Lenovo 5457 Installation And Service Manual page 267

The power control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power 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.
Attention: During normal operation, each power-supply bay must contain either a power supply or power-
supply filler for proper cooling.
To install a hot-swap power supply on the 5U server model with hot-swap power supplies, complete the
following steps.
1. Read the safety information in
2. Place the power supply into the bay guides.
3. Using the handle, push the power supply toward the front of the chassis until it locks into place.
"Safety" on page v and "Installation guidelines" on page
.
Chapter 6 Removing and replacing components
31.
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