NEC Direction SP200T, Direction SP233T User Manual

Page 1

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 design, 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

NEC Computer Systems Division

Packard Bell NEC, Inc.

1414 Massachusetts Avenue

Boxborough, MA 01719-2298

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Contents

Page

Preface......................................................................................................................... ix

Abbreviations............................................................................................................... xi

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

iii

Plug and Play Support.................................................................................... 1-4

CMOS Memory/Real-Time Clock Battery............................................................. 1-5

DMA/IRQ Settings............................................................................................... 1-5

IDE Ports ............................................................................................................. 1-6

I/O Ports ............................................................................................................... 1-6

Sound System....................................................................................................... 1-7

U.S. Robotics Sportster Fax/Modem Board................................................................. 1-7

Diskette Drive.............................................................................................................. 1-7

Hard Disk Drive........................................................................................................... 1-7

CD-ROM Reader......................................................................................................... 1-8

Zip Drive ..................................................................................................................... 1-8

Power Supply .............................................................................................................. 1-8

Power Management..................................................................................................... 1-8

Section 2 Setup Utility

Configuration Information............................................................................................ 2-1

When to Use Setup...................................................................................................... 2-1

How to Start Setup...................................................................................................... 2-2

How to Use Setup ....................................................................................................... 2-3

Menu Bar.............................................................................................................. 2-3

Legend Bar........................................................................................................... 2-4

Selecting a Menu Item .......................................................................................... 2-4

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iv 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.............................................................................. 2-13

DMI Event Logging Submenu............................................................................... 2-13

Security Menu ............................................................................................................. 2-14

Power Menu................................................................................................................ 2-14

Boot Menu .................................................................................................................. 2-15

Hard Drive Submenu............................................................................................. 2-16

Removable Drive Submenu................................................................................... 2-16

Removable Format Submenu................................................................................. 2-16

Exit Menu.................................................................................................................... 2-16

Section 3 Option Installation

General Rules for Installing Options............................................................................. 3-1

Precautions.................................................................................................................. 3-2

Removing the Access Cover......................................................................................... 3-3

Replacing the Access Cover......................................................................................... 3-5

Expansion Boards........................................................................................................ 3-6

Expansion Slot Locations...................................................................................... 3-6

Expansion Board Installation................................................................................. 3-7

Expansion Board Removal.................................................................................... 3-8

DIMM Upgrade........................................................................................................... 3-8

DIMM Removal.................................................................................................... 3-9

DIMM Installation................................................................................................ 3-11

Data Storage Devices................................................................................................... 3-12

Device Slots.......................................................................................................... 3-12

Device Preparation................................................................................................ 3-13

Device Cables....................................................................................................... 3-13

Diskette Drive Signal Cable............................................................................ 3-14

IDE Signal Cables.......................................................................................... 3-15

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Contents v

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..................................................................... 3-24

Replacing the Front Panel............................................................................... 3-24

Adding External Options.............................................................................................. 3-25

Parallel Printer ...................................................................................................... 3-25

RS-232C Device Connection................................................................................. 3-27

Section 4 Maintenance and Troubleshooting

Maintenance ................................................................................................................ 4-1

System Cleaning.................................................................................................... 4-1

Keyboard Cleaning................................................................................................ 4-2

Mouse Cleaning.................................................................................................... 4-2

Troubleshooting........................................................................................................... 4-4

Diagnosing and Solving Problems ......................................................................... 4-4

Beep Codes........................................................................................................... 4-10

CMOS Battery Replacement................................................................................. 4-11

Section 5 Disassembly and Reassembly

Disassembly................................................................................................................. 5-2

System Access Cover............................................................................................ 5-2

Expansion Board Removal.................................................................................... 5-2

Front Panel Removal............................................................................................. 5-3

Side Panel Removal .............................................................................................. 5-4

Device Cage Removal........................................................................................... 5-4

Diskette Drive Removal........................................................................................ 5-4

5 1/4-Inch Device Removal................................................................................... 5-5

Standard 3 1/2-Inch Hard Disk Drive Removal...................................................... 5-6

Optional 3 1/2-Inch Hard Disk Drive Removal...................................................... 5-7

Fan Assembly Removal......................................................................................... 5-8

DIMM Module Removal....................................................................................... 5-9

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vi 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................................................................................. B-6

Front Panel .................................................................................................................. B-7

Diskette Drive Interface Pin Assignments..................................................................... B-8

IDE Interface Connectors ............................................................................................ B-9

DIMM Sockets............................................................................................................ B-10

ISA Expansion Bus Connector Pin Assignments........................................................... B-11

PCI Expansion Bus Connector Pin Assignments........................................................... B-13

Universal Serial Bus (USB) Connectors....................................................................... B-14

Appendix C System Resources

IRQ Settings................................................................................................................ C-1

Viewing System Resources .......................................................................................... C-2

Checking Jumper Settings............................................................................................ C-2

Clearing the System Password...................................................................................... C-4

BIOS Update Utility .................................................................................................... C-4

Figure

Figure 3-1 Loosening the Screw and Pressing the Tabs................................................ 3-3

Figure 3-2 Sliding Off the Cover.................................................................................. 3-4

Figure 3-3 Aligning the Tabs........................................................................................ 3-5

Figure 3-4 Locating Expansion Slots............................................................................ 3-6

Figure 3-5 Removing the Slot Cover............................................................................ 3-7

Figure 3-6 Removing a DIMM..................................................................................... 3-10

Figure 3-7 Installing a DIMM ...................................................................................... 3-11

Figure 3-8 Locating Device Slots................................................................................. 3-12

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Contents vii

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.......................................................................... 3-19

Figure 3-16 Device Slots, Front Panel Removed .......................................................... 3-20

Figure 3-17 Inserting the Device.................................................................................. 3-21

Figure 3-18 Removing the Blank Panel ........................................................................ 3-22

Figure 3-19 Installing the Device.................................................................................. 3-23

Figure 3-20 Locating the Parallel Port.......................................................................... 3-26

Figure 3-21 Locating COM Ports................................................................................. 3-27

Figure 4-1 Removing the Mouse Ball Cover................................................................. 4-3

Figure 4-2 Locating the Battery ................................................................................... 4-11

Figure 5-1 Removing a Board...................................................................................... 5-3

Figure 5-2 Releasing the Front Panel............................................................................ 5-3

Figure 5-3 Locating the Device Cage Screw................................................................. 5-4

Figure 5-4 Locating the Two Diskette Drive Clips ....................................................... 5-5

Figure 5-5 Removing the 5 1.4-Inch Device Screws..................................................... 5-6

Figure 5-6 The 3 1/2-Inch Device Screws .................................................................... 5-7

Figure 5-7 Removing the Drive.................................................................................... 5-8

Figure 5-8 Removing a DIMM..................................................................................... 5-9

Figure 5-9 Removing the Power Supply Screws........................................................... 5-10

Figure 5-10 Removing the System Board Screw........................................................... 5-11

Figure 5-11 Direction T-Series Desktop Illustrated Parts Breakdown........................... 5-14

Figure 5-12 Direction T-Series Minitower Illustrated Parts Breakdown........................ 5-17

Figure B-1 System Board Connectors and Slots........................................................... B-2

Figure B-2 System Board External Connectors ............................................................ B-2

Figure C-1 System Board Configuration Jumpers......................................................... C-3

Table

Table 1-1 System Features........................................................................................... 1-1

Table 1-2 System Memory Map................................................................................... 1-4

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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.................................................................................. 5-1

Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List .............................. 5-12

Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List........................... 5-15

Table 5-4 Direction T-Series Memory Options............................................................. 5-18

Table 5-5 Direction T-Series Documentation ............................................................... 5-18

Table B-1 System Board Connectors............................................................................ B-1

Table B-2 System Board Internal Connectors............................................................... B-3

Table B-3 System Board Connector Numbers and Types ............................................. B-3

Table-B-4 RS-232C Serial Port Connector Pin Assignments ........................................ B-4

Table B-5 Parallel Port Connector Pin Assignments ..................................................... B-5

Table B-6 Primary Power Supply Connector Pin Assignments...................................... B-6

Table B-7 Keyboard and Mouse Connector Pin Assignments ....................................... B-6

Table B-8 Front Panel Connector Pin Assignments....................................................... B-7

Table B-9 Diskette Drive Connector Pin Assignments.................................................. B-8

Table B-10 IDE/PCI Connector Pin Assignments......................................................... B-9

Table B-11 DIMM Socket Pin Assignments.................................................................B-10

Table B-12 ISA Expansion Slot Pin Assignments......................................................... B-11

Table B-13 PCI Expansion Pin Assignments.................................................................B-13

Table B-14 USB Connectors........................................................................................ B-14

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Contents ix

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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.

The manual is organized as follows: Section 1 — Technical Information, provides an overview of the computer features,

hardware design, interface ports, and internal devices. Section 2 — Setup Utility, includes procedures for configuring the system through the

Setup utility program Section 3 — Option Installation, provides installation procedures for adding optional

expansion boards, diskette and hard disk storage devices, system memory, and processor updates.

Section 4 — Maintenance and Troubleshooting, includes recommended maintenance information, lists possible computer problems and their solutions, and has battery replacement procedures.

Section 5 — Disassembly and Reassembly, includes computer disassembly and reassembly procedures.

Appendix A — System Specifications, provides a list of the system specifications including dimensions, weight, environment, safety compliance, power consumption, and memory.

Appendix B — Connector Pin Assignments, provides a list of the system boards’ internal and external connector pin assignments.

Appendix C — System Resources, includes information on system board jumpers, IRQ settings and the BIOS update utility.

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Abbreviations

A ampere AC alternating current AT advanced technology

(IBM PC) BBS Bulletin Board Service BCD binary-coded decimal BCU BIOS Customized Utility BIOS basic input/output system bit binary digit BUU BIOS Upgrade Utility bpi bits per inch bps bits per second C capacitance C centigrade Cache high-speed buffer storage CAM constantly addressable memory CAS column address strobe CD/ROM compact disk-ROM CG character generator CGA Color Graphics Adapter CGB Color Graphics Board CH channel clk clock cm centimeter CMOS complementary metal oxide

semiconductor COM communication CONT contrast CPGA ceramic pin grid array CPU central processing unit DAC digital-to-analog converter DACK DMA acknowledge DC direct current DIP dual in-line package DLAB Divisor Latch Address bit DMA direct memory access

DMAC DMA controller DOS disk operating system DRAM dynamic RAM ECC error checking and correction EDO extended data output EGA Enhanced Graphics Adapter EPROM erasable and programmable

ROM

EVGA Enhanced Video Graphics

Array F Fahrenheit FAX facsimile transmission FCC Federal Communications

Commission FG frame ground FM frequency modulation FP fast page FRU field-replaceable unit GB gigabyte GND ground HEX hexadecimal HGA Hercules Graphics Adapter Hz hertz IC integrated circuit ID identification IDE intelligent device electronics IDTR interrupt descriptor table

register in. inch INTA interrupt acknowledge IPB illustrated parts breakdown IR infrared IRR Interrupt Request register ISA Industry Standard Architecture ISR In Service register I/O input/output

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xii Abbreviations

IPC integrated peripheral controller ips inches per second IRQ interrupt request K kilo (1024) k kilo (1000) KB kilobyte kg kilogram kHz kilohertz lb pound LED light-emitting diode LSB least-significant bit LSI large-scale integration M mega mA milliamps max maximum MB megabyte MDA Monochrome Display Adapter MFM modified frequency modulation MHz megahertz mm millimeter ms millisecond MSB most-significant bit NASC National Authorized Service

Center NC not connected NMI Non-maskable Interrupt ns nanosecond NSRC National Service Response

Center PAL programmable array logic PC personal computer PCB printed circuit board PCI Peripheral Component

Interconnect

PLCC plastic leaded chip carrier PLL phase lock loop p-p peak-to-peak PPI programmable peripheral

interface PROM programmable ROM QFP quad flat pack RAM random-access memory RAMDAC RAM digital-to-analog

converter RAS row address strobe RGB red green blue RGBI red green blue intensity ROM read-only memory rpm revolutions per minute R read RTC real-time clock R/W read/write S slave SCSI Small Computer System

Interface SG signal ground SIMM single inline memory module SPM standard page mode SRS Sound Retrieval System SVGA Super Video Graphics Array SW switch TAC Technical Assistance Center TSC Technical Support Center TTL transistor/transistor logic tpi tracks per inch USB universal serial bus V volt Vac volts, alternating current

PDA personal digital assistant PFP plastic flat package PIO parallel input/output pixel picture element

Vdc volts, direct current VESA video electronics standards

association

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VFC VESA-compliant feature

connector VGA Video Graphics Array VRAM video RAM W watt W write

Abbreviations xiii

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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

Feature Direction SP200T Direction SP233T

System Board Processor

System RAM 32 MB 32 MB or 64 MB Secondary Cache 512 KB, pipeline burst 512 KB, pipeline burst Chipset Intel 82430TX dual PCI Intel 82430TX dual PCI Graphics PCI graphics board Number Nine

Video Memory 4 MB SGRAM 4 MB WRAM Sound Sound Retrieval

Fax/Modem U.S. Robotics, 56 kbps U.S. Robotics, 56 kbps Hard Disk 3.2 GB 3.2 GB, 4.3 GB, or

CD-ROM 24x 24x Zip™ Drive



Pentium 200

Intel MHz MMX

System

Iomega none



(100 MB) or

Intel Pentium 233 MHz MMX

Revolution 3D graphics board

Sound Retrieval System

7 GB

none

Power Supply 200 W 200 W

SYSTEM BOARD

The system board contains most of the components that provide system functions. The following subsections provide a description of these components.

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1-2 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.

High-performance features include:

pipeline 32-bit addressing



64-bit data



512-KB of pipeline burst secondary cache integrated on system board; direct mapped write-back and write-through organization.

The system comes with 32 or 64 MB of main system memory. Two sockets on the system board support up to 256 MB of high-speed memory using industry-standard gold-plated dual in-line memory modules (DIMMs).

The system supports 60-ns Synchronous DRAM (SDRAM) or Extended Data Out (EDO) DRAM.

The system supports the following 60-ns configurations:



1-MB by 64-bit (8-MB DIMM)



2-MB by 64-bit (16-MB DIMM)



4-MB by 64-bit (32-MB DIMM)



8-MB by 64-bit (64-MB DIMM)



16-MB by 64-bit (128-MB DIMM).

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Technical Information 1-3

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.

430TX PCI ISA IDE Xcelerator (PIIX4)  features multifunction PCI to ISA



bridge/USB support.

PCI Local Bus

The 32-bit industry-standard PCI bus is a highly-integrated input/output (I/O) interface that offers the highest performance local bus available for the Pentium processor. The PCI bus supports burst modes that send large chunks of data across the bus, allowing fast displays of high-resolution images.

The high-bandwidth PCI local bus eliminates data bottlenecks found in traditional systems, maintains maximum performance at high clock speeds, and provides a clear upgrade path to future technologies.

The PCI bus contains two embedded PCI devices: the PCI local bus IDE interface and the PCI video/graphics controller. The PCI bus also contains a connector for attaching the bus expansion board.

Expansion Bus

The expansion bus contains two ISA slots, three PCI slots, and one PCI/ISA slot. The PCI ISA IDE Xcelerator chip (430TX) provides the logic that enables the ISA bus functions. With 24-bit memory addressing, a 16-bit data path, and an eight MHz clock, the ISA bus is

designed to support all peripherals compatible with the IBM AT™ standard. For PCI functions, the Xcelerator chip provides 32-bit memory addressing, 32-bit data path, and a 33 MHz clock speed.

BIOS

The BIOS (Basic Input Output System) is stored in the Intel U6520222D Flash EPROM. The Flash EPROM is reprogrammable and allows fast, economical BIOS upgrades.

The system memory map in shown in Table 1-2.

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1-4 Technical Information

Table 1-2 System Memory Map

Memory Address Size Function

100000-10000000 255 M F0000-FFFFF 64 K EC000-EFFFF 16 K

EA000-EBFFF 8 K E9000-E9FFF 4 K E8000-E8FFF 4 K E0000-E7FFF 32 K C8000-DFFFF 96 K

A0000-C7FFF 160 K

9FC00-9FFFF 1 K

80000-9FBFF 127 K 00000-7FFFF 512 K

Extended Memory BIOS Boot Block (available as UMB)

ECSD (Plug and Play configuration and DMI) Reserved for BIOS OEM Logo or Scan User Flash POST BIOS (available as UMB) Available High DOS memory (open to ISA and

PCI bus)

Video memory and BIOS

Extended BIOS Data (moveable by memor managers)

Extended conventional memory Conventional memory

Plug and Play Support

The system comes with Plug and Play BIOS technology. Plug and Play eliminates complicated setup procedures for installing Plug and Play expansion boards.

To add a Plug and Play expansion board, simply power off the system, install the board, and power on the system. There are no jumpers to set and no system resource conflicts to resolve. Plug and Play automatically configures the board for the system. The system also supports non-Plug and Play boards.

Plug and Play is controlled by the Plug and Play BIOS and the system’s operating system. The Plug and Play BIOS is stored in the Intel U6520222D Flash EPROM on the system board.

The Plug and Play BIOS adds several steps to the POST process. During POST, the Plug and Play evaluates the configuration of installed boards and assigns available system resources to the devices. On completion of Plug and Play POST, the operating system checks to see if there are any additional resources required, then assigns available resources to the devices.

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Technical Information 1-5

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.

DMA/IRQ Settings

The system automatically configures interrupts requests (IRQ), direct memory access (DMA) channels, and other parameters when adding PCI boards with minimal user intervention.

Table 1-3 and Table 1-4 list system IRQ and DMA default settings.

Table 1-3 Interrupt Level Assignments

IRQ System Resource

NMI I/O channel check 00 Reserved, internal timer 01 Reserved, keyboard buffer full 02 Reserved, cascade interrupt form slave PIC 03 COM2* 04 COM1* 05 LPT2 (Plug and Play option)/Audio/User available 06 Diskette drive 07 LPT1* 08 Real-time clock 09 User available 10 User available/USB 11 Windows Sound System*/User available 12 Onboard mouse port (if present, else user available) 13 Reserved, math coprocessor 14 Primary IDE (if present, else user available) 15 Secondary IDE (if present, else user available)

* Default, but can be changed.

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1-6 Technical Information

Table 1-4 DMA Assignments

DMA Resource

00 Audio 01 Audio/Parallel port 02 Diskette drive 03 ECP parallel port/Audio 04 Reserved, cascade channel 05 Available 06 Available 07 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. The system board allows the connection of an IDE CD-ROM reader for system configuration flexibility without the addition of a controller.

The fast IDE port features an enhanced IDE interface which supports up to 10 MB per second 32-bit wide data transfers on the high-performance PCI local bus. (Standard IDE supports 2 MB to 3 MB per second on the ISA bus.) The standard hard disk and Zip drive (in some systems) are connected to the fast IDE port (primary channel) for high performance. The CD-ROM reader is attached to the standard IDE port (secondary channel).

I/O Ports

The system board features an enhanced parallel port, two buffered high-speed serial ports, and two Universal Serial Bus (USB) ports.

The enhanced parallel port supports Enhanced Capabilities Port (ECP) and Enhanced Parallel Port (EPP) modes for devices that require ECP or EPP protocols. These protocols allow high-speed bi-directional transfer over a parallel port and increase parallel port functionality by supporting more devices.

The two buffered high-speed serial ports use fast 16550 UARTs which support transfer rates up to 19.2 kilobytes (KB) per second. These ports allow the installation of high-speed serial devices for faster data transfer rates.

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Technical Information 1-7

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.

The combination of the enhanced parallel port, buffered serial ports, and USB ports ensure optimum performance for future peripheral devices and operating systems.

Sound System

The system board features Yamaha OPL® YMF715 audio chip. It integrates a 16-bit audio codec, OPL3 FM synthesis and DAC, 3D enhanced stereo controller, and an interface for MPU401 and a joystick. The chip also provides the following features.

Stereo analog-to-digital and digital-to-analog converters



Analog mixing, anti-aliasing, and reconstruction filters



Support for 16-bit address decode



ADPCM, A-law or µlaw digital audio compression/decompression



Full digital control of all mixer and volume control functions



Sound Blaster™ and Windows Sound System™ compatibility

The system board provides a connector for connecting a Creative Labs AWE32 wavetable board to the Yamaha chip. The board provides true wavetable synthesis and 32 distinct voices for music playback.

U.S. ROBOTICS SPORTSTER FAX/MODEM BOARD

The fax/modem board (in some systems) contains fax and modem capabilities. The board provides modem, fax, full-duplex speakerphone, and voicemail capabilities. The board provides transfer rates of 56-kbps (kilobytes per second) for data and 14.4-Kbps for fax.

DISKETTE DRIVE

The system comes standard with a 1.44-MB high-density diskette drive pre-installed in the 3 1/2-inch accessible device slot (drive A). The drive is connected to the system board via a two-connector cable.

HARD DISK DRIVE

The system supports up to three IDE hard drives, the standard hard drive and two optional hard drives (if a Zip drive does not come standard with the system). The standard hard drive is either a 3.2-GB, 4.3-GB, or 7-GB drive.

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1-8 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.

The reader is connected to the secondary IDE/PCI port on the system board.

ZIP DRIVE

Some systems come with the Iomega Zip 100 ATA drive. The Zip drive provides removable 100-MB data disks and has a data transfer rate up to 1.4 MB per second.

POWER SUPPLY

The 200-watt power supply is mounted inside the system unit. It supplies power to the system board, option boards, diskette drives, hard drives, keyboard, and mouse. A fan inside the power supply provides system ventilation. The power supply has several cables for attaching to the various devices requiring power.

POWER MANAGEMENT

The Advanced Power Management (APM) program, located on the 430TX System Controller (MTXC) chip, reduces system power consumption when there is no activity detected from the keyboard, mouse, diskette drive, CD-ROM reader, or hard disk drive after a pre-defined period of time. As soon as activity is detected, the system resumes where it left off.

There are four levels of reduced power consumption, which may be selected in the CMOS Setup utility. The four levels are Disabled, Minimum Power Savings, Customized, and Maximum Power Savings. Each setting provides a timer in which the system activates the Standby, Suspend, and Fixed Disk power-saving schemes.

Page 21

Section 2

Setup Utility

This section describes the Setup utility program that allows the system configuration information to be viewed and changed.

NOTE:

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.

CONFIGURATION INFORMATION

System configuration information is stored in nonvolatile memory. A nonvolatile memory device retains its data when system power is turned off.

The system ships from the factory with

Nonvolatile memory is a complementary metal-oxide semiconductor (CMOS) chip backed up by a battery on the system board. The battery supplies continuous power to CMOS memory and maintains configuration information when system power is off.

WHEN TO USE SETUP

The Setup utility allows the user to view and set system parameters. Use the Setup utility program:



to set the time and date.



to update or check system parameters when adding or removing expansion options.



to change or set power management features.



to correct a hardware discrepancy when the Power-On Self-Test (POST) displays an error message and a prompt to run Setup.



to check the installation of optional memory by comparing the amount of memory installed with the amount of memory displayed by Setup.



to change certain system operating parameters, such as boot device sequence and keyboard parameters.



to configure system connections for peripherals such as the diskette drive, hard disks, and devices connected to the printer port and serial port.

Page 22

2-2 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.

Setup’s Main Menu window appears similar to the following screen.

NOTE

The screen shown is typical of a system. The actual settings on the Main Menu depend upon the hardware installed in the system.

Page 23

Setup Utility 2-3

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. The menu bar  the line under the Setup title line. The menu bar contains four



top-level menus to set system parameters.



A Main Menu summary window  the area on the left side of the screen. This area provides a summary of Main Menu Setup parameters. Some Main Menu parameters can be set from this window or they can be set from submenus.



The help and navigation window  the area on the right side of the screen. This area provides help information for the Setup option currently selected. The navigation keys provide a summary of commands available for making selections.



The General Help window  a window that appears any time during Setup after pressing F1. This help window provides general information about using Setup.

The following subsections describe how to use the Main Menu window to set system parameters.

Menu Bar

The menu bar at the top of the Main Menu window lists these menus:



Main  Use the Main menu for basic system configuration. For example, select “Main” to set the system time, system date, diskette drive, and hard drive parameters. Use this menu to check memory parameters.



Advanced  Use the Advanced menu to set serial port and printer port addresses and interrupts, and to enable/disable the system’s IDE and diskette drive interfaces.

The Advanced menu also provides submenu items for setting keyboard features, video configurations, and DMI event logging.



Security  Use this menu to set User and Supervisor Passwords and the Unattended Start feature.



Power — Use the Power menu to set power management parameters.



Boot — Use this menu to set boot options.



Exit  Exits the Setup utility with various save or discard options.

Page 24

2-4 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. Table 2-1 describes the legend keys and their alternates.

Table 2-1 Setup Key Functions

Key Function

F1 Provides help for the parameter field being displayed. Esc Exits the menu. ← or → arrow keys ↑ or ↓ arrow keys Enter Executes a command or selects submenu.

Selects next menu. Moves cursor up and down for item selection.

Selecting a Menu Item

To select a menu item, use the up/down arrow keys to move the cursor to the desired field. Then press

Enter

. The Exit Saving Changes command in the Exit Menu saves the values

currently displayed in all the menus.

Displaying a Submenu

To display a submenu, use the up/down arrow keys to move the cursor to the desired submenu. Then press

Enter

. A pointer (a right-pointing triangle) marks all selectable

submenus.

Getting Help

A Field Help window or Item Specific Help window on the right side of each menu displays the help text for the currently selected Setup option. It updates as the cursor moves to each new field.

Pressing F1 on any menu brings up the General Help window that describes the legend keys and their functions.

Esc

Press

to exit the current window.

Page 25

Setup Utility 2-5

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 to select a submenu. Items with lighter text are not available.

Processor Type



This field displays your computer’s processor type.

Processor Speed



This field displays your processor’s speed.



Cache RAM This field displays the size of your system’s L2 (external) cache.

Enter



Total Memory This field displays the total amount of memory installed on your system board.

BIOS Version



This field displays your system’s BIOS version number.



Language This field displays the current default language used by the BIOS. Depending on

the system you purchased, you may choose a different display language from among the options listed below.

 English (US) (default)  Italiano  Français  Deutsche  Español

Page 26

2-6 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. This allows certain drives to spin up before being detected by the BIOS.

Floppy Options Submenu

This submenu can be used to configure your system’s floppy disk drives. To enter the submenu, highlight the Floppy Options field, then press the Enter key. You’ll see the following options:



Diskette A:/B: These fields specify the capacity and physical size of Diskette Drive A and B (if

included). To change these, highlight the field for the drive, press the Enter key and select from the following options:

 Disabled (default for Drive B)  360KB, 5.25 inch  1.2MB, 5.25 inch  720KB, 3.5 inch  1.44/1.25 MB, 3.5 inch (default for Drive A)  2.88 MB, 3.5 inch.

If you add an optional 5.25-inch diskette drive to your system, select Floppy B and change the parameter to 1.2 MB, 5.25 inch.



Floppy Write Protect This option enables or disables write protection for the diskette drive(s). Choose

the desired setting to enable or disable (default) this option.

Page 27

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.

The submenus can be used to auto-configure or manually configure the IDE devices, usually hard drives or CD-ROM drives. Depending on the system you purchased, the available options may include “User,” “Auto” (default), “CD-ROM,” “IDE Removable,” “ATAPI Removable” or “None.”

The standard hard drive (drive C) shipped with the system is configured as “Primary IDE Master.” The standard CD-ROM reader is configured as “Secondary IDE Master.” When the cursor is placed on one of these fields and selected by pressing the Enter key, the IDE Device Submenu appears allowing the drive parameters to be set.

Setup Utility 2-7

NOTE: Jumpers on the IDE device must be set to the master or slave device (see the documentation that comes with the device).

Primary/Secondary IDE Master/Slave (Submenus)

These entries let you check or change the following hard disk drive parameters. They are not available if Auto is selected.



Type This option lets you choose “Auto” to have BIOS detect the type and properties

of the drive or “User definable” where you provide the BIOS with the specific drive properties. “Disabled” is used when there are no IDE drives installed in the system.



Cylinders/Heads/Sectors fields Cylinders — If your device configuration type is set to “Auto,” this field displays

the number of cylinders for your hard drive and cannot be changed. If the Type is set to “User,” you must enter the correct number of cylinders for your hard drive.

Heads — If your device configuration type is set to “Auto,” this field displays the number of heads for your hard drive and cannot be changed. If the Type is set to “User,” you must enter the correct number of heads for your hard drive.

Page 28

2-8 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 — This field displays the maximum capacity of your hard disk drive, a value based on the number of cylinders, heads and sectors.

Multi-Sector Transfers



This option sets the IDE programmed I/O cycles so that multiple sectors are transferred with a single interrupt. Like the Cylinders/Heads/Sectors options discussed above, you cannot access this option if the configuration type is set to “Auto.” If necessary, check the specification for your hard drive to determine the best setting for optimum drive performance. The options include:

 2 Sectors  4 Sectors  8 Sectors  16 Sectors (default)  Disabled.



LBA Mode Control This option specifies the IDE translation mode. LBA causes Logical Block

Addressing to be used in place of Cylinders/Heads/Sectors. You can “Enable” (default) or “Disable” this option.

WARNING: Don’t change the translation mode setting from the option selected when the hard drive was formatted. Changing the option after formatting could result in corrupted data!



Transfer Mode This option determines how fast transfers occur on the IDE interface. The options

include:

 Standard  Fast PIO 1  Fast PIO 2  Fast PIO 3  Fast PIO 4 (default).

Page 29

Setup Utility 2-9

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.

ADVANCED MENU

This section describes the Advanced 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.



Plug & Play O/S This option enables or disables Plug and Play-compatible operating system to

avoid DMA conflicts with ISA boards. Choose “Yes” (default) or “No.”

Reset Configuration Data



This option is used to reset advanced configuration options to default settings without affecting other CMOS changes. The options include “No” (default) or “Yes.”



Memory Cache This option enables or disables memory caching. The options include “Enabled”

(default) or “Disabled.”



Memory Banks 0/1 These fields report the amount of memory detected in the system’s two memory

banks.

Page 30

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 displayed:



Memory Reservation Submenu This option lets you reserve specific upper memory blocks for use by legacy ISA

devices. To do so, highlight this field, then press the (cursor) keys to highlight an upper memory block, then press “Available” (default) or “Reserved” with the cursor keys, then press the key to change the setting.



Memory Hole If this option is enabled (“Disabled” is the default), system RAM is turned off to

allow address space to be available by an option board. You can choose either a 128 KB conventional memory hole (starting at 512 KB), or a 1 MB extended memory hole, beginning at 15 MB.

Enter

key. The following options are

Enter

key. Use the arrow

Enter

. Select

Enter

To return to the Resource Configuration submenu, press the



IRQ Reservation Submenu

Esc

key.

This option lets you reserve specific IRQs (interrupt requests) for use by legacy ISA devices. To do so, highlight this field, then press the arrow (cursor) keys to highlight the specified IRQ, then press “Available” (default) or “Reserved” with the arrow keys, then press

Enter

key. Use the

Enter

. Select

Enter

change the setting.

WARNING

An asterisk symbol appearing next to an option indicates that the selected IRQ is set to conflict with another device,

To return to the Advanced Menu, press the

Esc

key twice.

Page 31

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 options appear:

Serial Port A/Serial Port B



These options let you configure your system’s Serial Port A or Serial Port B. You can choose “Auto” (default), “Enabled” or “Disabled.” The “Auto” setting causes the Setup program to assign the first free COM port (e.g., COM 1 3F8h, IRQ4 or COM2, 2F8h, IRQ3). Note that if you set a specific serial port address, it does not appear in the list of options for the other serial port.

Enter

key on your keyboard. The following

NOTE

If you select the Enabled option, you can see additional options that allow you to specify the Base I/O address and IRQs for the port you are configuring.



Parallel Port This option configures the system’s Parallel Port. Choose “Auto” (default),

“Enabled” or “Disabled.” The “Auto” setting causes the Setup program to assign LPT 1, 378h, IRQ7.

NOTE

If you select the Enabled option, you can see additional options that allow you to specify the Base I/O address and IRQs for the port you are configuring.



Mode (Parallel Port) This option sets the mode for the Parallel Port. The options include “Output

Only” (AT-compatible mode), “Bidirectional” (PS/2-compatible mode), “EPP” (Extended Parallel Port – high speed bidirectional) and “ECP” (Enhanced Capabilities Port – high speed bidirectional).

WARNING

to an option indicates that the selected IRQ is set to conflict with another device,

To return to the Resource Configuration submenu, press the keyboard. Then press

An asterisk symbol appearing next

Esc

a second time to return to the Advanced Menu.

key on your

Page 32

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. To enter the submenu, highlight this field, then press the Enter key. The following options appear:



NumLock This option controls whether the NumLock key on the keyboard is on or off at

boot-up. The choices are “Auto” (default), “On” or “Off.”

Key Click



This feature enables or disables the key click option. Select “Enabled” or “Disabled” (default).



Keyboard Auto-Repeat Rate This feature selects the key repeat rate, the rate at which a key, when pressed and

held, repeats itself. The eight options range from 30 per second (default) to 2 per second.



Keyboard Auto-Repeat Delay This feature selects the delay before key repeats. The four options include from

¼ second to 1 second. The default is ½ second. To return to the Advanced Menu, press the Esc key.

Page 33

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 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. Select “Enabled” or “Disabled” (default).

Video Monitor Type



This option selects the type of VGA Monitor you are using. This setting should be set to either “VGA” or “VGA and TV OUT,” depending on your system configuration.



TV Out Signal Type

Enter

key on your keyboard. The following options

This setting selects the type of TV Out signal to be used and was configured based on the region where you purchased your system. The options include:

 NTSC (North America)  PAL (Europe)  PAL-M (South America).

To return to the Advanced Menu, press the

Esc

key

DMI Event Logging Submenu

This submenu can be used to view and modify DMI Event Logs. To enter the submenu, highlight the DMI Event Logging field, then press the appear:



Event Log Capacity/Event Log Validity These fields indicate whether space is available in the Event Log, and whether the

contents of the log are valid.



View DMI Event Log

Enter

key. The following options

To view the DMI Event Log, highlight this option and press the there are no event logs stored, the log displays No unread events.

Enter

key. If

Page 34

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. If necessary, press the Enter key to access the Confirmation dialog box and confirm your preference.

To return to the Advanced Menu, press the Esc key. Then press the right arrow (cursor) key to move to the Security Menu.

SECURITY MENU

The Security Menu can be used to set a user password and/or a supervisor password. A User Password controls access to the system and Setup Utility program at boot up. If the

User Password feature has been enabled, you need to enter your User password correctly whenever you boot the system before you can use it.

A Supervisor Password controls access to the BIOS and Setup Utility program. If the Supervisor Password feature has been enabled, a Supervisor password must be entered correctly before all options in the Setup Utility program are available (for example, to disable password protection).

Press the right arrow (cursor) key to move to the Power Menu.

POWER MENU

The Power Menu can be used to enable or disable the system’s power management features. When the power management option is enabled, the following options appear in the Power Menu:



Inactivity Timer The Inactivity Timer lets you set the delay time for activation of power

management. Standby mode powers down various devices in the system until you resume using it. You can select from “Off,” “1,” “2,” “4,” “6,” “8,” “12” or “16 minutes.” A setting of 1 minute achieves maximum power savings, while a setting of 16 minutes allows maximum performance.

Page 35

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.

BOOT MENU

The Boot Menu can be used to adjust the system’s boot features. The Boot Menu features the following options:



Restore on AC/Power Loss This option specifies how the system responds to power restoration after an

unexpected power loss. The options are “Stay Off” (default) which keeps the power off until the system’s power button is pressed, “Power On” which restores the system’s power, and “Last State” which restores the previous power state.



On Modem Ring This option sets whether or not the modem powers up on boot or remains off

until manually activated. The options are “Stay Off” and “Power On” (default).



Scan User Flash Area This feature enables or disables automatic scanning of the user flash area on

bootup. “Disabled” is the default.



First/Second/Third/Fourth Boot Device You can select the sequence of boot devices by type. Pressing your keyboard’s +

(plus) or – (minus) key allows you to select the order. For maximum system accessibility, Removable Device should always be set as the First Boot Device.

Page 36

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.

To see a list of available drives, highlight this field and press the

Enter

key. You can select the boot device by pressing your keyboard’s + or – key. To exit from the Hard Drive submenu, press the

Esc

key.

Removable Drive Submenu

This submenu lists any available removable drives (if included). The operating system assigns drive letters to these devices in the order listed. You can change the sequence (and drive lettering) by highlighting this field and pressing the

Enter

key. Then press your keyboard’s + or – key to move a device up or down the list. To exit from the Removable Drive submenu, press the

Esc

key.

Removable Format Submenu

This submenu selects the media format of any available removable drives (if included). To change the format, highlight this field and press the Format submenu, make sure the Hard Drive option is highlighted, then press the Select either “Removable” or “Hard Drive” by pressing your keyboard’s + or – key, then press the

Enter

key. To exit from the Removable Format submenu, press the

Press the right arrow (cursor) key to move to the Exit Menu.

Enter

key. From the Removable

Enter

Esc

key.

EXIT MENU

The Exit Menu allows you to choose how to exit the Setup program. Press the arrow (cursor) keys to select the desired option, then press the use the arrow key to select another one).



Exit Saving Changes This option exits the Setup program and saves your changes to the BIOS and

reboots the system.



Exit Discarding Changes This option exits the Setup program without saving your changes to the BIOS and

reboots the system.

Enter

key to make your choice (or

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.

NOTE: If your system’s CMOS fails, the BIOS will load custom default settings (if you’ve saved them) or factory default settings

Finally, press the Enter key again to confirm and exit the Setup program.

Page 38

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.



Turn off system power and unplug the power cable.



Turn off and disconnect all peripherals.



When handling boards or chips, touch the metal of the system unit to discharge static.



Do not disassemble parts other than those specified in the procedure.



All screws are Phillips-head, unless otherwise specified.



Label any removed connectors. Note where the connector goes and in what position it was installed.

Page 39

3-2 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:

turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged.

Static electricity and improper installation procedures can damage computer components. Protect computer components by following these safety instructions.

CAUTION:

computer components. Discharge static electricity by touching a metal object before removing the access cover.

Before removing the access cover,

Electrostatic discharge can damage



Avoid carpets in cool, dry areas. Leave an option, such as a board or chip, in its anti-static packaging until ready to install it.

Dissipate static electricity before handling any system components (boards, chips,



etc.) by touching a grounded metal object, such as the system’s unpainted metal chassis.

If possible, use anti-static devices, such as wrist straps and floor mats.



Always hold a chip or board by its edges. Avoid touching the components on the chip or board.



Take care when connecting or disconnecting cables. A damaged cable can cause a short in the electrical circuit. Misaligned connector pins can cause damage to system components at power-on.

When installing a cable, route the cable so it is not pinched by other components and is out of the path of the system unit cover. Prevent damage to the connectors by aligning connector pins before you connect the cable.



When disconnecting a cable, always pull on the cable connector or strain-relief loop, not on the cable.

Page 40

Option Installation 3-3

REMOVING THE ACCESS COVER

The following subsections describe how to remove the access cover from the system.

WARNING:

turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged.

Turn off the computer.

Disconnect the keyboard, mouse, monitor, and any other external options (such as a printer) from the rear of the computer.

Label all cables to make reinstallation easier.

CAUTION:

computer components. Discharge static electricity by touching a metal object before you remove the system access cover.

Before removing the access cover,

Electrostatic discharge can damage

Loosen the thumb screw at the rear of the system by turning it counterclockwise. If you installed a lock on the back of the system, unlock the lock and remove it.

Press in the release tabs located at the sides of the access cover.

Figure 3-1 Loosening the Screw and Pressing the Tabs

Page 41

3-4 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).

Figure 3-2 Sliding Off the Cover

Lift it away from the system.

Page 42

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.

Option Installation 3-5

Figure 3-3 Aligning the Tabs

Slide the access cover forward to meet the front panel.

Tighten the thumb screw.

NOTE:

The cover fits tightly. If it does not slide all the way to the front panel, place one hand on the front of the unit while you slide the cover forward from the rear.

Reconnect all external peripherals.

Plug in power cables.

Page 43

3-6 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. Plug and Play allows the installation of a board in an expansion slot without changing the hardware settings. There are no system resource conflicts to resolve. Plug and Play automatically configures the board for the system.

Industry-standard 8-bit and 16-bit ISA, and 32-bit PCI expansion boards are supported in the system unit. ISA expansion boards can be Plug and Play or non-Plug and Play boards.

PCI expansion boards run at one half the system host’s bus speed. The PCI bus handles 32 bits of data at a time, being wider as well as faster than the standard ISA bus. PCI boards can send and receive data much faster, thereby boosting system performance.

Expansion Slot Locations

Your system has six expansion slots:



two ISA slots



three PCI slots



one set of shared ISA and PCI slots.

As illustrated below, the option board slot configuration accommodates the following devices.

Figure 3-4 Locating Expansion Slots

Page 44

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.

Option Installation 3-7

Figure 3-5 Removing the Slot Cover

Save the screw for installing the expansion board. Be sure to save the slot cover for future use.

CAUTION:

A slot cover can damage the system board or any option board if it falls into the system. Take care to keep the slot cover from falling when removing the screw.

If the slot cover does fall into the unit, remove it before replacing the cover.

Hold the board by its edges and insert it into the expansion slot.

Press the board firmly into the expansion slot connector. Gently rock the board from side-to-side to seat it into the connector.

Insert the screw removed earlier to secure the expansion board to the support bracket.

Attach any cables required by the expansion board.

Page 45

3-8 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. Replace the access cover.

DIMM UPGRADE

Your system comes factory-installed with 32 MB or 64 MB of main system memory, as two 168-pin sockets on the system board for Dual In-line Memory Modules (DIMMs).

You may install memory in one or two sockets and the size and speed may vary between sockets. Single-and double-sided DIMMs are supported.

Depending on product upgrade availability, your system memory can be upgraded to a total of 256 MB. When upgrading your system memory, note the following conditions:



Be sure to use 168-pin 3.3V DIMMs with gold-plated contacts. Bus speed of 66 MHz only is supported.



Non-Error Correcting and Checking (64-bit) DIMMs are supported.

NOTE:

Although memory size and type may vary, the SDRAM DIMMs must meet the Intel 4-clock, 66-MHz, unbuffered SDRAM DIMM specification for 64-bit SDRAM.

Use the following procedure to:



Check the memory installed in the system



Determine the DIMM configuration needed to increase memory



Identify DIMM sockets.

NOTE:

sockets, label and disconnect them. If any boards block access to the sockets, remove them.

Locate the two DIMM sockets, J5F2 – Bank 0 and J5G1 – Bank 1. See

Appendix D to identify the sockets.

If any cables block access to the DIMM

Page 46

Option Installation 3-9

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. memory) 1 M x 64 (8 MB) 1 M x 64 (8 MB) 16 MB 2 M x 64 (16 MB) 2 M x 64 (16 MB) 32 MB 2 M x 64 (16 MB) 4 M x 64 (32 MB) 48 MB 4 M x 64 (32 MB) 4 M x 64 (32 MB) 64 MB 8 M x 64 (64 MB) 1 M x 64 (8 MB) 72 MB 2 M x 64 (16 MB) 8 M x 64 (64 MB) 80 MB 4 M x 64 (32 MB) 8 M x 64 (64 MB) 96 MB 2 M x 64 (16 MB) 16 M x 64 (128 MB) 144 MB 16 M x 64 (128 MB) 2 M x 64 (16 MB) 144 MB 16 M x 64 (128 MB) 4 M x 64 (32 MB) 160 MB 16 M x 64 (128 MB) 8 M x 64 (64 MB) 192 MB 16 M x 64 (128 MB) 16 M x 64 (128 MB) 256 MB

DIMM Removal

Use the following procedure to remove a DIMM.

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.

Figure 3-6 Removing a DIMM

Store the DIMM in an antistatic bag (available at electronic supply stores) or a

cardboard box. Repeat steps 2 through 4 if you need to remove another DIMM.

Page 48

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:

static discharge by touching the system’s metal chassis.

To install a DIMM, align the module with an empty socket. Make sure that the notches on the DIMM line up with the keys in the sockets.

Before installing a DIMM, reduce

Option Installation 3-11

Insert the DIMM into the socket. Close the plastic clips at both ends of the socket.

Figure 3-7 Installing a DIMM

Replace any cables or boards that may have been removed.

Replace the access cover.

Page 49

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  two accessible 5.25-inch device slots (one contains the standard CD-ROM

reader)

 two 3.5-inch device slots; the lower 3.5-inch slot is not accessible on the

desktop model.

Figure 3-8 shows the device slot locations in the system.

Figure 3-8 Locating Device Slots

Page 50

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. See the documentation that comes with the device for jumper setting information.

 An IDE device, such as an IDE hard disk or IDE

CD-ROM reader, must be set correctly as the first (master) or second (slave) device on the IDE channel.

 The standard IDE hard disk is set as the master device on the primary IDE

connector. The standard CD-ROM reader is the master device on the secondary IDE connector.



Installation hardware — check to be certain you have the screws necessary to secure the drive in an accessible drive slot.

Device Cables

The cables used for installation of optional storage devices include:

diskette drive signal cable



IDE signal cables



system power cables.

The addition of a diskette drive might require the replacement of the existing diskette drive cable. The addition of an IDE device does not require the replacement of the existing IDE cable. The existing IDE cables each supports two devices.

Page 51

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.

The colored edge of the cable goes to pin 1 on the cable connector. Align the red edge of the cable with pin 1 (the notched end) on the drive connector.

Page 52

Figure 3-10 shows a three-connector diskette drive signal cable.

Figure 3-10 Diskette Drive Signal Cable

Option Installation 3-15

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. In some systems, a Zip drive also comes attached to the primary IDE cable.

Figure 3-11 shows a typical three-connector IDE cable. If the IDE cable is not keyed with a connector tab, align the colored edge of the cable with the pin 1 side of the drive connector.

Figure 3-11 IDE Signal Cable

Page 53

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.

Figure 3-12 Power Cable Connectors

Page 54

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. Align the IDE cable connector

as shown in Figure 3-13.

Locate an available power connector coming from the power supply.

Connect the appropriate power cable to the power connector on the IDE device.

Figure 3-13 Connecting IDE Device Cables

If installing an IDE CD-ROM reader, also connect the audio cable (see the instructions that come with the reader).

Page 55

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

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.



Removing the Front Panel

Use the following procedure to remove the front panel.

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 3-15).

Figure 3-15 Releasing the Front Panel

Pull the panel away from the chassis.

Page 57

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).

Figure 3-16 Device Slots, Front Panel Removed

Page 58

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). Secure the drive with two screws inserted into the front of the system.

Figure 3-17 Inserting the Device

Page 59

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. Be careful of sharp edges! Slide the device into the slot and secure the device.

Connect the device cables.

Replace the front panel.

10.

Replace the access cover.

11.

Installing a 5 1/4-Inch Device

Install an accessible device into the device slot as follows.

Follow the preinstallation instructions that came with the device, such as setting

jumpers and switches.

NOTE:

If your 5 1/4-inch device comes with drive rails, do not attach them. Remove any rails attached. See the documentation that comes with the device.

Page 60

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. Be careful of sharp edges. From the front of the system, slide the device, connector end first, into the

device slot.

NOTE:

To easily access device connectors for cabling, do not insert a 5 1/4-inch device all the way into the slot.

Connect the device cables (see “Cabling Storage Devices”).

Align the holes in the device with the holes in the chassis.

Secure the device with the screws that came with the device (see Figure 3-19).

10.

Figure 3-19 Installing the Device

Page 61

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.

11.

Replace the front panel.

12.

Replace the access cover.

13.

Accessing the CD-ROM Reader

If you need to access the CD-ROM reader, you need to remove the side cover on the minitower or the accessible device cage on the desktop.

For the minitower, pull out the side panel securing tabs and slide the panel towards the rear of the system. If it is tight, insert a screwdriver into the slots between the cover and the front panel and carefully pry it loose.

For the desktop, use the following procedure to remove the accessible device cage.

Locate the screw on the front of the system between the 3.5-inch blank panel and

diskette drive. Remove the screw. Slide the cage towards the front of the system and lift it out of the unit.

Replacing the Front Panel

To replace the front panel, follow this procedure.

Align the front panel’s six tabs with their corresponding slots on the system (three

of the tabs have holes, the others have prongs). Press the front panel squarely into position until the tabs lock the panel in place.

Replace the access cover.

After securing your system, reboot it and run the Setup program to set the new

configuration.

Page 62

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.



For other external devices, see the instructions that come with the option.

Parallel Printer

NOTE:

system, be sure the printer is set up correctly. Follow the setup instructions that come with the printer.

Before connecting a printer to the

Connect a parallel printer to the system as follows.

Turn off power to the system and printer.

Connect the printer cable to the printer port on the rear of the system unit (see Figure 3-20).

Secure the cable with the screws provided.

Connect the other end to the printer.

Page 63

3-26 Option Installation

Turn on the printer and the computer.

Figure 3-20 Locating the Parallel Port

Page 64

RS-232C Device Connection

NOTE:

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).

Secure the cable with the screws provided.

Connect the other end to the serial device.

Turn on the serial device and the computer.

Before connecting a serial device to the

Option Installation 3-27

Figure 3-21 Locating COM Ports

Page 65

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.

The system, keyboard, and monitor require cleaning and checking at least once a year, and more often if operating in a dusty environment. No other scheduled maintenance or lubrication is required.

WARNING:

performing any maintenance. Voltage is present inside the system and monitor even after the power button is off. All voltage is removed only when the power cord is unplugged.

Unplug all power cords before

System Cleaning

Use the following procedure for cleaning the system.

Power off the system and unplug all power cables.

Periodically wipe the outside of the system, keyboard, mouse, and monitor with a soft, clean cloth. Remove stains with a mild detergent. Do not use solvents or strong, abrasive cleaners on any part of the system.

Clean the monitor screen with a commercial monitor screen cleaning kit. Or use a glass cleaner, then wipe with a clean lint-free cloth.

Local distributors and dealers may sell diskette drive head cleaning kits. These kits contain special diskettes and cleaning solution. Do not use the abrasive head cleaning kits (kits without cleaning solution).

Insert the diskette immediately after powering on the system, before the disk boot-up. Allow the diskette drive heads to clean for about 30 seconds.

Page 66

4-2 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:

considered a whole-unit, field-replaceable assembly. Therefore, disassembly of the keyboard is necessary only when cleaning the inside.

Separate the two halves of the enclosure. Clean the enclosure and keys with a damp cloth. A small, soft-bristle brush may be used to clean between the keys. Do not wet or dampen the keyboard’s printed circuit board (PCB). If the PCB accidentally gets wet, thoroughly dry it before reattaching the keyboard to the system unit.

The keyboard and cable together are

Mouse Cleaning

Under normal conditions, the mouse has a self-cleaning mechanism that prevents a buildup of dust or lint around the mouse ball and tracking mechanism. Periodically, however, the mouse ball must be cleaned. Use the following procedure to clean the mouse.

Unplug the mouse from the system.

Turn the mouse upside down and locate the mouse ball cover (see Figure 4-1).

Page 67

Maintenance and Troubleshooting 4-3

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.



Remove any dust and lint from the mouse socket.

Replace the mouse ball in its socket.

Replace the ball cover and turn it counterclockwise until it locks in place.

Page 68

4-4 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. Jumper settings are given in the appendices.

Diagnosing and Solving Problems

One beep indicates that the system has completed its power-on self-test (POST) test. If intermittent beeping occurs, power off the system and try again. If the beeping persists, see Table 4-1 and Table 4-2. The following table summarizes problems that may develop during system operation and lists (in sequential order) suggested corrective actions.

Table 4-1 Problems and Solutions

Problem Symptom Solution

No power Power lamp on computer

status panel will not light.

Power suppl malfunction

Front panel lamps out, diskette

of the following conditions

could occur:

and/or hard drives do not spin, monitor blank, interface ports not workin lamp out and/or cannot input from keyboard.

, and keyboard

1. Check that the power cord is plugged into the AC connector on the computer.

Check that the other end of the cord is

ed into a live properly grounded

plu AC power outlet.

2. Check cable connections between the power supply and system board.

3. Systematically eliminate possible shorted PCBs b expansion boards.

4. Check the +5 and +12 power supply es (see Appendix B, “Connector

volta Pin Assi with the system board installed.

5. Replace the power supply.

6. Replace the system board.

1. Perform steps 1 through 4 listed in

this table under No Power.

2. Check power supply voltages.

Volta load on them (s See Appendix B for connector pin assi supply specifications.

nments”). Measure voltages

es should be measured with a

nments and Section 1 for power

removing cables and

stem board plugged in).

3. Replace the power supply.

Page 69

Maintenance and Troubleshooting 4-5

Table 4-1 Problems and Solutions

Problem Symptom Solution

Operating system does not boot

“Invalid Configuration”

Computer halts during loadin

Intermittent beeping at poweron. Computer beeps more than once and is unable to complete boot-up.

message displayed.

sequence.

1. Check system configuration (see

Section 2).

2. Check all jumper settings and verify

that drives are enabled (see appendices and Section 2).

3. Reseat DIMMs and option boards in

their connectors. Inspect s for dropped objects.

4. Remove option boards and reboot.

5. Replace system board.

1. Press

parameters.

2. Replace the CMOS battery if the date

and time must be set each time the computer is powered on.

1. Power the computer off. Check for

proper jumper settin appendices), then power on the computer.

to run Setup and correct the

stem board

s (see

Diskette drive does not work

Lamp on drive panel does not light when diskette is loaded.

2. Check condition of selected bootload

device (diskette or hard disk) for bad boot track or incorrect OS files.

3. Try booting OS from diskette or

recopy OS files onto hard disk.

4. Verify correct hard disk is selected.

1. Check power and signal cable

connections between diskette drive, system board, and power supply.

2. Check diskette drive jumpers.

3. Check diskette cable. Replace as

necessary.

4. Check power supply.

. Replace diskette drive.

6. Replace system board.

Page 70

4-6 Maintenance and Troubleshooting

Table 4-1 Problems and Solutions

Problem Symptom Solution

Hard drive malfunction

Hard drive controller failure

Cannot access hard disk.

Memor malfunction

Hard drive lamp does not light but hard drive can be accessed.

message displayed.

Total memory not recognized.

1. Check cable connections between

lamp and system board.

1. Check that the IDE port and hard

drives are enabled in Setup.

1. Check signal/power connections

between hard disk, PCB, power supply.

2. Check hard drive jumper settings.

3. Check power supply.

4. Check hard disk cable and hard disk.

Replace as necessary.

5. Replace system board (or hard disk

controller PCB if the s controller is not used).

1. Reseat DIMMs.

2. Systematically swap DIMMs.

3. Check to see if the DIMM

configuration is valid (see Section 3).

stem board

Fax/data/ speakerphone board malfunction

Keyboard or mouse malfunction

No output from board.

Monitor has prompt, but cannot input data.

4. Replace DIMMs.

5. Replace system board.

Check interrupts (see Appendix C).

Check DMA channels (see Section 1).

1. Check that keyboard/mouse is

plugged in.

2. Check password (see Section 2).

3. Disable password (see Appendix C).

4. Replace keyboard (or mouse).

5. Replace system board.

Page 71

Maintenance and Troubleshooting 4-7

Table 4-1 Problems and Solutions

Problem Symptom Solution

Monitor malfunction

Wavy display.

Blank display.

Unable to synchronize display.

1. Adjust the monitor’s synchronization

controls.

2. Check that the monitor’s resolution

matches the video settin driver used.

3. Check that the utility is not selecting a

refresh rate/resolution that is not supported by the monitor.

4. Check that the driver used matches

the capabilities of the built-in video controller and DRAM.

1. Check that the computer and monitor

are not near motors or electric fields.

1. Press any key or move the mouse to

ensure power mana blanked the display.

. Check that the monitor power switch

is on.

3. Check that the monitor cable is

attached to the video connector at the back of the system.

or the video

ement has not

4. Check cable connections between the

AC power supply and monitor.

5. Adjust brightness and contrast

controls on the monitor.

6. Check cable connections between the

monitor connector and the s board.

7. Replace system board.

8. Replace monitor.

stem

Page 72

4-8 Maintenance and Troubleshooting

Table 4-1 Problems and Solutions

Problem Symptom Solution

CD-ROM malfunction

Disc tray does not open.

Cannot access CD-ROM

System power not on.

reader.

. Turn system power on.

1. System power not on. Turn system

power on.

2. System power failed. Insert about an

inch of a strai

ency eject hole, until the tra

emer opens.

. Check that the CD-ROM driver

software is loaded and not corrupted.

Check signal and power connections between the reader, s power supply.

Check the master/slave jumper settings.

Check the IDE cable. Replace as necessary.

Check the power supply. Replace as necessary.

Check the system board. Replace as necessary.

htened paper clip into the

stem board, and

No sound from CDs.

Zip drive malfunction

Cannot access Zip drive.

System power not on

Check that speaker power is on and volume is adjusted.

Check audio software settings.

Check the CD disc.

Check the CD-ROM drive audio cable. Replace as necessary.

Replace the CD-ROM reader.

Replace the system board.

Turn system power on.

. Check that the Zip drive driver

software is loaded and not corrupted.

Check signal and power connections between the Zip drive, s and power supply.

Check the master/slave jumper settings.

stem board,

Page 73

Maintenance and Troubleshooting 4-9

Table 4-1 Problems and Solutions

Problem Symptom Solution

Communication error

No or bad data when communicating.

Check the IDE cable. Replace as necessary.

Check the power supply. Replace as necessary.

Check the system board. Replace as necessary.

. Check cable connections between

system board and device.

. Check that the interface port is

selected.

. Test or replace the device and interface cable (see the device documentation for troubleshooting).

. Replace the system board.

Page 74

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.

The following table provides a description of the beep codes.

Table 4-2 Beep Code Descriptions

Beeps Error Message Description

1 Refresh Failure The memory refresh circuitry on the system

board is faulty. 2 Parity Error Parity error in the first 64 KB of memory. 3 Base 64 KB Memory Failure Memory failure in the first 64 KB. 4 Timer Not Operational Memory failure in the first 64 KB of

memor

not functioning. 5 Processor Error The CPU on the system board generated

an error. 6 8042 - Gate A20 Failure The keyboard controller (8042) may be

bad. The BIOS cannot switch to protected

mode. 7 Processor Exception Interrupt

Error

8 Display Memory Read/Write Error The system graphics adapter is either

10 CMOS Shutdown Register

ROM Checksum Error ROM checksum value does not match the

Read/Write Error

The CPU generated an exception interrupt.

missin

a fatal error.

value encoded in BIOS.

The shutdown register for CMOS RAM

failed.

, or Timer 1 on the system board is

or its memory is faulty. This is not

Page 75

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:

system board causes the computer to lose system configuration information. If possible, run Setup and record the system configuration settings before removing the battery. Use that information to restore the system after replacing the battery.

Remove the system access cover.

Removing the battery from the

Locate the battery and its socket on the system board (see Figure 4-2).

Figure 4-2 Locating the Battery

Use fingers to carefully pull the battery up until it is clear to slide the battery out of the socket.

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. Discard used batteries according to the manufacturer’s instructions.

With the positive (+) side facing up, press the new battery into the socket.

Replace the system access cover.

Connect external peripherals and power cables.

Run Setup to reconfigure system parameters (see Section 2).

Page 77

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. To reassemble, follow the table and procedures in reverse order.

Individual removal procedures do not require the total disassembly of the computer. Each of the following subsections lists the parts that must be removed before beginning the removal procedure.

Table 5-1 Disassembly Sequence

Sequence Part See Page

1 System access cover 5-2 2 Expansion board(s) 5-2 3 Front panel 5-3 4 Side panel 5-4 5 Device cage 5-4 6 Diskette drive 5-4 7 5 1/4-inch device 5-5 8 Standard 3 1/2-inch hard disk drive 5-6 9 Optional 3 1/2-inch hard disk drive 5-7 10 Fan assembly 5-8 11 DIMM module 5-9 12 Power supply 5-10 13 System board 5-11

Page 78

5-2 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. Label all removed connectors. Note where the connector goes and in what



position it was installed.

On completion of any reassembly, perform a power-on self test (see Section 4, “Maintenance and Troubleshooting”). If a fault occurs, verify that the reassembly was performed correctly.

CAUTION: When handling boards or chips, ground yourself to release static.

DISASSEMBLY

Use the following procedures to disassemble the system unit.

NOTE: Unplug the power cord before disassembling the system unit. Voltage is present inside the system unit even after the power is off. All voltage is removed only when the power cord is unplugged.

System Access Cover

To remove and replace the system access cover, see Section 3.

Expansion Board Removal

Remove any installed expansion board(s) per the following steps.

Remove the system access cover as described in Section 3.

Disconnect any cables leading from the expansion board(s).

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 (see Figure 5-1).

Page 79

Section 5 Disassembly and Reassembly 5-3

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).

Figure 5-2 Releasing the Front Panel

Page 80

5-4 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.

Slide the side panel towards the rear of the unit and away from the unit.

Device Cage Removal

Remove the device cage from the system unit as follows.

Label and disconnect any cables connected to devices in the device cage.

Locate the screw on the front of the system between the 3.5-inch blank panel and

diskette drive (see Figure 5-3). Remove the screw.

Figure 5-3 Locating the Device Cage Screw

Slide the cage towards the front of the system and lift it out of the unit.

Diskette Drive Removal

Remove the standard diskette drive from the system unit as follows.

Remove the system access cover and front panel as previously described.

Page 81

Section 5 Disassembly and Reassembly 5-5

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.

5 1/4-Inch Device Removal

Remove an optional 5 1/4-inch device from the system unit as follows.

Remove the system access cover, front panel, and the device cage as previously

described. Label and unplug the signal and power cables from the optional device in the

5 1/4-inch device cage. Unplug the audio cable from an optional CD ROM reader.

Page 82

5-6 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.

Remove the system access cover and front panel as previously described.

Label and unplug the hard disk drive power and signal cables from the hard disk

drive. Remove the two screws securing the 3 1/2-inch hard disk drive to the front of the

system unit (see Figure 5-6).

Page 83

Section 5 Disassembly and Reassembly 5-7

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.

Remove the system access cover and front panel as previously described.

Unplug the hard disk drive power and signal cables from the optional hard disk

drive. Locate the two screws securing the 3 1/2-inch hard disk drive in the molded

plastic cage at the front of the system. Remove the screws.

Page 84

5-8 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.

At the rear of the system unit, press in on the two locking tabs securing the

assembly to the chassis. Remove the fan by pulling it outward away from the system board.

Page 85

Section 5 Disassembly and Reassembly 5-9

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).

Gently rock the module while pulling it up from the socket.

Figure 5-8 Removing a DIMM

When installing a DIMM module, align the notches on the module with the keys in the memory socket, insert the module, and press in the plastic locking clips.

Page 86

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).

Figure 5-9 Removing the Power Supply Screws

Pull the power supply out of the system unit.

Page 87

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.

Locate and remove the one screw at the rear of the unit that secures the system board to the system unit (see Figure 5-10).

Figure 5-10 Removing the System Board Screw

Slide the system board towards the front of the unit until is is clear of the metal shielding and the alignment clips.

Lift the board out of the system at an angle.

If replacing the system board, remove any installed DIMMs from the board. Reinstall the DIMMs on the new board.

ILLUSTRATED PARTS BREAKDOWN

This section contains the illustrated parts breakdown (IPB) and NECCSD part numbers for the Direction T-Series desktop and minitower computers.

Table 5-2 lists the field-replaceable parts for the desktop and Figure 5-11 provides the illustrated parts breakdown. Table 5-3 lists the field replaceable parts for the minitower and Figure 5-12 provides the illustrated parts breakdown.

Page 88

5-12 Section 5 Disassembly and Reassembly

Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List*

Item Description Part Number

1 Keyboard, Ergo 229-00012 2 CD-ROM reader 730302-02 3a Ditto 3200 tape drive, backup 320547 3b Seagate tape drive, CTT800I-S 320545 4 Iomega ATAPI Zip drive 320703 5 Zip cartridge 142418 6a 3.2-GB IDE hard disk, Quantum ST Ultra DMA 300668-01 6b 4.3-GB IDE hard disk, Quantum ST Ultra DMA 215-00125 6c 7-GB IDE hard disk, Maxtor 300800 6d 4.3-GB IDE hard disk, Maxtor Ultra DMA 300801 7 3.5-inch diskette drive 219-00012 8 Microphone 232-00011 9 Speaker 158-056684-000 10 Left side cover 158-056682-000 11 Top cover, access cover 158-056680-000 12 Front panel 158-056678-000 13 Right side cover 158-056681-000 14 Power supply, 235 W FSP235-60GT (ATX2) 190300 15a Altec Lan speakers, ACS90 160312 15b Altec Lan speakers, ACS45 160314 15c Altec Lan speakers, ACS410 160313 15d Altec Lan speakers, ACS251 160315 16 Fan assembly 158-056683-000 17a PCI video board, GX2 (Reality 334) 060203 17b Video board, Revolution 3 060202 18 U.S. Robotics fax/modem board 090134 19 AWE32 wavetable 060125 20a 3C509B network board 158-050796-000 20b 3COM PCI 10/100 3C905TX ethernet board 158-052256-000A 21 Diskette drive signal cable 070114

____________

* 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 89

Section 5 Disassembly and Reassembly 5-13

Table 5-2 Direction T-Series Desktop Field-Replaceable Parts List*

Item Description Part Number

22 IDE signal cable 233-00026 23 Microsoft mouse 230-00025 24 System board 158-056663-000 25 Active heatsink 146824-01 26a P200 MMX processor 081698 26b P233 MMX processor 081778 27 AC power cable 070135 28a 32-MB DIMM 081779 28b 64-MB DIMM 081794 29 4-MB WRAM module 060204 30 Interface cable, second serial 158-050454-000 31 3-connector split IDE cable, hard disk/Zip 158-050836-002 32 Cable assembly, “Y” 158-052177-000 33 Wavetable cable 070636 34 Power strip, surge protector 213-00009 System power switch (not shown in figure) 130047 Phone cable, modem (not shown in figure) 158-050519-001 Cable, audio internal, dual MPC (not shown in

figure)

CD, Restore, Windows 95 systems onl

(not shown in figure) Cable, CD-ROM, audio (not shown in figure) 070112 Parallel printer cable (not shown in figure) 070829 DirecPC, PCI board (not shown in figure) 149834

070808

165326-08

Page 90

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

Section 5 Disassembly and Reassembly 5-15

Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List*

Item Description Part Number

1 AC power cable 070135 2 Microphone 232-00011 3 Microsoft mouse 230-00025 4 Keyboard, Egro 229-00012 5 Diskette drive signal cable 070114 6 IDE signal cable 233-00026 7 4-MB WRAM module 060204 8a PCI video board, GX2 (Reality 334) 060203 8b Video board, Revolution 3 060202 9 U.S. Robotics fax/modem board 090134 10 AWE32 wavetable 060125 11a 3C509B network board 158-050796-000 11b 3COM PCI 10/100 3C905TX ethernet board 158-052256-000A 12 System board 158-056663-000 13a 32-MB DIMM 081779 13b 64-MB DIMM 081794 14a Altec Lan speakers, ACS90 160312 14b Altec Lan speakers, ACS45 160314 14c Altec Lan speakers, ACS410 160313 14d Altec Lan speakers, ACS251 160315 15a P200 MMX processor 081698 15b P233 MMX processor 081778 16 Active heatsink 146824-01 17 Power supply, 235W FSP235-60GT (ATX2) 190300 18 Fan assembly 158-056683-000 19 Left side cover (access cover) 158-056686-000 20 Top cover 158-056685-000 21 Right side cover 158-056687-000 22 Front panel 158-056679-000

____________

* 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 92

5-16 Section 5 Disassembly and Reassembly

Table 5-3 Direction T-Series Minitower Field-Replaceable Parts List*

Item Description Part Number

23 Speaker 158-056684-000 24a 3.2-GB IDE hard disk, Quantum ST Ultra DMA 300668-01 24b 4.3-GB IDE hard disk, Quantim ST Ultra DMA 215-00125 24c 7-GB IDE hard disk, Maxtor 300800 24d 4.3-GB IDE hard disk, Maxtor Ultra DMA 25 CD-ROM reader 730302-02 26 Zip cartridge 142418 27 Iomega ATAPI Zip drive 320703 28 3.5-inch diskette drive 219-00012 29a Ditto 3200 tape drive, backup 320547 29b Seagate tape drive, CTT800I-S 320545 30 Interface cable, second serial 158-050454-000 31 3-connector split IDE cable, hard disk/Zip 158-050836-002 32 Cable assembly, “Y” 158-052177-000 33 Wavetable cable 070636 34 Power strip, surge protector 213-00009 System power switch (not shown in figure) 130047 Phone cable, modem (not shown in figure) 158-050519-001 Cable, audio internal, dual MPC (not shown in

figure) CD, Restore, Windows 95 systems onl

(not shown in figure) Cable, CD-ROM, audio (not shown in figure) 070112 Cable, audio internal, dual MPC (modem to

system board, not shown in figure) Parallel printer cable (not shown in figure) 070829 DirecPC, PCI board (not shown in figure) 149834

70808

165326-08

070808

Page 93

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

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

Direction T-Series User Manual 102017 Direction T-Series Service and Reference Manual 102017-SRV

____________

* 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 95

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  integrated 321-pin type 7 ZIF socket supports next generation processor

Random Access Memory (RAM)

Standard RAM  32 MB or 64 MB of SDRAM installed in one of two industry-standard DIMM sockets on system board

Total Memory  support for up to 256 MB of high-speed RAM in two DIMM sockets on system board

DIMM type  gold-plated, dual in-line modules (DIMMs) Expansion  expandable using the following modules:



1-MB by 64-bit module (8 MB)



2-MB by 64-bit module (16 MB)



4-MB by 64-bit module (32 MB)



8-MB by 64-bit module (64 MB)



16-MB by 64-bit module (128 MB).

Page 96

A-2 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  bi-directional, ECP/EPP support; one 25-pin connector



Serial  two high-speed RS-232C ports using 16550 UARTs, support transfer rates up to 19.2 KB per second; 9-pin connectors



Universal Serial Bus (USB)  two USB ports, support two USB peripherals directly to the system; with appropriate connector, each port supports up to 127 daisy-chained devices; supports 12 megabits (Mbs) per second



Keyboard  PS/2-compatible, 6-pin connector (mini DIN)



Mouse  PS/2 compatible, 6-pin connector (mini DIN)



IDE  dual IDE channels  one fast IDE and one standard IDE channel

 CD-ROM reader and hard disk on separate channels  support for up to 10 MB/second 32-bit transfers on PCI bus  support for a total of four IDE devices; 40-pin connectors  support for mode 3 and mode 4



Diskette Drive  supports two diskette drives, 1.2-MB and 1.44-MB drives; 34-pin connector

Page 97

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  standard



Separate Cursor Control Keys  standard

System Specifications A-3

Mouse  PS/2®-compatible; six-pin connector

Storage Devices

Accessible Devices



3 1/2-inch, 1.44-MB diskette drive



CD-ROM reader



Zip Drive  Iomega Zip 100 ATA drive on some systems; removable 100-MB data disks; data transfer rate up to 1.4 MB per second

Device Slots

Seven device slots:



a 3.5-inch accessible device slot contains the standard 1.44-MB diskette drive



one internal 3.5-inch hard drive slot for the hard drive, a second internal 3.5-inch hard drive slot is available



four accessible device slots

 One accessible 5.25-inch device slot contains the standard CD-ROM reader  One accessible 5.25-inch device slot  Two 3.5-inch device slots, the lower 3.5-inch slot is not accessible on the

desktop model

Page 98

A-4 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



Text 80 columns by 25 lines

132 columns by 25 lines 132 columns by 43 lines

Sound System

Audio integrated on system board based on Yamaha OPL3-SA3 (YMF701) and Creative Labs Sound Blaster™ AWE32 board (in some models)

Compatible with Sound Blaster Pro™, Sound Blaster™ 2.0, Ad Lib™,



MPU-401, and Microsoft® Windows Sound System™ for PC sound applications



Stereo jacks  microphone in, line in, line out



Built-in 16-bit sigma-delta stereo CODEC



Dual DMA channel and built-in FIFOs for full duplex simultaneous playback and record in 16-bit stereo



Programmable sample rate from 5.5 KHz to 48 KHz for recording and playback



6-bit (64 steps) master volume control



IMA-compatible adaptive differential pulse code modulation (ADPCM), A-Law and u-Law compression/decompression



DMA Demand mode, MPU-401 compatible MIDI interface



Wave Blaster upgradeable for wavetable synthesis



Built in 6-channel stereo mixer; supports 3 channel analog input



Software programmable ISA bus interface (DMA, Interrupt, I/O address)



Power down mode, dual master clock input

Page 99

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. (16.51 cm)



Minitower Width  7.8 in. (19.81)



Depth  17.3 in. (43.94 cm)

Keyboard

System Specifications A-5



Height  1.6 in. (4.1 cm) Width  19.0 in. (48.3 cm)



Depth  8.4 in. (21.3 cm)

Weight

The following weights are averages. Weights depend upon the system configuration. System Unit  27.5 lb (12.46 kg)

Keyboard  3.5 to 4 lb (1.6 to 1.8 kg)

Power

Universal Power Supply  235 W Power Management  Partial- and full-power reductions, Sleep button

Recommended Operating Environment

Temperature  50°F to 95°F (10°C to 35°C) Relative Humidity  20% to 80%

Page 100

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.

Figure B-1 shows the locations of the connectors and slots on the system board. Figure B-2 shows the locations of the connectors on the back of the system unit.

Table B-1 System Board Connectors

Connector(s) Page Number

Power supply B-6 Diskette drive B-8 IDE B-9 DIMM Sockets B-10 Front panel B-7 ISA B-11 PCI B-13 Parallel Interface B-5 Serial Interface B-4 Mouse/Keyboard B-6 USB port B-14