Diagnosing With The Leds - HP ProCurve 10 Installation Manual

Troubleshooting

Diagnosing with the LEDs

Diagnosing with the LEDs
The following table shows LED patterns on the hubs that indicate problem
conditions.
Diagnostic Tips:
Tip Problem
The hub is not
plugged into an
active AC power
source, or the
hub's power
supply may have
failed.
3-4
LED patterns indicating problems
Power Fault
(per port)
OFF OFF
ON OFF OFF with a
network
cable
connected
ON OFF Slow Blink
ON ON for a Variable, all
prolonged may be ON
period
ON Off Fast Blink
ON OFF
†
The slow blink behavior is an on/off cycle once every 1.6 seconds
‡
The fast blink behavior is an on/off cycle once every 0.8 seconds
1. Verify that the power cord is plugged into an active power source and to the hub. Make
sure these connections are snug.
2. Try power cycling the hub by unplugging and plugging the power cord back in.
3. If the Power LED is still not on, verify that the AC power source works by plugging
another device into the outlet. Or try plugging the hub into a different outlet or try a
different power cord.
If the power source and power cord are OK and this condition persists, the hub power
supply may have failed. Call your HP-authorized LAN dealer, or use the electronic support
services from HP to get assistance. See the Customer Support/Warranty card for more
information.
Link Activity
OFF –
–
†
–
–
‡
–
ON ON
continuously
Solution
Diagnostic
Tips
Collision
–
–
–
–
–
ON
continuously