Lenovo ThinkAgile CP Part Replacement And Component Maintenance Procedures page 35

DANGER
Electrical current from power, telephone, and communication cables is hazardous.
To avoid a shock hazard:
– Do not connect or disconnect any cables or perform installation, maintenance, or
reconfiguration of this product during an electrical storm.
– Connect all power cords to a properly wired and grounded electrical outlet.
– Connect to properly wired outlets any equipment that will be attached to this product.
– When possible, use one hand only to connect or disconnect signal cables.
– Never turn on any equipment when there is evidence of fire, water, or structural damage.
– Disconnect the attached power cords, telecommunications systems, networks, and modems
before you open the device covers, unless instructed otherwise in the installation and
configuration procedures.
– Connect and disconnect cables as described in the following table when installing, moving, or
opening covers on this product or attached devices.
To Connect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlet.
5. Turn device ON.
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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.
Before you install a hot-swap power supply:
Notes:
1. Ensure that the devices you are installing are supported. For a list of supported optional devices for the
solution, see
http://www.lenovo.com/us/en/serverproven/
2. Do not install two power supply units with different wattages. Related information is available from the
following:
• Read the label on the top cover for maximum wattage output of installed power supply units. Only
replace the existing units with those having the same wattage as marked on the label.
• Check the rear of the node to ensure that there is no length difference between the two installed units.
A visible difference in length means that the two units have different wattages, and one of them must
be replaced.
To Disconnect:
1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
.
.
Chapter 5 Compute block maintenance procedures
29