Sun Microsystems Sun Fire V100 manual Diagnostic Tools, POST Diagnostics, Type

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-levelto 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