Sun Microsystems Fire V890 Service Manual page 31

3. Insert the system key into the front panel keyswitch and turn it to the Normal or
Diagnostics position.
Normal position will enable the custom OpenBoot
testing as defined for your system.
Note – OpenBoot PROM Version 4.17.x provides diagnostics that are enabled by
default.
Full OpenBoot Diagnostics run at initial power-on. For more information about
these enhancements, the new and redefined configuration variables, and the new
standard (default) configuration, refer to OpenBoot PROM Enhancements for Diagnostic
Operation Guide, which is included on the Sun Fire V890 Documentation CD.
Diagnostics position will enable the standard default OpenBoot configuration for
running diagnostic tests. Your system will automatically run maximum POST and
OpenBoot Diagnostics tests and display the output. The system will also enable
automatic system recovery (ASR).
For information about the standard default Open Boot configuration for diagnostic
testing, refer to the OpenBoot PROM Enhancements for Diagnostic Operations Guide,
which is included on the Sun Fire V890 Documentation CD.
See "About Power Button and Keyswitch Settings" on page 14
each keyswitch setting.
4. Press the Power button to the left of the keyswitch to power on the system.
TM
configuration for diagnostic
for information about
Normal
position
Diagnostics
position
Chapter 1 Preparing to Service the System 3