Lenovo System x3550 M4 Installation And Service Manual page 261

cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.
Statement 8
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.
To remove a hot-swap ac power supply, complete the following steps:
Step 1. Read the safety information that begins on "Safety" on page v and "Installation guidelines"
on page 31.
Step 2. If only one power supply is installed, turn off the server and peripheral devices and disconnect
all power cords.
Step 3. If the server is in a rack, at the back of the server, pull back the cable management arm to gain
access to the rear of the server and the power supply.
Step 4. Press and hold the release tab to the left. Grasp the handle and pull the power supply out of
the server.
.
Chapter 6 Removing and replacing components
247