| Number | Item | Description |
|---|---|---|
| 1 | RDY2 | Green: Normal operation Off: Erroneous operation or out of operation |
| 2 | RDY1 | Green: Normal operation Off: Erroneous operation or out of operation |
| 3 | AC IN | Green: Indicates that AC input is normal. |
| 4 | ALM (REPLACE) | Red: Indicates when the power supply can be replaced. |