A Single-Power-Supply Server Operating At 208 V Ac; System Reliability Guidelines - Huawei Tecal RH5485 Problem Determination And Service Manual

5 Removing and replacing components















5.1.1 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.

5.1.2 System reliability guidelines

To help ensure proper cooling and system reliability, make sure that the following
requirements are met:

5-2
In a two-node configuration, you must remove the QPI cables to separately debug the
servers.
If the server is connected to a MAX5 memory expansion modules, see the
documentation for the QPI or EXA cabling kit for important cabling information when
disconnecting or connecting QPI or EXA cables.
Observe good housekeeping in the area where you are working. Place removed covers
and other parts in a safe place.
If 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.
Do 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.
Make sure that you have an adequate number of properly grounded electrical outlets for
the server, monitor, and other devices.
Back up all important data before you make changes to disk drives.
Have a small flat-blade screwdriver available.
To view the error LEDs on the system board and internal components, leave the server
connected to power.
You do not have to turn off the server to install or replace hot-swap power supplies,
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.
Blue 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.
Orange 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.
When you are finished working on the server, reinstall all safety shields, guards, labels,
and ground wires.
Each of the drive bays has a drive or a filler installed in it.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Tecal RH5485 Server
Problem Determination and Service Guide
Issue 02 (2011-05-25)