Handling Static-Sensitive Devices; Servicing Multi-Node Systems - IBM X3950 X5 Problem Determination And Service Manual

v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws,

Handling static-sensitive devices

This topic provides instructions for how to handle static-sensitive devices.
Attention: Static electricity can damage the server and other electronic 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 Limit your movement. Movement can cause static electricity to build up around
v Wear an electrostatic-discharge wrist strap, if one is available.
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 server
v Take additional care when you handle devices during cold weather. Heating

Servicing multi-node systems

This topic provides general information about servicing multi-node systems.
Note: Before you pull the servers out of the rack, make sure that the rack tip plate
is installed.
If you are servicing a QPI two-node scaled configuration, you can slide both units
out of the rack at the same time to access components in the top node. To access
the components in the bottom node, you must disconnect the QPI cables in the
rear of the server and unlatch the two-node bracket from the top node in the rear.
If you are servicing components in a server to which a memory expansion module
is attached, slide the server and memory expansion module out of the rack
together, as one unit.
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IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
into the server.
you.
metal surface on the outside of the server 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 server
cover or on a metal surface.
reduces indoor humidity and increases static electricity.