0 | 1 | 2 | PWR OK | 3 | State |
![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledGreenOff.png) | ![](ledRedOff.png) | DC not OK |
![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | DC ok; +12V > 10V, +5V > 4V; System ok? |
![](ledRedOn.png) | ![](ledRedOn.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | System hung;halt switch on or power-up mode wrong. |
![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | CPU, fault, or configuration error. |
![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | Memory error; R1 points to bad location. |
![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | Console SLU will not transmit. |
![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | Waiting for response from operator. |
![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | Load device fault. |
![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | Secondary boot incorrect (location 0 not a NOP). |
![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | DECnet waiting for response from host. |
![](ledRedOn.png) | ![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | DECnet; received done flag set. |
![](ledRedOn.png) | ![](ledRedOff.png) | ![](ledRedOff.png) | ![](ledGreenOn.png) | ![](ledRedOn.png) | DECnet; message received. |
![](ledRedOn.png) | ![](ledRedOff.png) | ![](ledRedOn.png) | ![](ledGreenOn.png) | ![](ledRedOff.png) | ROM bootstrap error. |