Troubleshooting guide

Table Of Contents
367
Status LEDs
Power Unit Alarm
Table 105 below shows the meaning of the Alarm LED.
Power Unit Port Status
Each port pair has two Status LEDs:
Power Active LED (Green LED)
Power Inactive LED (Orange LED)
Table 105: Power Unit Alarm LED (Orange)
LED Status Meaning
ON Built-in self test failed.
Flashing Software load failure. Re-install the software.
OFF Built-in self test passed.
Table 106: Power Unit Port Status LEDs
LED Status
Meaning Port Voltage
Green Orange
ON OFF Active load plugged in, and
complying to normal load
conditions.
Continuous nominal DC
voltage present on spare
pairs.
OFF ON Overload condition. OR
Shorted terminal port. OR
Forced external DC voltage
feed into port.
Power to the port
disconnected. No DC
voltage on spare pairs.
ON ON Internal hardware fault. No DC voltage on spare
pairs.
Blinking OFF Load detection in progress.
OR
Discharged capacitor in
PDTE.
Power disconnected. No
DC voltage on spare
pairs.
OFF Blinking Total aggregate power
exceeds predefined power
budget.
Power disconnected for
the blinking port.
OFF OFF Non-active load. OR
Unplugged load.
No DC voltage present on
spare pairs.