HP J4818A Installation And Getting Started Manual page 49

Diagnostic Tips:
Tip Problem
–
The switch is not 1. Verify that the power cord is plugged into an active power source and to the switch.
plugged into an
active AC power
2. Try power cycling the switch by unplugging and plugging the power cord back in.
source, or the
3. If the Power LED is still not on, verify that the AC power source works by plugging
switch's power
supply may have
failed.
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 booklet for more
information.
—
A switch Try power cycling the switch. If the fault indication reoccurs, the switch may have failed.
hardware failure Call your HP-authorized LAN dealer, or use the electronic support services from HP to get
has occurred. All assistance. See the Customer Support/Warranty booklet for more information.
the LEDs will stay
on indefinitely.
˜
The switch has 1. Try resetting the switch by pressing the Reset button on the front of the switch, or by
experienced a
software failure
2. If the fault indication reoccurs, attach a console to the switch (as indicated in chapter
during self test.
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.
™
The switch Try disconnecting power from the switch and wait a few moments. Then reconnect the
cooling fan may power to the switch and check the LEDs again. If the error indication reoccurs, the fan
have failed. has failed and the switch should be replaced as soon as possible. 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.
š
The port Try power cycling the switch. If the fault indication reoccurs, the switch port may have
associated with failed. Call your HP-authorized LAN dealer, or use the electronic support services from
the blinking Link HP to get assistance. See the Customer Support/Warranty booklet for more information.
LED has failed
self test.
continued on the next page
Make sure these connections are snug.
another device into the outlet. Or try plugging the switch into a different outlet or try a
different power cord.
power cycling the switch.
2) and configure it to operate at 9600 baud. Then, reset the switch. Messages should
appear on the console screen and in the console log identifying the error condition.
You can view the console log at that point by selecting it from the console Main Menu.
Diagnosing with the LEDs
Solution
Troubleshooting
3-5