Power-On Self-Test; Post Overview; Configuring Post Output - Sun Microsystems Blade 1500 Service, Diagnostics, And Troubleshooting Manual

POST, OpenBoot Diagnostics, and SunVTS Tests Available for Components (Continued)
TABLE 5-2
Component POST
USB No testing
Keyboard and No testing
mouse
Parallel port* No testing
Serial ports* Used for POST output
Audio ports* No testing
* More thorough test results are possible with a loopback connector, however these results are not addressed.
5.4

Power-On Self-Test

Chapter 7
(POST) on the Sun Blade 1500 workstation.
5.4.1

POST Overview

Typing the post command from the ok prompt initiates tests that check the CPU,
I/O bridge chip, and memory modules. The output of the post command is
directed to the serial port of the system under test. An external display device and a
TIP connection are required to view this output.
5.4.2

Configuring POST Output

The post command uses two variables to determine its output. It is in the form of:
post level verbosity
Where:
level is min or max
■
verbosity is min, normal, or max
■
5-4 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
OpenBoot Diagnostics
usb@a and usb@b
keyboard@x (x varies as
to which USB port the
keyboard is attached.)
parallel@0,378
serial@0,2e8 and
serial@0,3f8
sound@8
contains information about how to set up and use power-on self-test
SunVTS
c1t0d0(disktest)
For USB removable media
device.
kbd(usbkbtest)
ecpp0(eccptest)
su0(sutest)
sound0(audiotest)