DANGERTo prevent electrical shock hazard, disconnect all power cables from the electrical outlet beforerelocating the system.D01FRU Identify LEDsThis system is configured with an arrangement of LEDs that help identify various components of thesystem. These include, but are not limited to:v Rack identify LEDv CEC drawer identify LEDv I/O drawer identify LEDv RIO port identify LEDv FRU identify LEDv Power subsystem FRUsv CEC subsystem FRUsv I/O subsystem FRUsv I/O adapter identify LEDv DASD identify LEDThe identify LEDs are arranged hierarchically with the FRU identify LED at the bottom of the hierarchy,followed by, the corresponding CEC or I/O drawer identify LED, and the corresponding rack identify LED tolocate the failing FRU more easily. Any identify LED in the system may be flashed when the system is inthe failed state with power on by using the service processor LED Control Menu contained in the “SystemInformation Menu” on page 238. See “System Information Menu” on page 238 for information on how touse the LED Control Menu.Any identify LED in the system may also be flashed by using the “Identify and Attention Indicators” task inthe AIX diagnostic programs. The procedure for operating the Identify and Attention Indicators task in theAIX diagnostics is outlined in the chapter entitled “Tasks and Service Aids” in the RS/6000 EserverpSeries Diagnostic Information for Multiple Bus Systems, order number SA38-0509.If the service processor menus and the AIX diagnostics are not available, the FRU identify LEDs may beflashed by one of following additional procedures.1. If the system is configured as a full partition, the system can be booted to the open firmware promptand the FRU-LED-MENU command entered. A menu displays that will allow you to turn on the desiredFRU identify LED. For instructions on setting up the boot mode to enable the boot to the openfirmware prompt, see the “System Power Control Menu” on page 235.2. If an HMC is attached, it may be used to activate and deactivate a FRU identify LED. For instructionson activating and deactivating a FRU identify LED, see the Service Focal Point chapter of the IBMHardware Management Console for pSeries Installation and Operations Guide, order numberSA38-0590.Find the symptom in the following table; then follow the instructions given in the action column.Symptom ActionThe base system drawer will not power on and no errorcodes are available.Go to “MAP 1521: Base System Drawer With PowerFailure and No Error Codes” on page 100.Error code 1011 1B0x in the SPCN error codes tabledirected you here.Go to “MAP 1523: The SPCN Error Codes Table DirectedYou Here and the Error Code is 1011 1B0x” on page 107.Chapter 3. Maintenance Analysis Procedures (MAPs) 99
