Mitel 3300 Technician's Handbook page 377

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