System Reliability Guidelines; Working Inside The Solution With The Power On - Lenovo ThinkAgile CP Part Replacement And Component Maintenance Procedures

Note: See the system specific instructions for removing or installing a hot-swap drive for any additional
procedures that you might need to perform before you remove or install the drive.
• After finishing working on the solution, make sure you reinstall all safety shields, guards, labels, and
ground wires.

System reliability guidelines

Review the system reliability guidelines to ensure proper system cooling and reliability.
Ensure that the following requirements are met:
• When the server comes with redundant power, a power supply must be installed in each power-supply
bay.
• Adequate space around the server must be spared to allow server cooling system to work properly. Leave
approximately 50 mm (2.0 in.) of open space around the front and rear of the server. Do not place any
object in front of the fans.
• For proper cooling and airflow, refit the server cover before you turn the power on. Do not operate the
server for more than 30 minutes with the server cover removed, for it might damage server components.
• Cabling instructions that come with optional components must be followed.
• A failed fan must be replaced within 48 hours since malfunction.
• A removed hot-swap fan must be replaced within 30 seconds after removal.
• A removed hot-swap drive must be replaced within two minutes after removal.
• A removed hot-swap power supply must be replaced within two minutes after removal.
• Every air baffle that comes with the server must be installed when the server starts (some servers might
come with more than one air baffle). Operating the server with a missing air baffle might damage the
processor.
• All processor sockets must contain either a socket cover or a processor with heat sink.
• When more than one processor is installed, fan population rules for each server must be strictly followed.
• Do not operate the enclosure without the System Management Module (SMM) assembly installed.
Operating the solution without the SMM assembly might cause the system to fail. Replace the
SMMassembly as soon as possible after removal to ensure proper operation of the system.

Working inside the solution with the power on

You may need to keep the power on with the solution cover removed to look at system information on the
display panel or to replace hot-swap components. Review these guidelines before doing this.
Attention: The solution may stop and loss of data may occur when internal solution components are
exposed to static electricity. To avoid this problem, always use an electrostatic-discharge wrist strap or other
grounding systems when working inside the solution with the power on.
• Avoid loose-fitting clothing, particularly around your forearms. Button or roll up long sleeves before
working inside the solution.
• Prevent your necktie, scarf, badge rope, or long hair from dangling into the solution.
• Remove jewelry, such as bracelets, necklaces, rings, cuff links, and wristwatches.
• Remove items from your shirt pocket, such as pens and pencils, in case they fall into the solution as you
lean over it.
• Avoid dropping any metallic objects, such as paper clips, hairpins, or screws into the solution.
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ThinkAgile CP Part Replacement and Component Maintenance Procedures