| K3 DSPLAYED FAULT NO. | KPA500 LCD DISPLAY | FAULT TYPE | FAULT |
|---|---|---|---|
| 0 | N/A | N/A | Communication failure between KPA500 and K3. |
| 2 | HI CURR | Attenuator→Hard | Excessive power amplifier current. |
| 4 | HI TEMP | Hard | Power amplifier temperature over limit. |
| 6 | PWRIN HI | Attenuator→Hard | Excessive driving power. |
| 8 | 60V HIGH | Hard | 60 volt supply over limit. |
| 9 | REFL HI | Attenuator→Hard | Excessive reflected power (high SWR). |
| 11 | PA DISS | Hard | Power amplifier FETs are dissipating excessive power. |
| 12 | POUT HI | Attenuator→Hard | Excessive power output. |
| 13 | 60V FAIL | Hard | 60 volt supply failure. |
| 14 | 270V ERR | Hard | 270 volt supply failure. |