TYAN TAHOE-A ATX, S1684SA TAHOE-A, S1684S TAHOE User Manual

1S1684S/SA-001-02

TABLE OF CONTENTS

1. Introduction....................................................................... 3

1.1 Overview................................................................3

1.2 Hardware Specifications...................................... 4

1.3 Software Specifications........................................ 5

1.4 Manual Organization ........................................... 5

1.5 Manual Conventions........................................... 6

1.6 CPU Prototypes .................................................. 6

2. Board Installation............................................................... 8

2.1 Unpacking.............................................................. 8

2.2 Installation of the motherboard .............................8

2.3 S1684S/SA Board Layout & Jumper Locations....9

2.4 CMOS RTC...........................................................15

2.5 Installing cables and Connectors...........................15

2.6 DRAM Installation ................................................17

2.7 L2 Cache Memory/SRAM Memory...................... 18

2.8 VRM (Voltage Regulator Module)....................... 18

2.9 Peripheral Device Installation................................18

2.10 Connecting the Power Supply..............................18

3. CPU Installation and Removal .........................................19

3.1 Installing Pentium II Boxed (Active) Processors.. 19

3.2 Installation of the Cooling Fan ........................... 20

3.3 CPU Removal (Pentium II Active CPUs)............20

3.4 Install/Remove Pentium II Passive Processor(s).21

4. Troubleshooting................................................................. 24

4.1 Troubleshooting Procedures................................24

4.2 Technical Support Procedures............................. 26

4.3 Returning Merchandise for Service.....................26

5. Declaration of Compliance................................................ 27

6. Speaker Beep codes......................................................... 28

2S1684S/SA-001-02 http://www.tyan.com

Chapter 1: Introduction

1.1 Overview

The S1684S/SA* system board--TAHOE -(A)* ATX is a quality, high

performance motherboard designed for Intel's latest generation of Pentium II
microprocessors. This motherboard utilizes Intel's 440FX PCI series chipset
and supports Pentium II CPU speeds of 233MHz to 300MHz. The S1684S/SA*
will also support the Intel Pentium Pro Processors with a Tyan Riser Card
(M2020).

The S1684S/SA'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, yet it 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.

The S1684S/SA board is built to be both flexible and expandable. With I/
O and drive controller support built on-board, the four 32-bit PCI Bus Master
and four ISA slots (one shared/seven usable slots) are available for add-on
expansion cards.

In order to provide you with more detailed information about board
components and their functions, Tyan has designed the Web Page and clickable
motherboards for your reference. Please refer to Tyan Computer's web site
located at http://www.tyan.com for more information about your S1684S/SA*
board. Here you will also find information on all of Tyan's products along with
FAQ's, distributors, drivers and CMOS setting explanations.

Note on S1684SA model (with sound)
(* The S1684S motherboard does not have the built-in Vibra 16 Audio Feature.

The S1684SA model is equipped with the Vibra 16 Audio System. Along with
your Vibra 16 CL/X Drivers, the 1684SA motherboard also has a CD-ROM
Connector, Tel/Modem Connector, Sound Port and WaveTable Connector on-

board. Please refer to the Motherboard Layout on Page 10 for locations. )

Please refer to Addendum C for more information on installing, upgrading and
configuring your on-board sound chip and its features.

3S1684S/SA-001-02

1.2 Hardware Specifications/Features

The S1684S/SA board is designed for the demanding end-user who wants to
accomplish complicated tasks in a user-friendly environment. To achieve this
purpose, the motherboard includes the following features:

CPU Information • One Pentium II Processor slot

• Intel Pentium II 233 MHz through 300 MHz
(200, 233, 266, 300 MHz) CPUs

• Supports 150-200 MHz 150,166,180,200MHz)
Pentium Pro Processors

• VRM (Voltage Regulator Module) on board

• On-board CPU fan header

Chipset Information • Intel's Pentium II (440 FX Natoma) chipset

25/30/33 MHz PCI bus

• Dual channel PCI Busmastering ports (up to
22Mb/sec DTR)

• Support for up to 768MB System RAM

System RAM • Six 72-pin SIMM slots/3 banks

• Supports 5V or 3.3V memory

• Supports EDO (Extended Data Out) DRAMs

• Supports FPM (Fast Page Mode) DRAMs

• Supports ECC (Error Correcting Code) or
Parity checking

On-board Sound (1684SA model ONLY)

Expansion • Four 32-bit PCI Bus Master slots

• Built-in Creative Labs Vibra 16 sound with
software/hardware upgradeability to wavetable
synthesis

• Telephony / Answering machine capabilities

• Four 16-bit ISA Bus slots (1 shared / 7 usable)

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PCI EIDE/Super I/O

• Dual channel PCI Busmastering ports
(supports up to 4 HDD/CDROM drives)

• Two 16550 Serial ports

• One ECP/EPP Parallel

• Twin USB ports (up to 126 devices)

• Two floppy ports (up to 2.88Mb)

1.3 Software Specifications

BIOS Award or AMI BIOS Plug 'n' Play Flash BIOS

Deep Green and Energy Star compliant.

Operating System Operates with MS-DOS, Windows 3.x, Windows

for Workgroups 3.x, Windows 95, Windows, OS/
2, and SCO Unix.

Tyan is also a certified under Solaris

1.4. Manual Organization

Chapter 1 "Introduction" describes the features and performance of the
S1684S/SA 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 instructions on
installation and removal of the latest Pentium II--Active and Passive CPUs.

If you encounter any problem, refer to Chapter 4 "Trouble-shooting", which
describes trouble-shooting procedures for the system.

5S1684S/SA-001-02

Refer to Addendum A (AMI BIOS CMOS Setup) and Addendum B
(Award BIOS CMOS Setup) for the 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 Setup documents are also available in the Adobe Acrobat
format. Please refer to the Web Page located at ftp://ftp.tyan.com/
s1684saa.pdf for AMI and ftp://ftp.tyan.com/s1684sab.pdf for Award
BIOS information.

1.5. Manual Conventions

In this manual, the following terms are used in reference to setting up
jumpers:

1. When the term "Close" or "On" 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", "Shorted", or "Off" 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 "Boxed"
(or Active) 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 Boxed (Active) Processor is equipped with
a CPU cooling fan and heatsink built in with the CPU, 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 S1684SA board. (Refer to Chapter 3 for the
installation and removal of Pentium II processors.)

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Pentium II Boxed (Active) CPU

Shown with Power Connector for Fan

Pentium II (Passive) CPU

Shown with Heat-sink

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Chapter 2: Board Installation

2.1 Unpacking

2.1.1. Item Checklist

The mainboard package should contain the following:

S1684S: • S1684S/SA motherboard • User's manual

• One IDE 40 pin cable • One 34-pin floppy cable

• BIOS User's manual • One Retention module

S1684SA(adds): • Sound Addendum C • Tyan Vibra 16 CD-ROM

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 kept in its
original packaging until time of installation.

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 your local 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 follow the above procedure whenever you
handle the motherboard or its components.

2.1.3. Proper handling of the motherboard

After opening the 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. (Note:

DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAM­AGED!)

2.2 Installation of the motherboard

You are now ready to install your motherboard. The mounting hole pattern
of the board matches the ATX system board specifications. Please install

8S1684S/SA-001-02 http://www.tyan.com

PS2

USB

Com1

J8

Parallel

J4

J3

• • • •

Com2

J5

*J6

*S3 S2 S1

*Game port

S1 = Line Out
S2 = Line In
S3 = Mic In

U4

*Sound

Chip

KB (Lower)
Mouse(UP)

Power connector

J12

• • •

J13

• • •

•

*CD ROM2

• • •

*CD ROM1

• • • •

*TEL/MDM CON

PCI Slot 1

PCI Slot 2

• • • •

J14

• • • •

*Wavetable connector

PCI Slot 3

PCI Slot 4

ISA Slot 1

ISA Slot 2

J17

SMC

• • • •

• • • •

•

J21

•

J22

J25

FAN CONN.

• •

• •

••• •••

J24

82441FX

82442FX

Pentium II Slot

• • •

J29

PIIX3

• •

J28

J53

• •

J30

J31

• •

• •

J32

• •

• •

J33

• •

J34

• •

J35

SIMM 1

Floppy

1

J37 J38

• • • •

Primary IDE

1

Secondary IDE

1

J39

Add-in HD LED

• •

J47

J54

• •

SIMM 2

SIMM 3

J41

J42

J40

• •

J45

J46

• •

J48

• •

• •

SIMM 4

SIMM 5

SIMM 6

J43

• •

• •

J44

• •

• •

• •

• •

J49

• • • • •
Keylock

CON7

• • • •

ALT IR

KB Controller

(For more information about this motherboard, please visit our Web Site
and clickable motherboards at http://www.tyan.com/html/faq.html.)

* Features ONLY found on S1684SA model: Wavetable connector, CD-ROM
connector, Tel/Modem connector, J6 port connectors.

ISA Slot 3

ISA Slot 4

J36

• • •

RTC

1684S/SA Motherboard Layout

9S1684S/SA-001-02

J50

• • • • • • • • • • • • • • • • • • • • • • • • • •

J51

• •

J52

• •