IBM eserver 630 6C4, Service Manual

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Resetting the Terminal
If you enter a terminal type that is valid (according to the DEFINE TERMINAL option
menu) but is not the correct type for the Hardware Management Console for pSeries
(HMC) virtual terminal window being used, you may be unable to read the screen, use
the function keys, or use the Enter key. These difficulties can be bypassed by pressing
Ctrl-C to reset the terminal. The screen display that results from this reset depends on
the mode in which the system is being run:
v
Online Normal or Maintenance Mode - The command prompt displays.
v
Standalone Mode or Online Service Mode - The terminal type is reset to
dumb
, the
Diagnostic Operating Instruction panel displays, and you are required to go through
the DEFINE TERMINAL process again.
Running Online Diagnostics
Consider the following when you run the online diagnostics from a server or a disk:
v
The diagnostics cannot be loaded and run from a disk until the AIX operating system
has been installed and configured.
v
The diagnostics cannot be loaded on a system (client) from a server if that system is
not set up to boot from a server over a network. When the system is set up to boot
from a server, the diagnostics are run in the same manner as they are from disk.
v
If your system is connected to a HMC refer to “Running Online Diagnostics in
Service Mode from a Hardware Management Console (HMC)” on page 274.
v
On full system partitions, if the diagnostics are loaded from disk or a server, you
must shut down the AIX operating system before turning off the system unit to
prevent possible damage to disk data. This is done in one of two ways:
– If the diagnostics were loaded in standalone mode, press the F3 key until
DIAGNOSTIC OPERATING INSTRUCTIONS
displays. Then press the F3 key once again
to shut down the AIX operating system.
– If the diagnostics were loaded in maintenance or concurrent mode, type the
shutdown
command.
v
Under some conditions, the system might stop, with instructions displayed on
attached displays and terminals. Follow the instructions to select a console display.
Online Diagnostics Modes of Operation
Note: When running online diagnostics on a partition in a partitioned system,
diagnostics can be run only on resources that are allocated to that partition.
The online diagnostics can be run in the following modes:
v
Service Mode
v
Concurrent Mode
v
Maintenance Mode
Chapter 6. Loading and Using Online and Standalone Diagnostics
273