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38
Troubleshooting
2.15.1 Self-Test
Run self-test to get a quick status of the SCSI buses and the drives on those
buses
including any
devices connected
to the
SCSI
port
on the back of the
system box. Be sure
to
plug
a SCSI terminator into
the SCSI port if no
external boxes
are
connected or
into the
last daisy-chained box connected
to
the
SCSI
port.
The
TK.50Z-FA
expansion
box
does
not
need termination since
it has
internal
terminators and
should always be
connected last on the
SCSI
port daisy
chain.
However,
the
TK50Z-GA
expansion box
(with
the SCSI
ID
switch on the back) does
not
have the internal
resistors installed and it must
have the SCSI terminator installed for the SCSI bus to operate properly.
Enter
TEST 6
or
TEST 7
depending on which SCSI bus and which model
you are troubleshooting. Enter TEST 50 to see the results of self-test.
Table 2-10 Self-Test Commands on the SCSI Buses
Model
SCSI Bus
Test Number
30
SCSI-A
6 with STS06/SCSI MSC module installed
30
SCSI-A
7
with SCSI/SCSI MSC module
installed
30
SCSI-B
6 with SCSI/SCSI MSC module installed
40
SCSI-A
7
40
SCSI-B
6
2.15.1.1 Self-Teat Codes Explained
Fi~e
2-7
shows an example of SCSI-B codes
in
the configuration table
(SCSI-A codes are similar). There is one line
for
the status of the SCSI
controller
~md
one line
that contains the status for
all
drives
on
that SCSI bus.
The status of the SCSI controller is next to the SCSI-B mnemonic (first line
0000.XXXX) and each drive status is listed by the SCSI address order in the
second line.
SCSI-8
3838.0001
FFFFFFOS 00000001 00000001 00000001 05000001 01000001 FFFFFF03
! !
!
!
! ! !
off line
RZSS
RZ23
RZ23
RRD40
TKSOZ
SCSI-B
box
drive
drive
drive
box
controller
Figure 2-7 Self-Teet Example on the SCSl·B Device
An easy way to determine
if
any errors are detected is by looking for the
question marks in the left column. If there are question marks, then one or
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