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4-12 Sun Ultra 60 Service Manual • August 2001
4.6.5 UPA Graphics Card
Note – The UPA graphics card includes the vertical, single buffer and vertical, DBZ
graphic cards.
The UPA graphics card contains a built-in diagnostic test that is enabled through the
OBP. The UPA graphics card built-in diagnostic test verifies basic graphics
functionality without booting the operating system software.
To execute the built-in diagnostic test, the system must be at the ok prompt.
To initilize the UPA graphics card diagnostic:
1. At the ok prompt, type:
TABLE 4-6 Selected OBP On-Board Diagnostic Tests
Type of Test Description Preparation
test screen Tests system video graphics hardware
and monitor.
Diag-switch? NVRAM parameter must be
true for the test to execute.
test floppy Tests diskette drive response to
commands.
A formatted diskette must be inserted into the
diskette drive.
test net Performs internal/external loopback
test of the system auto-selected
Ethernet interface.
An Ethernet cable must be attached to the
system and to an Ethernet tap or hub or the
external loopback test fails.
test ttya
test ttyb
Outputs an alphanumeric test pattern
on the system serial ports:ttya, serial
port A; ttyb, serial port B.
A terminal must be connected to the port being
tested to observe the output.
test
keyboard
Executes the keyboard selftest. Four keyboard LEDs should flash once and a
message is displayed: Keyboard Present.
test -all Sequentially test system-configured
devices containing selftest.
Tests are sequentially executed in device-tree
order (viewed with the show-devs command).
ok setenv diag-switch? true
diag-switch? = true