Digital Equipment StorageWorks UltraSCSI DS-BA370 Series, User Manual

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Environmental Monitoring Unit (EMU)
3–6 UltraSCSI RAID Enclosure
•
This LED is F
LASHING
whenever the EMU has one or more fault codes
to display.
•
When the alarm control LED is F
LASHING
, momentarily pressing the
EMU alarm control switch turns O
FF
the audible alarm and starts the
fault code LED display.
•
Pressing the alarm control switch for at least 5 seconds clears all the
active fault codes. Detection and the display of new faults continue.
•
When in the standby power mode, momentarily pressing this switch
will restore power to the enclosure.
Temperature Fault LED
Whenever either the intake or the exhaust air temperature exceeds the
user-defined temperature setpoints, this amber LED (C
ALLOUT
3) is O
N
until
the overtemperature condition is corrected.
Power Supply Status LED
This green LED (C
ALLOUT
4) is O
N
whenever ALL the following conditions
exist:
•
+5 V dc is greater than +4.7 V dc.
•
+12 V dc is greater than +11.4 V dc.
•
At least four power supplies are operational.
•
TERMPOWER is present on all six I/O modules.
This LED is O
FF
whenever any ONE of the following conditions exists:
•
+5 V dc is less than +4.7 V dc.
•
+12 V dc is less than +11.4 V dc.
•
Fewer than four power supplies are operational.
•
One or more I/O modules are missing TERMPOWER
RS232 Connector
You can connect a maintenance terminal console or PC to connector
(C
ALLOUT
5) to display EMU:
•
Error messages.
•
Information messages.
A PC can also load the microcode updates into the EMU memory through
this connector.