Owners Manual

2. activity LED indicator
Status Condition
Link and activity indicators are off The NIC is not connected to the network.
Link indicator is green and activity indicator is blinking
green
The NIC is connected to a valid network at its maximum port speed
and data is being sent or received.
Link indicator is amber and activity indicator is blinking
green
The NIC is connected to a valid network at less than its maximum
port speed and data is being sent or received.
Link indicator is green and activity indicator is off The NIC is connected to a valid network at its maximum port speed
and data is not being sent or received.
Link indicator is amber and activity indicator is off The NIC is connected to a valid network at less than its maximum
port speed and data is not being sent or received.
Link indicator is blinking green and activity is off NIC identify is enabled through the NIC configuration utility.
Power supply unit indicator codes
An illuminated translucent handle on the AC power supply units (PSUs) serves as a status indicator. The indicator shows
whether power is present or if a power fault has occurred.
Figure 14. AC PSU status indicator
1. AC PSU status indicator/handle
Power indicator codes
Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When the firmware of the PSU is being updated, the PSU handle blinks green.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating
firmware. If firmware update is interrupted, the PSUs do not function.
Blinking green and turns
off
When hot-plugging a PSU, the PSU handle blinks green five times at a rate of 4 Hz and turns off.
This indicates a PSU mismatch with respect to efficiency, feature set, health status, or supported
voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label;
for example, Extended Power Performance (EPP) label. Mixing PSUs from previous
generations of NAS systems is not supported, even if the PSUs have the same power
rating. This results in a PSU mismatch condition or failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking
indicator. Swapping the PSU to make a matched pair can result in an error condition
and unexpected system shutdown. To change from a high output configuration to a
low output configuration or vice versa, you must turn off the system.
26 Diagnostics and indicators