LaCie 12big Rack Network
Troubleshooting & Problem Solving
User Manual
page 30
4.3. Audible Alarm
The PSUs include Audible Alarms which indicates when a fault state
is present. A Voltage Out Of Range condition will activate the au-
dible alarm:
The audible alarm can be muted by pressing the Enclosure ID button
on the Ops Panel.
4.4. Alarm Interpretation
Table 12
summarizes the various states of the LEDs and Audible
Alarm to help you understand what an enclosure is trying to tell you
by the pattern of lights and beeps. It takes each light/beep in turn
and shows linked items, so data is duplicated in some places to
make ease of search better.
NOTE:
There will be no beep if the enclosure is muted
Table 12 - Light and Buzzer Interpretation
LED/Buzzer
State
Related
Meaning
Action
Ops Panel Fault Light
Off
--
No warnings or worse
None - All OK
Slow blink
(0.5 seconds on, 3.5
seconds off)
Slow beep (half second
beep every 8 seconds).
No Fan/drive lights lit
constant.
No beep if muted.
Warning state – usually
approaching tempera-
ture threshold
Check ambient tempera-
ture and increase if too
cold or decrease if too
hot. If this does not work
check for fan failure that
has a broken light too.
Slow beep. Fan light con-
stant. No beep if muted.
Fan broken or out of
tolerance
Replace lit fan.
Slow beep. Drive light
constant. No beep if
muted.
Drive fault
Replace drive
Fast Blink (alternating
every half second)
Faster beep (1.5 sec-
onds beep, 0.5 second
silence). No fan lights
constant. No beep if
muted.
Critical state – usually
temperature near edge
of operating realm
Check ambient tempera-
ture and increase if too
cold or decrease if too
hot immediately. If this
does not work check for
fan failure that has a
broken light too.
Faster beep, More than
one fan light on or a
single PSU fan light on.
No beep if muted.
Fans broken or out of
tolerance
Replace Fans immedi-
ately
