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• Make sure that the power cord is the correct type.
To view the power cords that are available for the server:
a. Go to:
http://dcsc.lenovo.com/#/
b. Click Preconfigured Model or Configure to order.
c. Enter the machine type and model for your server to display the configurator page.
d. Click Power ➙ Power Cables to see all line cords.
• Make sure that the insulation is not frayed or worn.
3. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo
alterations.
4. Check inside the server for any obvious unsafe conditions, such as metal filings, contamination, water or
other liquid, or signs of fire or smoke damage.
5. Check for worn, frayed, or pinched cables.
6. Make sure that the power-supply cover tighteners (screws or rivets) have not been removed or tampered
with.
System reliability guidelines
Review the system reliability guidelines to ensure proper system cooling and reliability.
Make sure the following requirements are met:
• When the system comes with redundant power, a power supply must be installed in each power-supply
bay.
• Adequate space around the node and chassis must be spared to allow the cooling system to work
properly. Leave approximately 50 mm (2.0 in.) of open space around the front and rear of the chassis. Do
not place any object in front of the fans.
• For proper cooling and airflow, refit the node cover before you turn the power on. Do not operate the node
with the node cover removed, for it might damage node components.
• Cabling instructions that come with optional components must be followed.
• A removed hot-swap drive must be replaced within two minutes after removal.
• A removed hot-swap power supply must be replaced by another power supply unit or a PSU filler within
two minutes after removal.
• All processor sockets must contain either a socket cover or a processor with heat sink.
Handling static-sensitive devices
Review these guidelines before you handle static-sensitive devices to reduce the possibility of damage from
electrostatic discharge.
Attention: Prevent exposure to static electricity, which might lead to system halt and loss of data, by
keeping static-sensitive components in their static-protective packages until installation, and handling these
devices with an electrostatic-discharge wrist strap or other grounding system.
• Limit your movement to prevent building up static electricity around you.
• Take additional care when handling devices during cold weather, for heating would reduce indoor
humidity and increase static electricity.
• Always use an electrostatic-discharge wrist strap or other grounding system.
.
Chapter 4
Hardware replacement procedures
17
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