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 the following:
v Rack identify LED
v CEC drawer identify LED
v I/O drawer identify LED
v RIO port identify LED
v FRU identify LED
– Power subsystem FRUs
– CEC subsystem FRUs
– I/O subsystem FRUs
v I/O adapter identify LED
v DASD 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 can 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 376.
Any identify LED in the system can also be flashed by using the ″Identify and Attention Indicators″ task in
diagnostics. The procedure to operate the ″Identify and Attention Indicators″ task in diagnostics is outlined
in the RS/6000 Eserver pSeries Diagnostic Information for Multiple Bus Systems.
If the service processor menus and the AIX diagnostics are not available, the FRU identify LEDs can be
flashed by one of following:
v If the system is configured as a full system partition, boot to the open firmware prompt. See the “System
Power Control Menu” on page 372 for instructions on setting up the boot mode to enable the boot to the
open firmware prompt. To display a menu that will allow you to turn on the desired FRU identify LED,
type FRU-LED-MENU on the command line.
v If the system is logically partitioned, the HMC must be attached. For instructions on activating and
deactivating a FRU identify LED, see the Service Focal Point chapter of the IBM Hardware
Management Console for pSeries Installation and Operations Guide, order number SA38-0590.
Symptom Action
The base system drawer will not power on and no error
codes are available.
Go to “MAP 1521: Base System Drawer With Power
Failure and No Error Codes” on page 107.
The I/O drawer does not power on and the power LED is
not lit.
Go to “MAP 1522: Cannot Power On the I/O Drawer,
Power Present LED Does Not Come On” on page 114.
Error code 1011 1B0x in the SPCN error codes table
directed you here.
Go to “MAP 1523: The SPCN Error Codes Table Directed
You Here and the Error Code is 1011 1B0x” on page 121.
106 Eserver pSeries 630 Model 6C4 and Model 6E4 Service Guide
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