3-3
Troubleshooting
Diagnosing with the LEDs
Trouble
shooting
Diagnosing with the LEDs
LED patterns indicating problems
Diagnostic Tips
Power
Fault
Port
OFF
*
*
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.
ON
OFF
OFF when
cable first
connected
• 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.
ON
Flashing
Flashing for
partitioned
port
The port has been autopartitioned due to excessive collisions. This usually
occurs because of bad cabling or a network loop.
ON
ON for a
pro-
longed
period
Variable, all
may be ON
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.
*
This LED is not important for the diagnosis.
Roadhw0.bk : ROADHW3.FM Page 3 Thursday, May 28, 1998 5:40 PM
