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26

S1686D-001-01 http://www.tyan.com

3.

Determine if different speeds of SIMMs have been installed in the

same or different banks, and the BIOS setup is configured for the
slowest speed of RAM used. It is recommended to use the same
RAM speed for SIMMs in different banks Finally, check for bad SIMM
modules and Chips

TroubleShooting Flowchart

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Summary of Contents for S1686D

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Page 2: ...2 S1686D 001 01 http www tyan com Based on Rev 0 3 5 20 97 ...

Page 3: ...6 DRAM Installation 18 2 7 L2 Cache Memory SRAM Memory 19 2 8 VRM Voltage Regulator Modules 19 2 9 Peripheral Device Installation 19 2 10 Connecting the Power Supply 19 3 CPU Installation and Removal 20 3 1 Installation of Pentium II Boxed Active Processors 20 3 2 Installing CPUs 21 3 3 Installing CPU Cooling Fans 21 3 4 Installation and Removal of Passive Processors 22 4 1 Troubleshooting Procedu...

Page 4: ...d high speed I O To provide you with the best board possible on the market Tyan has also incorporated into the board design the newest technologies available in the industry These new features include the following 1 LM78 Power Monitoring See Appendix for details 2 Power off through Software for Windows 95 This function allows the user to turn off the ATX power supply and shut down the system by c...

Page 5: ...U types Chipset Information Intel 440 FX series Natoma chipset 25 30 33 MHz PCI bus This newest and fastest Pentium II chipset offers the fastest performance available on the market and ensures compatibility of your system System RAM Eight 72 pin SIMMs 4 double banks Supports 5V or 3 3V memory Supports EDO Extended Data Out FPM Fast Page Mode ECC Error Correcting Code or Parity checking This featu...

Page 6: ...Tyan is also a Solaris certified manufacturer 1 4 Manual Organization Chapter 1 Introduction describes the features and performance of the S1686D system Chapter 2 Installation describes the procedures of setting up the system board Also refer to this Chapter for detailed information about jumper settings Chapter 3 Installation and Removal of the CPU gives detailed instruc tions on the installation...

Page 7: ...used the pin pins specified for the jumper should not be connected and the circuit of the connecting pins will not be shorted 1 6 CPU Prototypes Currently Intel produces two types of Pentium II processors the Active Boxed Processor and the Passive Processor Refer to the pictures shown on Page 8 These two types of processors are essentially the same in design The only difference between these two t...

Page 8: ...8 S1686D 001 01 http www tyan com Pentium II Boxed Active CPU Shown with Power Connector for Fan Pentium II Passive CPU Shown with Heatsink ...

Page 9: ...ic strap Anti static straps can be purchased at computer hardware stores 3 With the power supply plugged in and the system turned off touch an unpainted area of the system chassis before handling the motherboard or any component Remember to repeat the above steps whenever you handle the motherboard or its components 2 1 3 Properhandlingofthemotherboard After opening the S1686D motherboard carton r...

Page 10: ...3 J29 1 CPU Ret Bracket 441FX Pentium II Second SEC Slot CPU Ret Brack 2 3 1MotherboardLayout Module key notch Module key notch Heat Sink Hole Heat Sink Hole Heat Sink Hole Heat Sink Hole RTC FormoreinformationaboutthisMotherboard pleasevisitourWebPageand Clickablemotherboardsathttp www tyan com html faq html 1 J26J27 SIMM 2 SIMM 3 SIMM 4 SIMM 5 SIMM 6 SIMM 7 SIMM 8 J6 Power Supp JP1 1 J3J4 1Volta...

Page 11: ...ings P12 J49 50 LM78 IRQ Select P13 J44 CMOS Reset P12 P17 JP1 Magic Packet Connector P14 Block J29 Pin Assignments Power on Pins 1 2 close IR2 Pins8 10 close IDE LED Pins 15 16 close Power LED Pins 18 20 close Reset Pins 22 23 close Speaker Pins24 27 Cover Pins1 2 with a jumper cap to short the circuit between Pins Cover Pins8 10 with a jumper cap and short the circuit between pins Cover Pins15 1...

Page 12: ... On 266MHz On On Off On 1 2 Off On 300MHz Off On Off On 1 2 Off On Bus Speed HOST SP PCI SP J37 J12 J11 60MHz 30MHz 3 4 On Off 66MHz 33MHz 1 2 Off On J37 J12 J11 J37J12 J11 CPU60MHz PCI30MHz CPU66MHz PCI33MHz SIMM Voltage Select Do not change set at Factory J15 J16 J26 J27 J13 J14 J24 J25 5V Close Close Close Close Open Open Open Open 3 3V Open Open Open Open Close Close Close Close CMOS Reset J44...

Page 13: ...O Select J30 J36 1 2 2 3 1 2 2 3 COMPort Close Open Close Open Inf Red Open Close Open Close J30 J36 J30 J36 Pin 1 2 3 Pin 1 2 3 COM Port Infra Red LM78 IRQ Select IRQ J49 J50 5 Open 1 2 7 Open 2 3 9 1 2 Open 11 2 3 Open ...

Page 14: ... Lan 6 PWROK Block J29 Refer to Page 11 for more information Pin No Definition 1 2 Power On 3 4 EXTSMI 8 10 IR2 15 16 IDELED 18 20 PowerLED 22 23 Reset 24 27 Speaker J17 Keyboard Connector J18 PS 2 Mouse Connector J22 Universal Serial Bus Ports CON5 FDDCON CON6 PrimaryIDE CON 7 Secondary IDE CON2 LPT1 CON3 COM1 CON1 COM2 ...

Page 15: ...15 S1686D 001 01 Speaker Connector J29 pins 24 27 Pin Assignments 24 5V 25 ground 27 Speaker data Refer to Page 11 for more information ...

Page 16: ...ser The RESET switch is a 2 pin connector and should be installed on pins 22 and 23 on J29 Refer to Page 10 and Page 11 for detailed information 2 5 3IDELEDConnectorInstallation J29 Your S1686D board provides a 2 Pin header to connect the IDELED cable When connected the IDELED light on the panel of the case flashes if a IDE activity is detected The cable is connected to pins 15 16 of J29 Refer to ...

Page 17: ...S Setups It can be updated as new versions of the BIOS become available The flash utility will guide you through the process step by step However we do not recommend that you flash the onboard BIOS This procedure should only be done by a qualified technician or a Tyan technical support engineer J56 determines which type of Flash EPROM is used This jumper has been set to match the onboard BIOS chip...

Page 18: ...k1 Bank 2 Bank 3 Total 4MBx2 none none none 8MB 8MBx2 none none none 16MB 4MBx2 4MBx2 none none 16MB 8MBx2 8MBx2 none none 32MB 4MBx2 4MBx2 4MBx2 4MBx2 32MB 16MBx2 none none none 32MB 16MBx2 16MBx2 none none 64MB 32MBx2 none none none 64MB 64MBx2 none none none 128MB 16MBx2 16MBx2 16MBx2 16MBx2 128MB 32MBx2 32MBx2 none none 128MB 32MBx2 32MBx2 32MBx2 none 192MB 32MBx2 32MBx2 32MBx2 32MBx2 256MB 64...

Page 19: ...ce Installation Install the motherboard after you have checked all of the jumper settings Also be sure to check all connectors thoroughly and read the technical manuals that come with your peripheral cards before you install your add on peripheral cards If a PCI Bus interface card is to be installed in the system any one of the five PCI Bus slots will support either a Master or a Slave device The ...

Page 20: ...ich can be easily damaged by static electricity Do not touch the CPU pins with your fingers 3 1 Installation of Pentium II Boxed Active Processors Note Active Processors are equipped with cooling fans When installing an Active CPU you also need to connect the cooling fan cable to its connector Installing CPU Retention Modules 1 Installation of a Pentium II Active Processor requires a CPU Retention...

Page 21: ...re you plug the CPU into the CPU module 6 Press firmly on the CPU until you hear a click The Pentium II CPU will make a clicking sound when it is fully locked into the Retention Module 7 After the CPU is securely seated on the Retention Module in the Pentium II Slot connect the CPU s Cooling Fan cable to the Cooling Fan Power Connector on the board 3 3 Installing CPU Cooling Fans 8 Locate the Cool...

Page 22: ...the CPU Retention Module make sure that you have the appropriate end of the module lined up with the key notch on the Pentium II Slot connector This will ensure that the module is installed properly 2 Before tightening the screws make certain that the module is flush against the motherboard If one end of the module is raised above the board check the orientation of the module 3 Install the module ...

Page 23: ...e will be a click when the locks are securely fastened 3 4 3 Installing Pentium II Passive Processors 1 Align the CPU with the CPU retention module Make sure the heat sink is lined up with the heat sink mount bracket If you put the CPU in the wrong way you may damage the CPU the motherboard and or the socket 2 Slowly press down on the CPU module until the CPU locks into place A clicking noise will...

Page 24: ...ve the locks to the center of the CPU A click will be heard when the CPU has been unlocked Gently pull up on the CPU taking care not to bend the motherboard or the CPU Retention Module To remove the lock from the Retention Bracket gently press the ends of the locks inward and pull 3 4 6 Removing Heat Sink Locks Heat Sink Lock ...

Page 25: ...that all peripheral cards are properly installed in their slots 4 Check for incorrect cache memory jumper settings that may prevent accurate detection of memory 5 The I O Bus speed should be running at the standard speed of 8 MHz 6 Use the speaker to determine if any beep codes exist Refer to Addendum A and Addendum B for details about beep codes Note If you are a system integrator VAR or OEM a PO...

Page 26: ...of SIMMs have been installed in the same or different banks and the BIOS setup is configured for the slowest speed of RAM used It is recommended to use the same RAM speed for SIMMs in different banks Finally check for bad SIMM modules and Chips TroubleShootingFlowchart ...

Page 27: ...Site address is http www tyan com If the problem is still not resolved have the following information ready before you call for technical support 1 System Board Serial Number 2 CPU Serial Number 3 Invoice Number Date 4 Purchase Form 5 Sale s Person s name 6 Product Configurations 4 3 Returning Merchandise for Service A receipt or a copy of your invoice marked with the date of purchase is required ...

Page 28: ... and Serial Bus Interfaces A 32 byte auto increment RAM is provided for POST Power On Self Test code storage Features The LM78 includes the following features Temperature sensoring 5 positive voltage inputs 2 op amps for negative voltage monitoring 3 fan speed monitoring inputs Input for additional temperature sensors Chassis Intrusion Detector Input The software program LDCM LANDesk Client Manage...

Page 29: ...er connected w Consult the dealer or an experienced radio TV technician for help NoticeforCanada This apparatus complies with the Class B limits for radio interference as specified in the Canadian Department of Communications Radio Interference Regulations Cet appareil est conforme aux normes de CLASSE B d interference radio tel que spec cifie par le Ministe re Canadien des Communications dans les...

Page 30: ...Tyan Pentium II Motherboards Addendum A AMI BIOS CMOS Setup User s Guide for Intel 440FX Series PCIset Based on the 7 15 95 V6 26 Core AMIBIOS Use with AMIBCP Version 6 ...

Page 31: ...s of Microsoft Corporation Microsoft Windows Windows 95 and Windows NT are trademarks of Microsoft Corporation Weitek is a registered trademark of Weitek Corporation IBM AT VGA PS 2 OS 2 and EGA are registered trademarks of International Business Machines Corporation XT and CGA are trademarks of International Business Machines Corporation Revision History 4 3 97 Initial release ...

Page 32: ...s AMI BIOS Setup Page 3 Table of Contents 1 Introduction 4 2 Standard Setup 7 3 Advanced Setup 10 4 Chipset Setup 16 5 Power Management Setup 21 6 PCI PnP Setup 25 7 Peripheral Setup 28 8 A Few Words on Flash BIOS Upgrades 31 ...

Page 33: ... turned off The AMI BIOS Setup Utility can also be accessed by the user during the Power On Self Test POST The AMI BIOS supports the following 1 Plug and Play v 1 0A and ESCD Extended System Configuration Data 2 EPA Green PC v 1 03 3 APM Advanced Power Management v 1 via SMI System Management Interrupt 4 PCI Bus 5 DRAM EDO FPM ECC 6 Flash ROM How Data Is Configured AMIBIOS provides a Setup utility...

Page 34: ...d is installed Advanced Sets Typematic Rate and Delay Above 1 MB Memory Test Memory Test Tick Sound Hit Del Message Display System Boot Up Sequence and many others Chipset Sets chipset specific options and features Power Management Controls power conservation options PCI PnP Sets options related to the PCI bus and Plug and Play options Peripheral Controls I O Controller related options ...

Page 35: ...llowing screen represents the Main Menu of BIOS Setup types AMI BIOS Setup 1996 American Megatrends Inc Setup Security Standard Advanced Chipset Supervisor User PowerMgmt PCI PnP Peripheral Anti Virus Utility Default Detect IDE Language Original Optimal Fail safe Alt H Help ...

Page 36: ...SI drive IDE Select Type Select Auto to let AMIBIOS determine the parameters Click on OK when AMIBIOS displays the drive parameters Select LBA Mode Select On if the drive has a capacity greater than 540 MB Select Block Mode Select On to allow block mode data transfers Select 32 Bit Mode Select On to allow 32 bit data transfers Select the PIO Mode It is best to select Auto to allow AMIBIOS to deter...

Page 37: ...ation circuitry on the hard disk compensates for the physical difference in sector size by boosting the write current for sectors on inner tracks This parameter is the track number on the disk surface where write precompensation begins Landing Zone This number is the cylinder location where the heads normally park when the system is shut down Sectors The number of sectors per track MFM drives have...

Page 38: ...977 7 65535 977 17 57 MB 19 1024 7 512 1023 17 60 MB 20 733 5 300 732 17 30 MB 21 733 7 300 732 17 43 MB 22 733 5 300 733 17 30 MB 23 306 4 0 336 17 10 MB 24 925 7 0 925 17 54 MB 25 925 9 65535 925 17 69 MB 26 754 7 754 754 17 44 MB 27 754 11 65535 754 17 69 MB 28 699 7 256 699 17 41 MB 29 823 10 65535 823 17 68 MB 30 918 7 918 918 17 53 MB 31 1024 11 65535 1024 17 94 MB 32 1024 15 65535 1024 17 1...

Page 39: ...ult values set by your manufacturer unless you thoroughly understand the functions of the items you are changing Optimal Defaults The Optimal default values provide optimum performance settings for all devices and system features Fail Safe Defaults The Fail Safe default settings consist of the safest set of parameters Use them if the system is behaving erratically They should always work but do no...

Page 40: ... signal is not received immediately from the IDE drive AMIBIOS does not configure that drive AMIBIOS does not wait for 5 seconds after sending a RESET signal to the IDE drive to allow the IDE drive time to get ready again You cannot run AMIBIOS Setup at system boot because there is no delay for the Hit Del to run Setup message The Optimal default setting is Enabled and the Fail Safe default settin...

Page 41: ...ice This option sets the type of device for the fourth boot drives that the AMIBIOS attempts to boot from after AMIBIOS POST completes The settings are Disabled CD ROM IDE 0 Floptical or Floppy The Optimal and Fail Safe default settings are Disabled S M A R T For Hard Disks Set this option to Enabled to permit AMIBIOS to use the SMART System Management and Reporting Technologies protocol for repor...

Page 42: ...lt settings are On Floppy Drive Swap Set this option to Enabled to permit drives A and B to be swapped The settings are Enabled or Disabled The default settings are Disabled PS 2 Mouse Support Set this option to Enabled to enable AMIBIOS support for a PS 2 type mouse Pins 2 3 of the PS 2 Mouse Selector jumper on the motherboard must be shorted together to enable PS 2 mouse support The settings are...

Page 43: ...S 2 operating system and using more than 64 MB of system memory on the motherboard The settings are Yes or No The Optimal and Fail Safe default settings are No CPU Microcode Update Set this option to Enabled to permit the CPU to be updated online at any time The settings are Enabled or Disabled The Optimal and Fail Safe default settings are Enabled Internal Cache This option sets the type of cachi...

Page 44: ...ory The Optimal and the Fail Safe default settings are Cached C800 16K Shadow CC00 16K Shadow D000 16K Shadow D400 16K Shadow D800 16K Shadow DC00 16K Shadow These options enable shadowing of the contents of the ROM area named in the option The ROM area not used by ISA adapter cards is allocated to PCI adapter cards The settings are Setting Description Disabled The contents of the video ROM are no...

Page 45: ...ed AMIBIOS Setup can be customized AMIBIOS Setup can be customized via AMIBCP See the AMIBIOS Utilities Guide for additional information DRAM Speed ns This option specifies the RAS Access Time in nanoseconds for the EDO DRAM system memory installed in this computer The settings are 50 60 or 70 The Optimal default is 60 and the Fail Safe default is 70 Cont d ...

Page 46: ... memory If a soft correctable memory error occurs writing the fixed data back to DRAM system memory will resolve the problem Most DRAM errors are soft errors If a hard uncorrectable error occurs writing the fixed data back to DRAM system memory does not solve the problem In this case the second time the error occurs in the same location a Parity Error is reported indicating an uncorrectable error ...

Page 47: ...nabled or Disabled The Optimal and Fail Safe default settings are Enabled VGA Frame Buffer USWC Set this option to Enabled to enable the VGA video frame buffer using USWC Uncacheable Speculatable Write Combined memory The settings are Enabled or Disabled Older ISA VGA card drivers may not behave correctly if this option is not set to Disabled The Optimal and Fail Safe default settings are Disabled...

Page 48: ...d The Optimal and Fail Safe default settings are Disabled CPU To PCI Posting Set this option to Enabled to allow write operations from the CPU to be posted to the PCI bus The settings are Enabled or Disabled The Optimal and Fail Safe default settings are Enabled PCI To DRAM Pipeline Set this option to Enabled to enable the pipeline from the PCI bus to DRAM system memory The settings are Enabled or...

Page 49: ...tem will be automatically turned on after a power interruption outage The user does not need to hit the Power on switch on the case to turn on the power The settings are Enabled or Disabled The Optimal and Fail Safe default settings are Disabled USB Function Set this option to Enabled to enable USB Universal Serial Bus support The settings are Enabled or Disabled The Optimal and Fail Safe default ...

Page 50: ...is length of time expires the computer enters a power conserving state The settings are Disabled 1 min minute 2 min 3 min 4 min 5 min 6 min 7 min 8 min 9 min 10 min 11 min 12 min 13 min 14 min or 15 min The Optimal and Fail Safe default settings are Disabled Green PC Monitor Power State This option specifies the power state that the green PC compliant video monitor enters when AMIBIOS places it in...

Page 51: ...minute 2 min 3 min 4 min 5 min 6 min 7 min 8 min 9 min 10 min 11 min 12 min 13 min 14 min and 15 min The Optimal and Fail Safe default settings are Disabled Standby Timeout Minute This option specifies the length of a period of system inactivity while in Full power on state When this length of time expires the computer enters Standby power state The settings are Disabled 4 msec 8 msec 12 msec 16 m...

Page 52: ... Monitor and the computer is in a power saving state AMIBIOS watches for display activity The computer enters the Full On state if any activity occurs AMIBIOS reloads the Standby and Suspend timeout timers if display activity occurs The settings are Monitor or Ignore The Optimal and Fail Safe default settings are Ignore IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15 When set to Monit...

Page 53: ...S Setup Page 24 Power Management Setup Continued The Optimal defaults for IRQ12 and IRQ 14 are Monitor and the Optimal defaults for the rest of IRQs are Ignore However the Fail Safe defaults for all of the IRQs listed above are Ignore ...

Page 54: ... option is set to Enabled multiple VGA devices operating on different buses can handle data from the CPU on each set of palette registers on every video device Bit 5 of the command register in the PCI device configuration space is the VGA Palette Snoop bit 0 is disabled For example if there are two VGA devices in the computer one PCI and one ISA and VGA Palette Snoop Bit Action Disabled Data read ...

Page 55: ...ler is automatically disabled The settings are Disabled Auto Slot1 Slot2 Slot3 Slot4 Slot5 or Slot6 If Auto is selected AMIBIOS automatically determines the correct setting The Optimal and Fail Safe default settings are Auto This option forces IRQ 14 and 15 to a PCI slot on the PCI local bus This is necessary to support non compliant PCI IDE adapter cards DMA Channel 0 DMA Channel 1 DMA Channel 3 ...

Page 56: ...and IRQ14 and 15 are allocated to the onboard PCI IDE IRQ9 will still be available for PCI and PnP devices because at least one IRQ must be available for PCI and PnP devices The settings are ISA EISA or PCI PnP The Optimal and Fail Safe default settings are PCI PnP Reserved Memory Size This option specifies the size of the memory area reserved for legacy ISA adapter cards The settings are Disabled...

Page 57: ...The settings are Auto AMIBIOS automatically determines the correct base I O port address Disabled 3F8h 2F8h 2E8h or 3E8h The Optimal and Fail Safe default settings are Auto Onboard Serial Port2 This option specifies the base I O port address of serial port 2 The settings are Auto AMIBIOS automatically determines the correct base I O port address Disabled 3F8h 2F8h 2E8h or 3E8h The Optimal Fail Saf...

Page 58: ...imal and Fail Safe default settings are Normal The settings are Setting Description Normal The normal parallel port mode is used EPP The parallel port can be used with devices that adhere to the Enhanced Parallel Port EPP specification EPP uses the existing parallel port signals to provide asymmetric bidirectional data transfer driven by the host device ECP The parallel port can be used with devic...

Page 59: ...OS Setup Page 30 Peripheral Setup Continued Onboard IDE This option specifies the IDE channel used by the onboard IDE controller The settings are Disabled Primary Secondary or Both The Optimal and Fail Safe default settings are Both ...

Page 60: ...owing the implications may cause serious adverse effects Please do not upgrade a BIOS unless directed to do so by a qualified support technician Tyan is not able to replace mis used or damaged BIOS chips in the event of a BIOS flash failure For more information about BIOS Flash procedures BIOS replacements or BIOS settings please refer to the online documentation located on Tyan s Homepage at the ...

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