If the system or logical partition where you would like to run diagnostics has AIX® installed but it cannot be started, or you have Linux® installed, use this procedure to perform diagnostic procedures from CD-ROM when directed from another procedure or by your next level of support.
Diagnostics, which are available for AIX and Linux systems and logical partitions, can help you perform hardware analysis. If a problem is found, you will receive a service request number (SRN) or a service reference code (SRC) that can help pinpoint the problem and determine a corrective action.
Additionally, there are various service aids in the diagnostics that can help you with service tasks on the system or logical partition.