Sun Microsystems Netra CT 410, Service Manual

Page: 68 / 296

4-18 Netra CT Server Service Manual • February 2007
4.5 Troubleshooting the System Using the
Alarm Card Software
For information on troubleshooting using the alarm card software, refer to the Netra
CT Server System Administration Guide (819-2743-xx).
4.6 Troubleshooting a Power Supply Using
the Power Supply Unit LEDs
Two LEDs are on each power supply unit: a green ( ) LED and an amber ( )
LED. Use the LEDs on the power supply unit to troubleshoot each power supply
unit. Because there is one power supply unit in the Netra CT 410 server and two
power supply units in the Netra CT 810 server, the actions to take are different. The
following sections provide guidelines for each server.
4.6.1 Troubleshooting the Power Supply Unit in the
Netra CT 410 Server
Following are the states of the LEDs on the power supply unit in the Netra CT 410
server:
■
Green, flashing—The power supply unit is in the standby mode; the power
supply unit is powered on, yet it is not supplying power to the server.
■
Green, solid—Both the server and the power supply unit are powered on and
functioning properly.
■
Amber—A fault was found in the power supply unit. Replace the power supply
unit. See
Section 10.2, “Cold-Swappable Power Supply Unit” on page 10-5 for
those instructions.
■
Off—One of the following conditions apply:
■
The power supply locking mechanism is in the upper, unlocked position.
■
The accompanying cable is disconnected from the power distribution unit.
■
The accompanying power distribution unit failed.
■
The power supply unit failed.