Power supply LEDs
Figure 1. Power supply LEDs and connectors
1 Input (AC) power LED (green) | 3 Power supply error LED (yellow) |
2 Output (DC) power LED (green) | 4 Power cord connector |
The following table describes the problems that are indicated by various combinations of the power supply LEDs on an AC power supply and suggested actions to correct the detected problems.
AC power supply LEDs | Description | Action | Notes | ||
AC | DC | Error (!) | |||
On | On/ Blinking | Off | Normal operation. | When the DC LED is blinking at the 4Hz rate, the power supply is at zero-output mode, i.e. no DC power output from this power supply. | |
Off | Off | Off | No AC power to the solution or a problem with the AC power source. |
| This is a normal condition when no AC power is present. |
Off | Off | On | The power supply has failed. | Replace the power supply. | |
Off | On/ Blinking | Off | The power supply has failed. | Replace the power supply. | |
Off | On/ Blinking | On | The power supply has failed. | Replace the power supply. | |
On | Off | Off | Power-supply not fully seated, faulty system board, or the power supply has failed. |
| Typically indicates a power supply is not fully seated. |
On | Off | On | The power supply has failed. | Replace the power supply. | |
On | On/ Blinking | On | The power supply has failed. | Replace the power supply. |
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