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

Copyright 1997

NEC Computer Systems Division

Packard Bell NEC, Inc.

1414 Massachusetts Avenue

Boxborough, MA 01719-2298

All Rights Reserved

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.

xv

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

iii

Contents

	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
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: The PowerMate NetPC system is 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:

TWindows® 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

TWindows 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:

TIntel CN430TX system board

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

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

TTwo 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

TS3 Trio 64 ViRGE/GX graphics chip integrated on system board

T2 MB of video SDRAM

T256-KB pipeline burst cache memory

T2.0-GB or 3.2-GB hard disk drive

TYamaha OPL3-SA3 sound system integrated on system board

TChicony 104 keyboard

TMicrosoft® IntelliMouse®.

1-4 Technical Information

System Board

Riser Card

DIMM
Sockets	Hard Disk
Processor/Heatsink

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
	Pentium 200-MHz MMX
System RAM*	16 MB to 256 MB of SDRAM in 2 DIMM sockets
IDE Hard Disk	Western Digital Ultra DMA/33:
Drive*	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

		Technical Information 1-5
	Table 1-1 PowerMate NetPC System Configuration
	Component	Description
	Audio	Yamaha OPL3-SA3
	Power Supply	Astec 51-watt (rated)
	Keyboard	“Melted” Chicony KB8963
	Mouse	Microsoft IntelliMouse 68874

SYSTEM BOARD

The system board includes the following features:

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

TPC87307 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)

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

TPTL BIOS in a flash memory device supporting system setup and PCI autoconfiguration; 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).

TExpansion slot for riser card

TPS/2® -style keyboard and mouse connectors

T32-KB internal dual write-back cache integrated on the MMX processor

TPipelined 32-bit addressing

T64-bit data bus

Tfrom 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)

T256-KB asynchronous write-back secondary cache memory

TSystem Setup program built into the BIOS

T2-Mb Flash ROM for fast economical BIOS upgrades

TPCI local bus for fast data transfer

TSupport for Intel Pentium processor upgrade

1-6 Technical Information

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

TIntegrated sound

¾OPTi Sound Blaster PRO®, OPTi Sound Blaster® 2.0, and Microsoft Windows® Sound System® compatible

¾SRS® 3D sound logic

¾Built-in 16-bit Sigma-Delta stereo CODEC and FM synthesis

TOne intelligent drive electronics (IDE) interface channel

¾Support for Ultra DMA/33 on Windows 95 systems

¾Support 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: The system supports only one Ultra 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.

TPower management with power saving mode, featuring inactivity timer

TExternal connectors for connecting the following external devices:

¾VGA-compatible monitor (standard, super, high-resolution VGA)

¾Personal system/2 (PS/2® )-style mouse

¾PS/2-style keyboard

¾Parallel printer; parallel port includes bi-directional Enhanced Parallel Port (EPP) and Enhanced Capabilities Port (ECP) support

¾Serial devices through two buffered 16C550 UART serial ports, supporting up to 115.2 KB per second (only one port enabled)

¾Two USB devices

¾Multimedia speaker and microphone.

Technical Information	1-7

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 System Controller (MTXC) Provides CPU interface control, functions as L2 write-back cache controller; DRAM controller; fully synchronous minimum latency PCI bus interface; power management control.

430TC PCI ISA IDE Xcelerator	Functions as a PCI to ISA bridge; PCI IDE
(PIIX4)	functionality, a USB controller; integrated
	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
	management control; real-time clock; 16-bit
	counters.
National Heceta LM78	Provides voltage, temperature, and security
	monitoring.
PC87307VUL I/O Controller	Multimode parallel port:
	Centronics compatible (standard mode)
	Enhanced capabilities port (ECP)
	Enhanced parallel port (EPP)
	Two RS-232C serial ports
	Integrated 8042A keyboard controller
	Supports industry-standard floppy controller
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 ISAand 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:

Tthe BIOS upgrade is performed quickly and easily

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

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

Tnew technology can be incorporated while maintaining corporate standards

Tnetwork 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 Play
		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:

TDIMMs do not need to be installed in pairs on the system board.

TDIMMs of different memory types and sizes can be installed on the same board.

TNo switches or jumpers need to be set if the memory is changed.

TThe 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:

Tintegrated ambient temperature sensor

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

Tregisters for storing POST hardware test results and error codes

Tremote 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:

Taccepts requests from peripherals

Tissues interrupt requests to the processor

Tresolves interrupt priorities

Tprovides 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.

			Technical Information 1-13
		Table 1-6 Interrupt Level Assignments*
	Interrupt	Assignment*
		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-SAX	OPL3-SAX
	6	Floppy Disk	Floppy Disk
	7	Parallel Port - LPT1	OPL3-SAX
	8	RTC Clock/Calendar	RTC Clock/Calendar
	9	S3 Virge/DX/GX	S3 Virge/DX/GX PCI/Intel
		PCI/Intel 82371AB USB	82371AB USB Serial Port
		Serial Port
	10	Not used	Not used
	11	Intel Ether Express	Intel Ether Express Pro/100
		Pro/100 PCI	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	Windows 95 System	Windows NT 4.0 System
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.

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

T Base I/O address:	220-22f
T FM Synthesis address:	388-38B
T 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:

T Joystick address:	201
T Base address:	220 to 250
T FM Synthesis address:	388

T MPU-401 MIDI address: 330

T Audio DMA:	0, 1, 3
T Audio IRQ:	5, 7, 9, 10
T MPU-401 MIDI IRQ:	5, 7, 9, 10