ProCurve 5406zl, Руководство по установке и началу работы, Страница: 32 / 52

3-4
Troubleshooting
Diagnostic Tests
Tro
ubl
eshoo
tin
g
Diagnostic Tests
Testing the Unit by Resetting It
If you believe the Power Supply Shelf is not operating correctly, you can reset
the unit to test its circuitry and operating code. To reset a unit, unplug and
plug in the power cord (power-cycling).
C a u t i o n
Use caution when power cycling the unit as this may affect devices receiving
operating power from the unit.
Power-cycling the Power Supply Shelf causes the unit to perform its power-
on self test, which normally resolves any temporary operational problems.
Checking the Unit’s LEDs
The self test passes if the Fault LED on the front of the Power Supply Shelf
goes off after approximately 8 seconds. If this LED stays on longer than 15
seconds or begins flashing, there may be a problem with the unit.
See “Diagnosing with the LEDs” on page 3-2 for information on interpreting
the LED patterns.
Testing Cabling
EPS cables that fail to provide a link or provide an unreliable link between the
unit and the connected device may be faulty. To verify your cable, try using it
to connect to a device that is known to operate correctly or try using a different
port. If the problem persists, replace it with another cable.
HP Customer Support Services
If you are still having trouble with your Power Supply Shelf, Hewlett-Packard
offers support 24 hours a day, seven days a week through a number of
automated electronic services. See the Customer Support/Warranty booklet
that came with your Power Supply Shelf for information on how to use these
services to get technical support. The ProCurve Web site,
www.procurve.com
also provides up-to-date support information under “product support”.
Additionally, your HP-authorized network reseller can provide you with assis-
tance, both with services they offer and with services offered by HP.