OptiPlex NX | Service Manual - Page 160
    a video-memory upgrade module in the video-memory upgrade socket on the system board. Adding additional video memory increases the system's video performance and provides additional modes for high-resolution/expanded color applications. 7-12 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 161
    steps 2 and 3. 4. Replace the expansion-card cage. 5. Replace the computer cover and reconnect the AC power cable to the AC outlet. Press the power switch on the computer to reboot the system. NOTE: As the system boots, it automatically detects the presence of the new video-memory upgrade module and
  • Dell OptiPlex NX | Service Manual - Page 162
    Dell-supported clips (2) guide bracket assembly power supply. WARNING: The SEC cartridge/heat sink assembly can get extremely hot during system operations. Be sure that the assembly has had sufficient time to cool before touching it. 7-14 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 163
    Disconnect the microprocessor fan connector from the 3-pin connector on the system board (labeled "FAN"), located between the SERIAL 2 connector and the MONITOR . 6. Lift the SEC cartridge/heat sink assembly out of its guide bracket assembly/connector on the system board. NOTE: When installing the
  • Dell OptiPlex NX | Service Manual - Page 164
    the expansion-card cage. 3. Disconnect all cables board, remove the microprocessor/heat sink assembly, video-memory upgrade module (if present), and the power to all peripherals, and disconnect the AC power cable from its AC outlet. 7-16 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 165
    a danger of the new battery exploding if it is incorrectly installed. When you replace the system battery, orient the new battery with the "+" instructions. 6. Insert the battery into the socket (with the positive side labeled "+" facing upwards), and snap it into place. 7. Replace the expansion-card
  • Dell OptiPlex NX | Service Manual - Page 166
    7-18 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 167
    Appendix A System Setup Program This appendix, which applies to all OptiPlex GXa and OptiPlex NX computer families, describes the System Setup program, which is used to change the system configuration information stored in NVRAM on the system board. To enter
  • Dell OptiPlex NX | Service Manual - Page 168
    : Disabled 00:00 Power Management: Disabled Wakeup On LAN: On (Add-in NIC) Integrated Devices Sound: On NIC: On Mouse: On Serial Port 1: Serial Port 2: Parallel Port: Parallel Mode: IDE Hard Disk: Diskette: Speaker: Auto Auto 378h AT Auto Auto On Pentium® II Processor 233 MHz Level 2 Cache: 512
  • Dell OptiPlex NX | Service Manual - Page 169
    the appropriate number for each field. NOTES: 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. Net PC chassis supports only one hard-disk drive and no CD-ROM drive or tape drive. Reserved
  • Dell OptiPlex NX | Service Manual - Page 170
    change takes effect. NOTE: An optional Wakeup On LAN-capable network card is required to use the Wakeup On LAN feature. Sound Enables (On) or disables (Off) the integrated sound controller. NIC Enables (On) or disables (Off) the NIC. A-4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 171
    controller. Speaker Enables on-board speaker. Microprocessor Displays type of microprocessor installed. Level 2 Cache Displays size of level 2 cache memory installed. System Memory Displays entire amount of installed memory detected in system, except for memory on EMS expansion cards. Video
  • Dell OptiPlex NX | Service Manual - Page 172
    A-6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 173
    , 6-26 Net PC computer, 7-16 beep codes, 3-1 BIOS, flash ROM, 1-4 block diagram low-profile computer, 1-28 midsize computer, 1-30 mini tower computer, 1-31 Net PC computer, 1-35 boot routine observing while troubleshooting, 2-3 bracket, hard-disk drive, removal midsize computer, 5-12 mini tower
  • Dell OptiPlex NX | Service Manual - Page 174
    , 7-12 removal, low-profile computer, 4-18 removal, midsize computer, 5-20 removal, mini tower computer, 6-23 removal, Net PC computer, 7-12 types and sizes, 1-16 disk drives. See diskette drives, drives, hard-disk drives 2 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 175
    for midsize computer, 1-14 riser board for mini tower computer, 1-15 riser board for Net PC computer, 1-12 system board, 1-1 error messages about, 3-3 list of, 3-4 Ethernet controller, 1-5 expansion-card cage removal low-profile computer, 4-13 midsize computer, 5-15 Net PC computer, 7-9 expansion
  • Dell OptiPlex NX | Service Manual - Page 176
    internal visual inspection, 2-4 interrupt assignments, list of, 1-20 ISA expansion-card connectors low-profile computer, 1-12 midsize computer, 1-13 mini tower computer, 1-14 Net PC computer, 1-12 H hard-disk drives L2 cache, 1-3, 1-16 4 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 177
    tower computer, 6-25 removal, Net PC computer, 7-14 N network cable requirements, 1-6 NIC connector indicators, 1-5 controller, 1-5 optional support (EM systems), 1-5 standards, 1-5 O online documentation, 1-17 P PCI expansion-card connectors low-profile computer, 1-12 midsize computer, 1-13 mini
  • Dell OptiPlex NX | Service Manual - Page 178
    diagnostics about, 1-17 running, 2-6 system error messages about, 3-3 list of, 3-4 system power supply removal, low-profile computer, 4-12 removal, midsize computer, 5-14 removal, mini tower computer, 6-17 removal, Net PC computer, 7-7 6 Dell OptiPlex GXa and OptiPlex NX Systems Service Manual
  • Dell OptiPlex NX | Service Manual - Page 179
    troubleshooting boot routine, 2-3 diagnostics, 2-6 external visual inspection, 2-2 initial procedures, 2-1 internal visual inspection, 2-4 resource conflicts, 2-6 service-related information, 1-17, 1-22 using beep codes, 3-1 U universal power supply, 115-/230-VAC, 1-7 upgrade options, 1-16 V video
  • Dell OptiPlex NX | Service Manual - Page 180
  • Dell OptiPlex NX | Service Manual - Page 181
    ® www.dell.com Printed in the U.S.A. P/N 51555 Rev. A01
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