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MAP 1540: Problem Isolation Procedures
These procedures are used to locate problems in the processor subsystem, I/O subsystem(s) or rack. If a
problem is detected, these procedures help you isolate the problem to a failing unit.
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 FRU identify LED
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. For information on how to use the LED Control Menu, see "System
Information Menu" on page 205.
Any identify LED in the system may also be flashed by using the "Identify and Attention Indicators" task
through the AIX diagnostic programs. The procedure for operating the Identify and Attention Indicators task
of 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.
Symptom/Reference Code/Checkpoint
You were sent here by the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems book.
406x 00B7
406x 0EB1, 406x 0EB2, 406x 0EB3, 406x 0EB4,
406x 0EB5, 406x 0EB6, 406x 0EB7, 406x 0EB8,
406x 0EB9, 406x 0EBA, 406x 0EBB, 406x 0EBC
406x 0EB0
1011 8400, 1011 8401, 1011 8409, 1011 840A,
1011 840B, 406x 0CA5, B1xx 4643, B1xx 4644,
B1xx 4645, B1xx 4646, B1xx 4648
Problem Isolation Procedures
Action
Go to "MAP 1548: System Processor Problem Isolation"
on page 90.
Go to "MAP 154B: Insufficient Hardware Resources
Problem Isolation" on page 103.
Go to "MAP 1549: Attention Problem Isolation" on page
101..
Go to "MAP 1541: JTAG Problem Isolation" on page 89.
Go to "MAP 1548: System Processor Problem Isolation"
on page 90.
Chapter 3. Maintenance Analysis Procedures (MAPs)
87
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