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Gigabyte GA-686LX manual

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Table of contents for the manual

  • Page 1

    GA - 686LX USER'S MANUAL Pentium  II Processor MAINBOARD REV. 1 First Edition[...]

  • Page 2

    GA-686LX 2 The author assumes no responsibility for any errors or omissions which may appear in this document nor does it make a commitment to update the information contained herein. Third-party brands and names are the property of their respective owners. SEPTEMBER 03, 1997 Taipei, Taiwan[...]

  • Page 3

    Table of Contents 3 TABLE OF CONTENTS 1. INTRODUCTION ............................................................................................................. 1- 1 1.1. PREFACE .................................................................................................................. 1- 1 1.2. KEY FEATURES ..............................[...]

  • Page 4

    GA-686LX 4 4.2. CONTROL KEYS ....................................................................................................... 4- 2 4.3. GETTING HELP ........................................................................................................ 4- 3 4.3.1. Main Menu ...................................................................[...]

  • Page 5

    Table of Contents 5 APPENDIX E: FCC DOCUMENT ........................................................................................ E-1[...]

  • Page 6

    [...]

  • Page 7

    Introduction 1- 1 1. INTRODUCTION 1.1. PREFACE Welcome to use the GA - 686LX motherboard. The motherboard is a Pentium  II Processor based PC / AT compatible system with AGP / PCI / ISA Bus, and has been designed to be the fastest PC / AT system. There are some new features allow you to operate the system with just the performance you want. This[...]

  • Page 8

    GA-686LX 1- 2 q ATX form factor, Double stack I/O connector, 4 layers PCB. 1.3. PERFORMANCE LIST The following performance data list is the testing results of some popular benchmark testing programs. These data are just referred by users, and there is no responsibility for different testing data values gotten by users. (The different Hardware &[...]

  • Page 9

    Introduction 1- 3 14.318MHz 66MHz 66MHz 8MHz ISA Slots 3.3V EDO/SDRAM DIMM Sockets Floppy Port Hi-End 30.6 32.6 1.4. BLOCK DIAGRAM 14.318MHz 66MHz 24MHz Ultra DMA/33 IDE Ports IDE Bus PCI Bus 66MHz AGP SLOT PCI Bus 33MHz 33MHz 33MHz 14.318MHz 48MHz ISA Bus AGP Bus LPT Port USB #2 PS/2 Keyboard COM Ports USB #1 DRAM Bus SLOT1 PS/2 Mouse USB Bus Host[...]

  • Page 10

    GA-686LX 1- 4 1.5. INTRODUCE THE Pentium  II Processor & AGP Figure 1:Retention Mechanism & attach Mount Figure 2:OEM Pentium  II Processor[...]

  • Page 11

    Introduction 1- 5 Figure 3:Heatsink / FAN & Heat sink support for OEM Pentium  II Processor Figure 4:Boxed Pentium  II Processor & Heat sink support[...]

  • Page 12

    GA-686LX 1- 6 What is AGP ? The Accelerated Graphics Port (AGP) is a new port on the Host-To-PCI bridge device that supports an AGP port. The main purpose of the AGP port is to provide fast access to system memory. The AGP port can be used either as fast PCI port (32-bit at 66MHz vs. 32-bits at 33MHz) or as an AGP port which supports 2x data-rate, [...]

  • Page 13

    Specification 2- 1 2. SPECIFICATION 2.1. HARDWARE • CPU − Pentium  II processor 233 – 633 MHz. − 242 pins 66MHz slot1 on board. • PROTECTION − Onboard Buzzer Alarm when detect "CPU FAN Failure" or “ CPU Overheat ” . − Automatically slow down CPU speed when "CPU FAN Failure" or "CPU Overheat". − I[...]

  • Page 14

    GA-686LX 2- 2 • I/O PORTS − Supports 2 16550 COM ports. (Using IRQ4, 3) − Supports 1 EPP/ECP LPT port. (Using IRQ7 or 5 and DMA3 or 1) − Supports 1 1.44/2.88 MB Floppy port. (Using DMA2 & IRQ6) − Supports 2 USB ports. − Supports PS/2 Mouse. (Using IRQ12 ) − Supports PS/2 Keyboard. (Using IRQ1 ) • GREEN FUNCTION − Suspend mode [...]

  • Page 15

    Hardware Installation 3- 1 3. HARDWARE INSTALLATION 3.1. UNPACKING The mainboard package should contain the following: • The GA - 686LX mainboard. • The Retention Mechanism & Attach Mount • USER'S MANUAL for mainboard. • Cable set for IDE & Floppy device. • Diskette or CD for Mainboard Utility. The mainboard contains sensitiv[...]

  • Page 16

    GA-686LX 3- 2 separate. 3.2. MAINBOARD LAYOUT SLOT6 PCI1 PCI2 PCI3 PCI4 COMA COMB LPT USB KB Mouse ATX POWER1 1 2 3 4 S1 BIOS RESET HD-LED GN-SW CN6 CN7 IDE1 IDE2 CN8 FLOPPY CN1 CN2 CN3 CN4 CN5 J2 DIMM1 DIMM2 DIMM3 DIMM4 Bank 1 Bank 0 371AB PIIX4 FAN POWER BUZZER1 J1 AGP1 BAT1 SLOT4 SLOT2 GA-686LX HT1 JP2 Bank 3 Bank 2 J3 J1 J5 J6 J7 J8 J9 IR PWR-O[...]

  • Page 17

    Hardware Installation 3- 3 For Pentium  II processor installed. t J2: CPU cooling FAN Power Connector Pin No. Function 1 GND. 2 +12V 3 SENSE t J3: SPEAKER Connector Pin No. Function 1 VCC 2 NC. 3 NC. 4 Output t J4: RESET Switch Pin No. Function 1 RESET Input 2 GND t J5: POWER ON LED (PW-LED) Pin No. Function 1 LED POWER (+) 2 NC 3 GND (-) t J6: [...]

  • Page 18

    GA-686LX 3- 4 5 POWER (+) t J8: GN-SW On – Off for enter suspend Green Mode. t J9: Soft Power Switch On – Off for POWER ON or Suspend IN / OUT. On 4 sec. For POWER OFF before VGA Enable or CMOS setup select “ delay 4sec. ” For POWER OFF mode. t J10: Green LED OFF Normal mode ON Suspend mode t S1: CPU INT. / EXT. FREQ. RATIO CPU TYPE 1 2 3 4[...]

  • Page 19

    Hardware Installation 3- 5 EDO & 67~100 MHz for SDRAM. The DRAM memory system on mainboard consists of bank 0, 1, 2 & bank 3. Each bank consists of 3 PCS 168 pins DIMM module DRAM. Because the 168 pins DIMM module is 64 bits width, using 1 PCS which can match a 64 bits system. The total memory size is 8 MB ~ 1 GB EDO / 512MB SDRAM. The DRAM[...]

  • Page 20

    GA-686LX 3- 6 the system can automatically boot OS. every time. Due to the life-time of Battery internal battery is 5 years, the user can change a new Battery to replace old one after it can not work. 3.7. SPEAKER CONNECTOR INSTALLATION There is always a speaker in AT system for sound purpose. The 4 - Pins connector J3 is used to connect speaker. T[...]