DFI AK74-SC User manual
AK74-SC Rev. AF+
AK74-EC Rev. A+
AK74-EN Rev. A+
AK74-AC Rev. A+
System Board
Users Manual
43840104
Co yright
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.
© 001. All Rights Reserved.
Trademarks
Microsoft® MS-DOS®, WindowsTM, Windows® 95, Windows® 98,
Windows® 98 SE, Windows® ME, Windows® 000 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
To avoid damage to the system:
Use the correct AC input voltage range.
To reduce the risk of electric shock:
Unplug the power cord before removing the system chassis
cover for installation or servicing. After installation or servicing,
cover the system chassis before plugging the power cord.
Battery:
Danger of explosion if battery incorrectly replaced.
Replace only with the same or equivalent type recommend by
the manufacturer.
Dispose of used batteries according to the battery
manufacturers instructions.
Joystick or MIDI port:
Do not use any joystick or MIDI device that requires more than
10A current at 5V DC . There is a risk of fire for devices that
exceed this limit.
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.
. 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. Package Checklist.........................................................................................................
Chapter 2 - Hardware Installation
.1 System Board Layout .............................................................................................
. System Memory.............................................................................................................
.3 Jumper Settings for Clearing CMOS Data..........................................
.4 Jumper Settings for the Onboard Audio Codec
(AK74-SC/EC/AC only)..........................................................................................
.5 Jumper Settings for Selecting the CPUs Front Side Bus
(AK74-AC only).............................................................................................................
.6 Jumper Settings for Selecting the USB Power...................................
.7 Ports and Connectors.............................................................................................
Chapter 3 - Award BI S Setup Utility
3.1 The Basic Input/Output System.....................................................................
3.1.1 Standard CMOS Features.............................................................
3.1. 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...............................................................
3.1.1 Set User Password..............................................................................
3.1.13 Save & Exit Setup.................................................................................
3.1.14 Exit Without Saving..............................................................................
3. Updating the BIOS.....................................................................................................
6
13
4
4
46
50
53
58
63
66
68
69
69
70
70
71
71
71
14
18
0
1
3
4
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface.....................................................................
4. VIA Hardware Monitor............................................................................................
4.3 VIA Service Pack..........................................................................................................
4.4 Audio Drivers and Software Application...............................................
4.5 Drivers and Utilities Installation Notes.....................................................
Appendix A - Using the Suspend to RAM
Function
A.1 Using the Suspend to RAM Function........................................................
Appendix B - System Error Messages
B.1 POST Beep.......................................................................................................................
B. Error Messages..............................................................................................................
Appendix C - Troubleshooting
C.1 Troubleshooting Checklist....................................................................................
73
76
76
77
78
83
83
79
85
Introduction
6
1.1 Features and Specifications
1.1.1 Features
Chipset
VIA® KT133 - VT8363 and VT8 C686A (AK74-SC)
VIA® KT133 - VT8363 and VT8 C686B (AK74-EC/EN)
VIA® KT133A - VT8363A and VT8 C686B (AK74-AC)
Processor
The system board is equipped with Socket-A for 46 -pin PGA
processor. It is also equipped with a switching voltage regulator that
automatically detects 1.100V to 1.850V.
AK74-SC/EC/EN
- AMD AthlonTM/DuronTM 100MHz ( 00MHz DDR) FSB pro-
cessor (600/650/700/750/800/850/900/950MHz, 1GHz,
1. GHz or future processors)
AK74-AC
- AMD AthlonTM/DuronTM 100/133MHz ( 00/ 66MHz DDR)
FSB processor (600/650/700/750/800/850/900/950MHz,
1GHz, 1.3GHz or future processors)
System Memory
Supports up to 1.5GB using VCM (Virtual Channel Memory) or
PC SDRAM DIMM (unbuffered or registered).
- Registered DIMM - PC-100 only.
Three 168-pin DIMM sockets
Uses x64 PC SDRAM, 3.3V
- PC-100 SDRAM DIMM for 100MHz memory bus
- PC-133 SDRAM DIMM for 133MHz memory bus
L cache memory
- DuronTM processor: built-in 64KB Level pipelined burst
cache
- AthlonTM processor: built-in 56KB Level pipelined burst
cache
Chapter 1 - Introduction
Introduction
7
Expansion Slots
The AK74-SC/EC/AC system board is equipped with 1 universal
AGP slot, 4 dedicated PCI slots, 1 shared PCI/ISA slot and 1 AMR
slot.
The AK74-EN system board is equipped with 1 universal AGP slot
and 5 dedicated PCI slots.
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 x 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.
AMR (Audio/Modem Riser) is an interface designed for installing an
audio riser card, modem riser card or audio/modem riser card that
is compliant to the AMR specification.
nboard Audio Features (AK74-SC/EC/AC)
Supports Microsoft® DirectSound/DirectSound 3D
AC97 supported with full duplex, independent sample rate con-
verter for audio recording and playback
DIMMs
MBx64
4MBx64
8MBx64
Memory Size
16MB
3 MB
64MB
DIMMs
16MBx64
3 MBx64
64MBx64
Memory Size
1 8MB
56MB
51 MB
Note:
If you are using more than one DIMM, make sure you insert
the same type of DIMMs into the DIMM sockets. Using
different types (VCM or PC SDR M) of DIMMs may cause
problems.
Introduction
8
ATX Double Deck Ports (PC 99 color-coded connectors)
Two USB ports
Two NS16C550A-compatible DB-9 serial ports
One SPP/ECP/EPP DB- 5 parallel port
One mini-DIN-6 PS/ mouse port
One mini-DIN-6 PS/ keyboard port
One game/MIDI por t (AK74-SC/EC/AC)
Three audio jacks: line-out, line-in and mic-in (AK74-SC/EC/AC)
Connectors
One connector for additional external USB ports
One connector for IrDA interface
Two IDE connectors
One floppy drive interface supports up to two .88MB floppy
drives
One ATX power supply connector
One Wake-On-LAN connector
One Wake-On-Ring connector
CPU, chassis and second chassis fan connectors
Three internal audio connectors - AUX-in, CD-in and TAD
(AK74-SC/EC/AC)
PCI Bus Master IDE Controller
Two PCI IDE interfaces suppor t up to four IDE devices
Supports ATA/33 and ATA/66 hard drives (AK74-SC)
Supports ATA/33, ATA/66 and ATA/100 hard drives
(AK74-EC/EN/AC)
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-1 0 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 and ASKIR
standard.
Introduction
9
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 J19
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.
BI S
Award BIOS, Windows® 95/98/ 000/ME Plug and Play compat-
ible
Supports SCSI sequential boot-up
Flash EPROM for easy BIOS upgrades
Supports DMI .0 function
Mbit flash memory
Vcore selectable in the BIOS
Desktop Management Interface (DMI)
The system board comes with a DMI .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 par t 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
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 and overheat alarm
Monitors 1 V/5V/3.3V/VCORE voltages and failure alarm
Monitors CPU/chassis fan speed and failure alarm
Automatic chassis fan on/off control
Read back capability that displays temperature, voltage and fan
speed
Introduction
10
Refer to the PC Health Status section in chapter 3 and the VIA
Hardware Monitor section in chapter 4 for more information.
1.1.3 Intelligence
CPU Temperature Protection
The CPU Temperature Protection function has the capability of
monitoring the CPUs temperature during system boot-up. Once it
has detected that the CPUs temperature exceeded the CPU
temperature limit defined in the BIOS, the system will automatically
power-off after 5 warning beeps. Refer to CPU Temp. Prot. Function
and CPU Temp. Prot. Alarm in the PC Health Status section in
chapter 3 for more information.
CPU Fan Protection
The CPU Fan Protection function has the capability of monitoring the
CPU fan during system boot-up and will automatically power-off the
system once it has detected that the CPU fan did not rotate. This
preventive measure has been added to protect the CPU from
damage and insure a safe computing environment. Refer to CPU
Fan Connector with CPU Fan Protection Function in chapter and
CPU Fan Protection in the PC Health Status section in chapter 3
for more information.
ver 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 CPU Vcore Select in the Frequency/
Voltage Control section in chapter 3 for more information.
CPU verclocking
The CPU Overclocking function allows you to adjust the processors
bus clock. However, overclocking may result to the processors or
systems instability and are not guaranteed to provide better system
performance. Refer to CPU Host/PCI Clock in the Frequency/
Voltage Control section in chapter 3 for more information.
Introduction
11
Automatic Chassis Fan ff
The chassis fan will automatically turn off once the system enters the
Suspend mode.
Dual Function Power Button
Depending on the setting in the Soft-Off By PWRBTN field of the
Power Management Setup, this switch will allow the system to enter
the Soft-Off or Suspend mode.
Wake- n-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 and Resume On LAN/Ring (Wake Up
Events field) 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
≥
720m .
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 Resume
By Alarm (Wake Up Events field) in the Power Management
Setup section in chapter 3 for more information.
Wake- n-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 and Resume On LAN/Ring (Wake Up Events field) 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
≥
720m .
Introduction
1
AC Power Failure Recovery
When power returns after an AC power failure, you may choose to
either power-on the system manually, let the system power-on
automatically or return to the state where you left off before power
failure occurs. Refer to PWR Lost Resume State in the Power
Management Setup section in chapter 3 for more information.
ACPI STR
The system board is designed to meet the ACPI (Advanced
Configuration and Power Interface) specification. ACPI has energy
saving features that enables PCs to implement Power Management
and Plug-and-Play with operating systems that support OS Direct
Power Management. Currently, only Windows® 98/ 000/ME supports
the ACPI function allowing you to use the Suspend to RAM function.
With the Suspend to RAM function enabled, you can power-off the
system at once by pressing the power button or selecting Standby
when you shut down Windows® 98/ 000/ME without having to go
through the sometimes tiresome process of closing files, applications
and operating system. This is because the system is capable of
storing all programs and data files during the entire operating session
into RAM (Random Access Memory) when it powers-off. The
operating session will resume exactly where you left off the next time
you power-on the system. Refer to Using the Suspend to RAM
Function in appendix A for more information.
Important:
The 5VSB power source of your power supply must support
≥
1 .
Virus Protection
Most viruses today destroy data stored in hard drives. The system
board is designed to protect the boot sector and partition table of
your hard disk drive.
Introduction
13
1.2 Package Checklist
The system board package contains the following items:
þThe system board
þA users manual
þOne IDE cable for ATA/33, ATA/66 or ATA/100 IDE drives
þOne 34-pin floppy disk drive cable
þOne Main Board Utility CD
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.
14
Hardware Installation
2.1 System Board Layout
Chapter 2 - Hardware Installation
AK74-SC
(VI ® KT133 - VT8363 and VT82C686 ; supports onboard audio)
Hardware Installation
15
AK74-EC
(VI ® KT133 - VT8363 and VT82C686B; supports onboard audio)
16
Hardware Installation
AK74-EN
(VI ® KT133 - VT8363 and VT82C686B)
Hardware Installation
17
AK74-AC
(VI ® KT133 - VT8363 and VT82C686B; supports onboard audio)
Note:
The illustrations on the following pages are based on the K74-SC/
EC/ C system boards, which are boards that support onboard audio.
18
Hardware Installation
2.2 System Memory
The system board is equipped with
three 168-pin DIMM (Dual In-line
Memory Module) sockets that support
VCM or PC SDRAM DIMM. PC
SDRAM (Synchronous Dynamic
Random Access Memory) uses a fast
memory interface technology that
includes using the clock on the chip to
synchronize with the CPU clock so that
the timing of the memory chips and the
timing of the CPU are synchronized. This
saves time during transmission of data,
subsequently increasing system performance.
Refer to chapter 1 (System Memory section) for detailed
specification of the memory supported by the system board.
Warning:
Electrostatic discharge (ESD) can damage your system board,
processor, disk drives, add-in boards, and other components. Perform
the upgrade instruction procedures described at an ESD workstation
only. If such a station is not available, you can provide some ESD
protection by wearing an antistatic wrist strap and attaching it to a
metal part of the system chassis. If a wrist strap is unavailable,
establish and maintain contact with the system chassis throughout
any procedures requiring ESD protection.
Hardware Installation
19
1. Pull the tabs which are at the ends of the socket to the side.
. Position the DIMM above the socket with the notches in the
module aligned with the keys on the socket.
3. Seat the module vertically into the socket. Make sure it is
completely seated. The tabs will hold the DIMM in place.
Pin 1
Notch
Key
Tab
Tab
2.2.1 Installing the DIM Module
A DIM module simply snaps into a DIMM socket on the system
board. Pin 1 of the DIM module must correspond with Pin 1 of the
socket.
0
Hardware Installation
2.3 Jumper Settings for Clearing CM S Data
Clear CM S Data - Jumper JP8
If you encounter the following,
a) CMOS data becomes corrupted.
b) You forgot the supervisor or user
password.
c) You are unable to boot-up the
computer system because the
processors bus clock was incorrectly
set in the BIOS.
you can reconfigure the system with the
default values stored in the ROM BIOS.
To load the default values stored in the
ROM BIOS, please follow the steps below.
1. Power-off the system and unplug the power cord.
. Set JP8 pins and 3 to On. Wait for a few seconds and set JP8
back to its default setting, pins 1 and On.
3. Plug the power cord and power-on the system.
If your reason for clearing the CMOS data is due to incorrect
setting of the processors bus clock in the BIOS, please proceed
to step 4.
4. After powering-on the system, press <Del> to enter the main
menu of the BIOS.
5. Select the Frequency/Voltage Control submenu and press
<Enter>.
6. Set the CPU Host/PCI Clock field to its default setting or an
appropriate bus clock. Refer to CPU Host/PCI Clock in the
Frequency/Voltage Control section in chapter 3 for more
information.
Other manuals for AK74-SC
2
This manual suits for next models
3
Other DFI Motherboard manuals
