11
Table 8
System status LED description
LED mark
Status
Description
SYS
Steady green
The switch is operating correctly.
Flashing green (1 Hz)
The switch is performing power-on self test (POST).
Steady red
POST has failed.
Flashing yellow (1 Hz)
Some ports have failed to pass POST.
Off
The switch is powered off.
Power module status LEDs
The S5820X-28S and S5820X-28C switches have one status LED for each power module slot to show the
availability and operating status of the hot swappable power modules in the slots.
Table 9
Power module status LED description
LED mark
Status
Description
PWR1
Steady green
A power module is installed in power module slot 1, and the power
output is normal.
Steady yellow
A power module is installed in power module slot 1, but the power
module has an output problem.
Off
No power module is installed in power module slot 1, or no power
is being input.
PWR2
Steady green
A power module is installed in power module slot 2, and the power
output is normal.
Steady yellow
A power module is installed in power module slot 2, but the power
module has an output problem.
Off
No power module is installed in power module slot 2, or no power
is input.
Seven-segment LED
The seven-segment LED, together with the system status LED, shows detailed system operating
information.
Table 10
Seven-segment LED description
System status
LED (SYS) status Seven-segment LED (Unit) status
Description
Flashing green
The LED displays numbers one by one.
POST is running, and the LED displays the
ongoing test item ID.
Flashing red
The LED displays flashing numbers.
POST has failed, and the LED flashes the ID
of the failed test item.