LEDs on the AC Power Supplies Used in QFX5120 Switches
Figure 1 shows the LED on the AC power supply for QFX5120-32C switches.

1 — LED |
Table 1 describes the LED on the AC power supply for QFX5120-32C switches.
Table 1: LED on the AC Power Supply for QFX5120-32C Switches
Color | State | Description |
---|---|---|
Green | On steadily | The power supply is sending out power correctly. |
Blinking | The power supply is in standby mode. | |
Red | On steadily | An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it. |
Blinking | The internal fan in the power supply has failed. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it. | |
Unlit | Unlit | The power supply is disconnected from power, or the power supply is not receiving power. |
Figure 2 shows the LEDs on the AC power supply for QFX5120-48T and QFX5120-48Y switches. Figure 3 shows the LEDs on the AC power supply for QFX5120-48YM switches.

1 — AC LED (labeled AC ) | 3 — Fault LED (labeled ! ) |
2 — DC LED (labeled DC ) |

1 — AC LED (labeled AC ) | 3 — Fault LED (labeled ! ) |
2 — DC LED (labeled DC ) |
Table 2 describes the LEDs on the AC power supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.
Table 2: LEDs on the AC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches
LED Label | Color | State | Description |
---|---|---|---|
| Green | On steadily | The power supply is receiving power. |
Unlit | Unlit |
| |
| Green | On steadily | The power supply is sending out power correctly. |
Unlit | Unlit |
| |
| Amber | On steadily | An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it. |