Hitachi AMS 2000 Series Service Manual page 165

Table 6-2:
Unit Symptom
Controller C-Power LED ON
RST LED blinking
Link LED OFF
ACT LED OFF
6 (slow)
1 (fast)
2 (fast)
3 (fast)
4 (fast)
LCT LED ON
Expansion Power LED OFF
Unit
Locate LED ON
a.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 is off for one second.
LED Failure Indications
Possible Cause
The cache memory is backed
up.
Not a failure. Blinks while the
base unit is resetting.
Link status is abnormal
No data is being transferred.
Voltage on the control unit is
abnormal. (Reset of the
control unit is not canceled.)
a
SRAM error.
hard error.
Firmware error in flash
memory.
CUDG error in .
Boot section error in the ENC
firmware, a RAM error, or ENC
hard configuration error.
1. Array power switch OFF
2. Power supplies not plugged
in
3. PDB switch or breaker OFF
4. No electric supply to rack
Indicates that a non-fatal
failure in the expansion unit,
but which does not stop the
unit from operating.
Indicates that the expansion
unit has been added to the
array with the power turned on
(this is not an error).
Troubleshooting
Hitachi AMS 2000 Family Storage System Service Guide
(Continued)
Action
Wait until reset completes before
using the base unit.
Check LAN cable connections and
communications settings. See
Navigator 2 cannot communicate
with the array in Table
Replace the controller.
1. Ensure that the ENC cables are
connected from the base unit to
the expansion unit and that
Ensure that the array power
switch is ON
2. Check that the power cable
connections to the expansion
unit and the PDB are secure.
3. Ensure that the PDB switches in
the rack are ON.
4. Verify electricity supply to the
rack. Work with facility
administrator to restore power.
If these steps do not fix the
problem, contact Technical Support.
See Getting help in the Preface of
this manual.
6-1.
6–7