Lenovo ThinkSystem SR550 Maintenance Manual

Also see for ThinkSystem SR550: Manual Manual Product guide Quick start guide Setup guide

Attention: This type of power supply is hot-swap only when two power supplies are installed forredundancy. If only one power supply is installed, you must power off the server before removing the powersupply.The following tips describe the information that you must consider when you remove a power supply with dcinput.CAUTION:1. 240 V dc input (input range: 180-300 V dc) is ONLY supported in Chinese Mainland.2. Power supplies with 240 V dc are not hot-swappable. To remove the power cord, ensure you haveturned off the server or disconnected the dc power sources at the breaker panel.3. In order for the ThinkSystem products to operate error free in both a DC or AC electricalenvironment, a TN-S earthing system which complies to 60364-1 IEC 2005 standard has to bepresent or installed.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。NEVER CONNECT AND DISCONNECT THE POWER SUPPLY CABLE AND EQUIPMENT WHILE YOUREQUIPMENT IS POWERED ON WITH DC SUPPLY (hot-plugging). Otherwise you may damage theequipment and result in data loss, the damages and losses result from incorrect operation of the equipmentwill not be covered by the manufacturers’ warranty.S035CAUTION: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 noserviceable parts inside these components. If you suspect a problem with one of these parts, contacta service technician.S019CAUTION: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 currentfrom the device, ensure that all connections to dc power are disconnected at the dc power inputterminals.Chapter 3. Hardware replacement procedures 95