Acer AcerPower 6200 Manuale utente

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System Board

System Board 1-1

The V62X is a high-performance system board that utilizes the new

Intel Pentium II processor. This processor has a built-in MMX

(Multi-Media Extensions) technology that makes the system capable of

handling and enhancing the performance of 32-bit applications and

multimedia functions.

The system board supports PnP (Plug-and-Play) and power

management functions. In addition, it also offers the hardware monitor

function. This DMI (Desktop Management Interface) feature enables

you to monitor the system resources of your PC or of systems in a

network.

For expansion, the system board integrates in its design three ISA and

four PCI slots. It also has a SCSI (Small Computer System Interface)

/LAN (Local Area Network) interface to support SCSI devices and

network functions. The six SIMM (Single In-line Memory Module)

sockets on board allow you to upgrade the system memory to a

maximum of 384 MB.

Notice that the board does not come with an external second-level

cache. This is because the second-level cache is already integrated in

the Pentium II CPU card. The CPU card may come with 256-KB or

512-KB second-level cache size.

The board comes with standard I/O interfaces such as two UART

16C550 serial ports, a parallel port with SPP (Standard Parallel

Port)/ECP (Extended Capabilities Port)/EPP (Enhanced Parallel Port)

feature, PS/2 keyboard and mouse ports. The board also includes a

USB (Universal Serial Bus) interface to enable the system to support

additional peripherals.

1-2 User’s Guide

1.1 Major Features

The system board has the following major features and components:

•Supports Intel Pentium II processor running at 233 or 266 MHz

•256/512-KB PBSRAM (Pipelined-burst SRAM) second-level

cache (incorporated in the CPU card)

•Six SIMM sockets that accepts FPM (Fast Page Mode) and EDO

(Extended Data Out) RAMs for memory upgrade

•Onboard PCI local bus IDE controller

•Onboard 256K Flash BIOS ROM

•Three ISA and four PCI slots for future expansion

•SCSI and Ethernet combo card interface

•Two PCI enhanced IDE interfaces that support up to four IDE

devices

•External ports:

•PS/2 keyboard and mouse ports

•Two buffered high-speed serial ports

•One SPP/ECP/EPP high-speed parallel port

•Two USB ports

•Power management features

•APM v1.2 (Advanced Power Management)-compliant BIOS

•API (Application Program Interface) feature

•ATA (Advanced Technology Attachment)-compliant hard disk

power saving feature

•PnP (Plug-and-Play) feature

•Windows 95 software shutdown support

•ADM (Advanced Desktop Manager) hardware monitor function

•ATX form factor

System Board 1-3

1.2 Board Layout

Figure 1-1 shows the locations of the system board major

components.

1 72-pin SIMM sockets

2 3.3V regulator

3 1.5V regulator

4 Pentium II connector

5 PCI local bus IDE controller

6 SCSI/LAN card slot

7 Ultra I/O controller

8 Buzzer

9 ISA slots

10 PCI slots

11 Flash BIOS ROM

12 COM1/2 ports

13 Printer port

14 PS/2 mouse port

15 PS/2 keyboard port

16 USB ports

Figure 1-1 System Board Layout

5 6 7

2 3

1-4 User’s Guide

1.3 Jumpers and Connectors

1.3.1 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

The blackened pin of a jumper or a connector

represents pin 1.

System Board 1-5

1.3.2 Jumper Settings

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

settings and functions.

Table 1-1 Jumper Settings

Jumper Setting Function

Power On Setting

(only for S/W power supply)

JP1 1-2

2-3 *Test mode

Normal mode

CPU select

JP3, JP4, JP5 Jumpers

JP3 JP4 JP5 CPU

1-2 1-2 1-3, 2-4 Pentium Pro

2-3 * 2-3 * 3-5, 4-6 * Pentium II

ROM Select

JP6 1-2

2-3

Open *

EPROM

Flash EEROM & 28F001

29EE010/020

Frequency Select

SW1 Switch No.

1 2 Host Clock PCI Clock

On On Reserved Reserved

Off On 60 MHz 30 MHz

On * Off * 66 MHz 33 MHz

Off Off XIN/2 XIN/4

Password Check

SW1 (Switch No. 3) On *

Off Bypass password

Check password

BIOS Logo

SW1 (Switch No. 4) On

Off * OEM BIOS

Acer BIOS

*Default setting

1-6 User’s Guide

Table 1-1 Jumper Settings (continued)

Jumper Setting Function

Core/Bus Ratio

SW1 Switch No.

5 6 7 8 Core/Bus Ratio

On On On On 2

On On Off On 3

On*On*On*Off* 4

On On Off Off 5

On Off On On 2.5

On Off Off On 3.5

On Off On Off 4.5

On Off Off Off 5.5

OffOnOnOn 6

Off On Off On 7

OffOnOnOff 8

Off Off On On 6.5

Off Off Off On 7.5

Off Off On Off 1.5

Off Off Off Off 2

Off On Off Off Reserved

System Board 1-7

1.3.3 Connector Functions

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

respective functions.

Table 1-2 Onboard Connectors

Connector Function

CN1 Power connector

CN3 USB port(s)

CN4 PS/2 keyboard port

CN5 In-Target Probe (ITP) debug port

CN6 PS/2 mouse port

CN7 Parallel/printer port

CN9 COM1/2 port(s)

CN10 HDD channel 2 connector

CN11 HDD channel 1 connector

CN12 InfraRed (IrDA) connector

CN13 FDD connector

CN14 Multifunction connector

Pin No. Function

2-6 Power LED

7-8 Reset

1-3 Speaker

JP2 Standby power cable connector

JP8 Software power control connector

JP7 HDD LED connector

1-8 User’s Guide

1.4 ESD Precautions

Always observe the following electrostatic discharge (ESD)

precautions before installing a system component:

1. Do not remove a component from its anti-static 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.

1.5 Pre-installation Instructions

Always observe the following before you install a system component:

1. Turn off the system power and all the peripherals connected to

the unit before opening it.

2. Open the system according to the instructions in the housing

installation manual.

3. Follow the ESD precautions in section 1.4 before handling a

system component.

4. Remove any expansion boards or peripherals that block access

to the SIMM sockets or CPU socket.

5. See the following sections for specific instructions on the

component you wish to install.

System Board 1-9

Do not attempt the procedures described in

the following sections unless you are a

qualified service technician.

1.6 Pentium II Processor

The board supports the Pentium II processor - a module that consists

of a Pentium Pro technology-based CPU and a second-level cache. It

utilizes the new enclosed packaging technology called S.E.C (single-

edge contact) cartridge, that allows the second-level cache to remain

tightly coupled to the processor. It is capable of increasing the

performance of 32-bit software and multimedia applications

The Pentium II processor also supports the following features:

•64-bit Pentium Pro technology-based CPU running a 233 or 266

MHz

•MMX technology support for multimedia functions

•32-KB internal cache size

•256-/512-KB write-back second-level cache size

•Non-blocking architecture to prevent CPU stalls during cache,

memory and I/O accesses

1-10 User’s Guide

1.6.1 Installing a Pentium II Processor

Observe the ESD precautions when installing

or removing a system component.

Follow these steps to install a Pentium II processor:

1. Place the retention mechanism over the CPU connector on the

system board. Secure it with the screws that came with the

package.

Figure 1-3 Installing the Retention Mechanism

2. Remove the Pentium II processor from its protective packaging.

Make sure that the latches on the sides of the module are not

pressed.

3. With the processor card golden fingers pointing downward, align

the processor to the posts of the retention mechanism.

4. Lower the processor into to the CPU connector on the system

board until the golden fingers touch the connector.

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