Chapter 3
73
A-Class System Service
A-Class Server Trouble Shooting
Troubleshooting with Light-Emitting Diode (LED) Interpretation
The LED icons shown above are physically located on the right-hand side of the
server, when you are facing the front. The icon on the far right is a green circle that,
under normal conditions, emits a steady light when server power is on. The middle
icon of the three is an amber heart shape that emits, under normal conditions, a
“heartbeat” blinking light when the server is operating normally. The left-most icon
is also amber and represents the Local Area Network (LAN) signal. Under normal
conditions, the LAN icon blinks irregularly as dictated by LAN signal activity.
Additional selftest information is provided in the sub-sections that follow.
Successful Power-on Selftest.
When power is applied to the server, the green POWER icon will light upon
successful completion of the power supply selftest, which takes approximately 2
seconds. If the green POWER LED fails to light, check the power source. If the
power source is valid, the problem is usually in the A-Class server power supply.
Power supply failures are repaired by replacing the A-Class Exchange Base Unit
(EBU). Refer to the “Replacing an A-Class Server Exchange Base Unit (EBU)”
section. After the green POWER icon comes on, both the amber HEARTBEAT and
amber LAN ACTIVITY icons will momentarily light and go out. When selftest is
complete, the firmware Main Menu screen will display on the console, and the green
POWER icon will emit a steady light. LED icon states will appear as shown below:
The following table shows how to interpret front panel LED blinking codes when
selftest has failed and the firmware Main Menu screen is inaccessible. During the
conditions shown in this table, the green POWER icon is ON.
NOTE
The LED pattern is only valid if the Firmware Main Menu is not displayed at the
Console.
Off Off
On
Summary of Contents for 9000 A-180
Page 1: ...User s Manual HP 9000 Model A 180 Manufacturing Part Number Aclassdoc00 February 2000 ...
Page 17: ...Chapter 2 17 A Class Server Installation 2 A Class Server Installation aclassdoc00 ...
Page 66: ...66 Chapter2 A Class Server Installation A Class Server System Software Configuration ...
Page 67: ...Chapter 3 67 A Class System Service 3 A Class System Service aclassdoc00 ...
Page 122: ...122 Chapter3 A Class System Service Replacing an A Class Server Exchange Base Unit EBU ...