IBM B50 - Manual (Page 145)

3. Enter the shutdown -m command.
4. When a message indicates the system is in maintenance mode, enter the diag
command.
Note: It may be necessary to set TERM type again.
5. When DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed, follow
the displayed instructions to check out the desired resources.
6. When testing is complete, use the F3 key to return to DIAGNOSTIC
OPERATING INSTRUCTIONS. Then press the F3 key again to return to the AIX
operating system prompt.
7. Press Ctrl-D to log off from root or superuser.
Standalone Diagnostic Operation
Standalone Diagnostics provide a method to test the system when the Online
Diagnostics are not installed and a method of testing the disk drives that cannot be
tested by the Online Diagnostics.
No Error Log Analysis is done by the Standalone Diagnostics.
The CD-ROM drive and the SCSI controller that controls it cannot be tested by the
Standalone Diagnostics.
Running the Standalone Diagnostics
To run Standalone Diagnostics in service mode, take the following steps:
1. Verify with the system administrator and system users that the system unit may
be shut down, then stop all programs including the AIX operating system. (Refer
to the AIX operating system documentation shutdown command information.)
2. Remove all tapes, diskettes, and CD-ROMs.
3. Insert the Diagnostic CD-ROM into the CD-ROM drive.
4. Turn off the system unit.
5. Turn the power on.
a. After the Keyboard indicator appears, press 5 on the keyboard to indicate that
diagnostics are to be loaded.
b. Enter any requested passwords.
c. Follow any instructions to select a console.
Chapter 5. Using the Online and Standalone Diagnostics 5-13