5
Using Diagnostic Software
The DECmpp 12000/Sx contains diagnostics and related utility programs to
test the array control unit (ACU) PCB, the processor element (PE) array PCBs,
the PE array/router connections, the router PCB, EEPROMs, and memory.
Appendix B provides reference pages for many of the diagnostics.
Note
Before running any DECmpp 12000/Sx diagnostics, make sure the
front-end system is running correctly. Make sure no other users are on
the system.
Running diagnostic programs may cause the system to crash, especially if
the programs encounter problems.
To abort a diagnostic program while it is running, do not kill the process.
Suspend it by entering Ctrl/C; this allows the diagnostic to restore the
system to a usable state.
Using Diagnostic Software 5–1
