Lenovo ThinkSystem ST550 7X09, Maintenance Manual

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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: To Disconnect:
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. 1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
Figure 105. Fixed power supply label on the cover
The following tips describe the information that you must consider when you remove a power supply with dc
input.
CAUTION:
240 V dc input (input range: 180-300 V dc) is supported in China ONLY. Power supply with 240 V dc
input cannot support hot plugging power cord function. Before removing the power supply with dc
input, please turn off server or disconnect dc power sources at the breaker panel or by turning off the
power source. Then, remove the power cord.
在直流输入状态下，若电源供应器插座不支持热插拔功能，请务必不要对设备电源线进行热插拔，此操作可能
导致设备损坏及数据丢失。因错误执行热插拔导致的设备故障或损坏，不属于保修范围。
Chapter 3
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Hardware replacement procedures
137