Acer 9000V Manuel utilisateur

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System Board

System Board 1-1

1.1 Features

The M9A is a dual-processor system board that supports the Intel

P54C and P55C CPUs. The board contains an exclusive slot for the

CPU board that carries the 321-pin zero-insertion force (ZIF) CPU

sockets plus the embedded 512-KB pipeline burst second-level

cache.

This high-performance 64-bit system board utilizes both the EISA and

the PCI local bus architecture. Two EISA, four PCI bus slots, and one

EISA/PCI shared slot reside on the board to allow installation of either

master or slave devices.

The system board has four DRAM banks composed of eight 72-pin

SIMM sockets that accommodate both fast-page mode and EDO

(extended data output) SIMMs. The sockets support a total of 512-

MB system memory using 64-MB SIMMs.

A 50-pin Fast SCSI-II interface and a 68-pin Wide SCSI interface

come with the system board to connect SCSI devices. Standard

external I/O interfaces include two 9-pin serial ports, one parallel port,

a video port, and keyboard and mouse ports.

The system board supports two optional features that allow better

server management, the ASM Pro and the remote diagnostic

management (RDM). The ASM Pro detects system problems, such

as CPU thermal condition, 5V/3.3V detection, and PCI bus utilization

calculation. The RDM allows execution of a diagnostic program from

a remote station to fix the detected problems or to reboot the system.

1-2 User’s Guide

1.2 Major Components

The system board has the following major components:

•Four DRAM banks composed of eight 72-pin SIMM sockets that

support single- and double-density 60 ns SIMMs

•CPU board slot

•Four PCI, two EISA bus slots, and one EISA/PCI shared slot

•256-KB Flash ROM for system BIOS

•System clock/calendar plus 8 KB extended CMOS RAM with

battery backup

•50-pin Fast SCSI-II and 68-pin Wide SCSI interfaces

•Two 24-pin RDM interfaces

•IDE hard disk and diskette drive interfaces

•Onboard VRAM and VRAM sockets for video memory upgrade

•Power connector for 350-watt or 420-watt switching power supply

•Super I/O, SCSI, VGA, memory, and Advanced Server

Management (ASM) controller chipsets

•External ports:

•Two 9-pin serial ports

•PS/2-compatible keyboard port (optional AT-keyboard port)

•PS/2-compatible mouse port

•Parallel port

•Video port

System Board 1-3

1.3 Layout

Figure 1-1 shows the system board components.

1 COM1

2 COM2

3 Mouse port

4 Keyboard port

5 Video port

6 Parallel port

7 Video upgrade sockets

8 CPU board slot

9 PCI slots

10 EISA slots

11 Real-time clock

12 Flash ROM BIOS

13 Buzzer

14 Narrow SCSI connector

15 Wide SCSI connector

16 SIMM sockets

17 Fan connector 1 (FA1)

18 Fan connector 2 (FA2)

19 Fan connector 3 (FA3)

20 420W 5V standby power connector

21 Power connector

22 Power connector

23 Video RAM

24 RDM connectors

Figure 1-1 System Board Layout

8910

19 18 17

1-4 User’s Guide

1.4 Jumpers and Connectors

1.4.1 Jumper and Connector Locations

Figure 1-2 shows the jumper and connector locations on the system

board.

Figure 1-2 System Board Jumper and Connector Locations

Jumpers are prefixed “JP”. Connectors are

prefixed “CN” and “SW.

The blackened pin of a jumper represents

pin 1.

System Board 1-5

1.4.2 Jumper Settings

Table 1-1 lists the system board jumpers with their corresponding

settings and functions.

Table 1-1 System Board Jumper Settings

Jumper Setting Function

Password Security

JP1 1-2

2-3*Check password

Bypass password

BIOS Type

JP2 1-2*

2-3 Acer

OEM

SCSI Termination

JP3 1-2

2-3* Terminator always set to ON

Use SCSI Setup Utility to set

terminator to ON or OFF

SCSI Selection

JP4 1-2*

2-3 Wide SCSI

Standard

Hardware Reset

JP5 1-2

2-3*

3-4

Software shutdown enabled

Hardware reset enabled

Hardware reset button connector

Sound Feature

JP6 1-2*

2-3 Buzzer

Speaker

SCSI Feature

JP7 1-2*

2-3 Enabled

Disabled

VGA Feature

JP8 1-2*

2-3 Enabled

Disabled

*Default setting

1-6 User’s Guide

1.4.3 Connector Functions

Table 1-2 lists the different connectors on the system board and their

respective functions.

Table 1-2 Connector Functions

Connector Function

CN1 Power connector

CN2 Power connector

CN3 Backplane board HDD status connector

CN5 IDE hard disk connector

CN6 RDM connector

CN7 RDM connector

CN8 Diskette drive connector

CN11 68-pin Wide SCSI connector

CN12 50-pin Fast SCSI-II connector

CN13 RDM cable and LED board connector

CN14 Hard disk LED connector

CN15 Power LED connector

CN16 Speaker connector

CN17 420W 5V standby power connector

CN18 200W 5V standby power connector

SW1 NMI switch

System Board 1-7

1.5 ESD Precautions

Always observe the following electrostatic discharge (ESD)

precautions before installing a system component:

1. Do not remove a component from its antistatic packaging until

you are ready to install it.

2. Wear a wrist grounding strap before handling electronic

components. Wrist grounding straps are available at most

electronic component stores.

Do not attempt the procedures described in

the following sections unless you are a

qualified technician.

1.6 Memory Upgrade

The system board comes with eight 72-pin SIMM sockets that support

4-MB and 16-MB single-density SIMMs as well as 8-MB and 32-MB

double-density SIMMs for a total system memory of 256-MB. The

sockets support both the fast page mode and EDO 60 ns SIMMs.

See Table 1-3 for a list of some possible memory configurations.

1.6.1 Rules for Adding Memory

•Use only one type of SIMM in a given bank. You may combine

different types of SIMMs for a memory configuration as long as

the SIMMs in each bank are of the same type.

•You may use the memory banks (Bank0 ~ Bank3) in any order.

•Always install SIMMs in pairs. For example, for a total memory

of 16 MB, install two 8-MB SIMMs in a bank. You can not use a

16-MB SIMM alone for a 16-MB memory.

1-8 User’s Guide

1.6.2 Memory Configurations

Table 1-3 Memory Configurations

Bank0 Bank1 Bank2 Bank3 Total

S1 S2 S3 S4 S5 S6 S7 S8 Memory

8 MB 8 MB 16 MB

16 MB 16 MB 32 MB

32 MB 32 MB 64 MB

64 MB 64 MB 128 MB

8 MB 8 MB 16 MB 16 MB 48 MB

8 MB 8 MB 32 MB 32 MB 80 MB

16 MB 16 MB 32 MB 32 MB 96 MB

64 MB 64 MB 32 MB 32 MB 192 MB

8 MB 8 MB 16 MB 16 MB 48 MB

8 MB 8 MB 16 MB 16 MB 16 MB 16 MB 80 MB

8 MB 8 MB 16 MB 16 MB 32 MB 32 MB 112 MB

8 MB 8 MB 16 MB 16 MB 32 MB 32 MB 64 MB 64 MB 240 MB

8 MB 8 MB 8 MB 8 MB 16 MB 16 MB 16 MB 16 MB 96 MB

8 MB 8 MB 8 MB 8 MB 32 MB 32 MB 32 MB 32 MB 160 MB

16 MB 16 MB 16 MB 16 MB 32 MB 32 MB 32 MB 32 MB 192 MB

32 MB 32 MB 32 MB 32 MB 64 MB 64 MB 64 MB 64 MB 384 MB

8 MB 8 MB 8 MB 8 MB 8 MB 8 MB 8 MB 8 MB 64 MB

16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 128 MB

32 MB 32 MB 32 MB 32 MB 32 MB 32 MB 32 MB 32 MB 256 MB

64 MB 64 MB 64 MB 64 MB 64 MB 64 MB 64 MB 64 MB 512 MB

The above configurations are only some of

the available memory combinations. You

can use other combinations as long as you

follow the rules for upgrading memory in

section 1.6.1.

System Board 1-9

1.6.3 Installing a SIMM

Follow these steps to install a SIMM:

1. Carefully slip a SIMM at a 45°angle into a socket making sure

that the curved edge indicating the pin 1 of the SIMM matches

pin 1 of the socket.

A SIMM fits only in one direction. If you slip

in a SIMM but would not completely fit, you

may have inserted it the wrong way.

Reverse the orientation of the SIMM.

2. Gently push the SIMM to a vertical position until the pegs of the

socket slip into the holes on the SIMM, and the holding clips lock

the SIMM into position. The SIMM should be at a 90°angle

when installed.

Figure 1-3 Installing a SIMM

Hole

Peg

Pin 1 Indicator

(curved edge)

1-10 User’s Guide

1.6.4 Removing a SIMM

Follow these steps to remove a SIMM:

1. Press the holding clips on both sides of the SIMM outward to

release it.

2. Move the SIMM to a 45°angle.

3. Pull the SIMM out of the socket.

Figure 1-4 Removing a SIMM

Holding Clip

Ce manuel convient aux modèles suivants

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