IBM 847661U Hardware Maintenance Manual - Page 233
and configuration procedures., covers, unless instructed otherwise in the installation
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Caution: Never remove the cover on a power supply or any part (power backplane and AC box) that has the following label attached. Hazardous voltage, current, and energy levels are present inside the power supplies, power backplane, and AC box. There are no serviceable parts inside the power supplies, power backplane, or AC box. If you suspect a problem with one of these parts, contact an IBM service technician. Caution: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunications systems, networks, and modems before you open the server covers, unless instructed otherwise in the installation and configuration procedures. Caution: The power cable to the fan should be disconnected whenever the fan assembly is not installed in the server; otherwise, the fan might start turning while you are holding it and the fan blades could injure your fingers. >50 kg (110 lbs) Caution: Do not place any object weighing more than 50 kg (110 lbs) on top of the rack model of the server. Related service information 225