Digital Equipment StorageWorks UltraSCSI DS-BA370 Series, User Manual

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Environmental Monitoring Unit (EMU)
3–18 UltraSCSI RAID Enclosure
______________________Note _____________________
It is not practical to display all the possible LED display
combinations. For example, there are eight displays for the
failure of an individual blower. Therefore, Table 3–6 lists only a
representative sampling of the possible displays.
________________________________________________
Table 3–6 EMU Status Displays
EMU Status EMU LED Display
Operational Enclosure
The subsystem is fully operational.
The power supplies and the blowers
are functioning properly. The intake
and exhaust air temperatures are
within the user specified limits.
1 2 3 4
5 6 7 8
CXO5778A
Non-Operational Enclosure
1 2 3 4
5 6 7 8
CXO5780A
Probable Cause 1—5 V dc or 12 V dc out of range. Observe the power supply status
LEDs to determine the defective power supply and replace it.
Probable Cause 2—TERMPOWER less than +4.5 V dc on one or more I/O modules. Replace the
I/O modules with a TERMPOWER LED O
FF