System Reliability Guidelines; Working Inside The Server With The Power On; Handling Static-Sensitive Devices - IBM 8849 Service Manual

v When you are finished working on the server, reinstall all safety shields, guards,
v For a list of supported options for the server, see http://www.ibm.com/servers/

System reliability guidelines

To help ensure proper cooling and system reliability, make sure that:
v Each of the drive bays has a drive or a filler panel and electromagnetic
v There is adequate space around the server to allow the server cooling system to
v You have followed the cabling instructions that come with optional adapters.
v You have replaced a failed fan as soon as possible.
v You have kept the preinstalled air deflector in place unless directed to remove it

Working inside the server with the power on

Attention:
the server is powered-on might cause the server to halt, which could result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when working inside the server with the
power on.
You might have to have the server turned on while the cover is off, to look at
system-board LEDs or (trained service technicians only) to test a replacement
power supply. Follow these guidelines when you work inside a server that is turned
on:
v Avoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirts
v Do not allow your necktie or scarf to hang inside the server.
v Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist
v Remove items from your shirt pocket, such as pens and pencils, that could fall
v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws,

Handling static-sensitive devices

Attention:
To avoid damage, keep static-sensitive devices in their static-protective packages
until you are ready to install them.
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IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide
hot-swap component for any additional procedures that you might have to
perform before you remove or install the component.
labels, and ground wires.
eserver/serverproven/compat/us/.
compatibility (EMC) shield installed in it.
work properly. Leave approximately 50 mm (2 in.) of open space around the front
and rear of the server. Do not place objects in front of the fans. For proper
cooling and airflow, replace the server cover before turning on the server.
Operating the server for extended periods of time (more than 30 minutes) with
the server cover removed might damage server components.
in this publication or by IBM Service. See the illustration on page 89 for the
location of the air deflector in the server.
Static electricity that is released to internal server components when
before working inside the server; do not wear cuff links while you are working
inside the server.
watches.
into the server as you lean over it.
into the server.
Static electricity can damage the server and other electronic devices.