8-10 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
serial@0,2e8
serial@0,3f8
Tests the secondary or
primary serial port at
different baud rates.
Problem with the item connected to the serial port or
I/O subsystem chip. If not the item, check the
motherboard. See
“Motherboard Problem” on
page 4-34.
sound@8 Tests the audio controller
and the CODEC chip.
Problem with item attached to the audio ports, the I/O
subsystem chip, the CODEC chip, speaker, or speaker
cable. If not item, check the audio and motherboard. See
“Audio Output Problem” on page 4-12 or
“Motherboard Problem” on page 4-34.
usb@a Tests the first USB
controller.
Problem with the item attached to the front USB ports.
Audio/USB board not making good connection to the
motherboard or I/O subsystem chip. If not item, check
cable, audio/USB board, and motherboard. See
“USB
Problem” on page 4-10 or “Motherboard Problem” on
page 4-34.
usb@b Tests the second USB
controller.
Problem with item attached to the rear USB ports or
I/O subsystem chip. If not item, check motherboard.
See
“Motherboard Problem” on page 4-34.
TABLE 8-1 OpenBoot Diagnostics Test Usage (Continued)
OpenBoot Diagnostics
Test Purpose What Error Results Might Mean and What to Do
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