HP 620 User Manual
Page 27
3-3
Troubleshooting
Diagnosing with the LEDs
Troubl
esho
otin
g
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
One or more of
the unit cooling
fans may have
failed.
Try disconnecting power from the unit and waiting a few moments. Then reconnect the
power to the unit and check the LEDs again. If the error indication reoccurs, one or more
of the fans has failed. The unit has six fans and may continue to operate under this
condition if the ambient temperature does not exceed normal room temperature, but for
best operation, the unit 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 booklet for more information.
➎
There is an over
temperature
condition in the
unit.
Check the log file of the connected switch for more detailed information. Make sure the
air flow around the sides and back of the unit is not restricted. Also check to see that no
hot exhaust air from another device is blowing on the unit. If this unit is in a fully enclosed
rack, make certain that the ambient temperature inside the rack near the unit does not
exceed 55°C (131°F) for the 620 RPS/EPS.
➏
The port for
which the LED is
blinking 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.
➐
RPS power is not
available to the
connected
device.
Check the log file of the connected switch for more detailed information.