Audible error indicators, Visual error indicators, I/o module and transceivers – HP StorageWorks 2500 Disk System User Manual
Page 50: Leds in the operational state, Audible alarm sound patterns

LEDs on the rear of the enclosure indicate the status of the EMU, I/O modules, and power supply/blower
assemblies. Operational states of the LEDs are shown in
CXO7959A
Figure 26 LEDs in the operational state
Audible error indicators
If enabled, the audible alarm sounds when the EMU detects an error. The sound pattern identifies the
error severity.
shows the duration of the different alarms. See "
for instructions to control the alarm.
Table 9 Audible alarm sound patterns
Error severity
Cycle 1
Cycle 2
Unrecoverable
Critical
Noncritical
Information
Legend
Alarm on
Alarm off
Visual error indicators
I/O module and transceivers
LEDs on the I/O module report the status of transceiver signals and I/O module power. Use
and
to interpret the I/O module errors and determine what action to take.
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Troubleshooting