2U Enclosure Leds - Dell EMC PowerVault ME4 Series Deployment Manual

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)
Off Off
Off Off
On Off
On Off
Off On
Off On
Off Blinking
Ops panel LEDs
The Ops panel displays the aggregated status of all the modules. See also
Table 12. Ops panel LED states
System Module Fault
Power (Amber)
(Green/
Amber)
On Off
On On
On Off
On On
On On
On On
AC Fail (Amber)
Off
On
Off
Off
Off
On
Blinking
Identity LED display
(Blue)
Off X
On On
Off X
X X
X X
X X
DC Fail(Amber) Status
Off No AC power on any PCM
On No AC power on this PCM only
Off AC present; PCM working correctly
On PCM fan speed is outside acceptable limits
Off PCM fan has failed
On PCM fault (over temperature, over voltage,
over current)
Blinking PCM firmware download is in progress
2U enclosure Ops panel.
Associated LEDs/ Status
Alarms
5 V standby power present, overall
power has failed or switched off
Ops panel power on (5 s) test state
Power on, all functions good
PCM fault LEDs, fan Any PCM fault, fan fault, over or under
fault LEDs temperature
SBB module LEDs Any SBB module fault
No module LEDs Enclosure logical fault
Troubleshooting and problem solving 63