Sun Microsystems SPARCstation 20 Service Manual page 37

TABLE 2-3
Type of Test Description
test disk Tests internal or external SCSI disks
test disk0 that have self-test diagnostic programs
test disk1 on the drive controller
test disk2
test disk3
Performs a self-test diagnostic on the
test cdrom
CD-ROM drive
test tape Tests the SCSI tape drive by executing
test tape0 the drive self-test program; tape and
test tape1 tape 0 are the first tape drive. tape
1 is the second tape drive
test ttya Tests serial ports. Outputs an
test ttyb alphanumeric test pattern on the
system serial ports
Executes the keyboard self-test; four
test keyboard
keyboard LEDs should flash on once
and the message, Keyboard
Present, is displayed
Tests main memory
test-memory
Tests all system devices (such as SBus
test-all
cards) with built-in test programs;
hard disks, tapes, and CD-ROMs are
not tested
Displays seconds from the NVRAM/
watch-clock
TOD chip
Monitors Ethernet packets on the
watch-net
auto-selected Ethernet cable connected
to the system
Monitors Ethernet packets (10Base5—
watch-aui
Thicknet) on the Ethernet cable
connected to the system
Monitors Ethernet packets
watch-tpe
(10Base_T—twisted-pair Ethernet) on
the Ethernet cable connected to the
system
Monitors Ethernet packets on all
watch-net-all
Ethernet interfaces installed in the
system
OpenBoot PROM Diagnostic Tests (Continued)
Preparation
The disk drive must be spinning before this
test is executed; enter a boot disk alias
command to cause the drive to spin up.
The CD-ROM drive must be set to SCSI
address 6 and have a CD inserted.
The tape drive must be set to SCSI address 4
(tape 0) or address 5 (tape 1) and a tape
must be installed.
Attach a terminal to the serial port to observe
the output.
Keyboard must be connected.
Set diag-switch? to true or set selftest-
#megs to the desired parameter.
Set the diag-switch? parameter to true.
None.
A cable must be connected to the back panel
Ethernet port.
A cable must be connected between the rear
panel AUI Ethernet port and the Ethernet
transceiver.
A cable must be connected between the rear
panel TPE port and a TPE hub.
Cables must be connected to all Ethernet ports
being tested.
Chapter 2 Troubleshooting Overview 13