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SCSI bus activity LED: This green LED is on when there is activity on the SCSI
bus.
Information LED: This amber light is on if the server power supplies are
nonredundant or some other noncritical event has occurred. See the LEDs on the
Level 2 diagnostic LED panel or on the system board for specific error information.
For details, see "Level 2 diagnostic and system board LEDs" on page 68.
Fault LED: This amber LED is on if a system error has occurred. See the LEDs on
the Level 2 diagnostic LED panel or on the system board for specific error
information. For details, see "Level 2 diagnostic and system board LEDs" on page
68.
Reset button: Press this button to reset the server and run the power-on self-test
(POST).
Power-control button: If the server is in operational mode, press this button to put
it into standby mode. If the server is in standby mode, press this button to restore it
to operational mode. See "Turning on the server" and "Turning off the server" on
page 11 for more information about applying and removing external power to the
server.
Power LED: This green LED is on if ac and dc power are present in the server. If
this LED is flashing, the server is in standby mode (ac power is present, but the
power supplies are turned off). If this LED is off, either ac power, all power supplies,
or the light has failed.
Note: If this LED is off, it does not mean that there is no electrical power present in
Turning on the server
Turning on the server refers to the act of plugging the server power cords into the
power source and pressing the power-control button. After you install the network
operating system in the server, this typically causes the operating system to start.
Complete the following steps to turn on the server.
1. Turn on all external devices, such as the monitor.
2. Plug the server power cords into the power source.
3. Wait 30 seconds; then, press the power-control button on the operator
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Hardware Maintenance Manual: xSeries 360 Type 8686
the server. The LED might be burned out. To remove all electrical current
from the server, you must unplug the server power cords from the electrical
outlets.
Note: After you plug the power cords into the power source, wait 30 seconds
before pressing the power-control button on the operator information
panel. During this time, the Remote Supervisor Adapter is initializing and
the power-control button does not respond. The power LED on the
information panel blinks, indicating that ac power is present in the server.
Note: Plugging the power cords into the power source might cause the server
to start automatically. This is an acceptable action.
information panel. The power LED comes on and the power-on self-test (POST)
begins.
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Table of Contents
Troubleshooting
