This step isolates the problem to the expansion cable or to the controller module expansion port.
Is the expansion port status LED on?
Yes – You now know that the expansion cable is good. Return the cable to the original port. If the expansion port status LED remains
off, you have isolated the fault to the controller module expansion port. Replace the controller module.
No – Proceed to the next step.
6. Move the expansion cable back to the original port on the controller enclosure.
7. Move the expansion cable on the drive enclosure to a known good expansion port on the drive enclosure.
Is the expansion port status LED on?
•
Yes – You have isolated the problem to the expansion enclosure port. Replace the expansion module.
•
No – Proceed to the next step.
8. Replace the cable with a known good cable, ensuring the cable is attached to the original ports.
Is the host link status LED on?
•
Yes – Replace the original cable. The fault has been isolated.
•
No – It is likely that the controller module must be replaced.
2U enclosure LEDs
Use the LEDs on the 2U enclosure to help troubleshoot initial start-up problems.
PCM LEDs (580 W)
Under normal conditions, the PCM OK LEDs are a constant green.
Table 11. PCM LED states
PCM OK (Green)
Fan Fail (Amber)
AC Fail (Amber)
DC Fail(Amber)
Status
Off
Off
Off
Off
No AC power on any PCM
Off
Off
On
On
No AC power on this PCM only
On
Off
Off
Off
AC present; PCM working correctly
On
Off
Off
On
PCM fan speed is outside acceptable limits
Off
On
Off
Off
PCM fan has failed
Off
On
On
On
PCM fault (over temperature, over voltage,
over current)
Off
Blinking
Blinking
Blinking
PCM firmware download is in progress
Ops panel LEDs
The Ops panel displays the aggregated status of all the modules. See also
.
Table 12. Ops panel LED states
System
Power
(Green/
Amber)
Module Fault
(Amber)
Identity
(Blue)
LED display
Associated LEDs/
Alarms
Status
On
Off
Off
X
5 V standby power present, overall
power has failed or switched off
On
On
On
On
Ops panel power on (5 s) test state
On
Off
Off
X
Power on, all functions good
On
On
X
X
PCM fault LEDs, fan
fault LEDs
Any PCM fault, fan fault, over or under
temperature
On
On
X
X
SBB module LEDs
Any SBB module fault
On
On
X
X
No module LEDs
Enclosure logical fault
Troubleshooting and problem solving
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