IBM RS/6000 44P Series 270, User Manual

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Step 3
Determine if the operating system is accepting commands.
Is the operating system accepting commands?
NO The system must be turned off in order to run diagnostics.
Verify with the system administration and users that the system may
be turned off. If so, then turn off the system unit and go to “Step 6” on
page 151.
YES Go to “Step 4”.
Step 4
Diagnostic tests can be run on many resources while the operating system is running.
However, you can obtain more extensive problem isolation by running Online
Diagnostics in Service mode.
Do you want to run the Online Diagnostics in Service mode?
NO Go to “Step 5”.
YES Do the following to shut down your system:
1. At the system prompt, stop the operating system using the
appropriate command for your operating system.
2. After the operating system is stopped, power off the system unit.
3. Go to “Step 6” on page 151.
Step 5
This step starts the Online Diagnostics in concurrent mode.
1. Log in as root user.
2. Enter the diag command.
3. Wait until the Diagnostic Operating Instructions are displayed, or wait for three
minutes.
Are the Diagnostic Operating Instructions displayed without any obvious console
display problems?
NO Do the following to shut down your system:
1. At the system prompt, stop the operating system using the proper
command for your operating system.
2. After the operating system is stopped, power off the system unit.
3. Go to “Step 6” on page 151.
YES Go to “Step 9” on page 152.
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44P Series Model 170 User’s Guide