Acer 486 Specifications download pdf (Page 16)

8 PCA-6143P User's Manual

Safety precautions

Follow these simple precautions to protect yourself from harm and

your PC from damage.

1. To avoid electric shock always disconnect the power from your PC

chassis before you work on it. Don’t touch any components of the

CPU card or other cards while the PC is on.

2. Disconnect power before making any configuration changes. The

sudden rush of power as you connect a jumper or install a card

may damage sensitive electronic components.

3. Always ground yourself to remove any static charge before you

touch your CPU card. Be particularly careful not to touch the chip

connectors. Modern integrated electronic devices, especially CPUs

and memory chips, are extremely sensitive to static electric

discharges and fields. Keep the card in its anti-static packaging

when it is not installed in the PC and place it on a static dissipative

mat when you are working on it. Wear a grounding wrist strap for

continuous protection.

Jumper settings

This section tells how to set the jumpers to configure your card. It

gives the card default configuration and your options for each jumper.

After you set the jumpers and install the card, you will also need to

run the BIOS Setup program (discussed in Chapter 5) to configure the

serial port addresses, floppy/hard disk drive types and system operat-

ing parameters. Connections, such as hard-disk cables, appear in

Chapter 3.

Card default setting

We set the card’s jumpers at the factory for the most popular configu-

ration. If this configuration matches your needs, you may not need to

change the jumpers at all. The default configuration is as follows:

• Watchdog invokes system reset • Color display is attached

• Parallel port IRQ7, DRQ1, DACK1 • Bypass POST (JP14)

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Acer 486 Specifications Page 16