Sun Microsystems Netra T4 AC100, Service And System Reference Manual

Page: 33 / 284

Chapter 1 System Description 1-7
The Alarm1, Alarm2, System and Fault LEDs are mirrored on the LOMlite2 card
visible from the rear of the system (see Section 1.4.2, “LOMlite 2 LEDs” on page 1-8).
TABLE 1-1
Front Panel System LED Functions
LED Icon/Legend Color Function
Power Green Illuminated continuously while power is
supplied to the system.
System
1
SYSTEM Green Off (or reset) during power up procedures
and illuminated when UNIX is running and
the Alarms driver is installed. This LED is
reset by a hardware Watchdog timeout, or
whenever the user-defined Alarm3 is
asserted.
Alarm1
1
ALARM1
Amber Illuminated whenever the user-defined
Alarm1 is asserted
Alarm2
1
ALARM2 Amber Illuminated whenever the user-defined
Alarm2 is asserted
Input A OK DC-A Green Illuminated when the input voltage from
feeder A is above 37 V
Off when Input A is below 35 V
Not used by the AC100
Input B OK DC-B Green Illuminated when the input voltage from
feeder B is above 37 V
Off when Input B is below 35 V
Not used by the AC100
Fault
1
Amber Driven by the LOMlite2 module under
identified system fault conditions
Disk0 Active
2
Green Illuminated when Disk0 is active
Disk0 OK to
Remove
2
Blue Illuminated, in response to a user request,
when Disk0 can be removed safely without
affecting the system operation
Disk0 Fault
2
Amber Illuminated when the system has identified a
fault in Disk0