Hardware Replacement Procedures - Lenovo ThinkSystem HR350A User Manual And Hardware Maintenance Manual

2.2 Hardware replacement procedures

Safety Precautions
Read and follow all safety precautions specified in "Read Me First". If the instructions provided with the server differs from the
instructions contained in this manual, contact a service technician from the supplier to confirm the correct procedures.
Note: The power button does not completely turn off the AC current supplied to the device. To remove all AC current from the device,
unplug all power cords connected to the server from the AC power sockets.
To ensure proper cooling and ventilation, be sure to replace the cover before using the server normally.
As the components of server as extremely sensitive to electrostatic discharge (ESD), the following operations should be
performed on ESD workbenches. Where ESD workbenches are not available, minimize ESD damage by doing the following:
1. Wear an ESD wrist strap, and connect it to a metal part of the server.
2. Touch the metal casing of the server chassis before handling other server components.
3. Ensure that part of your body is in contact with the metal chassis when removing or installing a component; this helps to release static
electricity.
4. Avoid unnecessary movement.
5. Always handle a component (especially boards) by its edges or frame.
6. Place the server on a grounded, static-free work surface. Use a conductive foam pad if available. Do not use the package that the
component came in.
7. Avoid sliding the unit across the work surface.
Tools required
1. Phillips (cross) screwdriver.
2. Anti-static wrist strap and conductive foam pad (recommended).
3. Pen and paper to record changes in server configuration, and information specific to installed components.
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