Installation Guide
QX-S5500G Series Ethernet Switches
7. Maintenance and troubleshooting
7-1
7. Maintenance and troubleshooting
7.1 Power module failure
7.1.1 Fixed power module failure of QX-S5524GT-4X2Q or QX-S5548GT-4X2Q
The QX-S5524GT-4X2Q or QX-S5548GT-4X2Q switches use fixed power modules, and
support three power input modes: AC input, RPS DC input, and concurrent AC and RPS
DC inputs.
Look at the system status LED and the RPS status LED of the switch to identify power
system failure.
Table 7-1
Description for the power failure indication LEDs
LED
Mark
Status
Description
System status LED SYS OFF
The switch is powered off.
RPS status LED
RPS
Steady green
The AC input is normal, and the RPS is in position or operating
correctly.
Steady yellow
RPS power input is normal, but AC input has failed or AC input is not
connected.
OFF
No RPS is connected.
I.
AC input
Symptom
The system status LED is off.
Solution
To resolve the problem:
a) Verify that the AC power cord is securely connected to the switch, and the AC-input
power receptacle on the switch and the connected AC power outlet are in good
condition.
b) Verify that the external AC power system is operating correctly.