Blade Server Power, Controls, And Indicators; Turning On The Blade Server; Turning Off The Blade Server - IBM BladeCenter QS20 Problem Determination And Service Manual

Figure 1. System board components

Blade server power, controls, and indicators

This section describes the power features, how to turn on and turn off the blade
server, and what the controls and indicators mean.

Turning on the blade server

Notes:
v After you have installed the BladeCenter QS20, wait until the power-on LED on
v While the blade server is powering up, the power-on LED on the front of the
v Throughout this document, the Management Module Web-based user interface is
After you have installed the BladeCenter QS20, the blade server can start in any of
the following ways:
v You can press the power-control button on the front of the blade server (behind
v If a power failure occurs, the BladeCenter unit and then the blade server can
v You can use the BladeCenter Management Module Web interface to turn on the

Turning off the blade server

When you turn off the blade server, it is still connected to power through the
BladeCenter unit. The blade server can respond to requests from the service
processor, such as a remote request to turn on the blade server.
PCI-Express
(J14)
Battery (BH1) (J15)
PCI expansion slot
the blade server flashes slowly before pressing the blade server power control
button. Before the LED flashes, the service processor in the BladeCenter
Management Module is initializing, and the power control button on the blade
server does not respond.
server is lit. See "Blade server controls and LEDs" on page 6 for the power-on
LED states.
also known as the BladeCenter Management Module Web interface.
the control panel door) to start the server.
start automatically when power is restored (if the blade server is configured
through the BladeCenter Management Module to do so).
blade server remotely.
Microprocessor 1
and heat sink (U31)
Microprocessor 0
and heat sink (U1)
Control panel
connector (J9)
Chapter 1. Introduction
5