5-4 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
* More thorough test results are possible with a loopback connector, however these results are not addressed.
5.4 Power-On Self-Test
Chapter 7 contains information about how to set up and use power-on self-test
(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
USB No testing usb@a and usb@b c1t0d0(disktest)
For USB removable media
device.
Keyboard and
mouse
No testing keyboard@x (x varies as
to which USB port the
keyboard is attached.)
kbd(usbkbtest)
Parallel port* No testing parallel@0,378 ecpp0(eccptest)
Serial ports* Used for POST output serial@0,2e8 and
serial@0,3f8
su0(sutest)
Audio ports* No testing sound@8 sound0(audiotest)
TABLE 5-2 POST, OpenBoot Diagnostics, and SunVTS Tests Available for Components (Continued)
Component POST OpenBoot Diagnostics SunVTS
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