IBM RS6000 Service Guide - Page 42

MAP 1520: Power Note: This is not a start of call MAP. Use this Power MAP only if you have been directed here from a MAP step in the IBM RS/6000 Diagnostic Information for Multiple Bus Systems. This procedure is used to locate power problems in system units. If a problem is detected, this procedure helps you isolate the problem to a failing unit. Observe the following safety notice during service procedures. DANGER An electrical outlet that is not correctly wired could place hazardous voltage on metal parts of the system or the devices that attach to the system. It is the responsibility of the customer to ensure that the outlet is correctly wired and grounded to prevent and electrical shock. Before installing or removing signal cables, ensure that the power cables for the system unit and all attached devices are unplugged. When adding or removing any additional devices to or from the system, ensure that the power cables for those devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. Use on hand, when possible, to connect or disconnect signal cables to prevent a possible shock from touching two surfaces with different electrical potentials. During an electrical storm, do not connect cables for display stations, printers, telephones, or station protectors for communication lines. CAUTION: This product is equipped with a three-wire power cable and plug for the user's safety. Use this power cable with a properly grounded electrical outlet to avoid electrical shock. DANGER To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. 2-12 Service Guide