zl Power Supply Shelf Installation and Getting Started Guide 2009-06

3-3
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
Diagnostic Tips:
Tip Problem Solution
➊
The unit is not
plugged into an
active AC power
source, or the
unit’s power
supply may have
failed.
1. Verify the power cord is plugged into an active power source and to the unit. Make
sure these connections are snug.
2. Try power cycling the unit 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 unit into a different outlet or try a
different power cord.
If the power source and power cord are OK and this condition persists, the unit’s 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 booklet for more
information.
➋
A hardware
failure has
occurred. All the
LEDs will stay on
indefinitely.
Try power cycling the unit. If the fault indication reoccurs, the unit 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.
➌
The unit has
experienced a
failure.
Try resetting the unit by power cycling the unit.
If necessary to resolve the problem, contact 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.
➍
The port for
which the LED is
flashing has
experienced a
failure.
An over-current condition may have been caused by a connected device. Unplug the
cable connected to the port, then plug it back in. If the condition returns, carefully power
cycle the unit (be careful that other devices connected to the unit will not be adversely
affected). If the fault indication reoccurs, the unit port 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.
➎
The connection
is not working
properly.
Try the following procedures:
• For the indicated port, verify that both ends of the cabling, at the unit and the connected
device, are connected properly.
• Verify the connected device and unit are both powered on and operating correctly.
• If the other procedures don’t resolve the problem, try using a different port or a different
cable.
➏
EPS power is not
available.
Check the log file of the connected switch for more detailed information. Try
disconnecting, then reconnecting the EPS cable. Wait three to four seconds for the device
to successfully communicate for EPS power. Also try another EPS cable. If this fails to
restore EPS power, 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.