IBM Netfinity 7100, User'S Reference Manual

Page: 148 / 200

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IBM® Netfinity® 7100 User’s Reference
The following table describes the AC and DC power LEDs.
Diagnostic panel LEDs
The following illustration shows the LEDs on the diagnostics panel inside the server.
See “Light path diagnostics” on page 135 for information on identifying problems
using these 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 server is not turned on (the power
LED is blinking on the front of the
server).
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, have the system
serviced.
Off Off There is an AC power problem.
Possible causes:
1. There is no AC power to the power
supply.
Actions: Verify that:
• The electrical cord is
properly connected to
the server.
• The electrical outlet
functions properly.
2. The power supply has failed.
Action: Replace the power supply.
If the problem persists, have the system
serviced.