Nec POWERMATE ENTERPRISE NETPC SERVICE MANUAL

PROPRIETARY NOTICE AND LIABILITY DISCLAIMER

The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc. (hereinafter “NECCSD, PB NEC”) 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.

FaxFlash is a service mark of NEC Computer Systems Division (NECCSD), Packard Bell NEC, Inc. NEC, MultiSync, and PowerMate are registered trademarks of NEC Corporation, used under license. MagicEye is a trademark of 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 — November 1997

NEC Computer Systems Division

Packard Bell NEC, Inc.

1414 Massachusetts Avenue

Boxborough, MA 01719-2298

xiii

Preface

This manual contains technical information necessary for servicing and repairing the NEC PowerMate Enterprise NetPC computer from NEC Computer Systems Division, Packard Bell NEC, Inc. It contains hardware and interface information for users who need an overview of system design. The manual also includes system setup information, procedures for installing options, and illustrated parts lists. 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 computer features and

options, hardware design, interface ports, and internal devices. System specifications are listed including dimensions, weight, environment, safety compliance, power consumption, and memory.

Section 2 — Setup and Operation includes unpacking, setup, and operation information. Procedures are also included for configuring the system with the BIOS Setup utility, setting passwords, using power management and security features, reinstalling the operating system or software, and using the BIOS Update utility.

Section 3 — Option Installation provides installation procedures for adding optional expansion boards, upgrading the hard disk, adding system memory, or upgrading the processor.

NOTE: Access to the inside of the system is restricted. The PowerMate NetPC is designed to be upgraded by qualified, NECCSD-trained personnnel, such as system administrators, authorized dealers, NECCSD customer engineers, and service center technicians.

Section 4 — Maintenance and Troubleshooting includes recommended maintenance information, along with possible computer problems and their solutions, and the procedures for battery replacement. NECCSD telephone numbers are provided for obtaining service, accessing the NECCSD Bulletin Board System, and accessing the NEC FaxFlashSM service.

Section 5 — Repair includes computer disassembly and reassembly procedures. Also included are an exploded view diagram (Illustrated Parts Breakdown) and a parts lists for depot-level replaceable parts.

xiv Preface

NOTE: The PowerMate NetPC system is designed to be repaired by qualified, NECCSDtrained technicians at the depot level of service.

Appendix A — Connector Pin Assignments provides a list of system, riser, and option board internal connector pin assignments and a list of external pin assignments for the keyboard, mouse, serial ports, parallel port, network ports, and video port.

Appendix B —Jumper Settings provides jumper settings for the system board, and for options that may ship with the computer, including the CD-ROM reader and the fax/modem board.

Abbreviations

A ampere AC alternating current AT advanced technology (IBM PC) ATA AT attachment ATAPI AT attachment packet interface 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 DIMM Dual In-Line Memory Module 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 IPC integrated peripheral controller ips inches per second IRQ interrupt request

xvi Abbreviations

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 MPEG Motion Picture Experts Group 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 PDA personal digital assistant PFP plastic flat package PIO parallel input/output pixel picture element 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 SDRAM Synchronous Dynamic Random

Access memory SG signal ground SDRAM Synchronous Graphics Random

Access Memory. 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 Vdc volts, direct current VESA video electronics standards

association VFC VESA-compliant feature

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

Abbreviations xvii

Page

Preface......................................................................................................................... xiii

Abbreviations............................................................................................................... xv

Section 1 Technical Information

System Overview......................................................................................................... 1-1

System Board .............................................................................................................. 1-5

Processor and Secondary Cache............................................................................ 1-7

System BIOS........................................................................................................ 1-8

I/O Addressing...................................................................................................... 1-10

System Memory.................................................................................................... 1-11

iii

Hardware Monitor................................................................................................ 1-12

Interrupt Controller............................................................................................... 1-12

Plug and Play........................................................................................................ 1-15

Chassis.................................................................................................................. 1-15

PCI Local Bus ...................................................................................................... 1-15

PCI/IDE Ports ...................................................................................................... 1-16

Parallel Interface................................................................................................... 1-16

Serial Interface...................................................................................................... 1-17

USB Interface....................................................................................................... 1-19

Video Interface..................................................................................................... 1-19

Integrated Audio................................................................................................... 1-20

Diskette Drive Support................................................................................................ 1-21

Hard Disk Drive........................................................................................................... 1-21

Power Supply .............................................................................................................. 1-21

Riser Card.................................................................................................................... 1-22

Mouse ......................................................................................................................... 1-22

Keyboard..................................................................................................................... 1-22

Specifications............................................................................................................... 1-23

Section 2 Setup and Operation

Site Selection............................................................................................................... 2-1

Installation................................................................................................................... 2-2

iv Contents

Checking the Voltage Switch................................................................................ 2-3

Selecting System Orientation................................................................................. 2-4

Connecting Cables ................................................................................................ 2-5

Preventing Internal Access.................................................................................... 2-6

Operation..................................................................................................................... 2-7

Starting Up........................................................................................................... 2-7

Shutting Down...................................................................................................... 2-9

Setup Utility ................................................................................................................ 2-10

When to Use Setup............................................................................................... 2-11

How to Start Setup............................................................................................... 2-11

How to Use Setup................................................................................................. 2-12

Main Menu ........................................................................................................... 2-13

Displayed Information.................................................................................... 2-13

Language....................................................................................................... 2-13

System Time/Date.......................................................................................... 2-13

Floppy Options .............................................................................................. 2-14

Primary IDE................................................................................................... 2-14

Advanced Menu.................................................................................................... 2-16

PnP O/S......................................................................................................... 2-16

Reset Configuration Data............................................................................... 2-16

Memory Cache............................................................................................... 2-16

Memory Banks 0 and 1 .................................................................................. 2-16

Resource Configuration.................................................................................. 2-16

Peripheral Configuration ................................................................................ 2-17

Keyboard Configuration................................................................................. 2-19

DMI Event Logging....................................................................................... 2-19

Security Menu....................................................................................................... 2-20

User Password Is ........................................................................................... 2-20

Supervisor Password Is.................................................................................. 2-20

Set User or Supervisor Password................................................................... 2-20

Clear User Password...................................................................................... 2-21

User Setup Access ......................................................................................... 2-21

Using a Password........................................................................................... 2-21

Unattended Start............................................................................................ 2-21

Power Menu......................................................................................................... 2-22

Boot Menu ........................................................................................................... 2-22

Exit Menu............................................................................................................. 2-24

Contents v

Flash Utility ................................................................................................................. 2-24

LANDesk Client Manager............................................................................................ 2-25

PC Health Indicator .............................................................................................. 2-26

Workstation Management .............................................................................. 2-26

PC Health Meter............................................................................................ 2-26

PC Health Description.................................................................................... 2-26

Inventory.............................................................................................................. 2-27

DMI...................................................................................................................... 2-28

Monitoring Capabilities......................................................................................... 2-28

NEC Auto Backup Utility............................................................................................ 2-29

NEC Select Install CD ................................................................................................. 2-29

Operating System Restore..................................................................................... 2-30

Selective Application Restore Program ................................................................. 2-36

Section 3 Option Installation

General Rules........................................................................................................ 3-1

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

Required Tools ..................................................................................................... 3-3

Internal Access...................................................................................................... 3-4

Removing the System Unit Top Cover ........................................................... 3-4

Opening the System Chassis........................................................................... 3-5

Closing the System Chassis ............................................................................ 3-7

Replacing the System Unit Top Cover............................................................ 3-8

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

Installing an Expansion Board........................................................................ 3-9

Removing an Expansion Board....................................................................... 3-11

DIMM Upgrade.................................................................................................... 3-12

Checking System Memory.............................................................................. 3-12

Removing a DIMM........................................................................................ 3-12

Installing a DIMM.......................................................................................... 3-13

Processor Upgrade................................................................................................ 3-14

Removing the Processor................................................................................. 3-14

Installing an Upgrade Processor..................................................................... 3-15

Hard Disk Upgrade............................................................................................... 3-16

vi Contents

Section 4 Maintenance and Troubleshooting

Online Services............................................................................................................ 4-2

NECCSD FaxFlash Service................................................................................... 4-2

NECCSD Bulletin Board System .......................................................................... 4-3

E-Mail/Fax Technical Support Services................................................................. 4-4

Internet................................................................................................................. 4-5

Maintenance ................................................................................................................ 4-6

System Cleaning.................................................................................................... 4-6

Keyboard Cleaning................................................................................................ 4-7

Mouse Cleaning.................................................................................................... 4-8

Troubleshooting........................................................................................................... 4-9

Diagnosing and Solving Problems ......................................................................... 4-9

Replacing the CMOS Battery................................................................................ 4-13

Section 5 Disassembly and Reassembly

Safety Procedures ........................................................................................................ 5-1

Recommended Tools ................................................................................................... 5-3

Removal and Replacement........................................................................................... 5-3

System Unit Top Cover......................................................................................... 5-4

Removal......................................................................................................... 5-4

Replacement .................................................................................................. 5-5

Front Bezel........................................................................................................... 5-6

Removal......................................................................................................... 5-6

Replacement .................................................................................................. 5-7

Battery.................................................................................................................. 5-7

EMI Shield ........................................................................................................... 5-8

Removal......................................................................................................... 5-8

Replacement .................................................................................................. 5-9

EMI Clip (Riser Card)........................................................................................... 5-10

Removal......................................................................................................... 5-10

Replacement .................................................................................................. 5-10

Fan....................................................................................................................... 5-11

Removal......................................................................................................... 5-11

Replacement .................................................................................................. 5-12

Contents vii

Hard Disk Drive.................................................................................................... 5-13

Removal......................................................................................................... 5-13

Replacement .................................................................................................. 5-14

Memory................................................................................................................ 5-15

Removal......................................................................................................... 5-15

Replacement .................................................................................................. 5-16

System Board ....................................................................................................... 5-16

Removal......................................................................................................... 5-16

Replacement .................................................................................................. 5-19

PCI Card............................................................................................................... 5-19

Side Covers .......................................................................................................... 5-21

Removal......................................................................................................... 5-21

Replacement .................................................................................................. 5-22

Bottom Cover....................................................................................................... 5-22

Removal......................................................................................................... 5-22

Replacement .................................................................................................. 5-23

Power Supply/Fan/Top Chassis............................................................................. 5-24

Removal......................................................................................................... 5-24

Replacement .................................................................................................. 5-26

Processor.............................................................................................................. 5-27

Removal......................................................................................................... 5-27

Replacement .................................................................................................. 5-28

Riser Card............................................................................................................. 5-29

Removal......................................................................................................... 5-29

Replacement .................................................................................................. 5-30

Depot Level Parts List ................................................................................................. 5-31

Appendix A Connector Pin Assignments

System Board Connector Locations ............................................................................. A-1

Parallel Interface Connector.................................................................................. A-3

Serial Interface Connectors................................................................................... A-4

Keyboard and Mouse Connectors.......................................................................... A-5

VGA Interface Connector..................................................................................... A-6

Line In Connector................................................................................................. A-7

Line Out Connector .............................................................................................. A-7

Universal Serial Bus Connectors ........................................................................... A-7

DIMM Connectors....................................................................................................... A-8

viii Contents

Riser Card Connector Locations ..................................................................................A-10

Wake On LAN Connector.....................................................................................A-11

Remote Wake Up Connector ................................................................................A-11

System Reset Connector .......................................................................................A-11

Modem Remote Wake Up Connector....................................................................A-12

Storage Device Connectors...................................................................................A-12

Diskette Drive Connector...............................................................................A-12

IDE Connector...............................................................................................A-13

PCI Connector...................................................................................................... A-14

Power Supply Connectors.....................................................................................A-15

RJ-45 Connector................................................................................................... A-16

Appendix B Jumper Settings

Setting System Board Jumpers..................................................................................... B-1

Changing Processor Jumper Settings..................................................................... B-2

Clearing a Password.............................................................................................. B-4

Normal Mode................................................................................................. B-5

Configure Mode............................................................................................. B-6

Recovery Mode.............................................................................................. B-6

Riser Card.................................................................................................................... B-7

Riser Card Fan Speed Control Jumper................................................................... B-8

LAN Enable/Disable Jumper ................................................................................. B-8

Index Figures

1-1 Powermate NetPC Features – Front View......................................................1-2

1-2 Powermate NetPC Features – Back View.......................................................1-2

1-3 Top and Bottom Chassis Assemblies..............................................................1-3

1-4 Chassis Hardware Features.............................................................................1-4

2-1 Computer Vents.............................................................................................2-2

2-2 Line Voltage Switch Selector.........................................................................2-4

2-3 Horizontal Orientation ...................................................................................2-4

2-4 Vertical Orientation........................................................................................ 2-5

2-5 Rear Panel Connectors...................................................................................2-6

2-6 Chassis Security.............................................................................................2-6

Contents ix

2-7 Front Panel Controls and Indicators ...............................................................2-8

2-8 Setup Main Menu...........................................................................................2-12

2-9 Welcome Screen ............................................................................................2-33

2-10 Restore Mode Screen .....................................................................................2-34

2-11 Partitioning the Hard Drive Screen.................................................................2-34

2-12 Format Mode Screen......................................................................................2-35

2-13 Installing Applications Screen......................................................................... 2-35

2-14 Selective Application Restore Program Screen...............................................2-36

3-1 Antistatic Wrist Strap and Mat.......................................................................3-2

3-2 Required Tools ..............................................................................................3-3

3-3 Removing the System Unit Top Cover ...........................................................3-5

3-4 Removing the Front Bezel..............................................................................3-6

3-5 Locating System Chassis Screws....................................................................3-6

3-6 Separating the Chassis Top and Bottom.........................................................3-7

3-7 Replacing the System Unit Cover...................................................................3-8

3-8 Removing the Slot Cover and Retaining Bracket............................................3-10

3-9 Installing an Expansion Board........................................................................3-11

3-10 Removing a DIMM........................................................................................3-13

3-11 Releasing the Processor..................................................................................3-15

3-12 Removing the Hard Disk Screws and Cables ..................................................3-17

3-13 Hard Disk Cable Connections.........................................................................3-18

4-1 Removing the Keyboard Enclosure.................................................................4-7

4-2 Removing the Mouse Ball Cover....................................................................4-8

4-3 Locating the Battery.......................................................................................4-14

4-4 Removing the Battery ....................................................................................4-14

5-1 Removing the System Unit Top Cover ...........................................................5-5

5-2 Replacing the System Unit Top Cover............................................................5-6

5-3 Removing the Front Bezel..............................................................................5-7

5-4 Removing the Battery ....................................................................................5-8

5-5 Removing the EMI Shield..............................................................................5-9

5-6 Installing the EMI Clip On the Riser Card......................................................5-11

5-7 Removing the Fan..........................................................................................5-12

5-8 Removing the Hard Disk Drive ......................................................................5-13

5-9 Connecting the IDE Cable to the Hard Disk and Riser Card ...........................5-14

x Contents

5-10 Removing a Memory Module (DIMM) ..........................................................5-15

5-11 Removing the System Board Screws and Riser Card Cables...........................5-17

5-12 Removing the Plastic Rivets On the Riser Card ..............................................5-17

5-13 Removing the System Board and Riser Card ..................................................5-18

5-14 Separating the System Board and Riser Card..................................................5-18

5-15 Removing the Retaining Bracket and Filler Panel............................................5-20

5-16 Installing the PCI Card and Bracket ...............................................................5-21

5-17 Removing the Side Covers.............................................................................5-22

5-18 Removing the Bottom Cover..........................................................................5-23

5-19 Installing the Bottom Cover ...........................................................................5-24

5-20 Removing the Top Chassis Screws.................................................................5-25

5-21 Opening the Chassis.......................................................................................5-25

5-22 Disconnecting the Cables On the Riser Card...................................................5-26

5-23 Removing the Processor.................................................................................5-28

5-24 Separating the System Board and Riser Card..................................................5-29

5-25 Installing the EMI Clip On the Riser Card......................................................5-30

5-26 Powermate NetPC Illustrated Parts Breakdown.............................................5-33

A-1 System Board External Connector Locations..................................................A-1

A-2 System Board Internal Connector Locations...................................................A-2

A-3 Parallel Interface Connector...........................................................................A-3

A-4 Serial Interface Connectors............................................................................A-4

A-5 PS/2-Style Keyboard and Mouse Interface Connectors...................................A-5

A-6 VGA Interface Connector..............................................................................A-6

A-7 Riser Card Component and Connector Locations...........................................A-10

B-1 Locating System Configuration Jumpers.........................................................B-3

B-2 BIOS Recovery Jumper..................................................................................B-4

B-3 Riser Card Jumper Settings ............................................................................B-7

Tables

1-1 PowerMate NetPC System Configuration....................................................... 1-4

1-2 System Board Feature Components................................................................ 1-7

1-3 System Memory Map..................................................................................... 1-9

1-4 I/O Address Map ........................................................................................... 1-10

1-5 Memory Configurations ................................................................................. 1-11

1-6 Interrupt Level Assignments........................................................................... 1-13

Contents xi

1-7 DMA Settings................................................................................................ 1-14

1-8 Parallel Port Addresses and Interrupts............................................................ 1-16

1-9 Serial Port 1 Addresses and Interrupts............................................................ 1-18

1-10 Serial Port 2 Addresses and Interrupts............................................................ 1-18

1-11 Supported Resolutions, Colors, and Refresh Rates ......................................... 1-20

1-12 System Board Specifications .......................................................................... 1-23

1-13 General Specifications.................................................................................... 1-24

1-14 Mouse Specifications ..................................................................................... 1-24

1-15 Keyboard Specifications................................................................................. 1-24

1-16 System Unit Specifications............................................................................. 1-25

1-17 2.0-GB Hard Disk Drive Specifications.......................................................... 1-25

1-18 3.2-GB Hard Disk Drive Specifications.......................................................... 1-27

1-19 Environmental Standards................................................................................ 1-28

1-20 Power Supply Specifications .......................................................................... 1-29

1-21 Riser Card Specifications ............................................................................... 1-30

2-1 Power Supply Voltage Rating ........................................................................ 2-3

2-2 Power LED Functions.................................................................................... 2-7

2-3 Navigation Keys............................................................................................. 2-12

4-1 NECCSD Service and Support Telephone Numbers....................................... 4-1

4-2 Problems and Solutions.................................................................................. 4-9

5-1 Parts Removal and Replacement..................................................................... 5-3

5-2 Service and Ordering Information................................................................... 5-31

5-3 PowerMate NetPC Depot-Level Parts List..................................................... 5-32

5-4 PowerMate NetPC Documentation and Packaging........................................ 5-34

A-1 System Board Connectors.............................................................................. A-2

A-2 Parallel Interface Pin Assignments.................................................................. A-3

A-3 Serial Interface Pin Assignments..................................................................... A-4

A-4 Keyboard and Mouse Pin Assignments........................................................... A-5

A-5 VGA Interface Connector Pin Assignments.................................................... A-6

A-6 Line In Connector Pin Assignments................................................................ A-7

A-7 Line Out Connector Pin Assignments............................................................. A-7

A-8 Universal Serial Bus Connector Pin Assignments............................................ A-7

A-9 DIMM Socket Pin Assignments ..................................................................... A-8

xii Contents

A-10 Riser Board Connectors and Components ......................................................A-10

A-11 Wake On LAN Connector Pin Assignments....................................................A-11

A-12 Remote Wake Up Connector Pin Assignments ..............................................A-11

A-13 System Reset Pin Assignments .......................................................................A-11

A-14 Modem Remote Wake-up Pin Assignments.................................................... A-12

A-15 Diskette Drive Pin Assignments......................................................................A-12

A-16 IDE Interface Pin Assignments....................................................................... A-13

A-17 PCI Bus Pin Assignments............................................................................... A-14

A-18 Power Connector Pin Assignments.................................................................A-15

A-19 RJ-45 Connector Pin Assignments.................................................................A-16

B-1 Processor Bus Speed Jumper Settings ............................................................ B-3

B-2 Fan Speed Control ......................................................................................... B-7

B-3 LAN Enable Jumper Pin Assignments............................................................. B-7

Section 1

Technical Information

SYSTEM OVERVIEW

NEC PowerMate Enterprise NetPC computers are designed to enable central administration of computer resources in network environments. A highly manageable platform, the NetPC features network boot capabilities, controlled upgrade paths for system enhancements, and a “sealed case” that prevents end-user access for changing the system hardware or software configuration.

NOTE:

designed to be repaired by qualified, NECCSDtrained technicians at the depot level of service.

PowerMate NetPC systems are available in two basic models with the following features:

Windows® 95 operating system, 166-MHz Intel® Pentium® MMX processor,



16 MB (minimum) of Synchronous Dynamic Random-Access Memory (SDRAM), and a 2.0-GB IDE hard disk drive

The PowerMate NetPC system is



Windows NT® 4.0 operating system, a 200-MHz Intel Pentium MMX processsor, 32 MB of SDRAM, and a 3.2-GB hard disk drive.

The MMX processor technology boosts audio, video, and 3D graphics performance. Both PowerMate NetPC models come with an RJ-45 network connector and a video chip

with 2 MB of Synchronous Graphics Random-Access Memory (SGRAM). Both models also contain audio/video components for multimedia presentations and support

optional memory expansion modules. For further hardware enhancements, both models contain a PCI expansion slot for adding an optional, half-length, plug and play-compatible PCI board.

The system features two USB ports, two serial ports, and one parallel port. Ultra DMA, remote wakeup (“Wake on LAN”), 3D graphics, and power management are supported.

Build choices include hard disk drive and Pentium MMX processor upgrades. System memory is provided in 16-MB, 32-MB, and (as available) 64-MB and 128-MB DIMM sticks, in memory configurations ranging from 16 MB to 256 MB.

Figures 1-1 and 1-2 show the front and back features of the PowerMate NetPC system.

1-2 Technical Information

Figure 1-1 PowerMate NetPC Features – Front View

Figure 1-2 PowerMate NetPC Features – Back View

Technical Information 1-3

The NetPC chassis is divided into two sheet-metal halves. This allows the box to be completely enclosed and “sealed” before plastics are installed on the outside. The top half of the system contains the hard disk, fan, and power supply. The bottom half contains the system board and riser card.

Figure 1-3 Top and Bottom Chassis Assemblies

The basic hardware features inside the PowerMate NetPC are listed below:



Intel CN430TX system board



Intel Pentium 166-MHz MMX processor Intel Pentium 200-MHz MMX processor



RJ-45 LAN connector (on riser card) for connection to an Ethernet network



Two 168-pin DIMM sockets; system memory from 16 MB using 16-MB, 32-MB, and (per availability) 64-MB or 128-MB sticks; upgradeable to 256 MB

S3 Trio 64 ViRGE/GX graphics chip integrated on system board



2 MB of video SDRAM



256-KB pipeline burst cache memory



2.0-GB or 3.2-GB hard disk drive



Yamaha OPL3-SA3 sound system integrated on system board



Chicony 104 keyboard



Microsoft IntelliMouse.

1-4 Technical Information

System Board

DIMM Sockets

Processor/Heatsink

Riser Card

Hard Disk

Figure 1-4 Chassis Hardware Features

PowerMate NetPC computers are configured according to Table 1-1.

Table 1-1 PowerMate NetPC System Configuration

Component Description

System Unit

System Board Intel CN430TX (with sound) CPU* Pentium 166-MHz MMX

System RAM* 16 MB to 256 MB of SDRAM in 2 DIMM sockets IDE Hard Disk

Drive*

Pentium 200-MHz MMX

Western Digital Ultra DMA/33:

2.0 GB (WDAC22000)

3.2 GB (WDAC33200) L2 Cache 256-KB Graphics S3 Trio 64 ViRGE/GX 3D Graphics on system board Video DRAM 2 MB of SGRAM soldered on system board

* Varies by system

Table 1-1 PowerMate NetPC System Configuration

Component Description

Audio Yamaha OPL3-SA3 Power Supply Astec 51-watt (rated)

Technical Information 1-5

Keyboard Mouse

“Melted” Chicony KB8963 Microsoft IntelliMouse 68874

SYSTEM BOARD

The system board includes the following features:



Intel 82430TX PCI chipset used for PCI/ISA, memory, and peripheral control



PC87307 Super I/O controller (integrates standard PC I/O functions: two serial ports, one EPP/ECP-capable parallel port, floppy disk interface, real time clock, and keyboard and mouse controller; support for two USB interfaces)



Two dual in-line memory module (DIMM) sockets with support for up to 256 MB of SDRAM using DIMMs

PTL BIOS in a flash memory device supporting system setup and PCI auto-



configuration; the NetPC BIOS is slightly different than the standard PC BIOS (boot from CD-ROM is not an option, since this device is not integrated into the system).



Expansion slot for riser card



PS/2®-style keyboard and mouse connectors



32-KB internal dual write-back cache integrated on the MMX processor



Pipelined 32-bit addressing



64-bit data bus



from 16 MB to 256 MB of SDRAM upgradeable with 4-MB, 8-MB, 16-MB, 32-MB, 64-MB or 128-MB increments through DIMM sockets on system board (64-MB and 128-MB as available)



256-KB asynchronous write-back secondary cache memory



System Setup program built into the BIOS



2-Mb Flash ROM for fast economical BIOS upgrades



PCI local bus for fast data transfer



Support for Intel Pentium processor upgrade

1-6 Technical Information

National Heceta LM78 chip for monitoring voltage, temperature, and security



Integrated sound  OPTi Sound Blaster PRO, OPTi Sound Blaster 2.0, and Microsoft

Windows Sound System compatible

 SRS 3D sound logic  Built-in 16-bit Sigma-Delta stereo CODEC and FM synthesis

One intelligent drive electronics (IDE) interface channel

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 Support for Ultra DMA/33 on Windows 95 systems  Support for two IDE devices on the channel, one set as master, the other as

slave (physically, only one hard disk fits in the chassis)

NOTE:

DMA/33 device on the IDE channel. If an additional IDE device is added to the IDE channel, neither device can use Ultra DMA/33 mode.

The system supports only one Ultra

Power management with power saving mode, featuring inactivity timer

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External connectors for connecting the following external devices:

 VGA-compatible monitor (standard, super, high-resolution VGA)  Personal system/2 (PS/2®)-style mouse  PS/2-style keyboard  Parallel printer; parallel port includes bi-directional Enhanced Parallel Port

(EPP) and Enhanced Capabilities Port (ECP) support

 Serial devices through two buffered 16C550 UART serial ports, supporting

up to 115.2 KB per second (only one port enabled)

 Two USB devices  Multimedia speaker and microphone.

Technical Information 1-7

y sy

Table 1-2 lists the major chips on the system board. See Appendix A, “Connector Pin Assignments,” for a list of the system board connectors. See Appendix B, “Jumper Settings,” for a description of board switches.

Table 1-2 System Board Feature Components

Chip Function

Pentium Chip 166-MHz MMX Pentium processor

200-MHz MMX Pentium processor

82430TX Chipset:

430TX S

430TC PCI ISA IDE Xcelerator (PIIX4)

National Heceta LM78 Provides voltage, temperature, and securit

PC87307VUL I/O Controller Multimode parallel port:

stem Controller (MTXC)

Provides CPU interface control, functions as L2 write-back cache controller; DRAM controller; full latenc management control.

Functions as a PCI to ISA bridge; PCI IDE functionalit dual channel enhanced IDE interface with support for Ultra DMA/33; enhanced DMA controller; and interrupt controller based on 82C95, with support for 15 interrupts; power mana counters.

monitoring.

Centronics compatible (standard mode) Enhanced capabilities port (ECP) Enhanced parallel port (EPP) Two RS-232C serial ports Inte Supports industry-standard floppy controller

PCI bus interface; power

ement control; real-time clock; 16-bit

rated 8042A keyboard controller

nchronous minimum

, a USB controller; integrated

Yamaha OPL3-SA3 Audio on system board S3 Trio 64 ViRGE/GX 3D graphics on system board

Processor and Secondary Cache

The system uses an Intel Pentium processor with an internal clock speed of 166 MHz, or 200 MHz. These processors use Intel MMX technology.

The processor is an advanced pipelined 32-bit addressing, 64-bit data processor designed to optimize multitasking operating systems. The 64-bit registers and data paths support 64-bit addresses and data types.

1-8 Technical Information

The MMX processor has 32 KB of built-in cache memory (16 KB instruction and 16 KB data). To use the Pentium processor’s power, the system features an optimized 64-bit memory interface and 256 KB of secondary write-back cache located on the system board.

The processor is compatible with 8-, 16-, and 32-bit software written for the Intel386™, Intel486™, Pentium, and Pentium Pro processors. The Pentium processor is mounted into a socket-7 zero insertion force (ZIF) socket. Systems with the 166-MHz processor can be upgraded to 200-MHz. The socket provides an easy upgrade path.

System BIOS

The system BIOS is from Intel, based on Phoenix Technologies Limited (PTL) BIOS ‘95. This ISA- and PCI-compatible BIOS is contained in a flash memory device on the system board. The BIOS provides the Power-On Self-Test (POST), the system Setup program, a PCI and IDE auto-configuration utility, and BIOS recovery code.

The system BIOS is always shadowed. Shadowing allows any BIOS routine to be executed from fast 32-bit DRAM on the system board, instead of from the slower 8-bit flash device.

NEC’s Flash ROM allows fast, economical BIOS upgrades. The Flash ROM is a reprogrammable EPROM containing both the system and video BIOS. Using the Flash ROM to change the ROM BIOS provides the following advantages:

the BIOS upgrade is performed quickly and easily

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the expense of replacing ROM BIOS chips is eliminated, so system maintenance costs are reduced

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there is less chance of inadvertently damaging the system board than when physically replacing ROMs

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new technology can be incorporated while maintaining corporate standards

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network administrators can exercise company-wide control of BIOS revisions.

Technical Information 1-9

The BIOS programs execute the Power-On Self-Test, initialize processor controllers, and interact with the display, diskette drives, hard disk drives, communication devices, and peripherals. The system BIOS also contains the Setup utility. The POST copies the ROM BIOS into RAM (shadowing) for maximum performance.

The Flash ROM allows the system and video BIOS to be upgraded with the BIOS Update utility, without having to physically remove the ROM (see Section 2 for further information on the BIOS Update utility). The Flash ROM supports the reprogramming of the system BIOS and the video BIOS.

The system memory map is shown in Table 1-3.

Table 1-3 System Memory Map

Memory Space Size Function

100000-10000000 256 MB Extended memory F0000-FFFFF 64 KB PTL system BIOS EC000-EFFFF 16 KB Reserved for BIOS EA000-EBFFF 8 KB ECSD (Plug and Play configuration and DMI) E9000-E9FFF 4 KB Reserved for BIOS E8000-E8FFF 4 KB OEM logo or Scan User Flash E4000-E7FFF 32 KB Reserved for BIOS (currently available as UMB) E0000-E3FFF 96 KB USB buffer area C8000-D7FFF 160 KB Available HI DOS memory (open to ISA and PCI bus) A0000-C7FFF 1 KB Video memory and BIOS 9F800-9FFFF 127 KB Extended BIOS data (moveable by memory manager

software) 80000-9F7FF 126 KB Extended conventional memory 00000-7FFFF 512 KB Conventional memory

1-10 Technical Information

I/O Addressing

The processor communicates with I/O devices by I/O mapping. The hexadecimal (hex) addresses of I/O devices are listed in Table 1-4. (In Plug and Play systems, these addresses are typical but may vary by configuration.)

Table 1-4 I/O Address Map

Address (Hex) I/O Device Name

0000-000F DMA controller 0020-0021 Programmable interrupt controller 0040-0043 System timer 1 0060 Standard 101/102 or Microsoft® Natural

Keyboard 0061 System speaker 0064 Standard 101/102 or Microsoft® Natural

Keyboard 0071 System CMOS/real time clock 0078-007F System board resources 0080 System board resources 0081-008F DMA controller 00A0-00A1 Programmable interrupt controller 00C0-00DF DMA controller 00F0-00FF Numeric data processor 01F0-01F7 Intel 82371AB PCI Bus Master IDE controller 01F0-01F7 Primary IDE controller (dual FIFO) 0220-022F YAMAHA OPL3-SAx Sound System 0274-0277 I/O read data port for ISA Plug and Pla

enumerator 0290-0297 System board resources 0278-027F Parallel port 2 02E8-02EF COM4 02F8-02FF COM2 0330-0331 YAMAHA OPL3-SAx Sound System

0370-0371 YAMAHA OPL3-SAx Sound System 0378-037F Parallel port (LPT1)

0388-038F YAMAHA OPL3-SAx Sound System 003B0-03BB S3 Virge/DX/GX PCI graphics

Technical Information 1-11

Table 1-4 I/O Address Map

Address (Hex) I/O Device Name

003C0-03DF S3 Virge/DX/GX PCI graphics 03F0-03F5 Standard diskette drive controller 03F6 Intel 82371AB PCI Bus Master IDE controller 03F6 Primary IDE controller (dual FIFO) 03F7 Standard diskette drive controller 04D0-04D1 System board resources 0530-0537 YAMAHA OPL3-SAx Sound System

0CF8-0CFF PCI bus 7000-700F System board resources

8000-803F System board resources FCA0-FCBF Intel 82371AB PCI Bus Master IDE controller FCD0-FCD7 Intel 82371AB PCI Bus Master IDE controller FCD0-FCD7 Primary IDE controller (dual FIFO) FCE0-FCFF Intel EtherExpress Pro/100 WfM PCI adapter

System Memory

The system comes with between 16 MB and 256 MB of SDRAM installed in dual in-line memory module DIMM sockets on the system board.

The memory configuration consists of two sockets. The DIMM memory sockets accept 168-pin, 64-bit (non-parity) 8-, 16-, 32-, 64-, and 128-MB DIMMs. Table 1-5 lists the supported DIMMs.

Table 1-5 Memory Configurations

DIMM Size Type Configuration Technology

8 MB CAS Latency 2 SDRAM 1-Mbit x 64-bit 16 Mbit 16 MB CAS Latency 2 SDRAM 2-Mbit x 64-bit 16 Mbit 32 MB CAS Latency 2 SDRAM 4-Mbit x 64-bit 16 Mbit 64 MB CAS Latency 2 SDRAM 8-Mbit x 64-bit 64 Mbit 128 MB CAS Latency 2 SDRAM 16-Mbit x 64-bit 64 Mbit

1-12 Technical Information

Memory upgrades are easy with DIMMs. Advantages of using DIMMs are listed below:

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DIMMs do not need to be installed in pairs on the system board. DIMMs of different memory types and sizes can be installed on the same board.

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No switches or jumpers need to be set if the memory is changed.

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The system BIOS automatically detects the DIMMs.

See “Checking the Memory in the System” in Section 3 for the valid DIMM configurations.

Hardware Monitor

The National Semiconductor Heceta LM78 chip provides economical instrumentation capabilities (NEC MagicEye™ Technology) for reduced cost of PC ownership when the system is used with the LANDesk® Client Manager. This single-chip ASIC features:

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integrated ambient temperature sensor

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power supply voltage monitoring to detect excessively high or low voltage levels

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registers for storing POST hardware test results and error codes

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remote reset capabilities from a remote peer or server through LANDesk Client Manager v.3.0

When ranges for temperature, fan speed, or voltage are exceeded, an interrupt is activated. The hardware monitor component connects to the ISA bus as a 8-bit I/O mapped device.

Interrupt Controller

The interrupt controller operates as an interrupt manager for the entire system environment. The controller:

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accepts requests from peripherals

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issues interrupt requests to the processor

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resolves interrupt priorities

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provides vectors for the processor to determine which interrupt routine to execute.

The interrupt controller has priority assignment modes that can be reconfigured at any time during system operations.

The interrupt levels are described in Table 1-6. Interrupt level assignments 0 through 15 are in order of decreasing priority. See Section 2 for information on using the Setup utility to change the interrupts.

Table 1-6 Interrupt Level Assignments*

Interrupt Assignment*

Technical Information 1-13

Windows 95 System

Windows NT 4.0 System

0 System Timer System Timer 1 Keyboard Keyboard 2 Sound Sound 3 Not used Not used 4 Serial Port A - COM1 Serial Port A - COM1 5 OPL3-SA

OPL3-SA

6 Floppy Disk Floppy Disk 7 Parallel Port - LPT1 OPL3-SA

8 RTC Clock/Calendar RTC Clock/Calendar 9 S3 Virge/DX/GX

PCI/Intel 82371AB USB

S3 Vir 82371AB USB Serial Port

e/DX/GX PCI/Intel

Serial Port 10 Not used Not used 11 Intel Ether Express

Pro/100 PCI

Intel Ether Express Pro/100

PCI 12 Mouse Mouse 13 Coprocessor Coprocessor 14 IDE port A IDE port A 15 NA NA

* In Plug and Play systems, these interrupts are typical but may vary by configuration. See the following paragraphs.

1-14 Technical Information

DMA settings are given in Table 1-7.

Table 1-7 DMA Settings*

DMA

0 OPL3-Sax OPL3-Sax 1 OPL3-Sax OPL3-Sax 2 Floppy Disk Controller Floppy Disk Controller 3 Available Available 4 Cascade Cascade 5 Available Available 6 Available Available 7 Available Available

* In Plug and Play systems, these interrupts are typical but may vary by configuration. See the following paragraphs.

Windows 95 System Windows NT 4.0 System

The following audio resources vary depending on which operating system or environment they run under (default based on shipping configurations):

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Base I/O address: 220-22f

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FM Synthesis address: 388-38B

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MPU-401 MIDI address: 330-331

The following information indicates the possible resources that a sound component can have after third party devices have been added to the system:

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Joystick address: 201

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Base address: 220 to 250

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FM Synthesis address: 388

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MPU-401 MIDI address: 330

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Audio DMA: 0, 1, 3

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Audio IRQ: 5, 7, 9, 10

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MPU-401 MIDI IRQ: 5, 7, 9, 10

+ 152 hidden pages

Nec POWERMATE ENTERPRISE NETPC SERVICE MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Abbreviations

Contents

Technical Information