3-1
T
rou
ble
shoot
ing
3
Troubleshooting
This chapter describes how to troubleshoot the Power Supply Shelf.
This chapter describes the following:
■
basic troubleshooting tips (
)
■
diagnosing with the LEDs (
)
■
diagnostic tests (
)
■
HP customer support services (
)
Basic Troubleshooting Tips
Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:
■
Faulty or loose cables.
Look for loose or obviously faulty connections.
If the cables appear to be OK, make sure the connections are secure. If
that does not correct the problem, try a different cable.
■
Connection topologies.
It is important to make sure you have a valid
connection topology. The Power Supply Shelf can support two ProCurve
PoE devices. Sample topologies are shown at the end of chapter two
■
Power limitations
. Be sure to understand the power limitations of the
Power Supply Shelf when connecting switches. An overload condition on
a port causes the port to be shut down.
N o t e
Use caution when power cycling the Power Supply Shelf as this may affect
devices receiving PoE power from the unit.