Sun Microsystems 60 service manual OpenBoot Diagnostics, Ok% test screen

2. At the ok prompt, type:

ok% test screen

Verifying Console Mode for Frame Buffer Board

This will take a few minutes

Verifying Frame Buffer Memory used for console mode

This will take about two minutes

FFB Frame Buffer functional test passed ok

3. When the UPA graphics card on-board diagnostics are completed, type:

ok% setenv diag-switch? false

diag-switch? = false

4.7OpenBoot Diagnostics

The OpenBoot diagnostic (OBDiag) is a menu-driven set of diagnostics that verifies:

■PCI/Cheerio

■Ebus DMA/TCR registers

■Ethernet

■Keyboard

■Mouse

■Floppy

■Serial port A

■Serial port B

■NVRAM

■Audio

■SCSI

■All above

OBDiag performs root-cause failure analysis on the referenced devices by testing internal registers, confirming subsystem integrity, and verifying device functionality.

To initilize the OBDiag menu:

1. At the ok prompt, type: obdiag.

Chapter 4 Troubleshooting Procedures 4-13