● If the Mini-SAS status LED is solid amber, it indicates that the port link is working, but at a degraded speed. It can
happen when a SAS4 enclosure port is connected to a SAS3 HBA.
See EMM indicators and ports for more details.
4. If the problem persists, see the Getting help section.
Troubleshooting enclosure cooling problems
Ensure that none of the following conditions exist:
● Ambient temperature is higher than the system specific ambient temperature.
● External airflow is obstructed.
● A power supply unit is removed or has failed.
If the problem persists, see the Getting help section.
Troubleshooting the PSU
If a PSU fails, check the following causes:
1. Locate the faulty PSU and determine the status of the LEDs. See PSU indicators for more details of the PSU LEDs.
a. If the AC power input LED is off:
● Check the power cable and the power source into which the power supply is plugged.
● Connect another device to the power source to verify that the power source is working.
● Connect the cable to a different power source.
● Replace the power cable.
b. If the DC power output LED is off:
● Verify that the PSU is inserted properly.
● Reseat the power supply by removing and reinstalling it. See Power supply unit to know how to replace a PSU.
NOTE:
○ The PSUs are hot-swappable. Leave the enclosure powered on when replacing a PSU.
○ When performing hot-plug operations, ensure that you follow all electrostatic and thermal guidelines.
○ After installing a PSU, allow several seconds for the enclosure to recognize the PSU and to determine if it is
working properly.
2. If the problem is not resolved, swap or replace the PSU with a known good PSU.
3. If the problem persists, see the Getting help section.
Troubleshooting the EMM
If an EMM fails, check the following causes:
1. Locate the faulty EMM and determine the status of the LEDs. See EMM indicators and ports for more details of the EMM
LEDs.
a. If the EMM Status LED is blinking amber:
i. Turn off the enclosure.
ii. Remove the EMM and verify that the pins on the EMM are not bent. See Remove the EMM.
NOTE:
Ensure that you follow all electrostatic and thermal guidelines. It ensures that system functions properly
and prevents bodily injury to the operating person.
iii. Reinstall the EMM and wait for 30 seconds. See Install the EMM.
iv. Turn on the enclosure.
v. Check the EMM Status LED.
b. If the EMM Status LED is still blinking amber:
● Download the latest firmware version from dell.com/support and update the firmware on both EMMs to the latest
supported firmware version.
2. If the problem is not resolved, swap or replace the EMM with a known good EMM.
3. If the problem persists, see the Getting help section.
Troubleshooting
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