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v If the diagnostics were loaded from disk or a server, you must shut down the AIX
operating system before powering off the system unit to prevent possible damage to
disk data. This is done in one of two ways:
– If the diagnostic programs were loaded in standalone mode, press the F3 key until
DIAGNOSTIC OPERATING INSTRUCTIONS displays; then follow the displayed
instructions to shut down the AIX operating system.
– If the diagnostic programs were loaded in maintenance or concurrent mode, enter
the shutdown -F command.
v Under some conditions the system may stop with instructions displayed on attached
displays and terminals. Follow the instructions to select a console display.
Running the Diagnostics from a TTY Terminal
Consider the following when you run diagnostics using a TTY-type terminal as the
console display:
v See the operator manual for your type of TTY terminal to find the key sequences you
need to respond to the diagnostics.
v When the diagnostics present display information through the S1 serial port, certain
attributes are used. These attributes are set as if the diagnostics were using a 3161
display terminal. Refer to the tables in Appendix C, “General Attributes Required
When Using a TTY Terminal” on page 173 for a list of attributes for the 3161 ASCII
Display Terminal and for two other ASCII display terminals commonly used with the
system.
v If you have a TTY terminal other than a 3151, 3161 or 3164 attached to the S1 serial
port, your terminal may have different names for the attributes. Refer to the tables in
Appendix C, “General Attributes Required When Using a TTY Terminal” on page 173,
and use the attribute descriptions to determine the settings for your terminal.
Online Diagnostics Mode of Operation
The Online diagnostics can be run in the following modes:
v
Service mode
allows checking of most system resources.
v
Concurrent mode
allows the normal system functions to continue while selected
resources are being checked.
v
Maintenance mode
allows checking of most system resources.
Chapter 5. Using the Standalone and Online Diagnostics 97