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 fasteners (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 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 after 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. 
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.
Chapter 4. Hardware replacement procedures 123