IBM Power System POWER7 Series Common Service Procedures page 18

Figure 1. Control panel with labels
3. Press the power button (A), as shown in the preceding figure, on the control panel.
4. Observe the following after pressing the power button:
v The power-on light flashes slowly (standby) and then becomes solid.
v The system cooling fans are activated after approximately 30 seconds and begin to accelerate to
operating speed.
v Progress indicators, also referred to as checkpoints, appear on the control panel display while the
system is being started. The power-on light on the control panel stops flashing and remains on,
indicating that system power is on.
Powering off a system by using a management console
Attention: If possible, have the customer shut down the running logical partitions on the managed
system before powering off the managed system. Powering off the managed system without first shutting
down the logical partitions causes the logical partitions to shut down abnormally and can cause data loss
or an extended initial program load (IPL) for one or more of the partitions the next time the system is
powered on.
To power off a managed system by using HMC, complete the following steps:
1. In the navigation area, expand Systems Management > Servers.
2. Select the check box next to the name of the server you want to enable the tasks for that server.
3. From the Tasks menu, click Operations > Power off. Follow all additional instructions in the
interface.
4. Continue with "Removing the power cords" on page 5.
To power off a managed server by using an SDMC, complete the following steps:
1. On the Welcome page under the Resources tab, select the server.
2. Click Actions > Operations > Power Off.
Powering off a system without a management console
1. If an operating system is running, proceed with step 2. Otherwise, press the power button (A), as
shown in Figure 1 and hold for 5 seconds (a countdown is shown on the display panel). The system
power turns off. Proceed to step 4 on page 5.
2. Log in to the system as a user with the authority to run the shutdown command.
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