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DANGER
To prevent electrical shock hazard, disconnect all power cables from the electrical outlet before
relocating the system.
D01
FRU Identify LEDs
This system is configured with an arrangement of LEDs that help identify various components of the
system. These include, but are not limited to:
v Power subsystem FRUs
v System unit FRUs
v I/O adapter identify LED
v Disk drive identify LED
The 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 to
locate the failing FRU more easily. Any identify LED in the system may be flashed when the system is in
the failed state with power on by using the service processor LED Control Menu contained in the "System
Information Menu" on page 205. See "System Information Menu" on page 205 for information on how to
use the LED Control Menu.
Any identify LED in the system may also be flashed by using the "Identify and Attention Indicators" task in
the AIX diagnostic programs. The procedure for operating the Identify and Attention Indicators task in the
AIX diagnostics is outlined in the chapter entitled "Tasks and Service Aids" in the RS/6000 Eserver
pSeries 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 be
flashed by one using the open firmware prompt. If the system is configured as a full partition, the system
can be booted to the open firmware prompt and the FRU-LED-MENU command entered. A menu displays
that will allow you to turn on the desired FRU identify LED. For instructions on setting up the boot mode to
enable the boot to the open firmware prompt, see the "System Power Control Menu" on page 202.
Find the symptom in the following table; then follow the instructions given in the action column.
Symptom
The system will not power on and no error codes are
available.
Error code 1011 1B0x in the SPCN error codes table
directed you here.
Action
Go to "MAP 1521: System Unit With Power Failure and
No Error Codes" on page 78.
Go to "MAP 1523: The SPCN Error Codes Table Directed
You Here and the Error Code is 1011 1B0x" on page 84.
Chapter 3. Maintenance Analysis Procedures (MAPs)
77
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