Owner`s manual

Page 2-4 Chapter Two

Eagle 250 Owner's Manual, Revision 01

As shown, the back panel includes connectors for the serial ports (where you plug in terminals, printers,

and modems), an Ethernet connection (for connecting the Eagle 250 to a computer network, and an

external SCSI connector (for a disk, tape, or CD-ROM drive).

TURNING THE COMPUTER ON

While you will probably leave your computer running most of the time, you will need to turn it on from

time to time. To do so, follow these steps:

Turn on all of the terminals and other devices connected to the computer’s back panel. You don’t

need to turn on other computers or devices which are attached to the network.

Press the power button at the top right of the front panel.

After you turn the computer on, it automatically “boots” the AMOS operating system: it loads the AMOS

programs from the disk drive into memory, determines what kind of devices are attached to the computer

by reading a special file called the system initialization file, and prepares the computer to run your

programs.

While AMOS is booting, you see a succession of codes on the front panel status display (see Figure 2-1),

then the AMOS license agreement appears on the operator terminal, followed by the commands in the

system initialization file. These scroll rapidly as the computer executes them. When AMOS is finished

booting, the operator terminal displays MEMORY 0.

Depending on how your computer is set up, your terminals may automatically display a menu or

start your application after you turn the computer on.

If nothing appears on the status display or the terminal screen after a minute's wait, please turn to Chapter

4 to see what to do next.

When the computer is up and running, the front panel display will show a zero.

TURNING THE COMPUTER OFF

You need to turn off the computer whenever:

•

A technician needs to open the computer chassis for any reason.

•

You move the computer or servicing is required.

•

You add or remove external SCSI devices. NEVER attach or detach a SCSI device while the

computer is on! Doing so could damage the device and/or the computer’s CPU board.

To turn off the computer always follow these steps:

Have everyone stop using the computer and log off.

Remove any backup media (such as streaming tape) from the computer.

After everyone is logged off and the H.D.D. light (see Figure 2-1) is out, press the power button

at the top right of the front panel.