IBM 866251Y - Netfinity 5500 M20, Руководство по техническому обслуживанию аппаратной части, Страница: 259 / 386

Power supply LEDs
The ac and dc Power LEDs on the power supply provide
status information about the power supply. See “Power
supplies” on page 250 for the location of these LEDs.
The following table describes the ac and dc Power LEDs.
AC Power
LED DC Power
LED Description and action
On On The power supply is on and
operating correctly.
On Off There is a dc power problem.
Possible causes:
1. The Power Control button
on the front of the server is
in the Off position.
Action: Press the Power
Control button to start the
server.
2. The power supply has
failed.
Action: Replace the
power supply.
If the problem persists, go to
“General checkout” on page 8.
Off Off There is an ac power problem.
Possible causes:
1. There is no ac power to the
power supply.
Actions: Verify that:
Ÿ
The power cord is
properly connected to
the server.
Ÿ
The power outlet
functions properly.
2. The power supply has
failed.
Action: Replace the
power supply.
If the problem persists, go to
“General checkout” on page 8.
Netfinity 5500 M20 - Type 8662
251