User`s guide

5-3
Using the Online and Standalone Diagnostics
Running the Diagnostics from a TTY Terminal
Note: Consider the following when you run diagnostics using a TTY–type terminal as the
console display:
See the operator manual for your type of TTY terminal to find the key sequences you need
to respond to the diagnostics.
Refer to the Terminals and Printers Configuration Guide, order number 86 A1 22WE, for
more information about terminals settings.
Selecting a Console Display
When you run Standalone Diagnostics (and under some conditions, Online Diagnostics),
you must select the console display. The diagnostics can display instructions on any
graphical display and the terminal attached to the S1 serial port.
Online Diagnostics Modes of Operation
The Online Diagnostics can be run in the following three modes:
• Service Mode
• Concurrent Mode
• Maintenance Mode
Service Mode
Service mode provides the most complete checkout of the system resources. This mode
also requires that no other programs be running on the system. All system resources,
except the SCSI adapter and the disk drives used for paging, can be tested. However, note
that the memory and processor are only tested during POST, and the results of the POST
tests are reported by diagnostics.
Error–log analysis is done in service mode when you select the Problem Determination
option on the DIAGNOSTIC MODE SELECTION menu.
Running the Online Diagnostics in Service Mode
To run Online Diagnostics in service mode, use the following steps:
1. Ask the system operator to stop all programs, including the AIX operating system.
2. Turn off the power.
3. Remove all tapes, diskettes, and CD–ROMs.
4. Turn on the power.
a. When the Keyboard indicator appears, press the numeric 6 key on the keyboard to
indicate that diagnostics are to be loaded.
b. Enter any requested passwords.
c. Follow any instructions to select a console.
5. After the diagnostic controller loads, DIAGNOSTIC OPERATING INSTRUCTIONS
appear on the console display.
6. Follow the displayed instructions to test the desired resources.
7. When testing is complete, use the F3 key to return to the DIAGNOSTIC OPERATING
INSTRUCTIONS.
8. Press the F3 key (from a defined terminal) or press 99 (for an undefined terminal) to shut
down the diagnostics before turning off the system unit.