Sun Microsystems Netra t 1120, Service Manual

Page: 30 / 148

3-4 Netra t 1120/1125 Service Manual • August 1998
3.3 To Initialize POST
POST is initialized by setting
diag-switch?
to
true
and
diag-level
to
max
or
min
, followed by power cycling the system unit.
1. At the system prompt, type:
2. When the POST is complete, set
diag-switch?
to
false
(default setting).
3.4 Maximum and Minimum Levels of
POST
Two levels of POST are available: maximum (
max
) level and minimum (
min
) level.
The system initiates the selected level of POST based on the setting of
diag-level
, an NVRAM variable.
The default setting for
diag-level
is
max
. An example of a
max
level POST output
on serial port A is provided in Section 3.4.1 “
diag-level
Variable Set to
max
” on
page 3-5. An example of a
min
level POST output on serial port A is provided in
Section 3.4.2 “
diag-level
Variable Set to
min
” on page 3-14.
To set
diag-level
to
min
, type:
To return to the default setting
:
setenv diag-switch? true
ok setenv diag-level min
ok setenv diag-level max