Lenovo HR630X V2, User Manual

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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.
S029
DANGER
For -48V dc power supply, electrical current from power cables is hazardous.
To avoid a shock hazard:
• To connect or disconnect -48V dc power cables when you need to remove/replace install
redundancy power supply unit(s).
To Connect: To Disconnect:
1. Turn OFF subject dc power source(s) and
equipment(s) that are attached to this product.
2. Install the power supply unit(s) into the system
housing.
3. Attach dc power cable(s) to the product.
• Ensure correct polarity of -48 V dc connections:
RTN is + and -48 V dc is -. Earth ground should
use a two-hole lug for safety.
4. Connect dc power cable(s) to subject power source
(s).
5. Turn ON all the power source(s).
1. Disconnect or turn off the subject dc power source
(s) (at the breaker panel) before removing the power
supply unit(s).
2. Remove the subject dc cable(s).
3. Unplug the subject power supply unit(s) from the
system housing.
Chapter 4
.
Hardware replacement procedures
53