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Chapter 4 Troubleshooting Procedures 4-13
2. At the ok prompt, type:
3. When the UPA graphics card on-board diagnostics are completed, type:
4.7 OpenBoot 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.
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
ok% setenv diag-switch? false
diag-switch? = false