TYAN TAHOE PLUS ATX, S1686S, S1686D User Manual
TABLE OF CONTENTS
1. Introduction....................................................................... 2
1.1 Overview.................................................................2
1.2 Hardware Specifications........................................ 3
1.3 Software Specifications..........................................4
1.4 Manual Organization ............................................ 4
1.5 Manual Conventions.............................................5
1.6 CPU types ..............................................................5
2. Board Installation.............................................................. 7
2.1 Unpacking.............................................................. 7
2.2 Installation of the motherboard ............................7
2.3 S1686S/D Board Layout & Jumper Locations......8
2.4 CMOS RTC............................................................14
2.5 Installing Cables and Connectors ....................... 14
2.6 DRAM Installation ..............................................16
2.7 L2 Cache Memory/SRAM Memory...................... 17
2.8 VRM (Voltage Regulator Module)........................17
2.9 Peripheral Device Installation................................17
2.10 Connecting the Power Supply..............................17
3. CPU Installation and Removal ........................................ 18
3.1 Installation of Pentium II Active Processors..........18
3.2 Installing CPUs...................................................... 19
3.3 Installing CPU Cooling Fans................................. 19
3.4 Installation and Removal of Passive Processors ...20
4. Troubleshooting .............................................................. 23
4.1 Troubleshooting Procedures .................................23
4.2 Technical Support Procedures ..............................25
4.3 Returning Merchandise for Service.......................25
Appendix: LM78 System Hardware Monitor and LANDesk
Client Manager (LDCM)...................................................... 26
Declaration of Conformity......................................................27
Speaker Beep Codes............................................................. 28
1S1686S/D-001-02
Chapter 1: Introduction
1.1 Overview
The S1686S/D system board is a quality, high performance, single
(S1686S) or dual (S1686D) processing motherboard designed for Intel's
Pentium II microprocessors. This motherboard utilizes Intel's 440FX PCI
series chipset and supports CPU speeds of 233 to 300MHz. The S1686S/D, will
also support two Pentium Pro processors with Tyan riser cards (M2020).
The S1686S/D's PCI Local Bus provides high performance capabilities
that are ideal for a wide range of demanding applications such as: CAD, CAM,
CAE, networking, multi-user environments, database management, desktop
publishing, image processing, 3D animation and video production.
This integrated system board achieves high reliability with numerous
features and yet is small enough to be supported in an "ATX" form-factor.
Some of the features included are: on-board dual channel PCI PIO (Mode 3 &
4), Multiword DMA (Mode 2) IDE, on-board floppy controller, and on-board
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. Some of these new features include the following:
1. LM78 System Monitoring (See Appendix for details, S1686S/D
ONLY)
2. Power off through software in Windows 95: This function allows the
user to turn off the ATX power supply and shut down the system by selecting
"Shut down" in the Start menu without hitting the power on/off switch on the
case.
3. Recovery after Power Interruption: When this function is set to
"Enabled" in the CMOS Setup, the power of the system will be automatically
turned on as soon as the power is recovered after an interruption (outage). The
user does not need to hit the power on/off switch on the case to turn on the
system power.
4. Wake on LAN: The S1686S/D provide the capability for the user to
turn on the system through another machine in the Local Area Network.
5. An on-board 12V to 5V Convertor gives support for keyboards with
built-in speakers, such as NMB Concert Master Keyboards.
For more information about your S1686S/D board, please refer to Tyan
Computer's web site located at http://www.tyan.com.
2S1686S/D-001-02 http://www.tyan.com
1.2 Hardware Specifications/Features
The S1686S/D board is designed for the demanding end-user who wants to
accomplish complicated tasks in a user-friendly environment. To achieve this
purpose, the main board includes the following features:
CPU Information • One or Two Pentium II Processor slots
• Intel Pentium II 233 MHz through 300 MHz
(233MHz, 266 MHz, 300 MHz) CPUs.
• Supports Pentium Pro 150-200 MHz (150
MHz, 166MHz, 180MHz, 200MHz) processors
• Single/Dual on-board CPU fan headers (+12V)
• On-board Case Fan header (+12V)
Chipset Information • Intel 440 FX series (Natoma) chipset.
• 25/30/33 MHz PCI bus
• Two PCI Bus Mastering EIDE channels (up to
22MB/sec DTR)
• PIO Mode 3 & 4 (up to 17MB/sec DTR)
• Support for up to 1GB (1024MB) system
memory
System RAM • Eight-72 pin SIMM sockets (4 double banks)
• Supports 5V or 3.3V memory SIMMs
• Supports EDO (Extended Data Out), FPM
• (Fast Page Mode), ECC (Error Correcting
Code) or Parity checking
System I/O • Two PCI Bus Mastering EIDE channels
Expansion • Five 32-bit PCI expansion slots
Supports EIDE CD-ROMs
• Two floppy drives (up to 2.88 MB)
• Two ATX serial ports support 16550 UART's
• One ATX ECP/EPP parallel port
• Two USB Ports
• InfraRed port (for use with 3rd party manufac
tured software and hardware)
• Three 16-bit ISA slots (1 shared/ 7 usable)
3S1686S/D-001-02
1.3 Software Specifications
BIOS • Award or AMI Plug 'n' Play flash BIOS
• Deep green and Energy Star compliant.
• ATX CMOS setup, BIOS/CHIPSET setup
and hard disk utility included.
• Year 2000, DMI, ACPI compliant.
• Support for easy BIOS upgrades with flash
chip.
Operating System • Operates with MS-DOS, Windows 3.x, Win
dows for Workgroups, Windows 95, Windows
NT, OS/2, Novell Netware, and SCO Unix.
• Tyan is also a Solaris certified manufacturer.
1.4 Manual Organization
Chapter 1 "Introduction" describes the features and performance of the
S1686S/D motherboard.
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 instructions on the installation and removal of the Pentium II--Active and
Passive CPU's.
If you encounter any problem, refer to Chapter 4 "Trouble-shooting",
which describes trouble-shooting procedures for the system.
4S1686S/D-001-02 http://www.tyan.com
Refer to Addendum A (AMI BIOS Setup) and Addendum B (Award
BIOS Setup) for the BIOS Setup requirements and the CMOS Configuration
Information, including instructions to change the password, to format a hard
disk, and to troubleshoot CMOS errors. Both AMI and Award BIOS documents are also available in the ADOBE Acrobat format. Please refer to our
Web page at http://www.tyan.com for these files.
1.5 Manual Conventions
In this manual, the following terms are used in reference to setting up jumpers:
1. When the term "close" is used, the pin (pins) specified for the jumper should
be connected (closed), and the circuit of the connecting pins will be shorted.
2. When the term "open" is used, the pin (pins) specified for the jumper should
not be connected, and the circuit of the connecting pins will not be shorted.
1 2 3 4
Pins 1&2: Open
Pins 3&4: Closed
1.6 CPU types
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 types of processors lies in their cooling
methods. The Active Processor is equipped with a heatsink and cooling fan,
and the Passive Processor is equipped with a heat sink only. These two types of
CPUs provide the user with the same function, and should be installed in the
"Pentium II" slots on the motherboard. (Refer to Chapter 3 for the installation
and removal of Pentium II Processors).
NOTE ON S1686D: This motherboard is designed for Dual processors, but it
will accommodate a single CPU. However, when a single CPU configuration is
chosen, the Pentium II CPU should be installed in the Pentium II Primary slot
as mentioned in Chapter 3.
5S1686S/D-001-02
Pentium II Boxed (Active) CPU
Shown with Power Connector for Fan
Pentium II (Passive) CPU
Shown with Heatsink
6S1686S/D-001-02 http://www.tyan.com
Chapter 2: Board Installation
2.1 Unpacking
2.1.1. Item Checklist
The motherboard package should contain the following:
• S1686S/D Motherboard • Motherboard User's manual
• One IDE 40 pin cable • BIOS User's manual
• One 34 pin floppy cable • One or Two CPU Retention Modules
2.1.2. Precautionary measures before handling the motherboard
Since the motherboard contains sensitive electronic components which can
easily be damaged by static electricity, the motherboard should be left in its
original packaging until it is ready to be installed.
Before you open the carton of your motherboard, do the following:
1. Make sure that you stand on an Anti-static mat. (Do not stand on a rug or
carpet.)
2. It is also strongly recommended that you wear an anti-static strap. (Antistatic 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. Proper handling of the motherboard
After opening the S1686S/D motherboard carton, remove the board by holding
its edges. Place it on a grounded anti-static surface with the component side up.
Inspect the board for damage. Do not touch the bottom of the board.
DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED!)
(Note:
2.2. Installation of the Motherboard
You are now ready to install your motherboard. The mounting hole pattern of
the S1686S/D matches the ATX system board specifications. Please install the
board in the chassis designed for a standard ATX board form factor.
7S1686S/D-001-02
2.3.1 Motherboard Layout
Mouse (Top)
KB (Bottom)
1 (top)
USB
2 (bottom)
Com1
Parallel Port
Com2
LM-78
•••
1
•••
SMC
J46
r
KB Controlle
1
•••
J20
CPU Fan CPU Fan
1
•••
82441FX
Removed
On S1686S
82442FX
Secondary Pentium II Slot
PCI Slot 1
J30
J36
PCI Slot 2
Primary Pentium II Slot
1
J37
••••
PCI Slot 3
PCI Slot 4
PCI Slot 5
ISA Slot 1
J49 J50
•••
•••
ISA Slot 2
J23
J31 J32
••
••
J33 J34
PIIX3
••
••
Power connector
JP1
•••
SIMM 1
SIMM 2
••
••
J24 J25
Floppy
1
Primary IDE
1
Secondary IDE
1
I/O
APIC
• • • • • • • • • •
• • • • • • • • • •
• •
• •
• •
• •
SIMM 3
SIMM 4
J26 J27
J44
J15, J16J11, J12, J13, J14
SIMM 5
SIMM 6
••
••
Case Fan
••
RTC
J6
• •
• •
SIMM 7
SIMM 8
1
IR2
••••
1
J29
• • • • • • • • • • • • • • • • • • • • • • • • • • •
1
J19
•••
(For more information about this Motherboard, please visit our Web Page
and Clickable motherboards at http://www.tyan.com/html/faq.html.)
ISA Slot 3
J60
8S1686S/D-001-02 http://www.tyan.com
2.3.2 Summary of Jumper Settings
Refer to the following table for quick reference of jumper settings:
Jumper # Assignments Pg. #
J17 Keyboard Connector P10
J18 PS2 Mouse Connector P10
J20, J23 CPU Fan (Pin 2 is +12V) P10, P21
J19 CHS Fan (Chassis Fan) P10
J11, J12, J37 Bus Speed P12
J13-J16, J24-27 DRAM Voltage Select P12
J22 Universal Serial Bus P10
J29 Pins 1,2: Power on, Pins 3,4: EXT SMI
Pins 8-10: IR2 P14,15,16
Pins15,16: IDE LED, Pins18-20: Power LED
Pins22,23: Reset, Pins24-27: Speaker
J30, J36 COM / IR Select P13
J31-34 CPU Speed Settings P12
J49,50 LM78 IRQ Select P13
J44 CMOS Reset P12,P17
JP1 Wake-on-LAN Connector P14
Block J29 Pin Assignments
Power on: Pins 1,2 (close)
(Cover Pins1&2 with a jumper cap to short the circuit between Pins.)
EXTSMI: Pins 3,4(close)
IR2: Pins8-10(close)
(Cover Pins3,4 with a jumper cap to short the circuit between Pins.)
(Cover Pins8-10 with a jumper cap and short the circuit between pins.)
IDE LED: Pins 15,16 (close)
Power LED: Pins 18-20 (close)
(Cover Pins15,16 with a jumper cap and short the circuit between pins.)
9S1686S/D-001-02
(Cover Pins18-20 with a jumper cap and short the circuit between pins.)
Reset: Pins 22, 23 (close)
(Cover Pins22,23 with a jumper cap to short the circuit between pins.)
Speaker:Pins24-27
(Cover Pins24-27 with a jumper cap to short the circuit between Pins.)
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