Table 4-5 Selected On-Board Diagnostics Tests - Sun Microsystems Ultra 1 140 Service Manual

4
4.6 Selected On-Board Diagnostic Tests
Type of Test
test screen
test floppy
test net-aui
test net-tpe
test net
4-12
Example:
ok test floppy
Testing floppy disk system. A formatted disk should be in the
drive.
Test succeeded.
The on-board diagnostic tests that you can run on the Sun Ultra 1 Series
systems are listed in Table 4-5.
Table 4-5 Selected On-Board Diagnostics Tests
Description
Tests the system's video graphics
hardware and monitor
Tests the floppy drive's ability to
respond to commands
Performs an internal and external
loopback test on the AUI (Thick)
Ethernet interface
Performs an internal and external
loopback test on the TPE (Twisted-
Pair Ethernet) interface
Performs an internal and external
loopback test on the auto-selected
system Ethernet interface
Sun Ultra 1 Series Service Manual—November 1995
Preparation
The diag-switch? NVRAM parameter
must be set to true for the test to run.
Requires a formatted diskette to be
inserted into the drive.
Connect a cable to the system's AUI
Ethernet port and to an Ethernet tap
or the test will fail the external
loopback phase.
Connect a cable to the system's TPE
port and to a TPE hub or the test will
fail the external loopback phase. If
the tpe-link-test? parameter is
false (disabled), the external
loopback test will appear to pass
even if a cable is not connected.
A cable must be attached to the
system and to an Ethernet tap or hub
or the external loopback test will fail.