System Reliability Guidelines; Handling Static-Sensitive Devices; Returning A Device Or Component - IBM BladeCenter JS21 Types 8844 Service Manual

System reliability guidelines

To help ensure proper cooling and system reliability, observe the following
guidelines:
v Make sure that microprocessor socket 2 always contains either a microprocessor
v To maintain proper system cooling, do not operate the BladeCenter unit without a

Handling static-sensitive devices

Attention:
devices. To avoid damage, keep static-sensitive devices in their static-protective
packages until you are ready to install them.
To reduce the possibility of damage from electrostatic discharge, observe the
following precautions:
v When working on the BladeCenter T unit, use an electrostatic discharge (ESD)
v Limit your movement. Movement can cause static electricity to build up around
v Handle the device carefully, holding it by its edges or its frame.
v Do not touch solder joints, pins, or exposed circuitry.
v Do not leave the device where others can handle and damage it.
v While the device is still in its static-protective package, touch it to an unpainted
v Remove the device from its package and install it directly into the blade server
v Take additional care when handling devices during cold weather. Heating reduces

Returning a device or component

If you are instructed to return a device or component, follow all packaging
instructions, and use any packaging materials for shipping that are supplied to you.
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BladeCenter JS21 Types 7988 and 8844: Problem Determination and Service Guide
heat sink filler or a microprocessor and heat sink. If the blade server has only
one microprocessor, it must be installed in the microprocessor socket 1.
blade server, expansion unit, or filler blade installed in each blade bay. See the
documentation for your BladeCenter unit type for additional information.
Static electricity can damage the blade server and other electronic
wrist strap, especially when you will be handling modules, options, and blade
servers. To work properly, the wrist strap must have a good contact at both ends
(touching your skin at one end and firmly connected to the ESD connector on the
front or back of the BladeCenter T unit).
you.
metal part of the BladeCenter unit or any unpainted metal surface on any other
grounded rack component in the rack you are installing the device in for at least
2 seconds. This drains static electricity from the package and from your body.
without setting down the device. If it is necessary to set down the device, put it
back into its static-protective package. Do not place the device on the blade
server cover or on a metal surface.
indoor humidity and increases static electricity.