Installation Guide
QX-S5500G Series Ethernet Switches
7. Maintenance and troubleshooting
7-3
e) Verify that the operating temperature of the switch is in an acceptable range, and the
power module has good ventilation. Over-temperature can cause the power module to
stop working and enter protection state.
f) If the problem persists, contact NEC Support.
2) Symptom 2
The system status LED is on but the RPS status LED is steady yellow.
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.
c) If the problem persists, contact NEC Support.
3) Symptom 3
The system status LED is on but the RPS status LED is off.
Solution
To resolve the problem:
a) Verify that the switch is securely connected to the RPS.
b) Verify that the RPS is operating correctly.
c) If the problem persists, contact NEC Support.
7.1.2 Hot swappable power module failure of QX-S5524GT-4X1C,
QX-S5548GT-4X1C, or QX-S5524GP-4X1C
This section applies to the QX-S5524GT-4X1C, QX-S5548GT-4X1C, or
QX-S5524GP-4X1C.
For the QX-S5524GT-4X1C, QX-S5548GT-4X1C, or QX-S5524GP-4X1C, examine the
PWR1 or PWR2 LED of the switch to identify power module failure.
For more information about the PWR1 and PWR2 LEDs on the front panel of the switch,
