Dell POWEREDGE 1900 Hardware Owner's Manual page 12

Table 1-2. Front-Panel Components (continued)
Item Component
2 Power-on indicator, power
button
3 NMI button
4 System identification button
5 LCD panel
12
About Your System
Icon Description
The power-on indicator lights when the system power
is on.
The power button controls the DC power supply output
to the system.
NOTE:
and the system is running an ACPI-compliant operating
system, the system performs a graceful shutdown before
the power is turned off. If the system is not running an
ACPI-compliant operating system, the power is turned off
immediately after the power button is pressed.
Used to troubleshoot software and device driver errors
when using certain operating systems. This button can
be pressed using the end of a paper clip.
Use this button only if directed to do so by qualified
support personnel or by the operating system's
documentation.
The identification buttons on the front and back panels
can be used to locate a particular system within a rack.
When one of these buttons is pushed, the LCD panel
on the front and the blue system status indicator on the
back blink until one of the buttons is pushed again.
Provides system ID, status information, and system error
messages.
The LCD lights blue during normal system operation.
Both the system management software and the
identification buttons located on the front and back of
the system can cause the LCD to flash blue to identify a
particular system.
The LCD lights amber when the system needs
attention, and the LCD panel displays an error code
followed by descriptive text.
NOTE:
error has been detected, the LCD lights amber regardless
of whether the system has been powered on.
If you turn off the system using the power button
If the system is connected to AC power and an