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Power supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator. The indicator shows whether
power is present or if a power fault has occurred.
NOTE:
The 2400 W and 2000 W PSUs use a C20 connector.
Figure 5. AC PSU status indicator
1. AC PSU status indicator/handle
Table 4. AC PSU status indicator codes
Power indicator codes
Green
Blinking amber
Not illuminated
Blinking green
Blinking green and turns
off
Locating Service Tag of your system
Your system is identified by a unique Express Service Code and Service Tag number. The Express Service Code is and Service
Tag are found on the back of the system by pulling out the information tag. Alternatively, the information may be on a sticker on
the chassis of the system. This information is used by Dell EMC to route support calls to the appropriate personnel.
10
Dell EMC PowerEdge C4140 system overview
Condition
A valid power source is connected to the PSU and the PSU is operational.
Indicates a problem with the PSU.
Power is not connected to the PSU.
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.
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 PowerEdge servers 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.
CAUTION:
The 120 V AC PSU is not recommended for this system and using the same
can cause system throttling.
CAUTION:
If two PSUs are used, they must be of the same type, operate from the
same line voltage, and have the same maximum output power.
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