HP ProCurve 408 Installation Manual page 33

Diagnostic Tips:
Tip
Number Problem
The switch's
power adapter
is not plugged
into an active
AC power
source, or the
power adapter
may have failed.
A switch
hardware
failure was
detected during
self test.
1. Verify that the AC power adapter is plugged
into an active power source and to the switch.
Make sure these connections are snug.
2. Try power cycling the switch by unplugging
and plugging in the power.
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
switch into a different outlet.
If this condition persists, the switch's power
adapter 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 booklet for more
information.
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.
Troubleshooting
Diagnosing With the LEDs
Solution
3-5