22
ProCurve Switch vl Modules
Troubleshooting
See the following tables to diagnose the LED error indicators in the previous 
table.
Diagnostic Tips:
On Off Off
11 1
Fast 
Flashing
3
L
Port security 
disabled the port
On Off Off
11 1
Off with 
cable 
connected
M
No link on port
1
This LED is not important for the diagnosis.
2
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.
3
The fast flashing behavior is an on/off cycle once every 0.8 seconds, approximately.
LED Pattern Indicating Problems
Diag 
Tips
Brief Problem 
Description
Power
Fault
Self Test
Fan Status
Power Status
(one LED per
power supply)
Module Status
(one LED per
module)
Port Link
Tip 
Letter
Problem Solution
A 
The power supplies 
installed in the 
switch are not 
plugged into active 
AC power sources, 
or the power supply 
may have failed.
1. Verify the power cord is plugged into an active power source and to the switch. 
Ensure these connections are snug.
2. Try power cycling the switch by unplugging and plugging the power cord back in.
3. If the Power LED is still not on, verify the AC power source works by plugging 
another device into the outlet. Or try plugging the switch into a different outlet or 
try a different power cord.
If the power source and power cord are OK and this condition persists, the switch 
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.
B
A switch hardware 
failure has 
occurred. All the 
LEDs will stay on 
indefinitely.
Try power cycling the switch. If the fault indication reoccurs, the switch 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.