Upa Graphics Card - Sun Microsystems Sun Ultra 60 Service Manual

TABLE 4–6
Type of Test
test net
test ttya
test ttyb
test
keyboard
test -all
4.6.5

UPA Graphics Card

Note -
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:
Selected OBP On-Board Diagnostic Tests
Description
Performs internal/external
loopback test of the system
auto-selected Ethernet interface.
Outputs an alphanumeric test
pattern on the system serial
ports:ttya, serial port A; ttyb, serial
port B.
Executes the keyboard selftest.
Sequentially test system-configured
devices containing selftest.
The UPA graphics card includes the vertical, single buffer and vertical, DBZ
CODE EXAMPLE 4–7
ok setenv diag-switch? true
diag-switch? = true
(continued)
(continued)
Preparation
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-devs command).
Troubleshooting Procedures
4-11