Bull ESCALA E250, Использование и обслуживание, Страница: 28 / 162

1-12
Setup Guide
Power Off Position:
This is the standby position. The system is not working but it is possible to call the standby
menu for offline maintenance purposes.
Service Position:
The Service position can be used either to do an automatic or an interactive power on,
depending on the value of the Open Firmware auto-boot? variable ( true by default, it performs
an automatic boot). When the system is powered on with the key in this position, the operating
system diagnostic mode is entered. Moreover, this position is used for some offline
maintenance activities (e.g. offline test running).
Normal Position:
The Normal position is for normal system operations. It can be used either to do an
automatic or an interactive power on, depending on the value of the Open Firmware
auto-boot?
variable ( true by default, it performs an automatic boot).
Secure Position:
The Secure position prevents the system from booting. If the system is already booted, this
position does not lock the system console or block system network communication.
When the operating system is up, turning the key to the Secure position disables the reset
button. With the key mode switch in this position, a passerby cannot accidentally press the
reset button and cause a loss of data.
Hexadecimal Display
The hexadecimal display visualizes the status of the system (standby, testing, error).
If you want to have a description of the hexadecimal display codes, refer to
System Status
Indicators,
in the Maintenance Guide . This guide is available at your supplier.
In case you are not maintaining the system on your own and encounter an error (a flashing
code on the display), follow the instructions described in
Problem Solving , on page 4-16.
What the hexadecimal display shows and the way it shows it (blinking, steady), depends on
the system status:
• Tracing :
– During the power on phases the hexadecimal display shows, without blinking, the test
code of the test under execution.
• Fault Detection :
– In case of fault detected by the system, the code displayed on the hexadecimal
display either flashes or remains steady on the display for more than two minutes.
•
Power On phase completed correctly
:
–
The hexadecimal display is cleared.