Lenovo 6444, 6447, 6446, 6445 manual Handling static-sensitive devices, Removing the cover

The server supports hot-plug, hot-add, and hot-swap devices and is designed to operate safely while it is turned on and the cover is removed. Follow these guidelines when you work inside a server that is turned on:

vAvoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirts before working inside the server; do not wear cuff links while you are working inside the server.

vDo not allow your necktie or scarf to hang inside the server.

vRemove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist watches.

vRemove items from your shirt pocket, such as pens and pencils, that could fall into the server as you lean over it.

vAvoid dropping any metallic objects, such as paper clips, hairpins, and screws, into the server.

Handling 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:

vLimit your movement. Movement can cause static electricity to build up around you.

vThe 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

vHandle the device carefully, holding it by its edges or its frame.

vDo not touch solder joints, pins, or exposed circuitry.

vDo not leave the device where others can handle and damage it.

vWhile the device is still in its static-protective package, touch it to an unpainted metal surface on the outside of the server for at least 2 seconds. This drains static electricity from the package and from your body.

vRemove the device from its package and install it directly into the server 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.

vTake additional care when handling devices during cold weather. Heating reduces indoor humidity and increases static electricity.

Removing the cover

Important: Before you install optional hardware, make sure that the server is working correctly. Start the server, and make sure that the operating system 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 Hardware Maintenance Manual for diagnostic information.

To remove the cover, complete the following steps:

1.Read the safety information that begins on page v and “Installationguidelines” on page 7.

Chapter 2. Installing optional devices 9