Remove A Power Supply Unit - Lenovo ThinkSystem SR665 V3 User Manual

CAUTION:
240 V DC input (input range: 180-300 V) is supported in Chinese Mainland ONLY.
Perform the following steps to safely remove the power cord of one 240 V DC power supply unit. Otherwise,
there can be data loss and other damages to the equipment. Damages and losses resulting from inappropriate
operations will not be covered by the manufacturer's warranty.
1. Turn off the server.
2. Disconnect the power cord from the power source.
3. Disconnect the power cord from the power supply unit.
S035
CAUTION:
Never remove the cover on a power supply or any part that has this 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.
S019
CAUTION:
The power-control button on the device does not turn off the electrical current supplied to the device. The
device also might have more than one connection to dc power. To remove all electrical current from the device,
ensure that all connections to dc power are disconnected at the dc power input terminals.

Remove a power supply unit

Follow instructions in this section to remove a power supply unit.
About this task
If the power supply unit to be removed is the only one installed, the power supply unit is non-hot-swap.
Before removing it, you must turn off the server first. To support redundancy mode or hot-swap, install an
additional hot-swap power supply unit.
Attention:
• Read "Installation Guidelines" on page 39
work safely.
ThinkSystem SR665 V3 User Guide
108
and "Safety inspection checklist" on page 40 to ensure that you