10
SPARCstation Voyager Service Manual • December 1994
TABLE 2-2
provides a summary of the available diagnostic tools and lists when to use
each diagnostic tool.
OpenBoot PROM Diagnostics
The diagnostics stored in the OpenBoot PROM include:
■
POST
■
On-board diagnostics
See
TABLE 2-2
and Chapter 3 for information on POST. If there is system trouble, you
can run on-board diagnostics for thorough tests, including but not limited to:
■
Ethernet test
■
Memory test
■
Diskette drive test
■
SCSI disk test
You can run on-board diagnostics from the
ok
prompt. If there is a problem with the
operating system, the operating system brings the system to the
ok
prompt. You can
also get to the
ok
prompt by shutting down the operating system.
TABLE 2-2
Diagnostic Tools
Diagnostic
Description
Power-On Self-Test
POST tells you if the CPU board or memory card fails.
POST code, residing in the OpenBoot PROM, executes at
power-on when you press and hold the
Stop-
D keys, or
the
diag-switch?
parameter is set to
true
, or the
keyboard is disconnected.
On-Board Diagnostics
Includes tests such as: Ethernet and the diskette drive
controller tests. To run on-board diagnostics, you must be
at the
ok
prompt. See Appendix C, “Selected On-Board
Diagnostics.”
Forth Toolkit
Allows input to the system at the OpenBoot PROM level.
Supports functions such as changing NVRAM
parameters, resetting the system, running diagnostic tests,
displaying system information, and redirecting input and
output. See the manual OpenBoot Command Reference
.
SunDiag System Exerciser
Runs under the operating system and displays real-time
use of the system resources and peripherals. See the
SunDiag User’s Guide for more information. If SunDiag
fails, run the Power-On Self-Test.
Summary of Contents for SPARCstation Voyager
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