NEC Direction T-Series Manual
  1. Manuals
  2. Brands
  3. NEC Manuals
  4. Desktop
  5. Direction T-Series
  6. Manual
NEC Direction T-Series Manual

NEC Direction T-Series Manual

Direction t-series
Hide thumbs Also See for Direction T-Series:
Table of Contents

Advertisement

Quick Links

Download this manual
PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is
the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc.
(hereinafter "NECCSD") and/or its licensors. NECCSD and/or its licensors, as appropriate,
reserve all patent, copyright and other proprietary rights to this document, including all de-
sign, manufacturing, reproduction, use, and sales rights thereto, except to the extent said
rights are expressly granted to others.
The NECCSD product(s) discussed in this document are warranted in accordance with the
terms of the Warranty Statement accompanying each product. However, actual
performance of each such product is dependent upon factors such as system configuration,
customer data, and operator control. Since implementation by customers of each product
may vary, the suitability of specific product configurations and applications must be
determined by the customer and is not warranted by NECCSD.
To allow for design and specification improvements, the information in this document is
subject to change at any time, without notice. Reproduction of this document or portions
thereof without prior written approval of NECCSD is prohibited.
Direction is a trademark of NEC Computer Systems Division, Packard Bell NEC, Inc.
NEC is a registered trademark of NEC Corporation; MultiSync is a registered trademark of NEC Technologies, Inc.; these trademarks are
used under license by NEC Computer Systems Division, Packard Bell NEC, Inc.
All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark
owners.
First Printing — August 1997
Copyright 1997
NEC Computer Systems Division
Packard Bell NEC, Inc.
1414 Massachusetts Avenue
Boxborough, MA 01719-2298
All Rights Reserved

Advertisement

Table of Contents
loading

Related Manuals for NEC Direction T-Series

Summary of Contents for NEC Direction T-Series

  • Page 1 Direction is a trademark of NEC Computer Systems Division, Packard Bell NEC, Inc. NEC is a registered trademark of NEC Corporation; MultiSync is a registered trademark of NEC Technologies, Inc.; these trademarks are used under license by NEC Computer Systems Division, Packard Bell NEC, Inc.

  • Page 2: Table Of Contents

    Contents Page Preface......................... Abbreviations....................... Section 1 Technical Information System Board ......................1-1 Processor ......................1-2 System Cache/Memory ..................1-2 Chipset ......................... 1-3 PCI Local Bus ...................... 1-3 Expansion Bus ....................1-3 BIOS ........................1-3 Plug and Play Support..................1-4 CMOS Memory/Real-Time Clock Battery............. 1-5 DMA/IRQ Settings ....................
  • Page 3 Contents Displaying a Submenu................... 2-4 Getting Help ......................2-4 Main Menu ........................2-5 Floppy Options Submenu ..................2-6 Primary/Secondary IDE Master/Slave (Submenus) ..........2-7 Advanced Menu......................2-9 Resource Configuration Submenu ................. 2-10 Peripheral Configuration Submenu ................ 2-11 Keyboard Configuration Submenu................. 2-12 Video Configuration Submenu ................
  • Page 4 Contents System Power Cables..................3-16 Device Cabling...................... 3-17 Cabling an IDE Device................... 3-17 Cabling a Diskette Drive ................3-18 Storage Device Installation..................3-19 Removing the Front Panel ................3-19 Installing a 3 1/2-Inch Device ................. 3-20 Installing a 5 1/4-Inch Device ................. 3-22 Accessing the CD-ROM Reader..............
  • Page 5 Contents Power Supply Removal..................5-10 System Board Removal..................5-11 Illustrated Parts Breakdown ..................5-11 Appendix A System Specifications Appendix B Connector Pin Assignments Processor Socket ......................B-4 Serial Interface Connectors ..................B-4 Parallel Interface Connector ..................B-5 Power Supply (Primary)....................B-6 Keyboard and Mouse Connectors.................
  • Page 6 Contents Figure 3-9 System Board Cable Connectors ..............3-14 Figure 3-10 Diskette Drive Signal Cable............... 3-15 Figure 3-11 IDE Signal Cable ..................3-15 Figure 3-12 Power Cable Connectors................3-16 Figure 3-13 Connecting IDE Device Cables ..............3-17 Figure 3-14 Connecting 1.2-MB Diskette Drive Cables ..........3-18 Figure 3-15 Releasing the Front Panel ................
  • Page 7 viii Contents Table 1-3 Interrupt Level Assignments................. 1-5 Table 1-4 DMA Assignments ..................1-6 Table 2-1 Setup Key Functions ..................2-4 Table 3-1 Optional Memory Configurations ..............3-9 Table 4-1 Problems and Solutions ................4-4 Table 4-2 Beep Code Descriptions ................4-10 Table 5-1 Disassembly Sequence..................
  • Page 8 Contents...

  • Page 9: Preface

    Preface This service and reference manual contains technical information necessary for servicing and repairing the Direction T-Series systems. The manual includes system setup information, procedures for installing options, and troubleshooting. The manual is written for NECCSD-trained customer engineers, system analysts, service center personnel, and dealers.

  • Page 10: Abbreviations

    Abbreviations ampere DMAC DMA controller alternating current disk operating system advanced technology DRAM dynamic RAM (IBM PC) error checking and correction Bulletin Board Service extended data output binary-coded decimal Enhanced Graphics Adapter BIOS Customized Utility EPROM erasable and programmable BIOS basic input/output system binary digit EVGA...
  • Page 11 Abbreviations integrated peripheral controller PLCC plastic leaded chip carrier inches per second phase lock loop interrupt request peak-to-peak kilo (1024) programmable peripheral interface kilo (1000) PROM programmable ROM kilobyte quad flat pack kilogram random-access memory kilohertz RAMDAC RAM digital-to-analog pound converter light-emitting diode row address strobe...
  • Page 12 Abbreviations xiii VESA-compliant feature connector Video Graphics Array VRAM video RAM watt write...

  • Page 13: Technical Information

    Section 1 Technical Information ™ This section provides an overview of the NEC Direction T-Series computers. Table 1-1 describes the various features of the different models. The subsections that follow provide more detailed information on the system features. Table 1-1 System Features...

  • Page 14: Processor

    Technical Information Processor The system board uses a 200-MHz or 233-MHz Intel Pentium processor with MMX technology. The MMX processor improves audio, video, and 3D graphics performance. The system board comes equipped with the latest 321-pin zero-insertion-force (ZIF) socket (Socket 7) for easy processor upgrades with next generation processors. System Cache/Memory To utilize the processor’s power, the system features an optimized 64-bit memory interface and provides support for secondary cache to compliment the processor’s internal caches.

  • Page 15: Chipset

    Technical Information Chipset The Intel 82430TX PCI chipset provides DMA, memory, bus, and cache control. The chipset includes the following chips: 430TX System Controller (MTXC) integrates the cache, main memory DRAM control and provides bus control to handle transfers between the processor, cache, main memory, and PCI bus.

  • Page 16: Plug And Play Support

    Technical Information Table 1-2 System Memory Map Memory Address Size Function 100000-10000000 255 MB Extended Memory F0000-FFFFF 64 KB BIOS EC000-EFFFF 16 KB Boot Block (available as UMB) EA000-EBFFF 8 KB ECSD (Plug and Play configuration and DMI) E9000-E9FFF 4 KB Reserved for BIOS E8000-E8FFF 4 KB...

  • Page 17: Cmos Memory/Real-Time Clock Battery

    Technical Information CMOS Memory/Real-Time Clock Battery The 430TX PCI ISA IDE Xcelerator (PIIX4) on the system board stores system information in non-volatile CMOS memory. The chip also contains the system’s real-time clock. Both are maintained by a 3-volt coin cell lithium battery on the system board. The battery is replaceable.

  • Page 18: Ide Ports

    Technical Information Table 1-4 DMA Assignments Resource Audio Audio/Parallel port Diskette drive ECP parallel port/Audio Reserved, cascade channel Available Available Available IDE Ports The system board provides two IDE ports: a fast IDE port (the primary channel) a standard IDE port (the secondary channel). Each port supports two devices for a total of four IDE devices.

  • Page 19: Sound System

    Technical Information The two USB ports allow additional new plug and play serial devices without removing the system cover. Simply plug the USB device into the port. The speed varies between 12 megabits per second (Mbps) for printers and 1.5 Mbps for mice and keyboards. Up to 127 USB devices can be connected to the computer.

  • Page 20: Cd-Rom Reader

    Technical Information CD-ROM READER The reader can be used to load programs from a CD or it can be used to play audio CDs. The reader operates at different speeds depending on whether the CD contains music or data. The reader is fully compatible with Kodak Multisession Photo CDs™ and standard CDs.

  • Page 21: Setup Utility

    Section 2 Setup Utility This section describes the Setup utility program that allows the system configuration information to be viewed and changed. NOTE: The system ships from the factory with the correct system parameters for the configuration. Unless setting the time and date, setting security features, customizing the system, or adding optional hardware, Setup does not need to be run.

  • Page 22: How To Start Setup

    Setup Utility to customize the system with security features such as passwords. to set system parameters after replacing the CMOS battery. HOW TO START SETUP To start the Setup utility, follow these steps: Turn on or reboot the system. Press F2 after POST begins, but before the system boots up. You have about five seconds to press F2.

  • Page 23: How To Use Setup

    Setup Utility HOW TO USE SETUP The Setup utility has a Main Menu window and five top-level menus with submenus. The Main Menu window contains the following areas: A title line the top line of the Main Menu. This line displays the Setup utility name and copyright message.

  • Page 24: Legend Bar

    Setup Utility To select an option from the menu bar, use the left and right arrow keys. See “Exiting Setup” in this section for a description on exiting the Main Menu. Legend Bar Use the keys listed in the legend bar on the bottom of the Setup menu to make the selections or exit the current menu.

  • Page 25: Main Menu

    Setup Utility MAIN MENU This section describes the Main Menu parameters. Other menu parameters are available by selecting submenus. Use the arrow keys to move the cursor to a parameter and press Enter to select a submenu. Items with lighter text are not available. Processor Type This field displays your computer’s processor type.

  • Page 26: Floppy Options Submenu

    Setup Utility System Time and Date These two fields specify the correct time and date. To change them, press the Tab key to highlight the field you want to change, then press the + or – keys to change the setting. Hard Disk Predelay This option keeps the BIOS from searching for a drive until the specified predelay time has passed.

  • Page 27: Primary/Secondary Ide Master/Slave (Submenus)

    Setup Utility To return to the Main Menu, press the Esc key. IDE Devices The next four entries, Primary IDE Master and Slave, and Secondary IDE Master and Slave refer to settings for IDE devices. These fields report the presence of, and identification for as many as four physical IDE devices, two on each PCI/IDE connector.
  • Page 28 Setup Utility Sectors — If your device configuration type is set to “Auto,” this field displays the number of sectors for your hard drive and cannot be changed. If the Type is set to “User,” you must enter the correct number of sectors for your hard drive. Maximum Capacity —...

  • Page 29: Advanced Menu

    Setup Utility Ultra DMA This option sets the Ultra DMA Mode for the hard drive. The options include: Mode 0 Mode 1 Mode 2 (default) Disabled. To return to the Main Menu, press the Esc key. To move to the Advanced Menu, press the right arrow key.

  • Page 30: Resource Configuration Submenu

    2-10 Setup Utility Resource Configuration Submenu This option allows you to reserve specific resources for use by legacy ISA devices. To enter the submenu, highlight this field, then press the Enter key. The following options are displayed: Memory Reservation Submenu This option lets you reserve specific upper memory blocks for use by legacy ISA devices.

  • Page 31: Peripheral Configuration Submenu

    Setup Utility 2-11 Peripheral Configuration Submenu This submenu can be used to configure your system’s ports or peripheral devices. To enter the submenu, highlight this field, then press the Enter key on your keyboard. The following options appear: Serial Port A/Serial Port B These options let you configure your system’s Serial Port A or Serial Port B.

  • Page 32: Keyboard Configuration Submenu

    2-12 Setup Utility Floppy Disk Controller This option configures the system’s diskette drive controller. Select “Enabled” (default) or “Disabled.” IDE Controller This option configures the system’s integrated IDE controller. Select from “Primary,” “Secondary,” “Both” (default) or “Disabled.” To return to the Advanced Menu, press the Esc key. Keyboard Configuration Submenu This submenu is used to configure specific keyboard features.

  • Page 33: Video Configuration Submenu

    Setup Utility 2-13 Video Configuration Submenu This submenu can be used to configure specific video features. To enter the submenu, highlight the field, then press the Enter key on your keyboard. The following options appear: Palette Snooping This option controls the ability of a primary PCI graphics controller to share a common palette with an ISA add-in video board.

  • Page 34: Security Menu

    2-14 Setup Utility Clear All DMI Event Logs This option clears the DMI Event Log after rebooting the system. Choose “No” or “Yes.” Event Logging This option enables logging of DMI Events. Choose “Disabled” or “Enabled” (default). Mark DMI Events as Read This option is used to mark off all DMI Events as read.

  • Page 35: Boot Menu

    Setup Utility 2-15 Hard Drive This option enables or disables hard drive power down. Your choices are “Enabled” (default) or “Disabled.” VESA Video Power Down This option sets the monitor’s power management mode. Your choices are “Disabled,” “Standby” (default), “Suspend,” or “Sleep.” Press the right arrow (cursor) key to move to the Boot Menu.

  • Page 36: Hard Drive Submenu

    2-16 Setup Utility Hard Drive Submenu This submenu lists the system’s available hard drives. Your computer tries to boot to the operating system on the first device listed on the Hard Drive submenu. If no operating system is found, the system continues trying the drives in the order they are listed until an operating system is located.
  • Page 37 Setup Utility 2-17 Load Setup Defaults This option loads the Setup program’s default values. Load Custom Defaults This option loads Custom default settings. Save Custom Defaults This option saves your changes as Custom default settings. Discard Changes This option discards any changes made to BIOS settings during the current session but does not reboot the system.

  • Page 38: Option Installation

    Section 3 Option Installation This section provides instructions for installing the following options: expansion boards DIMM memory upgrade video upgrade data storage devices external options. All options require that the access cover be removed. Procedures for removing the cover are included in this section. GENERAL RULES FOR INSTALLING OPTIONS Follow these general rules when installing system options.

  • Page 39: Precautions

    Option Installation PRECAUTIONS Take care when working inside the system and when handling computer components. Avoid electric shock or personal injury by observing the following warning. WARNING: Before removing the access cover, turn off the power and unplug the system power cable.

  • Page 40: Removing The Access Cover

    Option Installation REMOVING THE ACCESS COVER The following subsections describe how to remove the access cover from the system. WARNING: Before removing the access cover, turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged.
  • Page 41 Option Installation Slide the cover toward the rear until it stops. (If it is very tight, you can also carefully insert a screwdriver into the slot adjacent to the fans at the back side of the cover, and very gently rock the cover loose, taking care not to scratch the system).

  • Page 42: Replacing The Access Cover

    Option Installation REPLACING THE ACCESS COVER To replace the access cover, use the following procedure. Gently set the access cover inside the edge of the case, taking care not to bend the metal tabs. Align the tabs on the access cover with their corresponding slots on the system. Insert the tabs on the edge of the access cover into their slots on the system.

  • Page 43: Expansion Boards

    Option Installation EXPANSION BOARDS Your computer’s system board features several expansion slots that can accommodate accessory adapter boards, such as a sound board or TV board. Depending on the system you purchased, some of these devices may be installed in your system. The Direction T-Series supports ISA Plug and Play expansion boards.

  • Page 44: Expansion Board Installation

    Option Installation Expansion Board Installation Install expansion boards in the system as follows. Remove the access cover. Follow any preinstallation instructions that come with the expansion board (such as setting switches or jumpers on the board). Remove the screw securing an expansion slot cover and remove the cover. Figure 3-5 Removing the Slot Cover Save the screw for installing the expansion board.

  • Page 45: Expansion Board Removal

    Option Installation Replace the access cover. Expansion Board Removal Remove the system access cover. Label and remove any cables connected to the board. Remove the screw that secures the board to the support bracket. Pull the board out of the connector. Gently rock the board from side-to-side to release it from its connector.

  • Page 46: Dimm Removal

    Option Installation Use the following table to determine the DIMM configuration needed to upgrade memory. Table 3-1 Optional Memory Configurations Bank 0 Bank 1 Total RAM 1 M x 64 (8 MB) Empty (0 MB) 8 MB (min. memory) Empty (0 MB) 1 M x 64 (8 MB) 8 MB (min.
  • Page 47 3-10 Option Installation CAUTION: Reduce static discharge by touching the system’s metal chassis. Remove the access cover. Locate the DIMM sockets. To remove a DIMM from its socket, press the plastic clips at the outer edges of the socket away from the DIMM. Carefully rock the DIMM to pull it from the socket.

  • Page 48: Dimm Installation

    Option Installation 3-11 DIMM Installation Use the following procedure to install a DIMM. Remove the access cover. Locate the DIMM sockets. Remove any currently-installed DIMMs that are not needed. See “DIMM Removal” in this chapter. CAUTION: Before installing a DIMM, reduce static discharge by touching the system’s metal chassis.

  • Page 49: Data Storage Devices

    3-12 Option Installation DATA STORAGE DEVICES The system board in your computer supports the following storage devices: two diskette drives, including the standard 1.44-MB diskette drive and a tape backup unit up to four IDE drives. Device Slots Your computer has seven storage device slots: a 3.5-inch accessible device slot (contains the standard 1.44-MB diskette drive) two internal 3.5-inch hard drive slots (one contains the hard drive) four accessible device slots...

  • Page 50: Device Preparation

    Option Installation 3-13 Device Preparation Before installing a storage device in the system, follow any preinstallation instructions that come with the device. For example, check the following: Diskette drive remove any termination jumpers on the optional diskette drive. See the documentation that comes with the drive. IDE device check the jumper settings on the device before installing it.

  • Page 51: Figure 3-9 System Board Cable Connectors

    3-14 Option Installation Cable connector locations are shown in Figure 3-9. Figure 3-9 System Board Cable Connectors Diskette Drive Signal Cable A two-connector diskette drive signal cable comes attached to the system board and to the standard 1.44-MB diskette drive. A three-connector cable is required for adding a second device.

  • Page 52: Figure 3-10 Diskette Drive Signal Cable

    Option Installation 3-15 Figure 3-10 shows a three-connector diskette drive signal cable. Figure 3-10 Diskette Drive Signal Cable IDE Signal Cables Each system comes with a three-connector IDE interface cable attached to the primary IDE connector and the installed hard disk. A second IDE cable connects to the CD-ROM reader and to the secondary IDE connector.

  • Page 53: System Power Cables

    3-16 Option Installation System Power Cables Power cables come from the power supply and are attached to the standard storage devices. System power cables vary in length and provide connector sizes to accommodate a variety of supported storage configurations. Power cable connectors are keyed to fit only in the correct position. Figure 3-12 shows the power cable connectors.

  • Page 54: Device Cabling

    Option Installation 3-17 Device Cabling All storage devices require a power and signal cable connection. Devices shipped with the system are already connected. Cable optional devices as follows. Cabling an IDE Device Connect the IDE signal cable connector to the connector on the IDE device. Take care to prevent bending drive connector pins.

  • Page 55: Cabling A Diskette Drive

    3-18 Option Installation Cabling a Diskette Drive Connect the diskette drive signal cable connector to the signal connector on the diskette drive (see Figure 3-14). Locate an available power connector. Connect the power cable to the power connector on the device. Figure 3-14 Connecting 1.2-MB Diskette Drive Cables...

  • Page 56: Storage Device Installation

    Option Installation 3-19 Storage Device Installation The following subsections describe how to install 3 1/2-inch and 5 1/4-inch devices. The installation procedures include: removing the front panel installing a 3 1/2-inch device installing a 5 1/4-inch device accessing the CD-ROM reader replacing the front panel.

  • Page 57: Installing A 3 1/2-Inch Device

    3-20 Option Installation Installing a 3 1/2-Inch Device Use the following procedure to install a 3 1/2-inch device. Follow the preinstallation instructions that came with the device, such as setting jumpers and switches. Remove the access cover. Remove and label any cables that interfere with installing the device. Remove the front panel (see the previous section).

  • Page 58: Figure 3-17 Inserting The Device

    Option Installation 3-21 Choose the slot for the device being installed (see Figure 3-16). If you are installing the device in an accessible slot, go to step 6. If you are installing the device in the second 3 1/2-inch internal device slot, simply insert the drive into the opening until it is secured by the clips (see Figure 3-17).

  • Page 59: Installing A 5 1/4-Inch Device

    3-22 Option Installation Remove the plastic blank panel from the selected slot by pressing the panel tab and swinging the blank panel out (see Figure 3-18). Figure 3-18 Removing the Blank Panel Remove the metal slot cover by carefully pressing it until it breaks away from the chassis.

  • Page 60: Figure 3-19 Installing The Device

    Option Installation 3-23 Remove the access cover. Remove and label any cables that interfere with installing the device. Remove the front panel. Remove the plastic blank panel. If you are installing a hard drive, keep the panel handy. Remove the metal slot cover by carefully pressing it until it breaks away from the chassis.

  • Page 61: Accessing The Cd-Rom Reader

    3-24 Option Installation NOTE: If you removed the side cover on your minitower or the accessible device cage on your desktop, replace it. Secure the device cage with the screw. If you installed a hard drive in the 5 1/4-inch slot, replace the plastic panel. Replace the front panel.

  • Page 62: Adding External Options

    Option Installation 3-25 ADDING EXTERNAL OPTIONS External connectors on the back of the system unit allow for a variety of industry-standard options. This subsection provides the installation procedures for the most commonly used external options, which are as follows: parallel printer serial devices.

  • Page 63: Figure 3-20 Locating The Parallel Port

    3-26 Option Installation Turn on the printer and the computer. Figure 3-20 Locating the Parallel Port...

  • Page 64: Rs-232C Device Connection

    Option Installation 3-27 RS-232C Device Connection NOTE: Before connecting a serial device to the system, be sure the serial device is set up correctly. Follow the setup instructions that come with the option. Turn off power to the system and to the serial device. Connect one end of the serial cable to the COM1 port on the rear of the computer (see Figure 3-21).

  • Page 65: Maintenance And Troubleshooting

    Section 4 Maintenance and Troubleshooting This section provides information on maintaining and troubleshooting the Direction T-Series computers. Also included in this section are the error beep code descriptions and a procedure for replacing the CMOS battery. MAINTENANCE This subsection contains general information for cleaning and checking the system, keyboard, and monitor.

  • Page 66: Keyboard Cleaning

    Maintenance and Troubleshooting Keyboard Cleaning As necessary, inspect and clean the inside of the keyboard as follows. Remove the eight screws holding the keyboard enclosure together. NOTE: The keyboard and cable together are considered a whole-unit, field-replaceable assembly. Therefore, disassembly of the keyboard is necessary only when cleaning the inside.

  • Page 67: Figure 4-1 Removing The Mouse Ball Cover

    Maintenance and Troubleshooting Turn the ball cover clockwise and remove the cover. Figure 4-1 Removing the Mouse Ball Cover Turn the mouse over and remove the ball. Clean the mouse as follows: Clean the mouse ball with tap water and a mild detergent, then dry it with a lint-free cloth.

  • Page 68: Troubleshooting

    Maintenance and Troubleshooting TROUBLESHOOTING This subsection provides information that helps isolate and repair system malfunctions at the field level. Step-by-step instructions for diagnosing and solving system hardware problems are provided. Technical support is available at 1-888-632-2678. If disassembly is required, see Section 5. Connector pin assignments are given in Appendix B.
  • Page 69 Maintenance and Troubleshooting Table 4-1 Problems and Solutions Problem Symptom Solution Operating system Intermittent beeping at power- 1. Check system configuration (see does not boot on. Computer beeps more than Section 2). once and is unable to complete boot-up. 2. Check all jumper settings and verify that drives are enabled (see appendices and Section 2).
  • Page 70 Maintenance and Troubleshooting Table 4-1 Problems and Solutions Problem Symptom Solution Hard drive Hard drive lamp does not light 1. Check cable connections between malfunction but hard drive can be lamp and system board. accessed. Hard drive controller failure 1. Check that the IDE port and hard message displayed.
  • Page 71 Maintenance and Troubleshooting Table 4-1 Problems and Solutions Problem Symptom Solution Monitor Unable to synchronize display. 1. Adjust the monitor’s synchronization malfunction controls. 2. Check that the monitor’s resolution matches the video setting or the video driver used. 3. Check that the utility is not selecting a refresh rate/resolution that is not supported by the monitor.
  • Page 72 Maintenance and Troubleshooting Table 4-1 Problems and Solutions Problem Symptom Solution CD-ROM System power not on. 1. Turn system power on. malfunction Disc tray does not open. 1. System power not on. Turn system power on. 2. System power failed. Insert about an inch of a straightened paper clip into the emergency eject hole, until the tray opens.
  • Page 73 Maintenance and Troubleshooting Table 4-1 Problems and Solutions Problem Symptom Solution 4. Check the IDE cable. Replace as necessary. 5. Check the power supply. Replace as necessary. 6. Check the system board. Replace as necessary. Communication No or bad data when 1.

  • Page 74: Beep Codes

    4-10 Maintenance and Troubleshooting Beep Codes During boot up, the computer performs a series of POST (Power On Self Test) routines. A beep code may appear when an error is detected. There are fatal and nonfatal errors. The fatal errors include BIOS, CMOS, DMA, RAM, video, and keyboard controller errors. The nonfatal errors include timer tick interrupt, shutdown test, unexpected interrupt in protected mode, gate A20, RAM test, interval timer channel 2 test, clock, serial and parallel port test, math co-processor, system board select, and extended CMOS RAM.

  • Page 75: Cmos Battery Replacement

    Maintenance and Troubleshooting 4-11 CMOS Battery Replacement Remove the 3-volt lithium battery from the system board as follows. Turn off and unplug the system unit and any external options connected to the system. CAUTION: Removing the battery from the system board causes the computer to lose system configuration information.
  • Page 76 4-12 Maintenance and Troubleshooting WARNING: The battery can explode if it is incorrectly replaced or improperly discarded. Use only the same battery or an equivalent type recommended by the manufacturer when replacing the battery. Lithium acts as a catalyst when exposed to water and causes spontaneous combustion on contact.

  • Page 77: Disassembly And Reassembly

    Section 5 Disassembly and Reassembly This section contains step-by-step disassembly procedures for the system unit. Reassembly is the reverse of disassembly. The procedures are supported by simplified disassembly illustrations to facilitate removal. A Phillips-head screwdriver is the only required tool. For complete disassembly of the system unit, follow the disassembly order listed in Table 5-1.

  • Page 78: Disassembly

    Section 5 Disassembly and Reassembly When disassembling the system unit, follow these general rules. Disconnect all peripherals. When handling boards or chips, touch the system unit frame to discharge static. Do not disassemble parts other than those specified in the procedure. All screws are Phillips-head, unless otherwise specified.

  • Page 79: Front Panel Removal

    Section 5 Disassembly and Reassembly Figure 5-1 Removing a Board Front Panel Removal Remove the front panel from the system unit as follows. Locate the two plastic tabs at the front of the chassis. They are indicated by two arrows engraved on the chassis. Press down on the two tabs and press in a third tab at the end of the panel to release the panel (see Figure 5-2).

  • Page 80: Side Panel Removal

    Section 5 Disassembly and Reassembly Pull the panel away from the chassis. Side Panel Removal Remove the side panel from the system unit as follows. Remove the system access cover and front panel as previously described. Locate the two side panel securing tabs at the front of the system. Pull the tabs out and away from the system.

  • Page 81: 1/4-Inch Device Removal

    Section 5 Disassembly and Reassembly Label and unplug the signal and power cables for the diskette drive. Locate the two clips at the front of the system that secure the diskette drive. Figure 5-4 Locating the Two Diskette Drive Clips Squeeze the two clips and pull the diskette drive out of the front of the system.

  • Page 82: Standard 3 1/2-Inch Hard Disk Drive Removal

    Section 5 Disassembly and Reassembly Remove the screws holding the device in the cage (see Figure 5-5). Figure 5-5 Removing the 5 1.4-Inch Device Screws Slide the device out from the front of the system unit. Standard 3 1/2-Inch Hard Disk Drive Removal Remove the standard 3 1/2-inch hard disk drive as follows.

  • Page 83: Optional 3 1/2-Inch Hard Disk Drive Removal

    Section 5 Disassembly and Reassembly Figure 5-6 The 3 1/2-Inch Device Screws Slide the 3 1/2-inch hard disk drive towards the back of the system unit until it is free of the molded plastic. Optional 3 1/2-Inch Hard Disk Drive Removal Remove the optional 3 1/2-inch hard disk drive as follows.

  • Page 84: Fan Assembly Removal

    Section 5 Disassembly and Reassembly Release the two plastic clips holding the drive in the plastic cage and slide the drive up and out of the cage. Figure 5-7 Removing the Drive Fan Assembly Removal Remove the fan assembly per the following steps. Remove the system access cover per Section 3.

  • Page 85: Dimm Module Removal

    Section 5 Disassembly and Reassembly DIMM Module Removal Remove any optional DIMM modules from the system board as follows. Remove the system access cover and any expansion boards as previously described. Press the locking clips at the ends of the socket away from the DIMM memory module (see Figure 5-8).

  • Page 86: Power Supply Removal

    5-10 Section 5 Disassembly and Reassembly Power Supply Removal Remove the power supply as follows. Remove the system access cover as previously described. Label and unplug the power cable attached to the system board. Label and unplug the power cables from all installed devices. At the back of the system unit, remove the two screws securing the power supply to the system unit (see Figure 5-9).

  • Page 87: System Board Removal

    Section 5 Disassembly and Reassembly 5-11 System Board Removal Remove the system board per the following steps. Remove the system access cover, expansion boards, fan assembly, and power supply as previously described: Remove and label all cables connected to the system board. Appendix B provides the connector identifiers and pin assignments for each connector.

  • Page 88: Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List

    5-12 Section 5 Disassembly and Reassembly Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List* Item Description Part Number Keyboard, Ergo 229-00012 CD-ROM reader 730302-02 Ditto 3200 tape drive, backup 320547 Seagate tape drive, CTT800I-S 320545 Iomega ATAPI Zip drive 320703 Zip cartridge 142418 3.2-GB IDE hard disk, Quantum ST Ultra DMA...
  • Page 89 Section 5 Disassembly and Reassembly 5-13 Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List* Item Description Part Number IDE signal cable 233-00026 Microsoft mouse 230-00025 System board 158-056663-000 Active heatsink 146824-01 P200 MMX processor 081698 P233 MMX processor 081778 AC power cable 070135 32-MB DIMM 081779...

  • Page 90: Figure 5-11 Direction T-Series Desktop Illustrated Parts Breakdown

    5-14 Section 5 Disassembly and Reassembly Figure 5-11 Direction T-Series Desktop Illustrated Parts Breakdown* ____________ * This data was prepared April 1998. For an up-to-date listing of spare parts, please call FaxFlash at 1-888-329-0088 (or 1-978-635-6090 outside the U.S.) and order document 42102017.

  • Page 91: Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List

    Section 5 Disassembly and Reassembly 5-15 Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List* Item Description Part Number AC power cable 070135 Microphone 232-00011 Microsoft mouse 230-00025 Keyboard, Egro 229-00012 Diskette drive signal cable 070114 IDE signal cable 233-00026 4-MB WRAM module 060204 PCI video board, GX2 (Reality 334) 060203...
  • Page 92 5-16 Section 5 Disassembly and Reassembly Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List* Item Description Part Number Speaker 158-056684-000 3.2-GB IDE hard disk, Quantum ST Ultra DMA 300668-01 4.3-GB IDE hard disk, Quantim ST Ultra DMA 215-00125 7-GB IDE hard disk, Maxtor 300800 4.3-GB IDE hard disk, Maxtor Ultra DMA CD-ROM reader...

  • Page 93: Figure 5-12 Direction T-Series Minitower Illustrated Parts Breakdown

    Section 5 Disassembly and Reassembly 5-17 Figure 5-12 Direction T-Series Minitower Illustrated Parts Breakdown* ____________ * This data was prepared April 1998. For an up-to-date listing of spare parts, please call FaxFlash at 1-888-329-0088 (or 1-978-635-6090 outside the U.S.) and order document 42102017.

  • Page 94: Table 5-4 Direction T-Series Memory Options

    5-18 Section 5 Disassembly and Reassembly Table 5-4 lists Direction T-Series memory options. Table 5-4 Direction T-Series Memory Options Description Part Number 32-MB DIMM 81779 64-MB DIMM 81794 4-MB WRAM upgrade module 60204 Table 5-5 lists the Direction T-Series documentation. Table 5-5 Direction T-Series Documentation* Description Part Number...

  • Page 95: Appendix A System Specifications

    Appendix A System Specifications This section describes the system specifications. Processor Microprocessor 200-MHz or 233-MHz MMX Clock Rate 200 MHz internally, 66 MHz externally 233 MHz internally, 66 MHz externally Processor Support 32-bit addressing 64-bit data Primary Cache 32 KB of internal write-back cache on processor Secondary Cache 512 KB of pipeline burst cache ZIF Socket...
  • Page 96 System Specifications Read-Only Memory (ROM) Flash ROM 256 KB Video Dynamic RAM (DRAM) Standard video memory 4 MB video memory on the video board Calendar Clock Year/Month/Day/Hour/Minute/Second/.01 Second; maintained by battery backup module Battery Type Real Time Clock (RTC) bttery module Input/Output (I/O) Facilities Integrated Industry-Standard Interfaces Parallel...
  • Page 97 System Specifications Expansion Slots I/O Bus PCI/ISA Six expansion slots Two 8-/16-bit ISA slots Three 32-bit PCI slots One shared ISA/PCI slot Keyboard and Mouse Keyboard Windows 95 enhanced, PS/2-compatible Function Keys 12 keys, capable of up to 48 functions Status Lamps numeric lock, capital lock, and scroll lock keys Numeric Keypad...
  • Page 98 System Specifications Graphics Video Memory 4 MB Support for High Color at 1024 by 768, 800 by 600, 640 by 480, and True Color at 800 by 600 and 640 by 480 Graphics Support (with 4 MB video memory) 1280 by 1024 pixels, 256 colors 1024 by 768 pixels, 256/64,000 colors 800 by 600 pixels, 256/64,000/16.8 million colors 640 by 480 pixels, 16/256/64,000/16.8 million colors...
  • Page 99 System Specifications Sound Retreival System (SRS) for 3D sound effects Complies with General MIDI system level 1 Wavetable synthesis to generate up to 24 voices simultaneously MIDI/Game connector supports MIDI device or gaming device Dimensions System Unit Height 17.1 in. (43.43 cm) Desktop Width 6.5 in.

  • Page 100: Table B-1 System Board Connectors

    Appendix B Connector Pin Assignments This appendix describes the system board connector pin assignments. Table B-1 lists the connectors and sockets on the system board. The table also cross- references the page numbers where the connectors and their pinouts are described. Table B-2 and Table B-3 list each connector by its function, number, and type.

  • Page 101: Figure B-1 System Board Connectors And Slots

    Connector Pin Assignments Figure B-1 System Board Connectors and Slots Figure B-2 System Board External Connectors...

  • Page 102: Table B-2 System Board Internal Connectors

    Connector Pin Assignments Table B-2 System Board Internal Connectors Description Connector Number CD-ROM Audio J2G2 Line-in Audio J2H3 Telephony J2H4 Serial Port 2 J2J1 CPU Fan J6M2 Diskette Drive J7L2 PCI IDE J9H1, J10H1 System Fan J10A1 Power Supply J7K1 Table B-3 System Board Connector Numbers and Types Function Number...

  • Page 103: Processor Socket

    Connector Pin Assignments PROCESSOR SOCKET A-type 7 connector. SERIAL INTERFACE CONNECTORS Pin assignments for the serial interface port connector are listed in Table-B-4. Table-B-4 RS-232C Serial Port Connector Pin Assignments Signal Description DCD# Carrier detect Serial In Receive data Serial Out Transmit data DTR# Data terminal ready...

  • Page 104: Parallel Interface Connector

    Connector Pin Assignments PARALLEL INTERFACE CONNECTOR Parallel interface specifications for this port conform to the IBM-PC interface. Pin assignments for the parallel interface connector are listed in Table B-5. Table B-5 Parallel Port Connector Pin Assignments Signal Signal Strobe# Auto feed# Data bit 0 Fault# Data bit 1...

  • Page 105: Power Supply (Primary

    Connector Pin Assignments POWER SUPPLY (PRIMARY) Voltages from the power supply are input to the system board through the primary power supply connector. Table B-6 shows the connector pin locations and pin assignments. Table B-6 Primary Power Supply Connector Pin Assignments Signal Signal +3.3 V...

  • Page 106: Front Panel

    Connector Pin Assignments FRONT PANEL The front panel connector provides cabling for the buttons and panel LEDs (power and hard disk). The connector pin assignments are given in Table B-8. Table B-8 Front Panel Connector Pin Assignments Signal Description SW_ON# Power On Ground SLEEP...

  • Page 107: Diskette Drive Interface Pin Assignments

    Connector Pin Assignments DISKETTE DRIVE INTERFACE PIN ASSIGNMENTS Table B-9 provides the pin assignments for the diskette drive interface connector. Table B-9 Diskette Drive Connector Pin Assignments Description Description Ground DENSEL Ground Reserved FDEDIN# Ground FDINDX# (Index) Ground FDM00# (Motor enable A) Ground FDDS1# (Drive select B) Ground...

  • Page 108: Ide Interface Connectors

    Connector Pin Assignments IDE INTERFACE CONNECTORS All signal levels in the IDE interface are TTL compatible. A logic 1 is a signal whose voltage level is between 2.0 and 5.0 V. A logic 0 is a signal measuring between 0.00 V and 0.70 V.

  • Page 109: Dimm Sockets

    B-10 Connector Pin Assignments DIMM SOCKETS Table B-11 provides the DIMM type. configuration, and technology by DIMM size. Table B-11 DIMM Socket Pin Assignments Description Description Description Description 127 V DQ32 128 CKE0 DQ33 129 NC DQM2 DQ34 130 DQM6 DQM3 DQ35 131 DQM7...

  • Page 110: Isa Expansion Bus Connector Pin Assignments

    Connector Pin Assignments B-11 ISA EXPANSION BUS CONNECTOR PIN ASSIGNMENTS The expansion slots signals, voltages, and grounds are supplied through the bus connectors. Table B-12 provides the pin assignments for the ISA expansion slots. Table B-12 ISA Expansion Slot Pin Assignments Direction Signal Direction...
  • Page 111 B-12 Connector Pin Assignments Table B-12 ISA Expansion Slot Pin Assignments Direction Signal Direction Signal Input/Output Output Input/Output Ground Input/Output SBHE# Input MEMCS16# (M16#) Input/Output LA23 Input IOCS16# (IO16#) Input/Output LA22 Input IRQ10 Input/Output LA21 Input IRQ11 Input/Output LA20 Input IRQ12 Input/Output LA19...

  • Page 112: Pci Expansion Bus Connector Pin Assignments

    Connector Pin Assignments B-13 PCI EXPANSION BUS CONNECTOR PIN ASSIGNMENTS The expansion slots signals, voltages, and grounds are supplied through the bus connectors. Table B-13 provides the pin assignments for the PCI expansion slots. Table B-13 PCI Expansion Pin Assignments Signal Signal Signal...

  • Page 113: Universal Serial Bus (Usb) Connectors

    B-14 Connector Pin Assignments UNIVERSAL SERIAL BUS (USB) CONNECTORS Table B-14 lists the pin assignments and signal names for the USB connectors. Table B-14 USB Connectors Signal Name Power USBP0# (USBP1#) USBP0 (USBP1) Ground...

  • Page 114: Appendix C System Resources

    Appendix C System Resources The following sections include information about: default system settings viewing system resources jumper settings on the system board. IRQ SETTINGS The following settings are the default IRQ settings: IRQ0 (timer) IRQ1 (keyboard) IRQ2 (programmable interrupt controller) IRQ3 (COM2) IRQ4 (COM1) IRQ5 (LPT2)

  • Page 115: Viewing System Resources

    System Resources VIEWING SYSTEM RESOURCES Some hardware option installations might require system resources such as interrupt request (IRQ) lines, direct memory access (DMA) channels, and input/output (I/O) addresses. See the following procedures to view system resources. Follow these steps to view system resources: From the Windows 95 desktop, click the “My Computer”...

  • Page 116: Figure C-1 System Board Configuration Jumpers

    System Resources Figure C-1 System Board Configuration Jumpers Set the processor and host bus frequency jumpers according to the documentation supplied with the upgrade processor and the following. Change the jumper setting by lifting the plastic block and placing it on the appropriate pins.

  • Page 117: Clearing The System Password

    System Resources CLEARING THE SYSTEM PASSWORD Use the following procedure to clear the current password and to set a new one. NECCSD recommends using needle-nose pliers to move a jumper. Turn off and unplug the system and any external options. Remove the system access cover (see Section 3 “Removing the Access Cover”).
  • Page 118 System Resources Write down the Setup parameters currently set on the system. Turn off the system. Insert the flash diskette in drive A and turn on the system. When the flash upgrade menu appears, choose “Update Flash Memory Area from a file.”...
  • Page 119 Index optional 3 1/2-inch hard drive, 5-7 power supply, 5-10 side panel, 5-4 BIOS update utility system board, 5-11 using, C-4 system unit, 5-2 CD-ROM reader, 1-8 Expansion board Checking hard disk drive parameters, 2-7 removal, 3-8 CMOS battery, 4-11 Expansion board installation, 3-6 replacement, 4-11 External options, 3-25...
  • Page 120 Multimedia components 5 1/4-inch device, 5-5 CD-ROM reader, 1-8 DIMM module, 5-9 expansion board, 5-2 front panel, 5-3 NEC telephone numbers, 4-1 optional 3 1/2-inch hard disk, 5-7 power supply, 5-10 system board, 5-11 Operation, 2-1 Option installation, 3-1 cover removal, 3-3...
  • Page 121 (For United States Use Only) FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 122 If the modem malfunctions, all repairs should be performed by NEC Computer Systems Division or an NECCSD Authorized Service Center. It is the responsibility of users requiring service to report the need for service to NEC Computer Systems Division or to an NECCSD Authorized Service Center. Service can be obtained at:...
  • Page 123 (For Canadian Use Only) This equipment is a Class B digital apparatus which complies with the Radio Interference Regulations, C.R.C., c.1374. Cet appareil numérique de la classe B est conforme àu Règlement sur le brouillage radioélectrique, C.R.C., ch.1374. Canadian Department of Communications Modem Connection Requirements NOTE: The Canadian Department of Communications label identifies certified equipment.
  • Page 124 BATTERY REPLACEMENT A lithium battery in your computer maintains system configuration information. In the event that the battery fails to maintain system configuration information, NECCSD recommends that you replace the battery (see Section 4, “Maintenance and Troubleshooting,” for battery removal procedures). WARNING: There is a danger of explosion if the battery is incorrectly replaced.

This manual is also suitable for:

Direction sp200tDirection sp233t

Table of Contents