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Symptom
AC indicator lit orange
Midspan repeatedly
shutsdown for few
minutes and then starts
The end device
operates, but there is
no data link.
Midspan port indicator
is blinking at a 1 sec.
rate
Midspan port indicator
is blinking at a 0.5 sec.
rate
Power over Ethernet Solutions
Table 3-1: Troubleshooting Steps
Power-on self-test failed: the Midspan detected an internal fault. In this
case, contact your local dealer.
Verify that the ventilation holes are not blocked.
1.
Verify that the port indicator on the front panel is continuously lit.
2.
If an external power splitter is in use, replace it with a known-good
splitter.
3.
Verify that for this link, you are using standard UTP/FTP Category 5
straight (non-crossover) cabling, with all four pairs. Check that the
link is 100 m or less.
4.
Try to re-connect the same end device into a different port on the
same unit or into another Midspan – if it works, there is probably a
faulty input/output port, or RJ-45 connection.
This is a safe condition. The blinking green indication is due to:
1. A device, not compliant to IEEE 802.3af, was detected.
2. Terminals 4/5 and 7/8 are shorted together.
3. Forced external power fed into the port.
During these conditions, port power is disconnected.
This is a safe condition. The blinking green indication is due to a power
management event.
In such event the corresponding port to the indicator, requires power that
exceeds power budget capability of the Midspan. During these conditions,
port power is disconnected.
A port will operate when total power consumption of the Midspan
decreases.
try to connect the PD to another Midspan to verify that the PD is valid.
24
Corrective Steps
Cat. No.: 06-6860-056
PD-6548
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