Diagnosing With The Leds - HP ProCurve 10/100 12 Installation Manual

Diagnosing with the LEDs

LED patterns indicating problems
Power Fault Port
OFF * *
ON OFF OFF when
cable first
connected
ON Flashing Flashing for
partitioned
port
ON ON for a Variable, all
pro- may be ON
longed
period
* This LED is not important for the diagnosis.
Diagnostic Tips
Check the power cord and power source. If they are OK, the hub may have to
be replaced. Contact your HP-authorized LAN dealer or HP representative for
assistance.
• An attached device has not been detected on the port. Check that the
cabling on the indicated port is connected properly. Faulty or improperly
wired cables are common; try a different cable.
• For the 100 Mbps autosensed ports, verify that you are using category 5, or
better, UTP cable.
The port has been autopartitioned due to excessive collisions. This usually
occurs because of bad cabling or a network loop.
A hub hardware failure was detected during self test. Self test does not
complete so the LEDs will stay on longer than 3 seconds.
Power cycle the hub. If this condition persists, the hub may have to be
replaced. Contact your HP-authorized LAN dealer or HP representative for
assistance.
Troubleshooting
Diagnosing with the LEDs
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