Figure 12. AC PSU status indicator
1. AC PSU status indicator/handle
Table 14. 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 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:
AC PSUs support both 240 V and 120 V input voltages with the exception of
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.
LCD panel
The LCD panel provides system information, status, and error messages to indicate if the system is functioning correctly or
requires attention. The LCD panel can also be used to configure or view the system’s iDRAC IP address. For information about
the event and error messages generated by the system firmware and agents that monitor system components, go to
>
Look Up
>
Error Code
, type the error code, and then click
Look it up
..
The LCD panel is available only on the optional front bezel. The optional front bezel is hot pluggable.
The statuses and conditions of the LCD panel are outlined here:
●
The LCD backlight is white during normal operating conditions.
●
When the system needs attention, the LCD backlight turns amber, and displays an error code followed by descriptive text.
NOTE:
If the system is connected to a power source and an error is detected, the LCD turns amber regardless of
whether the system is turned on or off.
18
Dell EMC PowerEdge R440 system overview
