DFI AK74-SC User Manual
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DFI AK74-SC User Manual

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AK74-SC
Rev. AF+
AK74-SU
Rev. AF+
AK74-EC
Rev. A+
AK74-AC
Rev. A+
System Board
User’s Manual
43830043

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Summary of Contents for DFI AK74-SC

  • Page 1 AK74-SC Rev. AF+ AK74-SU Rev. AF+ AK74-EC Rev. A+ AK74-AC Rev. A+ System Board User’s Manual 43830043...
  • Page 2 Copyright Trademarks Caution:...
  • Page 3 FCC and DOC Statement on Class B...

  • Page 4: Table Of Contents

    2.2 System Memory......................2.3 Jumper Settings for Clearing CMOS Data.......... 2.4 Jumper Settings for the Onboard Audio Codec (AK74-SC/EC/AC only)..................2.5 Jumper Settings for the Onboard PCI Audio (AK74-SU only)......................2.6 Jumper Settings for Selecting the CPU’s Front Side Bus (AK74-AC only)......................
  • Page 5 Chapter 4 - Supported Softwares Appendix A - Using the Suspend to RAM Function Appendix B - System Error Messages Appendix C - Troubleshooting...

  • Page 6: Read Me First

    Introduction Read Me First This page contains a summary of the important notes that must be given special attention to prior to using the system board. CPU Temperature Protection The CPU Temperature Protection function has the capability of monitoring the CPU’s temperature during system boot-up. Once it has detected that the CPU’s temperature exceeded the CPU temperature limit defined in the BIOS, the system will automatically power-off after 5 warning beeps.
  • Page 7 Introduction 5VSB Power ≥ ≥ Drivers...

  • Page 8: Chapter 1 - Introduction

    Introduction Chapter 1 - Introduction 1.1 Features and Specifications 1.1.1 Features Chipset • VIA KT133 - VT8363 and VT82C686A (AK74-SC/SU) ® • VIA KT133 - VT8363 and VT82C686B (AK74-EC) ® • VIA KT133A - VT8363A and VT82C686B (AK74-AC) ® Processor The system board is equipped with Socket-A for 462-pin PGA processor.
  • Page 9 DIMMs into the DIMM sockets. Using different types (VCM or PC SDRAM) of DIMMs may cause problems. DIMMs Memory Size DIMMs Memory Size Expansion Slots Onboard Audio Features (AK74-SC/EC/AC only) Onboard PCI Audio Features - Creative ES1373 (AK74-SU only)
  • Page 10 Introduction ATX Double Deck Ports (PC 99 color-coded connectors) Connectors PCI Bus Master IDE Controller IrDA Interface...
  • Page 11 Introduction USB Ports BIOS Desktop Management Interface (DMI) 1.1.2 System Health Monitor Functions...
  • Page 12 Introduction 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 CPU’s temperature during system boot-up. Once it has detected that the CPU’s temperature exceeded the CPU temperature limit defined in the BIOS, the system will automatically power-off after 5 warning beeps.
  • Page 13 Introduction Automatic Chassis Fan Off Dual Function Power Button Wake-On-Ring Important: If you are using a modem add-in card, the 5VSB power source of your power supply must support a minimum of ≥ 720mA. RTC Timer to Power-on the System Wake-On-LAN Important: The 5VSB power source of your power supply must support a...
  • Page 14 Introduction AC Power Failure Recovery ACPI STR ® Suspend to RAM With the Suspend to RAM function enabled ® 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 ≥...

  • Page 15: Package Checklist

    Introduction 1.2 Package Checklist þ þ þ þ þ...

  • Page 16: Chapter 2 - Hardware Installation

    Hardware Installation Chapter 2 - Hardware Installation 2.1 System Board Layout AK74-SC (VIA KT133 - VT8363 and VT82C686A ® Uses the Onboard Audio)
  • Page 17 Hardware Installation AK74-SU (VIA KT133 - VT8363 and VT82C686A ® Uses Creative ES1373 PCI Audio)
  • Page 18 Hardware Installation AK74-EC (VIA KT133 - VT8363 and VT82C686B ® Uses the Onboard Audio)
  • Page 19 Hardware Installation AK74-AC (VIA KT133 - VT8363A and VT82C686B ® Uses the Onboard Audio)

  • Page 20: System Memory

    Hardware Installation 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.
  • Page 21 Hardware Installation 2.2.1 Installing the DIM Module...

  • Page 22: Jumper Settings For Clearing Cmos Data

    Hardware Installation 2.3 Jumper Settings for Clearing CMOS Data Clear CMOS Data - Jumper JP8 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 processor’s bus clock was incorrectly set in the BIOS.

  • Page 23: Jumper Settings For The Onboard Audio Codec (Ak74-Sc/Ec/Ac Only)

    Hardware Installation 2.4 Jumper Settings for the Onboard Audio Codec (AK74-SC/EC/AC only) Onboard Audio Codec Settings - Jumpers JP4, JP5, JP6 and JP7...

  • Page 24: Jumper Settings For The Onboard Pci Audio (Ak74-Su Only)

    Hardware Installation 2.5 Jumper Settings for the Onboard PCI Audio - Creative ES1373 (AK74-SU only) Onboard PCI Audio Select - Jumper JP2...

  • Page 25: Jumper Settings For Selecting The Cpu’S Front Side Bus (Ak74-Ac Only)

    Hardware Installation 2.6 Jumper Settings for Selecting the CPU’s Front Side Bus (AK74-AC only) CPU Front Side Bus Select - Jumper JP10...

  • Page 26: Jumper Settings For Selecting The Usb Power

    Hardware Installation 2.7 Jumper Settings for Selecting the USB Power USB Power Select for USB 1 and USB 2 - Jumper JP3...

  • Page 27: Ports And Connectors

    Hardware Installation Ports and Connectors 2.8.1 Serial Ports 2.8.2 PS/2 Mouse and PS/2 Keyboard Ports Warning: Make sure to turn off your computer prior to connecting or disconnecting a mouse or keyboard. Failure to do so may damage the system board.
  • Page 28 Hardware Installation 2.8.3 Parallel Port Setting Function 2.8.4 Floppy Disk Drive Connector...
  • Page 29 Hardware Installation Connecting the Floppy Disk Drive Cable 2.8.5 IDE Disk Drive Connector Connecting the IDE Disk Drive Cable...
  • Page 30 Hardware Installation Note: Refer to your disk drive user’s manual for information about selecting proper drive switch settings. Adding a Second IDE Disk Drive Important: If you encountered problems while using an ATAPI CD-ROM drive that is set in Master mode, please set the CD-ROM drive to Slave mode.
  • Page 31 Hardware Installation 2.8.6 Universal Serial Bus Ports Pin Function Function...

  • Page 32: Irda Connector

    Hardware Installation 2.8.7 IrDA Connector Function Note: The sequence of the pin functions on some IrDA cable may be reversed from the pin function defined on the system board. Make sure to connect the cable to the IrDA connector according to their pin functions.
  • Page 33 Hardware Installation 2.8.8 CPU Fan Connector with CPU Fan Protection Function...
  • Page 34 Hardware Installation Function...
  • Page 35 Hardware Installation 2.8.9 Chassis Fan Connector Function...
  • Page 36 Hardware Installation 2.8.10 Second Chassis Fan Connector Function 2.8.11 Game/MIDI Port...
  • Page 37 Hardware Installation 2.8.12 Audio Jacks Line-out Jack (J6 - Lime) Line-in Jack (J7 - Light Blue) Mic-in Jack (J8 - Pink)
  • Page 38 Hardware Installation 2.8.13 Internal Audio Connectors AUX-in and CD-in Function Function...
  • Page 39 Hardware Installation 2.8.14 Wake-On-LAN Connector Function Important: The 5VSB power source of your power supply must support a minimum of ≥ 720mA.
  • Page 40 Hardware Installation 2.8.15 Wake-On-Ring Connector Function Important: If you are using a modem add-in card, the 5VSB power source of your power supply must support a minimum of ≥ 720mA.
  • Page 41 Hardware Installation 2.8.16 AGP 4x LED and DIMM/PCI Standby Power LED AGP 4x LED DIMM Standby Power LED PCI Standby Power LED 3.3VSB Standby for PCI (Jumper JP1) Important: Lighted LEDs serve as a reminder that you must power-off the system then turn off the power supply’s switch or unplug the power cord prior to installing any DIM modules or add-in cards.
  • Page 42 Hardware Installation 2.8.17 Power Connector Function Function Important: The system board requires a minimum of 300W electric current.
  • Page 43 Hardware Installation 2.8.18 Front Panel LEDs and Switches HD-LED: Primary/Secondary IDE LED G-LED: Green LED ATX-SW: ATX Power Switch G-SW: Green Switch RESET: Reset Switch SPEAKER: Speaker Connector...
  • Page 44 Hardware Installation PWR-LED: Power/Standby LED Note: If a system did not boot-up and the Power/Standby LED did not light after it was powered-on, it may indicate that the CPU or memor y module was not installed properly. Please make sure they are properly inserted into their corresponding socket. Pin Assignment HD-LED G-LED...

  • Page 45: Chapter 3 - Award Bios Setup Utility

    Award BIOS Setup Utility Chapter 3 - Award BIOS Setup Utility 3.1 The Basic Input/Output System CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Standard CMOS Features Frequency/Voltage Control Advanced BIOS Features Load Fail-Safe Defaults Load Optimized Defaults Advanced Chipset Features Integrated Peripherals Set Supervisor Password Power Management Setup...
  • Page 46 Award BIOS Setup Utility CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Standard CMOS Features Item Help Date (mm:dd:yy) Wed, Jun 21 2000 Time (hh:mm:ss) 4 : 35 : 5 Menu Level IDE Primary Master Press Enter None Change the day, month, IDE Primary Slave Press Enter None year and century...
  • Page 47 Award BIOS Setup Utility IDE Primary/Secondary Master/Slave Capacity Access Mode Drive A and Drive B None 360K, 5.25 in. 1.2M, 5.25 in. 720K, 3.5 in. 1.44M, 3.5 in. 2.88M, 3.5 in. Video EGA/VGA CGA 40 CGA 80 Mono...
  • Page 48 Award BIOS Setup Utility Halt On No Errors All Errors All, But Keyboard All, But Diskette All, But Disk/Key Base Memory Extended Memory T otal Memory...

  • Page 49: Advanced Bios Features

    Award BIOS Setup Utility 3.1.2 Advanced BIOS Features CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Advanced BIOS Features Item Help Disabled Virus Warning Enabled CPU L1 Cache Menu Level Enabled CPU L2 Cache Enabled CPU L2 Cache ECC Checking Allows you to choose Enabled Quick Power On Self Test...
  • Page 50 Award BIOS Setup Utility CPU L1 Cache and CPU L2 Cache CPU L2 Cache ECC Checking Quick Power On Self Test First Boot Device, Second Boot Device, Third Boot Device and Boot Other Device Swap Floppy Drive Boot Up Floppy Seek...
  • Page 51 Award BIOS Setup Utility Boot Up NumLock Status Typematic Rate Setting Disabled Enabled Typematic Rate (Chars/Sec) Typematic Delay (Msec) Security Option System Setup...
  • Page 52 Award BIOS Setup Utility OS Select for DRAM > 64MB HDD S.M.A.R.T. Capability...

  • Page 53: Advanced Chipset Features

    Award BIOS Setup Utility 3.1.3 Advanced Chipset Features CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Advanced Chipset Features Item Help Disabled DRAM Timing By SPD SDRAM Cycle Length Menu Level 100MHz DRAM Clock Disabled System BIOS Cacheable Disabled Video RAM Cacheable AGP Aperture Size Enabled...
  • Page 54 Award BIOS Setup Utility SDRAM Cycle Length DRAM Clock System BIOS Cacheable Video RAM Cacheable AGP Aperture Size AGP-4X Mode AGP Driving Control AGP Driving Value...
  • Page 55 Award BIOS Setup Utility OnChip USB USB Keyboard Support OnChip Sound OnChip Modem Memory Parity/ECC Check...

  • Page 56: Integrated Peripherals

    Award BIOS Setup Utility 3.1.4 Integrated Peripherals CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Integrated Peripherals Item Help On-Chip Primary IDE Enabled On-Chip Secondary IDE Enabled Menu Level IDE Prefetch Mode Enabled IDE Primary Master PIO Auto IDE Primary Slave PIO Auto IDE Secondary Master PIO Auto...
  • Page 57 Award BIOS Setup Utility Auto Mode 0-4 IDE Primary Master/Slave UDMA and IDE Secondary Master/ Slave UDMA Auto Disabled Init Display First PCI Slot IDE HDD Block Mode Enabled Disabled Onboard FDD Controller Enabled Disabled...
  • Page 58 Award BIOS Setup Utility Onboard Serial Port 1 and Onboard Serial Port 2 Auto 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3 Disabled UART2 Mode Select IR Function Duplex Half Full TX,RX Inverting Enable Onboard Parallel Port 378/IRQ7, 3BC/IRQ7, 278/IRQ5 Disabled...
  • Page 59 Award BIOS Setup Utility Parallel Port Mode Normal “ECP (Extended Capabilities Port)” “EPP (Enhanced Parallel Port)” ECP Mode Use DMA EPP Mode Select Onboard Legacy Audio (AK74-SC/EC/AC only) Sound Blaster SB I/O Base Address SB IRQ Select...
  • Page 60 Award BIOS Setup Utility SB DMA Select MPU-401 MPU-401 I/O Address Game Port (200-207H)

  • Page 61: Power Management Setup

    Award BIOS Setup Utility 3.1.5 Power Management Setup CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Power Management Setup Item Help ACPI Function Enabled Power Management Press Enter Menu Level ACPI Suspend Type S1(POS) PM Control by APM Video Off Option Suspend ->...
  • Page 62 Award BIOS Setup Utility Min Saving Max Saving User Define HDD Power Down Doze Mode Suspend Mode ACPI Suspend Type S1(POS) S3(STR) Suspend to RAM Refer to “Using the Suspend to RAM Function” in appendix A for more information. PM Control by APM...
  • Page 63 Award BIOS Setup Utility Video Off Option Always On Suspend -> Off All Modes -> Off Video Off Method V/H SYNC + Blank Blank Screen DPMS Support MODEM Use IRQ Soft-Off by PWRBTN Delay 4 Sec Instant-Off...
  • Page 64 Award BIOS Setup Utility PWR Lost Resume State Keep Off Turn On Last State Wake Up Events USB Resume from S3 LPT & COM HDD & FDD PCI Master...
  • Page 65 Award BIOS Setup Utility Resume On LAN/Ring • • Resume By Alarm Enabled Disabled Date (of Month) 1-31 Resume Time (hh:mm:ss) Primary INTR...

  • Page 66: Pnp/Pci Configurations

    Award BIOS Setup Utility IRQs Activity Monitoring 3.1.6 PnP/PCI Configurations CMOS Setup Utility - Copyright (C) 1984-2000 Award Software PnP/PCI Configurations Item Help Reset Configuration Data Disabled Menu Level Resources Controlled By Auto(ESCD) IRQ Resources Press Enter Default is Disabled. Select Enabled to PCI/VGA Palette Snoop Disabled...
  • Page 67 Award BIOS Setup Utility Resources Controlled By Auto(ESCD) Manual IRQ Resources PCI/VGA Palette Snoop Enabled Disabled Assign IRQ for VGA Note: When Disabled, a “Yellow” mark will appear in Windows 95’s ® Device Manager.
  • Page 68 Award BIOS Setup Utility Assign IRQ for USB Note: When Disabled, a “Yellow” mark will appear in Windows 95’s ® Device Manager.

  • Page 69: Pc Health Status

    Award BIOS Setup Utility 3.1.7 PC Health Status CMOS Setup Utility - Copyright (C) 1984-2000 Award Software PC Health Status Item Help Current System Temp. 27C/80F Current CPU Temperature 37C/98F Menu Level Current CPU Fan Speed 0 RPM Current Chassis Fan Speed 0 RPM Vcore 1.75 V...
  • Page 70 Award BIOS Setup Utility CPU Fan Protection CPU Temp. Prot. Function and CPU Temp. Prot. Alarm CPU Temperature References...

  • Page 71: Frequency/Voltage Control

    Award BIOS Setup Utility 3.1.8 Frequency/Voltage Control CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Frequency/Voltage Control Item Help CPU Vcore Select Default Clock By Slight Adjust Menu Level ↑↓→← Move Enter:Select +/-/PU/PD:Value F10:Save ESC:Exit F1:General Help F5:Previous Values F6:Fail-Safe Defaults F7:Optimized Defaults CPU Vcore Select...

  • Page 72: Load Fail-Safe Defaults

    Award BIOS Setup Utility Clock By Slight Adjust This field provides several options for selecting the external system bus clock of the processor. The default setting is “100”. If you selected an option other than the default setting and is unable to boot up the system, clear the CMOS data by setting JP8 to 2-3 On.

  • Page 73: Set Supervisor Password

    Award BIOS Setup Utility 3.1.11 Set Supervisor Password 3.1.12 Set User Password...

  • Page 74: Save & Exit Setup

    Award BIOS Setup Utility 3.1.13 Save & Exit Setup 3.1.14 Exit Without Saving 3.2 Updating the BIOS...
  • Page 75 Supported Softwares Chapter 4 - Supported Softwares 4.1 Desktop Management Interface (DMI) 4.1.1 Running the DMI Utility...
  • Page 76 Supported Softwares 4.1.2 Using the DMI Utility Award DMI Configuration Utility Copyright Award Software Inc, 1996 [Edit DMI] [Add DMI] [Load DMI File] [Save DMI File] BIOS *** BIOS Auto Detect *** System Enclosure/Chassis Type : BIOS Information Processor Handle : 0000 Memory Controller Vendor Name : Memory Module...
  • Page 77 Supported Softwares Add DMI ← → ↑ ↓ Load DMI File ← → Press [Enter] to select DMI file for load Do you want to execute? (Y/N) Save DMI File ← → Press [Enter] to select DMI file for save...
  • Page 78 Supported Softwares 4.2 VIA Hardware Monitor Note: Use this utility only in Windows 95, Windows 98, Windows ® ® ® 98 SE, Windows ME, Windows 2000 or Windows NT ® ® ® operating system. 4.3 VIA Service Pack ® Service Pack Installation Notes ®...
  • Page 79 Supported Softwares Important: The VGA driver that came with some AGP cards is already bundled with the AGP VxD driver. Since the version of the bundled VxD driver may be older than the one provided in the CD, installing the bundled VxD driver may cause problems. If you are using this type of card, we recommend that you install first the AGP card’s VGA driver before installing the VIA Service Pack.
  • Page 80 Supported Softwares 4.5 Drivers and Utilities Installation Notes ® ® ® ® ® ®...
  • Page 81 Using the Suspend to RAM Function Appendix A - Using the Suspend to RAM Function A.1 Using the Suspend to RAM Function CMOS Setup Utility - Copyright (C) 1984-2000 Award Software Power Management Setup Item Help ACPI Function Enabled Power Management Press Enter Menu Level ACPI Suspend Type...
  • Page 82 Using the Suspend to RAM Function ® ®...
  • Page 83 Using the Suspend to RAM Function...
  • Page 84 Using the Suspend to RAM Function ®...
  • Page 85 System Error Message Appendix B - System Error Message B.1 POST Beep B.2 Error Messages CMOS BATTERY HAS FAILED 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.
  • Page 86 System Error Message FLOPPY DISK(S) fail (80) FLOPPY DISK(S) fail (40) Hard Disk(s) fail (80) Hard Disk(s) fail (40) Hard Disk(s) fail (20) Hard Disk(s) fail (10) Hard Disk(s) fail (08) Keyboard is locked out - Unlock the key Keyboard error or no keyboard present Manufacturing POST loop BIOS ROM checksum error - System halted Memory test fail...
  • Page 87 Troubleshooting Appendix C - Troubleshooting C.1 Troubleshooting Checklist CPU Fan Protection After booting up the system, a beeping alarm sounded then the system’s power was turned off:...

  • Page 88: Troubleshooting

    Troubleshooting Monitor/Display If the display screen remains dark after the system is turned on: The picture seems to be constantly moving. The screen seems to be constantly wavering. Power Supply When the computer is turned on, nothing happens.

  • Page 89: Hard Drive

    Troubleshooting Floppy Drive The computer cannot access the floppy drive. Hard Drive Hard disk failure. Excessively long formatting period. Parallel Port The parallel printer doesn’t respond when you try to print.
  • Page 90 Troubleshooting Serial Port The serial device (modem, printer) doesn’t output anything or is outputting garbled characters. Keyboard Nothing happens when a key on the keyboard was pressed. System Board...

This manual is also suitable for:

Ak74-ecAk74-acAk74-su

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