Diagnostic Tips - HP ProCurve 4202vl-48G Installation And Getting Started Manual

LED Pattern Indicating Problems
On Off
On Off
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.

Diagnostic Tips:

Tip
Letter Problem
A
The power supplies
installed in the
switch are not
plugged into active
AC power sources,
or the power supply
may have failed.
B
A switch hardware
failure has
occurred. All the
LEDs will stay on
indefinitely.
C
One or more of the
switch cooling fans
may have failed.
1 1
Off
1 1
Off
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.
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.
Try disconnecting power from the switch and wait a few moments. Then reconnect
the power to the switch and check the LEDs again. If the error indication reoccurs,
one or more of the fans have failed. The switch has multiple fans and may continue
to operate OK under this condition if the ambient temperature does not exceed
normal room temperature, but for best operation, the switch should be replaced.
Contact 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.
Diagnosing with the LEDs
Diag
Tips
L
1
Fast
3
Flashing
M
1
Off with
cable
connected
Solution
Troubleshooting
Brief Problem
Description
Port security
disabled the port
No link on port
4-5