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Diagnostic Tools
The following troubleshooting tools are available for the servers:
Power On Self Test (POST) Diagnostics
OpenBoot Diagnostics (OBDiag)
SunVTS
POST Diagnostics
To view Power On Self Test (POST) diagnostic and error messages you need to have
a serial connection set up to the server. For more information, see "Setting Up a
Console Connection to the Server" on page 20.
If the OpenBoot PROM (OBP) variable diag-switch? is set to true, then POST
diagnostics will run automatically when you power on the server. However, the
default setting for diag-switch? is false.
To initialize POST diagnostics, you need to set the diag-switch? variable to true
and diag-level to max or min, and then power cycle the server. From the ok
prompt:
1. Type:
ok setenv diag-switch? true
2. Type:
ok reset-all
The system will now run POST diagnostics and display status and error messages in
your console window. If POST detects an error, it displays an error message
describing the failure. A sample error message is shown below:
Power On Self Test Failed. Cause: DIMM U0702 or System Board
100
Sun Fire V100 Server User's Guide • December 2001
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