DFI AK76-SN Manuel utilisateur

AK76-SN

Rev. A+

System Board

Users Manual

46500051

This publication contains information that is protected by copyright.

No part of it may be reproduced in any form or by any means or

used to make any transformation/adaptation without the prior

written permission from the copyright holders.

This publication is provided for informational purposes only. The

manufacturer makes no representations or warranties with respect to

the contents or use of this manual and specifically disclaims any

express or implied warranties of merchantability or fitness for any

particular purpose.The user will assume the entire risk of the use or

the results of the use of this document. Further, the manufacturer

reserves the right to revise this publication and make changes to its

contents at any time, without obligation to notify any person or

entity of such revisions or changes.

Trademarks

Microsoft®MS-DOS®, WindowsTM, Windows®95, Windows®98,

Windows®98 SE, Windows®ME, Windows®2000 and Windows

NT®4.0 are registered trademarks of Microsoft Corporation. AMD,

AthlonTM and DuronTM are registered trademarks of Advanced Micro

Devices, Inc. VIA is a registered trademark of VIA Technologies, Inc.

Award is a registered trademark of Award Software, Inc. Other

trademarks and registered trademarks of products appearing in this

manual are the properties of their respective holders.

Caution:

Danger of explosion if battery incorrectly replaced.

Replace only with the same or equivalent type recommended by the

manufacturer.

Dispose of used batteries according to the battery manufacturers

instructions.

FCC and DOC Statement on Class B

This equipment has been tested and found to comply with the limits

for a Class B digital device, pursuant to Part 15 of the FCC rules.

These limits are designed to provide reasonable protection against

harmful interference when the equipment is operated in a residential

installation. This equipment generates, uses and can radiate radio

frequency energy and, if not installed and used in accordance with

the instruction manual, may cause harmful interference to radio

communications. However, there is no guarantee that interference

will not occur in a particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be

determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the

following measures:

 Reorient or relocate the receiving antenna.

 Increase the separation between the equipment and the receiver.

 Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

 Consult the dealer or an experienced radio TV technician for

help.

Notice:

1. The changes or modifications not expressly approved by the

party responsible for compliance could void the user's authority

to operate the equipment.

2. Shielded interface cables must be used in order to comply with

the emission limits.

Table of Contents

Chapter 1 - Introduction

1.1 Features and Specifications..................................................................................

1.2 Package Checklist.........................................................................................................

Chapter 2 - Hardware Installation

2.1 System Board Layout ..........................................................................................

2.2 System Memory...........................................................................................................

2.3 Selecting the CPU Frequency Ratio..........................................................

2.4 Selecting the CPU Core Voltage..................................................................

2.5 Jumper Settings for Selecting the CPUs Front Side Bus......

2.6 Jumper Settings for Clearing CMOS Data........................................

2.7 Ports and Connectors...........................................................................................

Chapter 3 - Award BIOS Setup Utility

3.1 The Basic Input/Output System.....................................................................

3.1.1 Standard CMOS Features.............................................................

3.1.2 Advanced BIOS Features..............................................................

3.1.3 Advanced Chipset Features ......................................................

3.1.4 Integrated Peripherals.........................................................................

3.1.5 Power Management Setup............................................................

3.1.6 PnP/PCI Configurations....................................................................

3.1.7 PC Health Status...................................................................................

3.1.8 Frequency/Voltage Control............................................................

3.1.9 Load Fail-Safe Defaults.....................................................................

3.1.10 Load Optimized Defaults..............................................................

3.1.11 Set Supervisor Password...............................................................

3.1.12 Set User Password..............................................................................

3.1.13 Save & Exit Setup.................................................................................

3.1.14 Exit Without Saving..............................................................................

Chapter 4 - Supported Softwares

4.1 Desktop Management Interface.....................................................................

4.2 Drivers and Utilities....................................................................................................

Appendix A - System Error Messages

A.1 POST Beep.......................................................................................................................

A.2 Error Messages..............................................................................................................

Appendix B - Troubleshooting

B.1 Troubleshooting Checklist....................................................................................

Introduction

1.1 Features and Specifications

1.1.1 Features

Chipset

AMD

761 and VIA®VT82C686B

Processor

The system board is equipped with Socket-A for 462-pin PGA

processor. It is also equipped with a switching voltage regulator that

automatically detects 1.100V to 1.850V (0.025V per step).

 AMD AthlonTM (Thunderbird) / DuronTM 500MHz and faster

processor

 200MHz/266MHz processor interface speed (DDR)

 Auto detect processor voltage

 Clock multiplier from 5.0 to 12.5

 Supports VID/FID Override

System Memory

 Two 184-pin DDR DIMM sockets

 Uses 64Mbit, 128Mbit, 256Mbit and 512Mbit technology

- Supports up to 2GB using 2.5V unbuffered DDR-200/DDR-

266 SDRAM DIMM

- Supports up to 4GB using 2.5V registered DDR-200/DDR-

266 SDRAM DIMM

 L2 cache memory

- DuronTM processor: built-in 64KB Level 2 pipelined burst

cache

- AthlonTM (Thunderbird) processor: built-in 256KB Level 2

pipelined burst cache

 ECC supported (uses x72 DDR SDRAM DIMM)

Chapter 1 - Introduction

Introduction

Expansion Slots

The system board is equipped with 1 universal AGP slot. AGP is an

interface designed to support high performance 3D graphics cards. It

utilizes a dedicated pipeline to access system memory for texturing,

z-buffering and alpha blending.The universal AGP slot supports AGP

2x with up to 533MB/sec. bandwidth and AGP 4x with up to

1066MB/sec. bandwidth for 3D graphics applications. AGP in this

system board will deliver faster and better graphics to your PC .

The system board is also equipped with 6 dedicated PCI slots that

comply to PCI Local Bus Specification rev. 2.2.

ATX Double Deck Ports (PC 99 color-coded connectors)

 Two USB ports

 Two NS16C550A-compatible DB-9 serial ports

 One SPP/ECP/EPP DB-25 parallel port

 One mini-DIN-6 PS/2 mouse port

 One mini-DIN-6 PS/2 keyboard port

Connectors

 One connector for 2 additional external USB por ts

 One connector for IrDA interface

 Two IDE connectors

 One floppy drive interface supports up to two 2.88MB floppy

drives

 One ATX power supply connector

 One Wake-On-LAN connector

 One Wake-On-Ring connector

 Connectors for CPU fan 1, CPU fan 2, chassis fan 1, chassis fan

2 and chip fan

Introduction

PCI Bus Master IDE Controller

 Two PCI IDE interfaces support up to four IDE devices

 Supports ATA/33, ATA/66 and ATA/100 hard drives

 PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up

to 16.6MB/sec.)

 Bus mastering reduces CPU utilization during disk transfer

 Supports ATAPI CD-ROM, LS-120 and ZIP

IrDA Interface

The system board is equipped with an IrDA connector for wireless

connectivity between your computer and peripheral devices. It

supports peripheral devices that meet the HPSIR or ASKIR standard.

USB Ports

The system board supports 4 USB ports. Two onboard USB ports

are located at the ATX double deck ports of the board. The J6

connector on the system board allows you to connect the optional

3rd and 4th USB ports. These optional USB ports, which are

mounted on a card-edge bracket, will be provided as an option.

USB allows data exchange between your computer and a wide

range of simultaneously accessible external Plug and Play peripherals.

BIOS

 Award BIOS, Windows®95/98/2000/ME Plug and Play compat-

ible

 Supports SCSI sequential boot-up

 Flash EPROM for easy BIOS upgrades

 Supports DMI 2.0 function

 2Mbit flash memory

Desktop Management Interface (DMI)

The system board comes with a DMI 2.0 built into the BIOS. The

DMI utility in the BIOS automatically records various information

about your system configuration and stores these information in the

DMI pool, which is a part of the system board's Plug and Play

BIOS. DMI, along with the appropriately networked software, is

designed to make inventory, maintenance and troubleshooting of

Introduction

BIOS. DMI, along with the appropriately networked software, is

designed to make inventory, maintenance and troubleshooting of

computer systems easier. Refer to chapter 4 for instructions on using

the DMI utility.

1.1.2 System Health Monitor Functions

The system board is capable of monitoring the following system

health conditions.

 Monitors CPU/system temperature

 Monitors 2.5V/3.3V/5V/12V/VCORE voltages

 Monitors the fan speed of CPU fan 1 and chassis fan 1

 Read back capability that displays temperature, voltage and fan

speed

Refer to the PC Health Status section in chapter 3 for more

information.

1.1.3 Intelligence

Over Voltage

The Over Voltage function allows you to manually adjust to a higher

core voltage that is supplied to the CPU. Although this function is

supported, we do not recommend that you use a higher voltage

because unstable current may be supplied to the system board

causing damage. Refer to Selecting the CPU Core Voltage in

chapter 2 for more information.

CPU Overclocking

The CPU Overclocking function allows you to adjust the CPUs bus

clock in 1MHz increment. However, overclocking may result to the

processors or systems instability and are not guaranteed to provide

better system performance. Refer to CPU Clock in the Frequency/

Voltage Control section in chapter 3 for more information.

Introduction

Dual Function Power Button

Depending on the setting in the Soft-Off By PBTN field of the

Power Management Setup, this switch will allow the system to enter

the Soft-Off or Suspend mode.

Wake-On-Ring

This feature allows the system that is in the Suspend mode or Soft

Power Off mode to wake-up/power-on to respond to calls coming

through an internal or external modem. Refer to Wake-On-Ring

Connector in chapter 2 and RI Resume in the Power Management

Setup section in chapter 3 for more information.

Important:

If you are using a modem add-in card, the 5VSB power source

of your power supply must support a minimum of

≥

720mA.

Wake-On-LAN

The Wake-On-LAN function allows the network to remotely wake

up a Soft Power Down (Soft-Off) PC.Your LAN card must support

the remote wakeup function. Refer to Wake-On-LAN Connector in

chapter 2 and RI Resume in the Power Management Setup section

in chapter 3 for more information.

Important:

The 5VSB power source of your power supply must support a

minimum of

≥

720mA.

RTC Timer to Power-on the System

The RTC installed on the system board allows your system to

automatically power-on on the set date and time. Refer to RTC

Resume in the Power Management Setup section in chapter 3 for

more information.

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