Handling Static-Sensitive Devices; Returning A Device Or Component; Removing And Replacing Structural Parts; Removing The Shipping Bracket - Lenovo NeXtScale n1200 Installation And Service Manual

• You have replaced a compute node within 3 minutes of removal or a filler is installed.
• Make sure that the ventilation holes on the compute node are not blocked.
• The compute node CMOS battery must be operational. If the CMOS battery becomes defective, replace it
immediately. See the documentation that comes with the compute node for instructions.
• Replace the fan power control as soon as possible after removal to ensure proper operation of the
chassis.

Handling static-sensitive devices

Use this information to handle static-sensitive devices.
Attention: Static electricity can damage the compute node 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:
• When you work on a chassis that has an electrostatic discharge (ESD) connector, use a wrist strap,
especially when you handle modules, optional devices, or compute node. To work correctly, 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 chassis).
• Limit your movement. Movement can cause static electricity to build up around you.
• The use of a grounding system is recommended. For example, wear an electrostatic-discharge wrist
strap, if one is available. Always use an electrostatic-discharge wrist strap or other grounding system
when working inside the server with the power on.
• Handle the device carefully, holding it by its edges or its frame.
• Do not touch solder joints, pins, or exposed circuitry.
• Do not leave the device where others can handle and damage it.
• While the device is still in its static-protective package, touch it to an unpainted metal part of the chassis
or any unpainted metal surface on any other grounded rack component in the rack in which you are
installing the device for at least 2 seconds. This drains static electricity from the package and from your
body.
• Remove the device from its package and install it directly into the compute node 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 compute node cover or on a metal surface.
• Take additional care when handling devices during cold weather. Heating reduces indoor humidity and
increases static electricity.

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.

Removing and replacing structural parts

Replacement of structural parts is your responsibility. If Lenovo installs a structural part at your request, you
will be charged for the installation.
The illustrations in this document might differ slightly from your hardware.

Removing the shipping bracket

Use this information to remove the shipping bracket.
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Chapter 4 Removing and replacing components
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