Technical Documentation
T640 Two-Input 160-A DC Power Supply LEDs
Four LEDs on each two-input 160-A DC power supply faceplate indicate the status of the power supply. In addition, a power supply failure triggers the red alarm LED on the craft interface. Table 1 describes the functions of the power supply LEDs.
Table 1: Two-Input 160-A DC Power Supply LEDs
LED | Color | State | Description |
|---|---|---|---|
CB OK | Green | On steadily | Circuit breaker is on. |
Off | Circuit breaker is off. | ||
CB TRIP | Yellow | On steadily | Circuit breaker is not turned on, or host subsystem has detected a failure and has turned the circuit breaker off. |
Off | No problems have occured with circuit breaker, or the power supply is off. | ||
OVER TEMP | Yellow | On steadily | Power supply has exceeded recommended temperature. |
Off | Power supply is within the recommended temperature or is not turned on. | ||
DC OK | Blue | On steadily | Power supply is installed correctly and is functioning normally. |
Blinking | Power supply is starting up, is not properly installed, or is not functioning correctly. One of the inputs might have failed, or the power supply might not be receiving sufficient power. | ||
Off | Power supply is not powered on. |
