To Start Post Diagnostics - Sun Microsystems Sun Fire V210 Manual

POST detects most system faults and is located in the motherboard OpenBoot™
PROM. POST can be set to run by the OpenBoot program at power up by setting two
environment variables, the diag-switch? and the diag-level flag, which are
stored on the system configuration card.
POST runs automatically when the system power is applied, or following an
automatic system reset, if all of the following conditions apply:
diag-switch? is set to true (default is false)
diag-level is set to min, max or menus (default is min)
post-trigger matches the class of reset (default is power-on-reset)
If diag-level is set to min or max, POST performs an abbreviated or extended test,
respectively.
If diag-level is set to menus, a menu of all the tests executed at power up is
displayed.
POST diagnostic and error message reports are displayed on a console.

To Start POST Diagnostics

1. Go to the OK prompt.
2. Type:
ok setenv diag-switch? true
3. Type:
ok setenv diag-level value
Where value is either min or max depending on the quantity of diagnostic
information you want to see.
4. Type:
ok reset-all
The system runs POST diagnostics if post-trigger is set to user-reset. Status and
error messages are displayed in the console window. If POST detects an error, it
displays an error message describing the failure.
Chapter 6 Diagnostics 57