Technical data

Table 2–17 lists the tests that are in the SCSI system test.
Table 2–17 SCSI System Test
Self-Test Function
Inquiries test Performs inquiries to find out which devices are connected to
the SCSI bus.
Size bus test Spins up all the hard disk drives, makes sure the drives are
ready (if not in customer environment), forces disk block sizes
to 600 bytes, and obtains the capacity of the drives.
Checks that removable media are not write protected; checks
that key pattern is present on removable media in Digital
Services environment, and that VMS boot block is present on
the hard disk drives when in manufacturing environment.
Data transfer test Verifies SCSI bus communication between the controller and
available peripherals.
Verifies the data path of the controller to the S-chip and to
memory.
Device test Verifies the peripheral devices attached to the SCSI bus and
the DMA data path.
Interrupts are enabled.
The following is an example of a successful SCSI system test display:
10 SCSI ################## 4
The following example shows an unsuccessful (error) SCSI system test display:
?? 10 SCSI 150 0076 8:18:41
The display shows an error ( 0076 ) on a SCSI device ( 10 SCSI ) with ID 5 ( 150 ).
Diagnostic Testing 2–31