Dell PowerEdge T440 EMC Installation and Service Manual - Page 21

Locating the Service Tag of your system

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Figure 11. AC PSU status indicator 1. AC PSU status indicator/handle Table 10. AC PSU status indicator codes 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 powers off. It indicates a PSU mismatch regarding 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 PowerEdge servers is not supported, even if the PSUs have the same power rating. It results in a PSU mismatch condition or failure to power on the system. 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 conversely, you must turn off the system. CAUTION: AC PSUs support both 240 V and 120 V input voltages except for Titanium PSUs, which support only 240 V. When two identical PSUs receive different input voltages, they can output different wattages, and trigger a mismatch. CAUTION: If two PSUs are used, they must be of the same type and have the same maximum output power. Locating the Service Tag of your system You can identify your system using the unique Express Service Code and Service Tag. Pull out the information tag in front of the system to view the Express Service Code and Service Tag. Alternatively, the information may be on a sticker on the chassis of the system. The mini Enterprise Service Tag (EST) is found on the back of the system. This information is used by Dell to route support calls to the appropriate personnel. Dell EMC PowerEdge T440 system overview 21

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Figure 11. AC PSU status indicator
1.
AC PSU status indicator/handle
Table 10. AC PSU status indicator codes
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 powers off. It
indicates a PSU mismatch regarding 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 PowerEdge servers is not supported, even if the PSUs have the same power rating. It
results in a PSU mismatch condition or failure to power on the system.
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 conversely, you must turn off the system.
CAUTION:
AC PSUs support both 240 V and 120 V input voltages except for Titanium PSUs,
which support only 240 V. When two identical PSUs receive different input voltages, they
can output different wattages, and trigger a mismatch.
CAUTION:
If two PSUs are used, they must be of the same type and have the same
maximum output power.
Locating the Service Tag of your system
You can identify your system using the unique Express Service Code and Service Tag. Pull out the information tag in front of the system
to view the Express Service Code and Service Tag. Alternatively, the information may be on a sticker on the chassis of the system. The
mini Enterprise Service Tag (EST) is found on the back of the system. This information is used by Dell to route support calls to the
appropriate personnel.
Dell EMC PowerEdge T440 system overview
21