Hitachi AMS 2000 Series Service Manual page 65

LOC LED
The LOC LED indicates various controller conditions depending on the speed
and number of blinks. See
When adding a unit with the power turned on, the LED indicates that a unit
has been added (this is not an error).
Number
of blinks
Voltage on the control unit is abnormal. (Reset of the control unit is not
6 (slow)
canceled)
1
1 (fast) SRAM error.
2 (fast) hard error.
3 (fast) Firmware error in flash memory.
Boot section error in the ENC firmware, a RAM error, or ENC hard
ON
configuration error.
1.When blinking fast, the LED is on for 400 ms and off for 200 ms for each fast
blink. After the number of fast blinks has completed, the LED ID goes off for one
second.
Hitachi AMS 2000 Family Storage System Service Guide
Table 1-14.
Table 1-14: LOC LED
Description
Introduction
1–25