Chapter 8. Using the Diagnostics
This chapter describes how to run the diagnostics from the network server.
Diagnostic Programs Operating Considerations
The following items identify some things to consider before using the diagnostic programs.
Note: When possible, run the Online Diagnostics in Service Mode. Online Diagnostics
perform additional functions, compared to Standalone Diagnostics.
Diagnostics on a System Unit Attached to Another System
If your system unit is attached to another system using a network or directly attached to the
channel of another system, see "General Information About Multiple Systems" in this chapter
before running any diagnostic procedures.
Selecting a Console Display
When you run diagnostics from diskettes, from a CD-ROM disc and, under some conditions,
when you run them from disk, you need to select the console display. The diagnostic
programs display c31 in the operator panel display and display instructions on any
direct-attached displays and the terminal attached to the S1 port.
If c31 is displayed, follow the instructions to select the console display. If you do not have a
console display, set the key mode switch to Normal and then back to Service. This signals
the diagnostic programs to use the operator panel display for instructions.
Identifying the Terminal Type to the AIX operating system
Note: This is a different function than selecting a console display.
When you run diagnostics, the AIX operating system must know what type of terminal you
are using. If the terminal type is not known when the FUNCTION SELECTION menu is
displayed, the diagnostics do not allow you to continue until a terminal is selected from the
DEFINE TERMINAL option menu. Select hft for adapter-attached displays. This option
sets the TERM environment variable in the AIX operating system.
Undefined Terminal Types
If an undefined terminal type from the DEFINE TERMINAL option menu is entered, the
menu prompts the user to enter a valid terminal type, and the menu is redisplayed until
either a valid type is entered or the user exits the DEFINE TERMINAL option.
Resetting the Terminal
If the user enters a terminal type that is valid (according to the DEFINE TERMINAL option
menu) but is not the correct type for the ASCII terminal being used, difficulty may be
encountered in reading the screen, using the function keys or the Enter key. These
difficulties can be bypassed by pressing Ctrl-C to reset the terminal. The screen display
which results from this resetting action varies with the mode in which the system is being
Normal or Maintenance Mode – The command prompt appears.
Service Mode – The terminal type is reset to "dumb", the Diagnostic Operating
Instruction panel is displayed, and the user is required to go through the DEFINE
TERMINAL process again.
Using the Diagnostics