Sun Microsystems 60 service manual UPA Graphics Card, 6Selected OBP On-Board Diagnostic Tests

TABLE 4-6Selected OBP On-Board Diagnostic Tests

Type of Test Description Preparation

test	screen	Tests system video graphics hardware
		and monitor.
test	floppy	Tests diskette drive response to
		commands.
test	net	Performs internal/external loopback
		test of the system auto-selected
		Ethernet interface.
test	ttya	Outputs an alphanumeric test pattern
test	ttyb	on the system serial ports:ttya, serial
		port A; ttyb, serial port B.
test		Executes the keyboard selftest.
keyboard
test	-all	Sequentially test system-configured
		devices containing selftest.

Diag-switch?NVRAM parameter must be true for the test to execute.

A formatted diskette must be inserted into the diskette drive.

An Ethernet cable must be attached to the system and to an Ethernet tap or hub or the external loopback test fails.

A terminal must be connected to the port being tested to observe the output.

Four keyboard LEDs should flash once and a message is displayed: Keyboard Present.

Tests are sequentially executed in device-tree order (viewed with the show-devscommand).

4.6.5UPA 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:

ok setenv diag-switch? true

diag-switch? = true

4-12Sun Ultra 60 Service Manual • August 2001