Lenovo ThinkSystem SR860 V3 User Manual page 235

To Connect:
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 cord(s) to the product.
• Ensure correct polarity of -48 V dc connections:
RTN is + and -Vin (typical -48 V) dc is -. Earth
ground should be connected very well.
4. Connect dc power cord(s) to subject power source
(s).
5. Turn ON all the power source(s).
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.
Attention:
• Read "Installation Guidelines" on page 43
work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
"Power off the server" on page
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-
sensitive components in their static-protective packages until installation, and handling these devices with
an electrostatic-discharge wrist strap or other grounding system.
• If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top covers,
or remove the server from the rack. See
Note: A power supply bracket is only available on models configured with CRPS power supplies.
Procedure
Step 1. Make preparation for the task.
a. Remove the power supply unit. See
b. Remove the front top cover. See
c. Remove the rear top cover. See
d. Remove the PCIe riser. See
Step 2. Remove the power supply bracket screw
To Disconnect:
1. Disconnect or turn off the subject dc power source(s)
2. Remove the subject dc cord(s) and make sure the
3. Unplug the subject power supply unit(s) from the
and "Safety inspection checklist" on page 44
58.
"Remove the server from rails" on page
"Remove a hot-swap power supply unit" on page
"Remove the front top cover" on page
"Remove the rear top cover" on page
"Remove the PCIe riser" on page
(at the breaker panel) before removing the power
supply unit(s).
wire terminal of power cord(s) is insulated.
system housing.
58.
174.
.
Chapter 5 Hardware replacement procedures
to ensure that you
233.
272.
274.
225