Lenovo THINKSERVER 3821 - Manual (Page 184)

CAUTION:
Never remove the cover on a power supply or any part that has the following
label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts inside
these components. If you suspect a problem with one of these parts, contact
a service technician.
1 Hot-swap power supply
2 Release latch
To install a hot-swap power supply, do the following:
1. Read the safety information Chapter 2, “Safety information,” on page 5.
Attention: Static electricity that is released to internal server components
when the server is powered on might cause the server to halt, which might
result in the loss of data. To avoid this potential problem, always use an
electrostatic-discharge wrist strap or other grounding system when you work
inside the server with the power on.
2. Touch the static-protective package that contains the power supply to any
unpainted metal surface on the server; then, remove the power supply from the
package.
3. Remove the power-supply filler panel from the power bay, if one is installed.
4. Place the power supply into the power-supply cage and push it in until it locks
into place.
Note: If only one hot-swap power supply is installed in the server, a
power-supply filler must be installed in the empty power bay.
176 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual