IBM 71453RU manual Single-power-supply server operating at 208 V ac, System reliability guidelines

starts, if an operating system is installed, or that a 19990305 error code is displayed, indicating that an operating system was not found but the server is otherwise working correctly. If the server is not working correctly, see the Problem Determination and Service Guide on the IBM Documentation CD for information about how to run diagnostics.

vObserve good housekeeping in the area where you are working. Place removed covers and other parts in a safe place.

vIf you must start the server while the cover is removed, make sure that no one is near the server and that no tools or other objects have been left inside the server.

vDo not attempt to lift an object that you think is too heavy for you. If you have to lift a heavy object, observe the following precautions:

–Make sure that you can stand safely without slipping.

–Distribute the weight of the object equally between your feet.

–Use a slow lifting force. Never move suddenly or twist when you lift a heavy object.

–To avoid straining the muscles in your back, lift by standing or by pushing up with your leg muscles.

vMake sure that you have an adequate number of properly grounded electrical outlets for the server, monitor, and other devices.

vBack up all important data before you make changes to disk drives.

vHave a small flat-blade screwdriver available.

vTo view the error LEDs on the system board and internal components, leave the server connected to power.

vYou do not have to turn off the server to install or replace hot-swap power supplies, hot-swap hard disk drives, hot-swap fans, or hot-plug Universal Serial Bus (USB) devices. However, you must turn off the server before you perform any steps that involve removing or installing adapter cables.

vBlue on a component indicates touch points, where you can grip the component to remove it from or install it in the server, open or close a latch, and so on.

vOrange on a component or an orange label on or near a component indicates that the component can be hot-swapped, which means that if the server and operating system support hot-swap capability, you can remove or install the component while the server is running. (Orange can also indicate touch points on hot-swap components.) See the instructions for removing or installing a specific hot-swap component for any additional procedures that you might have to perform before you remove or install the component.

vWhen you are finished working on the server, reinstall all safety shields, guards, labels, and ground wires.

A single-power-supply server operating at 208 V ac

One power supply operating at 208 V ac supports a fully populated server, but it does not support power or cooling redundancy.

System reliability guidelines

To help ensure proper cooling and system reliability, make sure that the following requirements are met:

vEach of the drive bays has a drive or an electromagnetic compatibility (EMC) shield installed in it.

Chapter 2. Installing optional devices 39