User guide

EF5XX ISE Controls and Indicators, Continued
Drive Module
LEDs
The two LEDs mounted on the drive module monitor ISE status
during operation. The following table describes the state of
these two LEDs during the various phases of ISE operation.
When . . .
The green
LED is . . .
And the yellow LED
is . . .
The ISE is first powered up On On
POST has run successfully Off Off
The ISE is ready to accept a
command
On Off
Drive activity Flickering Off
A read/write or serious physical
error is detected
Off On
The ISE is saving or restoring
data to the data retention
system
Blinking once
per second
Off
3–11