Technical data

4-14 Fault Isolation
4.2 Diagnostic Summary for Domain Compatible Mode
Several levels of operations exist within systems that run in Domain Compatible mode.
Each level has diagnostic or error reporting capabilities. The following sections explain
each of these levels.
• The Mnemonic Debugger (MD) level has
– Self Test diagnostics
– Extended Self Test diagnostics
– Test Stimulus Code (TSC) diagnostics
– Standalone utilities
• The sysboot (netboot) program
• The online level has
– Phase II (boot) shell
– Online exercises
The functional capabilities of the failing node determines which diagnostic tool you
can use. Always start troubleshooting by noting any error messages and then running
the Self Test diagnostics.