Mitel 3300 ICP Hardware User's Manual page 252

3300 ICP Hardware User Guide
Symptom
3300 In-Line Power Unit is
plugged to main AC inlet,
but does not power up.
3300 In-Line Power Unit is
plugged in and running, but
the fans are not working.
3300 In-Line Power Unit
operates, but the "AC" LED
is off.
3300 In-Line Power Unit
has powered up and the
"Alarm" LED remains lit.
The "Power Active" LED is
lit but one of the end
devices does not operate.
The "Power Active" and
"Power Not Active" LEDs
on one port are not lit and
the corresponding end
device does not operate.
244
Resolution
Verify the use of a correct and functional AC power cord, including good and solid
ground connection.
Verify that the AC inlet is supplying power (test with a different device) and that the
voltage is between 100Vac to 264VAC (50Hz to 60Hz).
Re-connect the 3300 In-Line Power Unit to the AC inlet and verify LEDs power up
sequence.
Verify that all fan openings in the case are clear of any air blocking materials.
If fans are not working, there may be an internal power supply fault.
If both internal fans are working (i.e. air flows out of the case or can be heard), there
is a possible internal circuitry fault.
If fans are not working, there may be an internal power supply fault.
Establish whether the Power On Self Test (POST) sequence is as listed or not.
If the LEDs light up in the correct sequence, the 3300 In-Line Power Unit is fully
operational.
If the Alarm LED remains lit following the POST sequence, the 3300 In-Line Power
Unit POST detected an internal fault. Contact your local dealer.
Verify that the "Power Active" LED that is lit corresponds to the end device that is
not working.
The 3300 In-Line Power Unit has successfully identified the end device as Power
over LAN Enabled and is providing power. Try to connect a different end device to
the same port – if the end operates, there is probably an internal fault in the
previous end device.
The 3300 In-Line Power Unit did not detect a connected end device and therefore
the port is not providing power.
Verify that you are using a standard UTP Category 5, 6 or 6e cable, including all 8
wires (4 pairs).
Verify that you are not using a crossover twisted pair wire.
Verify that the end device is connected to the "Data & Power Out" port (upper RJ-45
connector).
Try to re-connect the same end device into a different port on the same unit – if it
works, there is probably a faulty port or RJ-45 connection.
Try to bypass the long twisted pair cable and bring the end device close to the 3300
In-Line Power Unit and connect to one of the ports using a short cable – if it works,
there is probably a faulty connection or short on the long cable, or one bad RJ-45
connection along the line.
If possible, try to connect the end device into a different 3300 In-Line Power Unit –
if it works, the 3300 In-Line Power Unit is probably faulty. Try to power it up again
and verify a correct power up LEDs sequence.
Release 3.3