Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Environmental Monitoring Unit
UltraSCSI RAID Enclosure 3–19
Nonoperational Enclosure
Probable Cause 1—
Either +5 V dc or 12 V dc out of range. Observe the individual 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 displaying a TERMPOWER LED O
FF
indication.
Single Blower Fault
Operational blowers are running at
high-speed.
Missing Blower Fault
or
Multiple Blower Faults
Operational blowers are running at
high-speed.
Probable Cause 1—
A blower is removed. Replace the missing blower.
Probable Cause 2—
All blowers in one bank are not operating. Remove and install blowers correctly
within 8 minutes.
Probable Cause 3—
Multiple blowers are installed incorrectly. Remove and install blowers correctly
within 8 minutes.
Comment—
In this example, one of the following conditions exist in shelf bank 1:
• A blower is removed.
• Two or more blowers are not operating.
Failure to replace the missing or defective blowers within 8 minutes might result in the enclosure
entering standby power mode.
Table 3–7 EMU Status Displays (Continued)
1234
5678
CXO5780A
1234
5678
CXO5781A
1234
5678
CXO5782A