MAP 1540: Problem Isolation Procedures
These procedures are used to locate problems in the processor subsystem, I/O subsystems, or rack. If a
problem is detected, these procedures help you isolate the problem to a failing unit. Find the symptom in
the following table; then follow the instructions given in the Action column.
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
Various FRU identify LEDs
– Power subsystem FRUs
– CEC subsystem FRUs
– I/O subsystem FRUs
– PCI-X adapter identify LED
– DASD identify LED
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 268.
Any identify LED in the system can also be flashed by using the
″
Identify and Attention Indicators
″
task
through 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
.
Chapter 3. Maintenance Analysis Procedures (MAPs)
69
Summary of Contents for TotalStorage NAS Gateway 500
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